ERO-S2PHF1200 Equivalent & Substitute Parts

Part Overview

The ERO-S2PHF1200 is a 120 Ohm ±1% metal film axial resistor rated at 0.25W (1/4W) for through-hole applications. Manufactured by Panasonic Electronic Components as part of the ERO series, this component is classified as obsolete. Due to its discontinued status, identifying functionally equivalent substitute parts is essential for ongoing design support, maintenance, and production continuity.

Substiute Parts

ERO-S2PHF1200

Panasonic Electronic ComponentsIn Stock: 1146ERO-S2PHF1200 Datasheet

Current PartRFQ

RNMF14FTC120R

Stackpole Electronics IncIn Stock: 96034RNMF14FTC120R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ERO-S2PHF1200 are identified based on strict electrical and mechanical parameter matching:

Primary Substitution Criteria:

• Resistance value: 120 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.25W / 1/4W (exact match required)
• Composition: Metal Film (exact match required)
• Temperature coefficient: ±50ppm/°C (exact match required)
• Package: Axial through-hole configuration (exact match required)
• Termination count: 2 (exact match required)

The RNMF14FTC120R from Stackpole Electronics Inc meets all primary electrical specifications and maintains mechanical compatibility within acceptable dimensional tolerances for axial resistor packages.

Parameter Comparison

Engineering Selection Recommendations

The RNMF14FTC120R is a direct functional equivalent for the obsolete ERO-S2PHF1200. Both components share identical electrical specifications: 120 Ohm resistance, ±1% tolerance, 0.25W power rating, metal film composition, and ±50ppm/°C temperature coefficient.

The substitute part offers the following advantages:

• Active product status ensures ongoing availability and supply chain continuity
• ROHS3 compliance and REACH unaffected status meet current regulatory requirements
• Extended operating temperature range to 155°C provides additional thermal margin
• Minimal dimensional variation (0.003" diameter and 0.004" length increase) maintains compatibility with standard through-hole PCB layouts and axial component footprints

The slight dimensional increase does not impact electrical performance or mechanical fit in standard axial resistor applications.

Frequently Asked Questions (FAQ)

Q: Can the RNMF14FTC120R be used as a direct replacement for the ERO-S2PHF1200?

A: Yes. Both components meet identical electrical specifications for resistance value, tolerance, power rating, temperature coefficient, and operating temperature range. Dimensional differences are within acceptable tolerances for axial through-hole applications.

Q: What is the significance of the flame retardant coating on the RNMF14FTC120R?

A: The flame retardant coating is a manufacturing feature of the Stackpole RNMF series. It does not affect electrical performance or substitution compatibility. This feature may provide additional safety benefits in certain applications.

Q: Are there any PCB layout considerations when substituting the RNMF14FTC120R for the ERO-S2PHF1200?

A: The dimensional increase (0.003" diameter, 0.004" length) is negligible for standard axial resistor footprints. No PCB layout modifications are required for direct substitution in through-hole designs.

Q: Does the ROHS3 compliance of the RNMF14FTC120R affect its electrical performance?

A: No. ROHS3 compliance is a regulatory and material composition requirement that does not alter electrical characteristics, performance, or substitution suitability.

Q: What is the difference between MSL 1 (Unlimited) and Not Applicable?

A: The ERO-S2PHF1200 specifies MSL 1, indicating unlimited moisture sensitivity protection. The RNMF14FTC120R lists MSL as Not Applicable, which is standard for metal film axial resistors as they are not moisture-sensitive components. This does not impact substitution compatibility.