Equivalent & Substitute Parts for ERD-S2TJ4R3V

Part Overview

The ERD-S2TJ4R3V is a 4.3 Ohm ±5% 1/4W axial carbon film through-hole resistor manufactured by Panasonic Electronic Components. This part is classified as obsolete, making identification of suitable substitute components necessary for ongoing design support and production continuity. The resistor is designed for general-purpose applications requiring 0.25W power dissipation with standard tolerance specifications.

Substiute Parts

ERD-S2TJ4R3V

Panasonic Electronic ComponentsIn Stock: 892ERD-S2TJ4R3V Datasheet

Current PartRFQ

CFM14JT4R30

Stackpole Electronics IncIn Stock: 5809CFM14JT4R30 Datasheet

DirectRFQ

CFR-25JB-52-4R3

YAGEOIn Stock: 9003CFR-25JB-52-4R3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ERD-S2TJ4R3V are qualified based on the following electrical and mechanical parameters:

• Resistance value: 4.3 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Power rating: 0.25W, 1/4W (exact match required)
• Composition: Carbon Film (exact match required)
• Package: Axial through-hole (exact match required)
• Operating temperature range: -55°C to 155°C (minimum requirement)
• Termination count: 2 (exact match required)

The identified substitute parts meet all core electrical specifications and are compatible with existing PCB designs and assembly processes for axial through-hole resistors.

Parameter Comparison

Engineering Selection Recommendations

CFM14JT4R30 (Stackpole Electronics Inc) is the primary substitute option. This part maintains active product status with ROHS3 compliance and REACH unaffected certification. The physical dimensions (1.70mm x 3.30mm) are nearly identical to the original ERD-S2TJ4R3V (1.70mm x 3.20mm), ensuring compatibility with existing PCB layouts. The temperature coefficient of ±400ppm/°C is within acceptable variance for general-purpose applications. Flame retardant coating and safety features provide enhanced reliability characteristics.

CFR-25JB-52-4R3 (YAGEO) is a secondary substitute option. This part also maintains active product status with ROHS3 compliance and REACH unaffected certification. However, the larger physical dimensions (2.40mm x 6.30mm) may require PCB layout verification to confirm mechanical fit within existing board designs. The asymmetric temperature coefficient (-500/+350ppm/°C) should be evaluated for temperature-sensitive applications.

Frequently Asked Questions (FAQ)

Q: Can CFM14JT4R30 and CFR-25JB-52-4R3 be used interchangeably with ERD-S2TJ4R3V?

A: Both parts meet the core electrical specifications (4.3 Ohms, ±5%, 0.25W, carbon film, axial package). However, physical dimensions differ. CFM14JT4R30 has minimal dimensional variance and is the preferred direct substitute. CFR-25JB-52-4R3 has significantly larger dimensions and requires PCB layout verification before implementation.

Q: What is the impact of temperature coefficient differences?

A: The original ERD-S2TJ4R3V specifies ±350ppm/°C. CFM14JT4R30 specifies ±400ppm/°C, representing a 50ppm/°C increase. CFR-25JB-52-4R3 specifies -500/+350ppm/°C, an asymmetric range. For applications with tight temperature stability requirements, these differences should be evaluated against circuit performance specifications.

Q: Are there compliance considerations for substitute selection?

A: The original part has no specified RoHS or REACH status. Both substitute parts are ROHS3 compliant and REACH unaffected, providing improved regulatory alignment for current manufacturing standards.

Q: Will CFM14JT4R30 fit existing PCB designs without modification?

A: CFM14JT4R30 dimensions (1.70mm diameter x 3.30mm length) are nearly identical to ERD-S2TJ4R3V (1.70mm diameter x 3.20mm length). The 0.10mm length difference is negligible for standard through-hole assembly processes and should not require PCB layout changes.

Q: What packaging formats are available for these substitutes?

A: CFM14JT4R30 is available in Cut Tape (CT) packaging. CFR-25JB-52-4R3 is available in Bulk packaging. Packaging selection should align with production volume and assembly process requirements.