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GCM188R71C683KA37D Equivalent & Substitute Parts
Part Overview
The GCM188R71C683KA37D is a 0.068 µF ±10% 16V X7R ceramic capacitor in 0603 (1608 Metric) surface mount package manufactured by Murata Electronics. This part carries AEC-Q200 automotive qualification and ROHS3 compliance. The product status is listed as Not For New Designs, making identification of active equivalent and substitute parts essential for ongoing production and design updates.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Capacitance | 0.068 µF |
| Tolerance | ±10% |
| Voltage - Rated | 16V |
| Temperature Coefficient | X7R |
| Operating Temperature Range | -55°C ~ 125°C |
| Package / Case | 0603 (1608 Metric) |
| Mounting Type | Surface Mount, MLCC |
| Ratings | AEC-Q200 |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution for GCM188R71C683KA37D is determined by the following critical parameters: capacitance value (0.068 µF), tolerance (±10%), package format (0603 / 1608 Metric), temperature coefficient (X7R or compatible), operating temperature range (-55°C ~ 125°C minimum), surface mount MLCC mounting type, AEC-Q200 automotive qualification, and ROHS3 compliance.
Substitute parts are grouped into two categories:
Parametric Equivalents: Parts with identical electrical specifications (0.068 µF, ±10%, X7R, -55°C ~ 125°C) in the same 0603 package from alternative manufacturers.
Upgrade Substitutes: Parts with identical or higher voltage ratings (50V vs. 16V), same capacitance and tolerance, compatible temperature coefficients, and active product status. Higher voltage ratings provide design margin and are electrically compatible in 16V applications.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Capacitance | Tolerance | Voltage - Rated | Temperature Coefficient | Operating Temperature | Package / Case | Product Status | AEC-Q200 | RoHS3 |
|---|---|---|---|---|---|---|---|---|---|---|
| GCM188R71C683KA37D | Murata Electronics | 0.068 µF | ±10% | 16V | X7R | -55°C ~ 125°C | 0603 (1608 Metric) | Not For New Designs | Yes | Yes |
| GCM188R71H683KA57D | Murata Electronics | 0.068 µF | ±10% | 50V | X7R | -55°C ~ 125°C | 0603 (1608 Metric) | Not For New Designs | Yes | Yes |
| GCJ188R71C683KA01D | Murata Electronics | 0.068 µF | ±10% | 16V | X7R | -55°C ~ 125°C | 0603 (1608 Metric) | Active | Yes | Yes |
| C0603C683K5RACAUTO | KEMET | 0.068 µF | ±10% | 50V | X7R | -55°C ~ 125°C | 0603 (1608 Metric) | Active | Yes | Yes |
| CGA3E2X7R1H683K080AA | TDK Corporation | 0.068 µF | ±10% | 50V | X7R | -55°C ~ 125°C | 0603 (1608 Metric) | Active | Yes | Yes |
| CGA3E2X7R1H683K080AD | TDK Corporation | 0.068 µF | ±10% | 50V | X7R | -55°C ~ 125°C | 0603 (1608 Metric) | Not For New Designs | Yes | Yes |
| CGA3E2X8R1E683K080AA | TDK Corporation | 0.068 µF | ±10% | 25V | X8R | -55°C ~ 150°C | 0603 (1608 Metric) | Not For New Designs | Yes | Yes |
| CGA3E2X8R1E683K080AD | TDK Corporation | 0.068 µF | ±10% | 25V | X8R | -55°C ~ 150°C | 0603 (1608 Metric) | Not For New Designs | Yes | Yes |
Engineering Selection Recommendations
For Direct Replacement (Parametric Equivalent): GCJ188R71C683KA01D from Murata Electronics is the primary parametric equivalent with identical electrical specifications (0.068 µF, ±10%, 16V, X7R, -55°C ~ 125°C) and Active product status. This part maintains full compatibility with the original GCM188R71C683KA37D in all electrical and mechanical aspects.
For Upgraded Voltage Margin: C0603C683K5RACAUTO (KEMET) and CGA3E2X7R1H683K080AA (TDK Corporation) provide 50V rated voltage with identical capacitance, tolerance, temperature coefficient, and operating temperature range. Both parts carry Active product status and AEC-Q200 automotive qualification. The 50V rating provides additional design margin in 16V applications without electrical incompatibility.
For Alternative Temperature Coefficient: CGA3E2X8R1E683K080AA and CGA3E2X8R1E683K080AD (TDK Corporation) offer X8R temperature coefficient with extended operating temperature to 150°C and 25V voltage rating. These parts are suitable only when the higher temperature range (-55°C ~ 150°C) is required and the application can tolerate X8R characteristics.
Avoid for New Designs: GCM188R71H683KA57D, CGA3E2X7R1H683K080AD, CGA3E2X8R1E683K080AA, and CGA3E2X8R1E683K080AD carry Not For New Designs status and should be used only for legacy production support or repair applications.
Frequently Asked Questions (FAQ)
Q: Can GCJ188R71C683KA01D replace GCM188R71C683KA37D directly? A: Yes. GCJ188R71C683KA01D is a parametric equivalent with identical capacitance (0.068 µF), tolerance (±10%), voltage rating (16V), temperature coefficient (X7R), and operating temperature range (-55°C ~ 125°C). Both are 0603 package surface mount MLCCs with AEC-Q200 qualification and ROHS3 compliance. The primary difference is Active product status for GCJ188R71C683KA01D versus Not For New Designs for the original part.
Q: Are 50V rated parts compatible in a 16V circuit? A: Yes. A 50V rated capacitor operates safely in a 16V application. The voltage rating indicates the maximum voltage the capacitor can withstand; operating at lower voltages presents no electrical incompatibility. C0603C683K5RACAUTO and CGA3E2X7R1H683K080AA both provide this upgrade path with identical capacitance and tolerance.
Q: What is the difference between X7R and X8R temperature coefficients? A: X7R maintains capacitance within ±15% across -55°C to 125°C. X8R maintains capacitance within ±15% across -55°C to 150°C, offering extended high-temperature operation. X8R parts (CGA3E2X8R1E683K080AA, CGA3E2X8R1E683K080AD) are suitable only when the application requires operation above 125°C.
Q: Are all substitute parts automotive qualified? A: Yes. All listed substitute parts carry AEC-Q200 automotive qualification and ROHS3 compliance, meeting the same regulatory and reliability standards as the original GCM188R71C683KA37D.
Q: What does Epoxy Mountable mean on CGA3E2X7R1H683K080AD and CGA3E2X8R1E683K080AD? A: Epoxy Mountable indicates the part is designed to withstand epoxy encapsulation processes used in some manufacturing environments. This feature does not affect electrical performance in standard surface mount applications without epoxy encapsulation.
Q: Should I select an Active status part over Not For New Designs? A: For new product designs, select Active status parts: GCJ188R71C683KA01D, C0603C683K5RACAUTO, or CGA3E2X7R1H683K080AA. Not For New Designs parts are appropriate only for sustaining production of existing designs or repair applications where the original part is no longer available.
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