MWC21095 Microwave High Voltage Capacitor (2100VAC, 0.95µF)
The MWC21095 is a universal high voltage capacitor for microwave ovens, part of the high-voltage power supply circuit that steps up household voltage to the extreme level the magnetron needs to generate cooking power. Working alongside the high-voltage diode and transformer, this capacitor doubles the rectified voltage feeding the magnetron — it's a core piece of why a microwave can produce thousands of volts internally from a standard household outlet.
Rated 2100VAC, 0.95µF, ±3% tolerance, oval aluminum can construction with two male terminals spaced 1/4" (6.35mm) apart. Overall dimensions approximately 3.35"H (body) x 2.75"W x 2.05"D, with the terminal housing adding roughly 1.3" to the total height. Over time, the internal dielectric can break down from repeated high-voltage cycling, causing the capacitor to lose capacitance or fail outright — sometimes shorting internally. Symptoms of a failing capacitor include the microwave running (light on, turntable turning, fan running) but not heating food, a buzzing or humming noise from the high-voltage compartment, arcing or sparking sounds, or the microwave tripping a breaker shortly after starting.
⚠️ Extreme Danger — Lethal Voltage Risk A microwave's high voltage capacitor can retain a lethal electrical charge for a long time after the microwave has been unplugged — this is one of the most dangerous components in any household appliance to work on. Even with the microwave fully unplugged, this capacitor can still deliver a fatal shock if handled incorrectly. Before touching any component in the high-voltage compartment, the capacitor must be safely discharged by shorting both terminals to the chassis ground using an insulated-handle screwdriver, and that discharge should be verified with a multimeter before proceeding. If you are not fully trained and confident in safely discharging a high voltage capacitor, do not attempt this repair — have a qualified appliance technician replace this part instead. This applies every time, regardless of how long the microwave has been unplugged.
Quick Answer
The MWC21095 Microwave High Voltage Capacitor fixes microwave ovens that run (light, turntable, fan all working) but don't heat food, make a buzzing or arcing sound from the high-voltage compartment, or trip the breaker shortly after starting. 2100VAC, 0.95µF, ±3%, oval, 2 male terminals (1/4"/6.35mm spacing). Retains a lethal electrical charge even after unplugging — must be properly discharged before any handling.
Common Problems This Part Fixes
Microwave runs (light on, turntable turning, fan running) but doesn't heat food
Buzzing or humming noise from the high-voltage compartment
Arcing or sparking sound during operation
Microwave trips the breaker shortly after starting a cook cycle
Microwave that used to heat inconsistently and has now stopped heating altogether
Visible bulging, leaking, or discoloration on the capacitor can
Cross Reference Information
Part numbers can change over a product's lifecycle as manufacturers update designs or release new appliance models. For your convenience, we've included any known superseded, alternate, or cross-reference part numbers that match this item.
Replaces Part Numbers
TJ13QBP21095, 13QBP0300, 13QBP21095, AP5633423, RC-QZA234WRE0, RC-QZB011MRE0, RCQZA331WRZZ, 5304513458, PD00065299, EAP12365444, 4584979, AP6301645, PS12365444, 00631397, 631397, PD00044249, EAP10057840, 4161979, AP5950362, PS10057840, WB27X11031, PD00040188, EAP2339855, 1474116, AP4362390, PS2339855, WB27X10073, PD00045875, EAP239187, 769853, AP2025984, PS239187, WB27X11011, PD00087136, EAP2345628, 1474103, AP4368101, PS2345628, 2501-001016, 2028385, AP4033712, PS4130923, 8206562, PD00074258, EAP1486840, 1200936, AP3890709, PS1486840, 5304528930, 5304464253, AP7017693, PS2203382, WB27X10009, 254534, AH239117, EA239117, AP2025928, PS239117, WP815073, AP6011690, PS11744888, 2501-000260, AP4033659, PS4130923
This is a universal component rather than a single-manufacturer part, so the specific OEM number your microwave's label references will vary by brand (GE, Whirlpool, Frigidaire, Samsung, LG, and others). This capacitor is a correct replacement for any microwave capacitor matching the 2100VAC, 0.95µF specification. If you have your original part number, contact our support team and we will verify compatibility before you order.
