ERO-S2PHF1201 Equivalent & Substitute Parts

Part Overview

The ERO-S2PHF1201 is a 1.2 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 alternatives necessary for ongoing design support and procurement continuity. Substitute parts must maintain identical electrical specifications and mechanical compatibility to ensure direct replacement capability in existing circuit designs.

Substiute Parts

ERO-S2PHF1201

Panasonic Electronic ComponentsIn Stock: 876ERO-S2PHF1201 Datasheet

Current PartRFQ

RNMF14FTC1K20

Stackpole Electronics IncIn Stock: 44424RNMF14FTC1K20 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ERO-S2PHF1201 are qualified based on the following critical parameters:

• Resistance value: 1.2 kOhms (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 type: Axial (exact match required)
• Number of terminations: 2 (exact match required)

The RNMF14FTC1K20 from Stackpole Electronics Inc meets all mandatory electrical and mechanical parameters for direct substitution. Minor dimensional variations within the axial package specification are acceptable provided the component maintains the same electrical performance and physical footprint compatibility.

Parameter Comparison

Engineering Selection Recommendations

The RNMF14FTC1K20 is the qualified substitute for the obsolete ERO-S2PHF1201. Selection is based on:

• Electrical parameter equivalence across all critical specifications
• Active product status ensuring ongoing availability and supply chain continuity
• ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements
• Identical ECCN and HTSUS classifications for trade compliance
• Axial package compatibility with existing PCB layouts, with dimensional variations within acceptable mechanical tolerances

The substitute component includes flame retardant coating and safety features not present in the original part, providing enhanced material properties without affecting electrical performance or circuit functionality.

Frequently Asked Questions (FAQ)

Q: Can the RNMF14FTC1K20 be used as a direct replacement for the ERO-S2PHF1201?

A: Yes. Both components share identical electrical specifications: 1.2 kOhms resistance, ±1% tolerance, 0.25W power rating, metal film composition, and ±50ppm/°C temperature coefficient. Both use axial packaging with two terminations, enabling direct substitution in circuit designs.

Q: Are there dimensional differences between these parts?

A: Minor dimensional variations exist. The ERO-S2PHF1201 measures 0.067" diameter x 0.126" length, while the RNMF14FTC1K20 measures 0.070" diameter x 0.130" length. These differences remain within axial package tolerances and do not affect PCB layout compatibility or electrical performance.

Q: What is the operating temperature difference?

A: The ERO-S2PHF1201 operates from -55°C to 150°C, while the RNMF14FTC1K20 operates from -55°C to 155°C. The substitute part provides a 5°C extended upper temperature range, maintaining full performance across the original part's operating envelope.

Q: Does the substitute part meet current regulatory requirements?

A: Yes. The RNMF14FTC1K20 is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards. The original ERO-S2PHF1201 regulatory status was not specified in available documentation.

Q: What additional features does the substitute part include?

A: The RNMF14FTC1K20 includes flame retardant coating and safety features. These enhancements do not alter electrical characteristics and provide improved material properties for enhanced reliability.

Q: Are both parts classified under the same trade categories?

A: Yes. Both components share identical ECCN (EAR99) and HTSUS (8533.21.0090) classifications, ensuring consistent trade compliance and export control treatment.