GCM21BR71C274KA37K Equivalent & Substitute Parts

Part Overview

The GCM21BR71C274KA37K is a 0.27 µF ceramic capacitor rated at 16V with X7R temperature coefficient, manufactured by Murata Electronics in 0805 (2012 Metric) surface mount package. This component is classified as Not For New Designs, indicating it has been superseded in Murata's product portfolio. Identification of equivalent and substitute parts is necessary for ongoing support of existing designs, legacy system maintenance, and procurement of functionally compatible alternatives that meet the same electrical and mechanical specifications.

Substiute Parts

GCM21BR71C274KA37K

Murata ElectronicsIn Stock: 1087GCM21BR71C274KA37K Datasheet

Current PartRFQ

GCM188R71C274KA37J

Murata ElectronicsIn Stock: 10813GCM188R71C274KA37J Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the GCM21BR71C274KA37K is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Capacitance: 0.27 µF
• Tolerance: ±10%
• Voltage Rating: 16V
• Temperature Coefficient: X7R
• Operating Temperature Range: -55°C ~ 125°C

Compliance & Certification (Must Match):

• AEC-Q200 automotive rating
• ROHS3 compliance
• Moisture Sensitivity Level 1

Mechanical Considerations: Package and case form factor may differ while maintaining surface mount, MLCC mounting type. Dimensional variations in length, width, and thickness are permissible provided the substitute part physically fits the PCB layout and does not violate height or thickness constraints of the application.

The substitute part GCM188R71C274KA37J meets all electrical and compliance requirements but differs in package size (0603 vs. 0805), representing a smaller footprint alternative suitable for space-constrained applications.

Parameter Comparison

Engineering Selection Recommendations

GCM21BR71C274KA37K (Main Part): This part is classified as Not For New Designs. It remains suitable for replacement, repair, and maintenance of existing systems where the 0805 package footprint is already established on the PCB. The part carries full AEC-Q200 automotive qualification and ROHS3 compliance, supporting continued use in automotive applications.

GCM188R71C274KA37J (Substitute Part): This part is Active in Murata's product portfolio and is the recommended alternative for new designs. It provides identical electrical performance and compliance certifications while offering a smaller 0603 package footprint. The substitute is suitable for applications where PCB space optimization is required. Physical layout compatibility must be verified before implementation, as the reduced dimensions (0.63mm shorter length, 0.18mm narrower width, 0.55mm thinner) require confirmation that the component fits within the available PCB space and does not violate assembly or thermal constraints.

Frequently Asked Questions (FAQ)

Q: Can GCM188R71C274KA37J be used as a direct replacement for GCM21BR71C274KA37K?

A: Electrical and functional compatibility is confirmed. The substitute part meets identical capacitance, voltage, tolerance, and temperature coefficient specifications. However, the package size differs (0603 vs. 0805). Direct PCB footprint replacement is not possible without layout modification. The substitute requires a smaller pad pattern and may not fit existing 0805 land patterns without redesign.

Q: What are the key differences between these two parts?

A: The primary difference is package size. GCM21BR71C274KA37K uses 0805 (2012 Metric) packaging with dimensions of 2.00mm x 1.25mm x 1.45mm maximum thickness. GCM188R71C274KA37J uses 0603 (1608 Metric) packaging with dimensions of 1.60mm x 0.80mm x 0.90mm maximum thickness. All electrical parameters, ratings, and compliance certifications are identical.

Q: Are both parts suitable for automotive applications?

A: Yes. Both parts carry AEC-Q200 automotive qualification and are suitable for automotive applications. GCM21BR71C274KA37K is Not For New Designs but remains qualified for existing automotive systems. GCM188R71C274KA37J is Active and recommended for new automotive designs.

Q: What is the significance of the product status difference?

A: GCM21BR71C274KA37K is marked Not For New Designs, indicating Murata has transitioned this part to end-of-life status. GCM188R71C274KA37J is Active, meaning it is currently manufactured and supported by Murata. For new product development, GCM188R71C274KA37J is the appropriate selection. For legacy system support, GCM21BR71C274KA37K remains available while inventory exists.

Q: Do both parts have the same moisture sensitivity rating?

A: Yes. Both parts have Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity precautions are required during storage, handling, or assembly.

Q: Can the substitute part be used in existing PCB designs without modification?

A: No. The substitute part requires PCB layout modification due to different package dimensions. The 0603 package is smaller and requires a different land pattern. PCB redesign and re-qualification of the assembly process are necessary before implementation.