Solid Capacitor 6.3V–50V 100uF–1000uF for Motherboard and Graphics Card Applications

Solid Polymer Electrolytic Capacitor — 6.3V–50V, 100µF–4700µF, Motherboard & GPU Repair

Solid-state (polymer) electrolytic capacitors replace the liquid electrolyte of conventional aluminum electrolytic capacitors with a conductive polymer dielectric. This fundamental change eliminates the primary failure mode of standard electrolytic capacitors — electrolyte evaporation and venting — while delivering dramatically lower ESR, higher ripple current capability, and a rated operating life of 2000 hours at 105°C. These are the capacitors used on high-end motherboards, server boards, and graphics cards in VRM (voltage regulator module) circuits.

10 pieces per pack. Select the specific voltage/capacitance/size combination from the dropdown.

Key Specifications

• Type: Solid polymer electrolytic capacitor (plug-in / through-hole, radial leads)
• Rated Voltage Range: 6.3V, 10V, 16V, 25V, 35V, 50V, 63V, 100V
• Capacitance Range: 100µF to 4700µF (value and size as selected)
• Tolerance: +20% (M-grade, standard for electrolytic capacitors)
• ESR: Ultra-low (typically 5–30mΩ at 100kHz — 10–50× lower than standard electrolytic)
• Rated Ripple Current: High (polymer dielectric handles high ripple without heating)
• Load Life: 2000 hours at 105°C
• Shape: Cylindrical, radial lead wire
• Package: Through-hole (radial)
• RoHS Compliant: Yes
• Quantity: 10 pieces per pack

Solid Polymer vs. Standard Liquid Electrolytic Capacitors

• ESR: Solid polymer 5–30mΩ vs. liquid electrolytic 100–500mΩ at 100kHz — critical for VRM stability and transient response
• Failure mode: Solid polymer capacitors degrade gracefully (capacitance decreases, ESR increases slowly) vs. liquid electrolytic which can vent, leak, or explode
• Boiling point of dielectric: Polymer ≥350°C vs. liquid electrolyte ~100°C — solid capacitors cannot burst under normal operating conditions
• High-temperature stability: Polymer dielectric remains stable at 105°C; liquid electrolyte evaporates and degrades
• Ripple current handling: Solid polymer handles 2–5× higher ripple current for the same capacitance value
• Lifespan: Solid polymer 2000h+ at 105°C vs. liquid electrolytic 1000–1500h at 105°C

VRM and Motherboard Application Notes

In CPU and GPU voltage regulator modules (VRM), output capacitors must handle high-frequency switching ripple (100kHz–1MHz) with minimal ESR to maintain stable output voltage during load transients. Standard liquid electrolytic capacitors have ESR too high for modern VRM designs — solid polymer capacitors are mandatory for high-performance VRM output filtering.

• Replace bulging, leaking, or failed electrolytic capacitors on motherboards with the same voltage/capacitance rating in solid polymer
• Upgrade standard electrolytic capacitors in VRM output stages to solid polymer for improved transient response and stability
• Match physical dimensions (diameter × height) to the PCB footprint — multiple size options available for each capacitance value
• Polarity: longer lead = positive (+), shorter lead = negative (−). Match to PCB marking (stripe on capacitor body = negative)

Size Selection Guide

The variant name includes the physical dimensions (diameter × height in mm). Common footprints:

• 5 × 7mm: Small VRM output caps, tight PCB layouts
• 6.3 × 8–12mm: Standard motherboard VRM positions
• 8 × 8–17mm: Higher capacitance, server board and GPU VRM
• 10 × 12–17mm: Large bulk capacitance, power supply output

Typical Applications

• Motherboard VRM output capacitor replacement and upgrade
• GPU (graphics card) VRM repair — replacing failed or bulging capacitors
• Server board and workstation motherboard capacitor replacement
• DC-DC converter output filtering (buck, boost, SEPIC)
• Switching power supply output capacitor
• Industrial control board power supply decoupling
• Audio amplifier power supply filtering (low ESR reduces hum)
• Embedded system power rail decoupling

Package Contents

• 10 × solid polymer electrolytic capacitor (voltage, capacitance, and size as selected)

Enjoy free standard shipping on all orders over $199 USD. Orders are processed within 1–2 business days.

Not satisfied? Return any item within 90 days of purchase for a full refund or exchange. Items must be in original condition.

We are committed to quality, reliability, and customer satisfaction. Every product is carefully selected and tested to meet the highest standards.