RNF12FTC12K1 Equivalent & Substitute Parts

Part Overview

The RNF12FTC12K1 is a 12.1 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 high reliability. The part is currently in active production status with 1004 units in stock. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and compliance certifications align with the original component requirements.

Substiute Parts

RNF12FTC12K1

Stackpole Electronics IncIn Stock: 1083RNF12FTC12K1 Datasheet

Current PartRFQ

CMF5512K100FHEB

Vishay DaleIn Stock: 5220CMF5512K100FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF12FTC12K1 are qualified based on the following critical parameters:

• Resistance value: 12.1 kOhms (exact match required)
• Tolerance: ±1% (precision grade match)
• Power rating: 0.5W / 1/2W (electrical capability match)
• Composition: Metal film (material type match)
• Package: Axial through-hole (mechanical compatibility)
• Temperature coefficient: ±50ppm/°C (stability match)
• Compliance: ROHS3 and REACH status alignment

The CMF5512K100FHEB from Vishay Dale meets all substitution criteria with identical electrical specifications and equivalent mechanical form factor, differing only in physical dimensions and extended operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF12FTC12K1 and CMF5512K100FHEB are active production components with full ROHS3 compliance and REACH unaffected status, qualifying them for equivalent use in precision resistor applications. The CMF5512K100FHEB provides an extended operating temperature range to 175°C and includes moisture-resistant properties, offering enhanced environmental performance. Physical dimension differences must be evaluated for PCB layout compatibility, as the Vishay Dale substitute is smaller in both diameter and length. Selection between these parts depends on available inventory, packaging format requirements (Tape & Reel versus Cut Tape), and specific thermal environment demands.

Frequently Asked Questions (FAQ)

Q: Can the CMF5512K100FHEB replace the RNF12FTC12K1 in all applications?

A: Yes, provided PCB layout accommodates the smaller physical dimensions (0.090" Dia x 0.240" L versus 0.108" Dia x 0.344" L). All electrical specifications, tolerance, power rating, and compliance certifications are equivalent.

Q: What is the significance of the extended temperature range in the CMF5512K100FHEB?

A: The CMF5512K100FHEB operates to 175°C versus 155°C for the RNF12FTC12K1. This extended range provides additional margin for high-temperature applications but does not affect performance in standard operating conditions.

Q: Are there packaging differences between these parts?

A: Yes. The RNF12FTC12K1 is supplied in Tape & Reel (TR) format, while the CMF5512K100FHEB is supplied in Cut Tape (CT) format. Both are axial through-hole components suitable for manual or automated assembly.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the RNF12FTC12K1 and CMF5512K100FHEB are ROHS3 compliant and REACH unaffected, with identical ECCN (EAR99) and HTSUS (8533.21.0090) classifications.

Q: What does the moisture-resistant feature in the CMF5512K100FHEB provide?

A: Moisture-resistant construction enhances performance in humid or corrosive environments. The RNF12FTC12K1 includes flame retardant coating and safety features; the CMF5512K100FHEB adds moisture resistance to this feature set.