Equivalent & Substitute Parts for ERO-S2PHF1203

Part Overview

The ERO-S2PHF1203 is a 120 kOhms ±1% 0.25W through-hole resistor with axial metal film construction manufactured by Panasonic Electronic Components. This component is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system support and procurement continuity. The axial metal film construction provides stable resistance characteristics suitable for precision analog and signal conditioning applications.

Substiute Parts

ERO-S2PHF1203

Panasonic Electronic ComponentsIn Stock: 1126ERO-S2PHF1203 Datasheet

Current PartRFQ

RNMF14FTC120K

Stackpole Electronics IncIn Stock: 12715RNMF14FTC120K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ERO-S2PHF1203 is based on matching the following critical electrical and mechanical parameters:

• Resistance value: 120 kOhms
• Tolerance: ±1%
• Power rating: 0.25W (1/4W)
• Composition: Metal Film
• Package: Axial through-hole
• Temperature coefficient: ±50ppm/°C
• Operating temperature range: minimum -55°C to 150°C

The RNMF14FTC120K from Stackpole Electronics Inc meets all these core substitution criteria. Both components share identical electrical specifications and axial package geometry, enabling direct functional replacement in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

The RNMF14FTC120K is the qualified substitute for the obsolete ERO-S2PHF1203. Selection is based on the following factors:

• Electrical equivalence: Both components provide identical resistance, tolerance, power rating, and temperature coefficient specifications.
• Active product status: The RNMF14FTC120K is currently in active production with 12,612 units in stock, ensuring procurement availability.
• Regulatory compliance: The RNMF14FTC120K carries ROHS3 compliance certification, meeting current environmental standards.
• Physical compatibility: Axial package geometry and lead termination count are identical. Dimensional variance (0.070" vs 0.067" diameter; 0.130" vs 0.126" length) is within standard PCB layout tolerances for through-hole axial components.
• Export classification: Both components share identical ECCN (EAR99) and HTSUS (8533.21.0090) classifications.

Frequently Asked Questions (FAQ)

Q: Can the RNMF14FTC120K be used as a direct replacement for the ERO-S2PHF1203?

A: Yes. Both components meet identical electrical specifications (120 kOhms ±1%, 0.25W, ±50ppm/°C) and share axial through-hole package construction. The slight dimensional difference (0.003" diameter and 0.004" length variance) is within standard PCB design tolerances for axial component placement.

Q: What is the difference between the ERO-S2PHF1203 and RNMF14FTC120K?

A: The primary differences are manufacturer (Panasonic vs Stackpole), product status (obsolete vs active), and additional features on the Stackpole part (flame retardant coating, ROHS3 compliance). Electrical and mechanical performance are equivalent.

Q: Are there any temperature range limitations when substituting?

A: The RNMF14FTC120K has a slightly extended upper operating temperature limit (155°C vs 150°C). This provides additional thermal margin and does not restrict substitution in applications designed for the original part's -55°C to 150°C range.

Q: Does the flame retardant coating on the RNMF14FTC120K affect circuit performance?

A: No. The flame retardant coating is a safety feature applied to the component body and does not alter electrical characteristics, resistance stability, or temperature coefficient performance.

Q: What packaging format is the RNMF14FTC120K supplied in?

A: The RNMF14FTC120K is supplied in Cut Tape (CT) packaging, suitable for both manual and automated assembly processes.