B37979N1561J000 Equivalent & Substitute Parts

Part Overview

The B37979N1561J000 is a 560 pF ceramic capacitor manufactured by EPCOS - TDK Electronics, rated for 100V with C0G/NP0 temperature coefficient and ±5% tolerance. This component is designed for RF and microwave applications requiring high-frequency performance and stable capacitance across temperature ranges from -55°C to 125°C. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility for existing designs.

Substiute Parts

B37979N1561J000

EPCOS - TDK ElectronicsIn Stock: 976B37979N1561J000 Datasheet

Current PartRFQ

K561J15C0GF5TL2

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 33553K561J15C0GF5TL2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the B37979N1561J000 is determined by the following critical parameters:

Electrical Equivalence Requirements:

• Capacitance value: 560 pF (exact match required)
• Tolerance: ±5% (maintains circuit performance specifications)
• Temperature coefficient: C0G/NP0 (ensures stable capacitance across operating temperature range)
• Operating temperature range: -55°C to 125°C (minimum requirement)

Mechanical Compatibility Requirements:

• Mounting type: Through Hole (PCB assembly compatibility)
• Package type: Radial (physical form factor)
• Lead spacing: 0.098" (2.50mm) (PCB footprint compatibility)

Compliance Requirements:

• RoHS3 compliance (regulatory requirement)

The substitute part K561J15C0GF5TL2 meets all electrical equivalence and mechanical compatibility criteria. The voltage rating of the substitute (50V) is lower than the original part (100V); however, this does not prevent substitution in applications where the circuit design voltage does not exceed 50V.

Parameter Comparison

Engineering Selection Recommendations

The K561J15C0GF5TL2 is an active, in-stock alternative to the obsolete B37979N1561J000. Both components share identical capacitance, tolerance, temperature coefficient, and operating temperature specifications. The primary design consideration is voltage rating: the substitute operates at 50V maximum, compared to the original 100V rating.

Selection of K561J15C0GF5TL2 is appropriate for applications where circuit voltage does not exceed 50V. For designs requiring 100V operation, alternative 560 pF C0G/NP0 radial capacitors with 100V or higher ratings must be sourced.

Both components maintain ROHS3 compliance and identical lead spacing (2.50mm), ensuring PCB footprint compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can K561J15C0GF5TL2 be used as a direct replacement for B37979N1561J000?

A: Direct replacement is possible only if the circuit design voltage does not exceed 50V. The substitute maintains identical capacitance (560 pF), tolerance (±5%), temperature coefficient (C0G/NP0), and lead spacing (2.50mm). If the original design operates above 50V, alternative components must be selected.

Q: Are there physical differences between these components?

A: Both components are radial through-hole capacitors with 2.50mm lead spacing. The substitute (K561J15C0GF5TL2) has a smaller body dimension (4.00mm L x 2.60mm W) compared to the original (5.50mm L x 5.00mm W). PCB footprint compatibility is maintained through identical lead spacing.

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

A: C0G/NP0 designation indicates negligible capacitance change across the operating temperature range (-55°C to 125°C). This specification is critical for RF and microwave applications requiring stable frequency response and impedance characteristics.

Q: Are both components RoHS compliant?

A: Yes, both B37979N1561J000 and K561J15C0GF5TL2 are ROHS3 compliant, meeting current regulatory requirements for electronic component manufacturing and assembly.

Q: What is the lead style difference between these parts?

A: The original component features kinked formed leads, while the substitute has straight leads. Both configurations are compatible with standard through-hole PCB assembly processes and maintain the specified 2.50mm lead spacing.