PRNF14FTD38K3 Equivalent & Substitute Parts

Part Overview

The PRNF14FTD38K3 is a 38.3 kOhms ±1% metal film through-hole resistor rated at 0.25W (1/4W) in axial configuration, manufactured by Stackpole Electronics Inc. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the allowed parameter range for this resistor category.

Substiute Parts

PRNF14FTD38K3

Stackpole Electronics IncIn Stock: 900PRNF14FTD38K3 Datasheet

Current PartRFQ

RNF14FTD38K3

Stackpole Electronics IncIn Stock: 24565RNF14FTD38K3 Datasheet

DirectRFQ

CMF5538K300FHEB

Vishay DaleIn Stock: 3477CMF5538K300FHEB Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PRNF14FTD38K3 are qualified based on the following criteria:

Direct Equivalent (Same Packaging Format): RNF14FTD38K3 maintains identical electrical specifications and axial package configuration. This part differs only in packaging format (Cut Tape vs. Tape & Reel) and represents the same component from the same manufacturer series.

Upgrade Substitute (Enhanced Specifications): CMF5538K300FHEB from Vishay Dale qualifies as a substitute through parameter allowance. While power rating increases from 0.25W to 0.5W and temperature coefficient improves from ±100ppm/°C to ±50ppm/°C, the critical parameters remain within acceptable substitution boundaries: resistance value (38.3 kOhms), tolerance (±1%), composition (metal film), and axial package configuration are identical. The operating temperature range extends from -55°C ~ 155°C to -55°C ~ 175°C, providing enhanced thermal capability.

Parameter Comparison

Engineering Selection Recommendations

RNF14FTD38K3 is the direct equivalent for applications requiring identical specifications and performance characteristics. Selection is appropriate when packaging format (Cut Tape) is compatible with assembly processes and when inventory availability from Stackpole Electronics Inc meets procurement requirements.

CMF5538K300FHEB is suitable for applications where enhanced thermal performance or extended operating temperature range (-55°C ~ 175°C vs. -55°C ~ 155°C) provides design margin. The increased power rating (0.5W vs. 0.25W) and improved temperature coefficient (±50ppm/°C vs. ±100ppm/°C) represent performance upgrades. Both parts maintain RoHS3 compliance and identical electrical core specifications (38.3 kOhms ±1%).

All substitute parts are Active product status and maintain compliance certifications equivalent to the main part number.

Frequently Asked Questions (FAQ)

Q: Can RNF14FTD38K3 be used as a direct replacement for PRNF14FTD38K3?

A: Yes. Both parts are identical in electrical specifications and axial package configuration. The difference is packaging format: PRNF14FTD38K3 is supplied in Tape & Reel format while RNF14FTD38K3 is supplied in Cut Tape format. Compatibility depends on assembly equipment requirements.

Q: What are the advantages of using CMF5538K300FHEB over the original part?

A: CMF5538K300FHEB provides three enhancements: power rating increases from 0.25W to 0.5W, temperature coefficient improves from ±100ppm/°C to ±50ppm/°C, and operating temperature range extends to 175°C maximum. Resistance value, tolerance, and package type remain identical.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. PRNF14FTD38K3, RNF14FTD38K3, and CMF5538K300FHEB are all RoHS3 compliant.

Q: Can CMF5538K300FHEB be used in applications designed for 0.25W power rating?

A: Yes. The higher power rating (0.5W) is a non-limiting upgrade. Applications designed for 0.25W operation will function correctly with a 0.5W rated component.

Q: What is the physical size difference between substitute parts?

A: PRNF14FTD38K3 and RNF14FTD38K3 are 0.093" diameter × 0.250" length. CMF5538K300FHEB is 0.090" diameter × 0.240" length. Both axial configurations are mechanically compatible in standard through-hole applications.