RNF12FTC22R1 Equivalent & Substitute Parts

Part Overview

The RNF12FTC22R1 is a 22.1 Ohm ±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 with thermal stability across industrial temperature ranges. The part is currently in active production status with 976 units in stock. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and regulatory compliance can be maintained while accommodating different packaging formats or enhanced feature sets.

Substiute Parts

RNF12FTC22R1

Stackpole Electronics IncIn Stock: 1067RNF12FTC22R1 Datasheet

Current PartRFQ

CMF5522R100FHEB

Vishay DaleIn Stock: 2981CMF5522R100FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF12FTC22R1 is determined by the following critical parameters:

• Electrical Specifications: Resistance value (22.1 Ohms), tolerance (±1%), and power rating (0.5W) must be identical
• Composition & Construction: Metal film composition with flame retardant coating required
• Package Configuration: Axial through-hole package mandatory for mechanical compatibility
• Temperature Performance: Temperature coefficient (±50ppm/°C) and operating range must meet or exceed the original specification
• Regulatory Compliance: RoHS3 compliance and REACH unaffected status required

The CMF5522R100FHEB from Vishay Dale meets all substitution criteria while offering enhanced moisture resistance and an extended upper operating temperature limit of 175°C compared to the original 155°C specification.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF12FTC22R1 and CMF5522R100FHEB are active production components with full RoHS3 compliance and REACH unaffected status. Selection between these parts depends on application-specific requirements:

The RNF12FTC22R1 is appropriate for applications where tape and reel packaging is required for automated assembly processes and where the standard operating temperature range of -55°C to 155°C is sufficient.

The CMF5522R100FHEB is suitable for applications requiring extended thermal performance up to 175°C, moisture-resistant construction, or where cut tape packaging is acceptable. The smaller physical dimensions of the CMF5522R100FHEB may provide advantages in space-constrained designs while maintaining identical electrical performance.

Frequently Asked Questions (FAQ)

Q: Can the CMF5522R100FHEB replace the RNF12FTC22R1 in all applications?

A: Yes, provided the application does not require tape and reel packaging format. Both components share identical electrical specifications (22.1 Ohms ±1%, 0.5W, ±50ppm/°C) and regulatory compliance. The CMF5522R100FHEB offers additional moisture resistance and higher maximum operating temperature.

Q: What is the significance of the different physical dimensions?

A: The CMF5522R100FHEB is physically smaller (0.090" Dia x 0.240" L versus 0.108" Dia x 0.344" L). Both are axial through-hole components with identical lead spacing for PCB mounting. The smaller size may reduce board space requirements but does not affect electrical performance.

Q: Does the packaging format difference affect circuit performance?

A: No. Tape & Reel (TR) and Cut Tape (CT) are supply chain packaging formats only. They do not influence electrical characteristics or component functionality. Selection depends on assembly equipment compatibility and inventory management requirements.

Q: Are both parts suitable for high-reliability applications?

A: Both components feature flame retardant coating and safety-grade construction with RoHS3 compliance. The CMF5522R100FHEB provides enhanced moisture resistance, which may be beneficial in humid or corrosive environments.

Q: What is the temperature coefficient significance?

A: Both parts maintain ±50ppm/°C temperature coefficient, ensuring stable resistance values across temperature variations. This specification is critical for precision analog circuits and measurement applications.