Compatibility
This capacitor is a universal replacement compatible with household microwave ovens across all major brands — GE, Whirlpool, Frigidaire, Samsung, LG, and others — wherever the original capacitor is rated:
2100VAC
0.95µF (or a rating within roughly 10–20% higher than your original — see FAQ)
Oval shape with 2 male terminals, 1/4" (6.35mm) spacing
Note: Voltage rating must match your original capacitor exactly — never substitute a lower voltage rating, and don't assume a higher voltage rating is automatically safe on this component the way it is with an HVAC run capacitor, since the high-voltage diode in the circuit must also be rated to match. Capacitance (µF) has more tolerance than voltage: a modest increase over the original rating is generally acceptable, but always try to match as closely as possible. If you're unsure whether this capacitor matches your microwave's original specification, check the rating printed on your existing capacitor's can before ordering, or contact our support team for help confirming compatibility.
Key Features
Universal microwave high voltage capacitor — a core component of the high-voltage power supply circuit
2100VAC, 0.95µF, ±3% tolerance
Oval aluminum can construction for durability
Resolves "runs but doesn't heat," "buzzing or arcing noise," and "trips the breaker" symptoms caused by capacitor failure
2 male terminals, 1/4" (6.35mm) spacing, for a direct plug-on fit to standard microwave wiring
Compatible with GE, Whirlpool, Frigidaire, Samsung, LG, and most other major microwave brands
Built to meet or exceed industry-standard specifications for this capacitor class
Product Specifications
Part Number
MWC21095
Part Type
Microwave High Voltage Capacitor
Condition
New — Universal Replacement Part
Voltage Rating
2100VAC
Capacitance
0.95 µF (mfd)
Tolerance
±3%
Shape
Oval
Terminals
2 male, 1/4" (6.35mm) spacing
Overall Height
8.5cm / 3.35 in.
Body Height
7cm / 2.75 in.
Body Width
5.2cm / 2.05 in.
Terminal Housing Height
3.3cm / 1.3 in.
Material
Aluminum can
Application
Household Microwave Ovens
Quantity
1 high voltage capacitor
Compatible Brands
Universal — GE, Whirlpool, Frigidaire, Samsung, LG, and most other major brands
Installation Notes
⚠️ Extreme Danger — Discharge Fully Before Any Contact Unplug the microwave and wait, but never assume the capacitor is safe based on time alone. Remove the outer cabinet to access the high-voltage compartment. Before touching anything else, discharge the capacitor by shorting both terminals to the chassis ground using an insulated-handle screwdriver — do this deliberately and do not rush. Verify the capacitor reads no charge with a multimeter before proceeding. Never assume a capacitor is discharged just because time has passed, and never touch the terminals directly, even with the microwave unplugged. If you are not completely confident performing this discharge procedure safely, stop and have a qualified appliance technician complete this repair.
⚠️ Match The Terminal Wiring Exactly Wear insulated gloves and safety glasses. After confirming the capacitor is fully discharged, photograph the wiring on both terminals before disconnecting anything. Remove the mounting bracket or strap holding the old capacitor in place, and disconnect each wire from its terminal. Install the new MWC21095 in the same mounting position, and reconnect each wire to its matching terminal exactly as photographed — the two terminals are not interchangeable in some circuit configurations, so accuracy here matters. Secure the mounting bracket or strap. Reinstall the outer cabinet before restoring power. Plug the microwave back in and test with a cup of water to confirm normal heating without unusual noise.
Frequently Asked Questions
Is it really dangerous to work on this even with the microwave unplugged?
Yes, genuinely. This is one of the most dangerous repairs a person can attempt on a household appliance, because this capacitor is specifically capable of retaining a lethal electrical charge long after the microwave has lost power. Unplugging the microwave is a necessary first step, but it does not make the capacitor safe to touch on its own — proper discharge with an insulated tool, verified with a multimeter, is required every time before any contact with this component.
My microwave runs completely normally — light, turntable, fan — but food doesn't heat. Is this the capacitor?
It's one of the most common causes of exactly that symptom. Since the capacitor is part of the circuit that generates the high voltage the magnetron needs, a failed capacitor can leave every other function of the microwave working normally while the actual cooking power is missing entirely.
Can I use a capacitor with a slightly different µF rating than my original?
