ERO-S2PHF1803 Equivalent & Substitute Parts

Part Overview

The ERO-S2PHF1803 is a 180 kOhms ±1% 0.25W axial metal film through-hole resistor manufactured by Panasonic Electronic Components. This component is classified as obsolete, making substitute parts necessary for new designs, repairs, and ongoing production requirements. The ERO series represents a legacy product line, and equivalent alternatives from active manufacturers provide continuity for applications requiring identical electrical and mechanical specifications.

Substiute Parts

ERO-S2PHF1803

Panasonic Electronic ComponentsIn Stock: 1026ERO-S2PHF1803 Datasheet

Current PartRFQ

RNMF14FTC180K

Stackpole Electronics IncIn Stock: 15246RNMF14FTC180K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ERO-S2PHF1803 is determined by strict equivalence across the following critical parameters:

• Resistance Value: 180 kOhms (exact match required)
• Tolerance: ±1% (precision specification)
• Power Rating: 0.25W / 1/4W (electrical stress rating)
• Composition: Metal Film (performance and stability characteristics)
• Temperature Coefficient: ±50ppm/°C (frequency and temperature stability)
• Operating Temperature Range: Minimum -55°C ~ 150°C (environmental limits)
• Package Type: Axial (mechanical form factor and PCB compatibility)
• Termination Count: 2 (circuit connectivity requirement)

The RNMF14FTC180K from Stackpole Electronics Inc meets all substitution criteria. Minor dimensional variations (0.070" Dia x 0.130" L versus 0.067" Dia x 0.126" L) remain within acceptable tolerances for axial through-hole component placement and do not affect electrical performance or circuit functionality.

Parameter Comparison

Engineering Selection Recommendations

The RNMF14FTC180K is a direct functional equivalent for the ERO-S2PHF1803. Selection is based on the following engineering factors:

Product Status: The ERO-S2PHF1803 is obsolete, while the RNMF14FTC180K is active and in production. Active status ensures ongoing availability and supply chain continuity.

Electrical Equivalence: Both components share identical resistance value (180 kOhms), tolerance (±1%), power rating (0.25W), composition (metal film), and temperature coefficient (±50ppm/°C). These parameters determine circuit performance and are fully matched.

Compliance & Certifications: The RNMF14FTC180K carries RoHS3 compliance and REACH unaffected status, meeting modern regulatory requirements. Both components are classified under ECCN EAR99 and HTSUS 8533.21.0090.

Mechanical Compatibility: Axial package type and 2-termination configuration are identical. Dimensional differences (0.003" diameter and 0.004" length increase) fall within standard PCB layout tolerances for through-hole components and do not require design modification.

Operating Range: The RNMF14FTC180K extends the upper operating temperature to 155°C (versus 150°C), providing enhanced thermal margin in high-temperature applications.

Frequently Asked Questions (FAQ)

Q: Can the RNMF14FTC180K replace the ERO-S2PHF1803 in existing designs?

A: Yes. Both components are electrically and mechanically equivalent across all critical parameters: 180 kOhms resistance, ±1% tolerance, 0.25W power rating, metal film composition, ±50ppm/°C temperature coefficient, and axial package type. No circuit redesign is required.

Q: Are there dimensional concerns with the RNMF14FTC180K?

A: The RNMF14FTC180K is slightly larger (0.070" Dia x 0.130" L versus 0.067" Dia x 0.126" L). These differences are within standard manufacturing tolerances for axial through-hole resistors and do not affect PCB layout or component placement.

Q: What is the difference between the flame retardant coating on the RNMF14FTC180K?

A: The RNMF14FTC180K includes flame retardant coating and safety features as part of its design. This does not alter electrical performance and provides additional safety compliance for applications requiring enhanced fire resistance.

Q: Is the RNMF14FTC180K RoHS compliant?

A: Yes. The RNMF14FTC180K is RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic components.

Q: What is the inventory status of these parts?

A: The ERO-S2PHF1803 has 998 pieces in stock (obsolete status). The RNMF14FTC180K has 15,188 pieces in stock and is actively manufactured, ensuring reliable long-term availability.