GRM1555C2A9R9DA01D Equivalent & Substitute Parts

Part Overview

The GRM1555C2A9R9DA01D is a 9.9 pF ceramic capacitor manufactured by Murata Electronics in the 0402 (1005 Metric) package. This surface mount multilayer ceramic capacitor (MLCC) operates at 100V with C0G/NP0 temperature coefficient and is rated for general purpose applications across an operating temperature range of -55°C to 125°C. The part is currently marked as Not For New Designs, making identification of active equivalent and substitute components essential for ongoing production support and new design alternatives.

Substiute Parts

GRM1555C2A9R9DA01D

Murata ElectronicsIn Stock: 857GRM1555C2A9R9DA01D Datasheet

Current PartRFQ

GRM0335C2A9R9CA01J

Murata ElectronicsIn Stock: 1040GRM0335C2A9R9CA01J Datasheet

MFR RecommendedRFQ

CBR04C999B5GAC

KEMETIn Stock: 826CBR04C999B5GAC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the GRM1555C2A9R9DA01D is determined by the following critical parameters:

Primary Substitution Criteria:

• Capacitance value: 9.9 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 size compatibility (0402 preferred for direct replacement)
• Tolerance specifications (tighter tolerance acceptable)
• Product status (Active status preferred for long-term availability)

Two substitute parts meet these criteria with variations in package size and voltage rating.

Parameter Comparison

Engineering Selection Recommendations

GRM0335C2A9R9CA01J (Murata Electronics)

This substitute maintains identical electrical specifications (9.9 pF, 100V, C0G/NP0) with improved tolerance (±0.25pF versus ±0.5pF). The primary design consideration is package size: the 0201 (0603 Metric) package is smaller than the original 0402 (1005 Metric). This substitute is suitable for applications where PCB space is constrained and the smaller footprint is compatible with board layout. The part carries Active product status, ensuring long-term availability and supply chain stability.

CBR04C999B5GAC (KEMET)

This substitute maintains the same 0402 (1005 Metric) package and physical dimensions as the original part, enabling direct PCB footprint compatibility. The electrical specifications are identical in capacitance (9.9 pF) and temperature coefficient (C0G/NP0). The voltage rating is 50V, which is lower than the original 100V specification. This substitute is applicable only in circuits where the maximum operating voltage does not exceed 50V. The part features High Q, Low Loss, and Ultra Low ESR characteristics optimized for RF and microwave applications. The part carries Active product status.

Frequently Asked Questions (FAQ)

Q: Can GRM0335C2A9R9CA01J be used as a direct replacement on existing PCBs designed for GRM1555C2A9R9DA01D?

A: No. The GRM0335C2A9R9CA01J uses a 0201 (0603 Metric) package, which has different footprint dimensions (0.024" L x 0.012" W) compared to the original 0402 (1005 Metric) package (0.039" L x 0.020" W). PCB layout modifications are required. However, the improved tolerance (±0.25pF) provides better capacitance stability.

Q: Is CBR04C999B5GAC suitable for all applications using GRM1555C2A9R9DA01D?

A: CBR04C999B5GAC is suitable only for applications where the circuit voltage does not exceed 50V. The original part is rated for 100V. If your circuit operates at voltages above 50V, this substitute is not appropriate. The identical 0402 package allows direct PCB replacement for voltage-compatible applications.

Q: What is the significance of the C0G/NP0 temperature coefficient?

A: C0G/NP0 indicates a temperature coefficient of 0 ppm/°C, meaning the capacitance value remains stable across the operating temperature range of -55°C to 125°C. All three parts (main and substitutes) maintain this specification, ensuring consistent circuit performance across temperature variations.

Q: Are all three parts RoHS3 compliant?

A: Yes. The main part GRM1555C2A9R9DA01D and both substitutes (GRM0335C2A9R9CA01J and CBR04C999B5GAC) are ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited), meeting environmental and regulatory requirements.

Q: Why is the original part marked "Not For New Designs"?

A: The GRM1555C2A9R9DA01D is in end-of-life status. Murata Electronics recommends using active alternatives for new designs. Both substitute parts carry Active product status, ensuring continued manufacturing and supply availability.