Some tolerance is generally acceptable here — a modest increase over your original rating, often cited as up to roughly 10-20% higher, typically works fine, since the capacitance value isn't as tightly critical to the magnetron's operation as some assume. That said, always aim to match your original rating as closely as possible, and never substitute a different voltage rating; the voltage must match your original capacitor exactly.
Should I replace the high-voltage diode at the same time?
It's worth considering. The capacitor and diode work together in the same high-voltage circuit, and a failure in one can sometimes stress or damage the other. If your capacitor failed and you're already taking the precautions needed to safely access this compartment, it may be a reasonable time to inspect or replace the diode as well, particularly if the microwave shows signs of a more significant electrical fault.
Is this a genuine OEM part?
This is a universal replacement part rather than a brand-specific OEM part. Because high voltage capacitors of this type are a standardized component defined by their electrical specifications, this capacitor is a correct replacement for any microwave's original capacitor sharing the same 2100VAC, 0.95µF rating — regardless of which brand originally installed it.
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XPARTCO MCK69074904 Microwave Waveguide Cover / Insulator
The XPARTCO MCK69074904 is an aftermarket replacement waveguide cover, also known as an insulator cover or mica plate, for LG microwaves and select Bosch models. This cover protects the opening where microwave energy enters the cooking cavity from the magnetron. By covering that opening, it ensures microwaves are distributed evenly throughout the cavity while also preventing food particles, grease, and moisture from reaching and damaging the internal waveguide components.
Made of mica, a material that's essentially invisible to microwave energy, this cover measures approximately 4.88" x 4.94" (126mm x 124mm including tabs) and includes a locking button/pin tab for secure mounting. Over time, splattering food and moisture exposure can cause the mica to degrade, warp, or become contaminated, and old, damp, or contaminated mica can react to microwave energy by arcing. If this cover becomes damaged, you'll typically notice sparks or arcing inside the microwave during use, along with possible uneven heating as microwave distribution is no longer properly controlled. It directly replaces MCK69074904, MCK69074902, 4957254, AP6888006, EAP12725272, ALG55468, PD00056750, PS12725272.
Quick Answer
The XPARTCO MCK69074904 Microwave Waveguide Cover / Insulator fixes LG (and select Bosch) microwaves showing sparks or arcing inside the cavity during use, or heating unevenly. Mica plate, approx. 4.88" x 4.94", locking button/pin tab. Replaces MCK69074904, MCK69074902, 4957254, AP6888006, EAP12725272, ALG55468, PD00056750, PS12725272. Accessing this cover means opening the microwave's outer cabinet, which also exposes the high-voltage capacitor — treat that area with the same caution as any internal microwave repair.
Common Problems This Part Fixes
Sparks or arcing visible inside the microwave cavity during use
Uneven heating as microwave energy distribution is disrupted
Visibly damaged, warped, or contaminated mica cover
Burning smell during operation caused by arcing at the waveguide opening
Food particles or moisture damage near the magnetron opening
Cross Reference Information
Part numbers can change over a product's lifecycle as manufacturers update designs or release new appliance models. For your convenience, we've included any known superseded, alternate, or cross-reference part numbers that match this item.
Replaces Part Numbers
This microwave waveguide cover directly replaces the following OEM and cross-reference part numbers:
MCK69074904, MCK69074902, 4957254, AP6888006, EAP12725272, ALG55468, PD00056750, PS12725272.
If your part number is not listed above, contact our support team before ordering and we will verify compatibility.
Compatibility
This waveguide cover is compatible with select LG microwaves, including model numbers such as LMC0975AST, LMC0975ASZ, LMC0975SB, LMC0975ST, LMC1275SB, LMC1375SB, LMC1375SW, LMC1575BD, LMC1575SB, LMC1575ST, LMC1575SW, MH1536GIR, MH1596CIR, MS0936GIS, MS1536GIR, MS1596CIR, and MSWN1590L. It has also been used as a compatible replacement on select Bosch microwave models built on related platforms.
Note: Always verify your full model number before ordering, since LG uses several different waveguide cover sizes and mounting styles across its microwave lineup. Contact our support team with your model number if you're unsure.
