RNF12FTC4K02 Equivalent & Substitute Parts

Part Overview

The RNF12FTC4K02 is a 4.02 kOhms ±1% metal film axial through-hole resistor rated at 0.5W (1/2W) manufactured by Stackpole Electronics Inc. This component features flame retardant coating and safety-grade construction, designed for applications requiring precision resistance values with reliable performance across industrial temperature ranges. The part maintains Active product status with 839 units in current inventory. Substitute parts are identified to address supply chain continuity, packaging format preferences, or specific application requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

RNF12FTC4K02

Stackpole Electronics IncIn Stock: 895RNF12FTC4K02 Datasheet

Current PartRFQ

CMF554K0200FHEB

Vishay DaleIn Stock: 2545CMF554K0200FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF12FTC4K02 is determined by the following critical parameters:

• Resistance value: 4.02 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.5W / 1/2W (exact match required)
• Composition: Metal Film (exact match required)
• Package: Axial through-hole (exact match required)
• Temperature coefficient: ±50ppm/°C (exact match required)
• Regulatory compliance: ROHS3 Compliant (minimum requirement)

The CMF554K0200FHEB from Vishay Dale meets all substitution criteria. Both parts share identical electrical specifications and axial package geometry, with compatible operating temperature ranges and regulatory certifications. Dimensional variations exist due to different manufacturing tolerances, but both conform to standard axial resistor form factors suitable for PCB mounting.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF12FTC4K02 and CMF554K0200FHEB are Active status components with ROHS3 compliance and REACH Unaffected certification, meeting current regulatory requirements for industrial and commercial applications. The CMF554K0200FHEB provides an extended operating temperature range to 175°C and includes moisture-resistant properties, offering enhanced environmental protection. The primary distinction lies in packaging format (Tape & Reel versus Cut Tape) and physical dimensions. Selection between these parts should be based on supply availability, packaging requirements for assembly processes, and PCB layout constraints related to component body dimensions.

Frequently Asked Questions (FAQ)

Q: Can the CMF554K0200FHEB replace the RNF12FTC4K02 in existing designs?

A: Yes. Both parts share identical electrical specifications (4.02 kOhms ±1%, 0.5W, ±50ppm/°C) and axial package configuration. The CMF554K0200FHEB has a smaller physical body (0.090" diameter vs. 0.108"), which may require PCB layout verification for tight spacing applications but generally provides improved board density.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging supplies components on continuous carrier tape wound on reels, suitable for high-volume automated assembly. Cut Tape (CT) packaging provides components on tape segments, typically used for lower-volume orders or manual assembly processes. Both formats contain identical components.

Q: Are there temperature range differences that affect substitution?

A: The CMF554K0200FHEB operates to 175°C versus the RNF12FTC4K02 at 155°C. For applications within the RNF12FTC4K02 temperature specification (-55°C to 155°C), both parts are functionally equivalent. Applications requiring operation above 155°C should use the CMF554K0200FHEB.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both components are ROHS3 Compliant and REACH Unaffected, meeting current environmental and safety regulations for industrial component use.

Q: What does "Moisture Resistant" mean for the CMF554K0200FHEB?

A: Moisture resistance indicates enhanced protection against humidity ingress and corrosion in high-humidity or marine environments. This feature provides additional reliability in applications exposed to condensation or salt spray conditions.