ERO-S2PHF12R0 Equivalent & Substitute Parts

Part Overview

The ERO-S2PHF12R0 is a 12 Ohm ±1% metal film axial resistor rated at 0.25W (1/4W) for through-hole applications. Manufactured by Panasonic Electronic Components, this part operates across -55°C to 150°C with a temperature coefficient of ±50ppm/°C. The product is currently obsolete, making identification of functionally equivalent active alternatives essential for ongoing design support and procurement.

Substiute Parts

ERO-S2PHF12R0

Panasonic Electronic ComponentsIn Stock: 924ERO-S2PHF12R0 Datasheet

Current PartRFQ

RNMF14FTC12R0

Stackpole Electronics IncIn Stock: 21298RNMF14FTC12R0 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ERO-S2PHF12R0 is determined by strict equivalence across the following parameters:

• Resistance value: 12 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.25W / 1/4W (exact match required)
• Composition: Metal Film (exact match required)
• Package: Axial through-hole (exact match required)
• Temperature coefficient: ±50ppm/°C (exact match required)
• Operating temperature range: minimum -55°C, maximum ≥150°C

The RNMF14FTC12R0 from Stackpole Electronics Inc meets all substitution criteria. This part maintains identical electrical specifications while offering active product status and enhanced features including flame retardant coating.

Parameter Comparison

Engineering Selection Recommendations

The RNMF14FTC12R0 is the direct functional equivalent for the obsolete ERO-S2PHF12R0. Selection is based on:

• Identical electrical performance across all critical parameters (resistance, tolerance, power rating, temperature coefficient)
• Active product status ensuring long-term availability and supply chain continuity
• ROHS3 compliance and REACH unaffected status meeting current regulatory requirements
• Extended upper operating temperature limit (155°C vs. 150°C) providing additional thermal margin
• Flame retardant coating and safety features as standard characteristics
• Minimal physical dimension variance (0.070" vs. 0.067" diameter; 0.130" vs. 0.126" length) compatible with standard through-hole PCB layouts

Frequently Asked Questions (FAQ)

Q: Can the RNMF14FTC12R0 be used as a direct replacement for the ERO-S2PHF12R0?

A: Yes. Both parts share identical resistance (12 Ohms), tolerance (±1%), power rating (0.25W), composition (metal film), package type (axial), and temperature coefficient (±50ppm/°C). The substitute meets or exceeds all electrical and thermal specifications.

Q: Are there physical compatibility concerns with the slightly larger RNMF14FTC12R0 dimensions?

A: The dimensional difference is minimal (0.003" diameter increase, 0.004" length increase). Standard through-hole PCB designs accommodate this variance without modification. Verify clearance in space-constrained layouts.

Q: What is the significance of the flame retardant coating on the RNMF14FTC12R0?

A: The flame retardant coating and safety features are inherent to the Stackpole RNMF series design. These features do not affect electrical performance or substitution suitability; they represent enhanced safety characteristics of the active product line.

Q: Why is the ERO-S2PHF12R0 listed as obsolete?

A: Panasonic has discontinued this product line. The RNMF14FTC12R0 from Stackpole Electronics represents the current active equivalent, ensuring continued availability for new designs and legacy system support.

Q: Are there compliance differences between the two parts?

A: The RNMF14FTC12R0 carries ROHS3 compliance and REACH unaffected status. Both parts share the same ECCN (EAR99) and HTSUS classification. Verify compliance requirements for your specific application and region.