Key Features
Aftermarket replacement waveguide cover — protects the magnetron opening and ensures even microwave distribution
Resolves "sparking or arcing inside the cavity" and "uneven heating" symptoms caused by a damaged cover
Mica construction — resistant to high temperature and corrosion, essentially invisible to microwave energy
Approximately 4.88" x 4.94" (126mm x 124mm including tabs)
Locking button/pin tab for secure mounting
Direct drop-in replacement matching the original mounting and dimensions
Replaces MCK69074904, MCK69074902, 4957254, AP6888006, EAP12725272, ALG55468, PD00056750, PS12725272
Compatible with LG and select Bosch microwaves
Aftermarket replacement built to OEM-equivalent quality standards
Simple 15 to 30 minute repair
Product Specifications
Part Number
XPMCK69074904
OEM Part Number
MCK69074904
Part Type
Microwave Waveguide Cover / Insulator (Mica Plate)
Condition
Aftermarket Replacement
Material
Mica
Dimensions
Approx. 4.88" x 4.94" (126mm x 124mm incl. tabs)
Mounting
Locking button/pin tab
Function
Protects the waveguide opening and ensures even microwave distribution
Repair Difficulty
Easy — 15 to 30 minutes
Quantity
1 waveguide cover
Compatible Brands
LG, select Bosch
Installation Notes
⚠️ Unplug Microwave Before Starting — Be Aware Of The High-Voltage Capacitor Inside Unplug the microwave from the wall outlet and move it away from the wall to give yourself room to work. Wear work gloves. Carefully remove the microwave's exterior cover, taking care not to tear or damage the clips that secure it in place, and set it aside. Microwave ovens contain a high-voltage capacitor that can retain a dangerous electrical charge even after the unit is unplugged — avoid touching internal components near the capacitor and magnetron while working inside the cabinet. Locate the old waveguide cover inside the cavity, typically secured by a locking tab or small screws depending on your model. Remove the old cover, taking care not to damage the surrounding cavity surface. Install the new MCK69074904 in the same position, making sure it seats flush and the locking tab engages securely. Reinstall the exterior cover, restore power, and run a quick test with a cup of water to confirm normal heating with no sparking or arcing. Tools needed: Phillips screwdriver (model-dependent), work gloves.
Frequently Asked Questions
I see sparks inside my microwave. Is this the part I need?
Yes, this is the classic and most direct symptom of a damaged waveguide cover. Old, damp, warped, or food-contaminated mica can react to microwave energy by arcing at the point where it's damaged. Replacing the cover typically resolves this sparking immediately.
Is it safe to keep using my microwave if I notice sparking?
No, it's best to stop using the microwave once you notice sparking or arcing and replace the cover as soon as possible. Continued arcing can cause more serious damage to the magnetron and other internal components, turning a simple, inexpensive repair into a much costlier one.
What is mica, and why is it used for this part?
Mica is a naturally heat-resistant, corrosion-resistant material that is essentially invisible to microwave energy, meaning it doesn't interfere with or absorb the microwaves passing through it. This makes it ideal for a cover positioned directly in the path of the microwave energy entering the cavity, since it protects the opening without disrupting how the microwave actually cooks food.
Is this an OEM or aftermarket part?
This is an aftermarket replacement part built to OEM-equivalent quality standards. It is not a genuine LG OEM part, but is manufactured to match the mica composition, dimensions, and mounting configuration of the original MCK69074904 waveguide cover used in compatible LG and Bosch microwaves.
Shop With Confidence
A U.S.-based appliance parts retailer specializing in genuine OEM and high-quality replacement parts. We stock components for all major appliance brands and offer fast shipping from our U.S. warehouse. Our team is available to help verify compatibility before you purchase.
✓ Quality Aftermarket Parts ✓ Fast US Shipping ✓ Compatibility Support ✓ Secure Checkout
EXPMS33 Microwave Door Switch Set – Universal Replacement for GE, Whirlpool, Samsung, LG & Kenmore Microwaves
Product Description
Restore safe and reliable microwave operation with the EXPMS33 Microwave Door Switch Set. This high-quality aftermarket kit includes the commonly used microwave interlock door switches, designed to ensure the unit operates only when the door is fully closed. Failed or worn door switches can cause the microwave not to start, stop mid-cycle, blow fuses, or run intermittently. Replacing the complete switch set helps restore proper door sensing and safe microwave performance.
Note: All Switches are not the Same
Replaces all Following Microwave Door Switch Parts number and more:
Normally Closed Cross Reference Info: WB24X10075, WB24X800, WB24X830, WB24X0830, WB24X817, WB24X10112, FFSBA016 (No Fuse Included), 00606695, 5304408937
Normally open Cross Reference Info: 3B3362F, WB24X816, 6600W1K003C, QSWMA085WRE0, WB24X829, WB24X10180, 00606693, 00633795, WB23X10019, 241201600929, 5304408938.
