Equivalent & Substitute Parts for ERO-S2PHF7503

Part Overview

The ERO-S2PHF7503 is a 750 kOhms ±1% 0.25W (1/4W) 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, maintenance, and production continuity. Substitute parts must maintain identical electrical specifications and compatible physical dimensions to ensure direct replacement capability in existing circuit designs.

Substiute Parts

ERO-S2PHF7503

Panasonic Electronic ComponentsIn Stock: 1794ERO-S2PHF7503 Datasheet

Current PartRFQ

RNMF14FTC750K

Stackpole Electronics IncIn Stock: 9629RNMF14FTC750K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERO-S2PHF7503 is determined by strict equivalence across the following parameters:

• Resistance Value: 750 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 RNMF14FTC750K from Stackpole Electronics Inc meets all mandatory substitution criteria. Both components share identical electrical specifications and compatible axial package dimensions within acceptable manufacturing tolerances.

Parameter Comparison

Engineering Selection Recommendations

The RNMF14FTC750K is a direct functional equivalent to the ERO-S2PHF7503. Selection of this substitute is supported by:

• Electrical Equivalence: Identical resistance, tolerance, power rating, temperature coefficient, and operating temperature range specifications ensure circuit performance parity.
• Physical Compatibility: Axial package dimensions are within acceptable manufacturing tolerances for standard PCB through-hole mounting.
• Product Availability: The RNMF14FTC750K maintains active production status with confirmed inventory availability, addressing the obsolescence of the original component.
• Regulatory Compliance: ROHS3 compliance of the substitute part provides enhanced environmental and regulatory alignment for new designs and production batches.
• Thermal Performance: The extended upper operating temperature limit of 155°C (versus 150°C) provides additional thermal margin in demanding applications.

Frequently Asked Questions (FAQ)

Q: Can the RNMF14FTC750K be used as a direct replacement for the ERO-S2PHF7503 in existing designs?

A: Yes. Both components share identical electrical specifications (750 kOhms ±1%, 0.25W, ±50ppm/°C) and compatible axial package dimensions. Direct substitution is supported without circuit redesign.

Q: What is the significance of the dimensional difference between the two parts?

A: The RNMF14FTC750K has slightly larger dimensions (0.070" Dia x 0.130" L versus 0.067" Dia x 0.126" L). These differences fall within standard manufacturing tolerances for axial resistors and do not affect PCB mounting compatibility or circuit performance.

Q: Why is the RNMF14FTC750K rated for 155°C maximum operating temperature while the ERO-S2PHF7503 is rated for 150°C?

A: The extended temperature rating reflects the design specifications of the Stackpole component. Both parts operate safely within the specified ranges. The RNMF14FTC750K provides additional thermal margin for applications operating near the upper temperature limit.

Q: Does the flame retardant coating on the RNMF14FTC750K affect electrical performance?

A: No. The flame retardant coating is a safety feature that does not alter the electrical characteristics of the metal film resistor. Resistance, tolerance, and temperature coefficient remain unchanged.

Q: Are there any compliance differences between the two parts?

A: The RNMF14FTC750K is ROHS3 compliant, while the ERO-S2PHF7503 compliance status is not specified. For new designs and production requiring regulatory compliance, the RNMF14FTC750K is the preferred selection.