GRM1555C2A7R9DA01J Equivalent & Substitute Parts

Part Overview

The GRM1555C2A7R9DA01J is a 7.9 pF ceramic capacitor manufactured by Murata Electronics, rated for 100V with C0G/NP0 temperature coefficient characteristics. This component is packaged in 0402 (1005 Metric) form factor for surface mount applications. The part is designated as Not For New Designs, indicating it has been superseded in Murata's product line. Finding equivalent or substitute parts is necessary for ongoing production support, legacy system maintenance, and design flexibility when the primary part becomes unavailable.

Substiute Parts

GRM1555C2A7R9DA01J

Murata ElectronicsIn Stock: 859GRM1555C2A7R9DA01J Datasheet

Current PartRFQ

GRM0335C2A7R9CA01D

Murata ElectronicsIn Stock: 1093GRM0335C2A7R9CA01D Datasheet

MFR RecommendedRFQ

CBR04C799B5GAC

KEMETIn Stock: 8382CBR04C799B5GAC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the GRM1555C2A7R9DA01J is determined by the following critical parameters:

Primary Substitution Criteria:

• Capacitance value: 7.9 pF (exact match required)
• Temperature coefficient: C0G/NP0 (stability requirement)
• Operating temperature range: -55°C ~ 125°C (minimum)
• Voltage rating: Equal to or greater than 100V
• Mounting type: Surface Mount, MLCC
• RoHS compliance: ROHS3 Compliant

Secondary Considerations:

• Package form factor (0402 preferred for direct PCB compatibility)
• Tolerance specification (tighter tolerance acceptable)
• Moisture sensitivity level (MSL 1 preferred)

The substitute parts listed below meet the primary substitution criteria. Package differences are noted where applicable, as they may affect PCB layout and assembly processes.

Parameter Comparison

Engineering Selection Recommendations

GRM0335C2A7R9CA01D (Murata Electronics)

This substitute is the recommended primary alternative. It maintains identical electrical specifications (7.9 pF, 100V, C0G/NP0) and operating temperature range. The part is in Active product status, ensuring long-term availability. The tighter tolerance (±0.25pF vs ±0.5pF) provides improved precision. The primary design consideration is the package change from 0402 to 0201 (0603 Metric), which requires PCB layout modification. The smaller footprint (0.60mm x 0.30mm vs 1.00mm x 0.50mm) and reduced thickness (0.33mm vs 0.55mm) may affect assembly processes and component placement density.

CBR04C799B5GAC (KEMET)

This substitute maintains the 0402 package form factor, eliminating PCB layout changes. Electrical specifications match the primary part (7.9 pF, C0G/NP0, -55°C ~ 125°C operating range). The part is in Active product status. The voltage rating is 50V, which is lower than the original 100V specification. This substitute is suitable only for applications where the circuit operates at or below 50V. The tolerance specification (±0.1pF) is tighter than the original part. The part is specified for RF and microwave applications with high Q and low ESR characteristics.

Frequently Asked Questions (FAQ)

Q: Can GRM0335C2A7R9CA01D be used as a direct replacement without PCB modification?

A: No. The GRM0335C2A7R9CA01D uses a 0201 (0603 Metric) package versus the original 0402 (1005 Metric) package. PCB footprint redesign is required. The smaller dimensions (0.60mm x 0.30mm vs 1.00mm x 0.50mm) necessitate layout changes and may affect assembly equipment compatibility.

Q: Is CBR04C799B5GAC suitable for all applications using GRM1555C2A7R9DA01J?

A: No. The CBR04C799B5GAC has a 50V voltage rating compared to the original 100V rating. This substitute is only appropriate for circuits operating at 50V or below. Verify circuit voltage requirements before selection.

Q: What are the tolerance differences between these parts?

A: The original GRM1555C2A7R9DA01J specifies ±0.5pF tolerance. The GRM0335C2A7R9CA01D provides ±0.25pF tolerance, and the CBR04C799B5GAC provides ±0.1pF tolerance. Tighter tolerances reduce capacitance variation but may affect cost and availability.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited), matching the compliance profile of the original part.

Q: Which substitute is recommended for new PCB designs?

A: The GRM0335C2A7R9CA01D is recommended. It is in Active product status, maintains full electrical equivalence at 100V, and offers improved tolerance specifications. PCB layout must accommodate the 0201 package form factor.