Compatibility
This universal microwave door switch set fits many GE, Whirlpool, Samsung, LG, Frigidaire, Panasonic, and Kenmore microwave ovens.
Commonly used in countertop, over-the-range, and built-in microwave models that use standard NO (Normally Open) and NC (Normally Closed) interlock switches.
Always confirm switch configuration and terminal layout before ordering.Contact our support team if you’re unsure.
✅ Key Features
🔄 Aftermarket Replacement Set – Designed to match OEM electrical performance
🚪 Complete Door Interlock Solution – Includes multiple switches for proper safety operation
⚡ Reliable Electrical Contacts – Ensures consistent microwave startup
💪 Durable Construction – Built for repeated door open/close cycles
🛡️ Fixes Common Issues – Solves microwave not starting, stopping mid-cycle, or blowing fuses
📐 Product Specification
Part Number: EXPMS33
Component Type: Microwave Door Interlock Switch Set
Include Switch Types: 2 X Normally Open (NO) and 1 X Normally Closed (NC)
Voltage Rating: 125/250V AC | 16A, 1/2HP
Terminal Type: Spade terminals
Mounting: Snap-in brackets (model dependent)
Quality Level: Aftermarket replacement (not OEM)
🛠️ Installation Notes
Tools Needed: Phillips screwdriver
⚠️ Safety First: Unplug the microwave before servicing. Microwaves contain high-voltage components—always disconnect power before repair.
Steps:
Disconnect power from the microwave.
Remove the outer cover or control panel as required.
Locate the door switch housing near the latch assembly.
Remove old switches one at a time, noting wire positions.
Install the new EXPMS33 switches in the same locations.
Reassemble panels and restore power.
Test microwave operation.
⏱️ Time Required: 15–25 minutes
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WG24 Microwave Universal Mica Sheet, Waveguide Cover (2.5" × 4.2") – Fits Most Microwave Ovens
Product Description
Restore safe and efficient microwave operation with the WG24 Microwave Universal Mica Sheet / Waveguide Cover. This heat-resistant mica sheet protects the waveguide opening from grease, moisture, and food splatter while allowing microwaves to pass through efficiently. A damaged or burned waveguide cover can cause sparking, arcing, or uneven heating. Replacing it with this durable WG24 mica sheet helps prevent damage to the magnetron and ensures consistent microwave performance.
Replaces Part Numbers
WG47, Microwave Mica Sheet, Universal Waveguide Cover, Microwave Waveguide Plate
Compatibility
This universal microwave mica sheet is compatible with most countertop, over-the-range, and built-in microwave ovens from major brands including GE, Whirlpool, Samsung, LG, Panasonic, Kenmore, Frigidaire, and more.
⚠️ Universal fit — may be trimmed to size if required.
Always verify dimensions before ordering.Contact our support team if you’re unsure.
✅ Key Features
🔄 Universal Replacement – Fits most microwave waveguide openings
🔥 Heat-Resistant Mica Material – Withstands high temperatures without burning
⚡ Prevents Sparking & Arcing – Protects waveguide and magnetron
✂️ Customizable Fit – Can be trimmed for exact size
💰 Cost-Effective Repair – Extends microwave life at minimal cost
📐 Product Specification
Part Number: WG24
Component Type: Microwave Waveguide Cover / Mica Sheet
Material: Natural mica
Dimensions: 2.5 inches × 4.2 inches
Thickness: OEM-equivalent
Color: Light brown
Compliance: Built to OEM-equivalent quality standards (not OEM)
🛠️ Installation Notes
Tools Needed: Scissors (if trimming required), Phillips screwdriver
⚠️ Safety First: Unplug the microwave before servicing.
Steps:
Disconnect microwave from power.
Remove the old or damaged waveguide cover.
Clean the waveguide opening area.
Trim the WG24 mica sheet if necessary.
Install the new mica sheet using the original mounting method.
Restore power and test microwave operation.
⏱️ Time Required: 5–10 minutes
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🔄 30-Day Return Policy
Eliminate sparking and protect your microwave — Add to Cart Now for a simple, effective repair!