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GCM219R71C684KA37D Equivalent & Substitute Parts
Part Overview
The GCM219R71C684KA37D is a 0.68 µF ±10% 16V ceramic capacitor in 0805 (2012 Metric) package manufactured by Murata Electronics. This part features X7R temperature coefficient, AEC-Q200 automotive rating, and ROHS3 compliance. The part is designated as Not For New Designs, making equivalent and substitute parts necessary for ongoing production and design updates. Substitute parts maintain the same capacitance and tolerance while offering improved voltage ratings, alternative temperature coefficients, or active product status.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Capacitance | 0.68 µF |
| Tolerance | ±10% |
| Voltage - Rated | 16V |
| Temperature Coefficient | X7R |
| Operating Temperature Range | -55°C ~ 125°C |
| Package / Case | 0805 (2012 Metric) |
| Mounting Type | Surface Mount, MLCC |
| Size / Dimension | 0.079" L x 0.049" W (2.00mm x 1.25mm) |
| Ratings | AEC-Q200 |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution for GCM219R71C684KA37D is determined by the following criteria:
Electrical Parameters (Must Match or Exceed):
- Capacitance: 0.68 µF (exact match required)
- Tolerance: ±10% (exact match required)
- Voltage Rating: 16V minimum (equal or higher voltage acceptable)
- Temperature Coefficient: X7R or X8R (X8R provides extended temperature range to 150°C)
Mechanical Parameters (Must Match):
- Package: 0805 (2012 Metric)
- Mounting Type: Surface Mount, MLCC
- Physical Dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm)
Compliance & Certification (Must Match):
- AEC-Q200 automotive rating
- ROHS3 compliance
- MSL 1 (Unlimited)
Substitute parts are grouped into three categories: direct equivalents (same voltage rating), voltage upgrades (higher voltage rating), and temperature coefficient variants (X8R with extended operating range).
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Capacitance | Tolerance | Voltage | Temp Coeff | Operating Temp | Package | Product Status | Thickness |
|---|---|---|---|---|---|---|---|---|---|
| GCM219R71C684KA37D | Murata Electronics | 0.68 µF | ±10% | 16V | X7R | -55°C ~ 125°C | 0805 | Not For New Designs | 0.037" (0.95mm) |
| KAM21KR71C684KU | KYOCERA AVX | 0.68 µF | ±10% | 16V | X7R | -55°C ~ 125°C | 0805 | Active | 0.037" (0.94mm) |
| GCM21BR71E684KA55L | Murata Electronics | 0.68 µF | ±10% | 25V | X7R | -55°C ~ 125°C | 0805 | Active | 0.055" (1.40mm) |
| C0805C684K3RACAUTO | KEMET | 0.68 µF | ±10% | 25V | X7R | -55°C ~ 125°C | 0805 | Active | 0.055" (1.40mm) |
| C0805C684K5RACAUTO | KEMET | 0.68 µF | ±10% | 50V | X7R | -55°C ~ 125°C | 0805 | Active | 0.057" (1.45mm) |
| CGA4J1X8R1E684K125AC | TDK Corporation | 0.68 µF | ±10% | 25V | X8R | -55°C ~ 150°C | 0805 | Active | 0.057" (1.45mm) |
| CGA4J1X8R1E684K125AD | TDK Corporation | 0.68 µF | ±10% | 25V | X8R | -55°C ~ 150°C | 0805 | Active | 0.059" (1.50mm) |
| CGA4J1X8R1E684K125AE | TDK Corporation | 0.68 µF | ±10% | 25V | X8R | -55°C ~ 150°C | 0805 | Active | 0.059" (1.50mm) |
| CGA4J3X7R1E684K125AB | TDK Corporation | 0.68 µF | ±10% | 25V | X7R | -55°C ~ 125°C | 0805 | Active | 0.057" (1.45mm) |
| CGA4J3X7R1E684K125AD | TDK Corporation | 0.68 µF | ±10% | 25V | X7R | -55°C ~ 125°C | 0805 | Active | 0.059" (1.50mm) |
| CGA4J3X7R1H684K125AB | TDK Corporation | 0.68 µF | ±10% | 50V | X7R | -55°C ~ 125°C | 0805 | Active | 0.057" (1.45mm) |
Engineering Selection Recommendations
Direct Equivalent (Same Voltage Rating): KAM21KR71C684KU from KYOCERA AVX is the direct equivalent to GCM219R71C684KA37D. Both parts maintain 16V rating, X7R temperature coefficient, and identical electrical specifications. KAM21KR71C684KU holds Active product status, making it suitable for new designs and ongoing production.
Voltage Upgrade Options (25V Rating): GCM21BR71E684KA55L (Murata Electronics), C0805C684K3RACAUTO (KEMET), CGA4J3X7R1E684K125AB (TDK Corporation), and CGA4J3X7R1E684K125AD (TDK Corporation) provide 25V rated alternatives with X7R temperature coefficient. All maintain -55°C ~ 125°C operating range and Active product status. These parts are suitable for applications requiring higher voltage margin.
Voltage Upgrade with Extended Temperature (25V, X8R): CGA4J1X8R1E684K125AC, CGA4J1X8R1E684K125AD, and CGA4J1X8R1E684K125AE from TDK Corporation offer 25V rating with X8R temperature coefficient, extending operating range to -55°C ~ 150°C. These parts are suitable for high-temperature automotive applications.
High Voltage Option (50V Rating): C0805C684K5RACAUTO (KEMET) and CGA4J3X7R1H684K125AB (TDK Corporation) provide 50V rated alternatives with X7R temperature coefficient. These parts are suitable for applications requiring maximum voltage headroom.
All substitute parts maintain AEC-Q200 automotive rating, ROHS3 compliance, and MSL 1 (Unlimited) moisture sensitivity level.
Frequently Asked Questions (FAQ)
Q: Can I use a 25V rated capacitor in place of the 16V GCM219R71C684KA37D? A: Yes. Higher voltage ratings are acceptable substitutes. A 25V capacitor maintains the same electrical performance in a 16V application while providing additional voltage margin. All 25V alternatives listed maintain identical capacitance, tolerance, and temperature coefficient specifications.
Q: What is the difference between X7R and X8R temperature coefficients? A: X7R maintains capacitance within ±15% across -55°C ~ 125°C operating range. X8R maintains capacitance within ±15% across -55°C ~ 150°C operating range. X8R variants extend maximum operating temperature by 25°C, suitable for high-temperature automotive environments.
Q: Are there thickness differences between substitute parts? A: Yes. The original GCM219R71C684KA37D has 0.037" (0.95mm) thickness. Most 25V and 50V rated substitutes range from 0.055" to 0.059" thickness due to higher voltage requirements. Verify PCB layout clearance before substitution.
Q: Which substitute part is the best direct replacement? A: KAM21KR71C684KU from KYOCERA AVX is the direct equivalent, matching all electrical and mechanical specifications of the original part while maintaining Active product status.
Q: Are all substitute parts AEC-Q200 rated? A: Yes. All substitute parts listed maintain AEC-Q200 automotive qualification and ROHS3 compliance, meeting automotive industry standards.
Q: Can I use parts with different manufacturers interchangeably? A: Yes, provided all electrical parameters (capacitance, tolerance, voltage, temperature coefficient) and mechanical specifications (package, dimensions) match. All listed substitutes are qualified alternatives meeting identical performance criteria.
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