RNF1FTD1M00 Equivalent & Substitute Parts

Part Overview

The RNF1FTD1M00 is a 1 MOhms ±1% 1W through-hole resistor manufactured by Stackpole Electronics Inc. This axial metal film resistor features flame retardant coating and safety construction, designed for applications requiring precision resistance in the megohm range with 1W power dissipation capability. The part is currently active in production with 1038 units in stock. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and compliance certifications align with the original component requirements.

Substiute Parts

RNF1FTD1M00

Stackpole Electronics IncIn Stock: 1085RNF1FTD1M00 Datasheet

Current PartRFQ

CMF601M0000FKEB

Vishay DaleIn Stock: 12231CMF601M0000FKEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF1FTD1M00 is determined by the following critical parameters:

• Resistance value: 1 MOhms
• Tolerance: ±1%
• Power rating: 1W
• Composition: Metal Film
• Package configuration: Axial through-hole
• Temperature coefficient: ±100ppm/°C
• RoHS compliance: ROHS3 Compliant

The CMF601M0000FKEB from Vishay Dale meets all substitution criteria. Both parts share identical electrical specifications (resistance, tolerance, power rating, temperature coefficient) and mechanical form factor (axial package). Both are ROHS3 compliant and rated for the same operating temperature coefficient. The CMF601M0000FKEB operates across an extended temperature range (-55°C ~ 175°C) compared to the RNF1FTD1M00 (-55°C ~ 155°C), providing additional thermal margin in high-temperature applications.

Parameter Comparison

Engineering Selection Recommendations

The CMF601M0000FKEB qualifies as a direct electrical substitute for the RNF1FTD1M00 based on matching resistance, tolerance, power rating, temperature coefficient, and RoHS3 compliance. Both parts are active products with established supply availability.

The CMF601M0000FKEB offers two additional advantages: an extended operating temperature range to 175°C (versus 155°C for the RNF1FTD1M00) and moisture-resistant construction. The CMF601M0000FKEB is also physically smaller, which may provide layout benefits in space-constrained applications.

Packaging format differs between the two parts: the RNF1FTD1M00 is supplied in Tape & Reel format, while the CMF601M0000FKEB is supplied in Cut Tape format. This distinction affects procurement and assembly processes but does not impact electrical or mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can the CMF601M0000FKEB replace the RNF1FTD1M00 in existing designs?

A: Yes. Both parts share identical electrical specifications (1 MOhms, ±1%, 1W, ±100ppm/°C) and axial package configuration. The CMF601M0000FKEB is electrically and mechanically compatible for direct substitution.

Q: What is the difference in physical size between these parts?

A: The RNF1FTD1M00 measures 0.177" diameter × 0.433" length (4.50mm × 11.00mm). The CMF601M0000FKEB measures 0.145" diameter × 0.344" length (3.68mm × 8.74mm). The CMF is approximately 20% smaller in diameter and 20% shorter in length.

Q: Does the smaller size of the CMF601M0000FKEB affect thermal performance?

A: Both parts are rated for 1W power dissipation with identical temperature coefficients (±100ppm/°C). The CMF601M0000FKEB operates to 175°C maximum, providing a 20°C higher upper temperature limit than the RNF1FTD1M00.

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

A: Tape & Reel packaging supplies components on continuous tape wound on reels, suitable for high-volume automated assembly. Cut Tape packaging supplies components on tape segments, typically used for lower-volume orders or manual assembly. Both formats contain the same component; packaging format affects procurement and assembly logistics only.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the RNF1FTD1M00 and CMF601M0000FKEB are ROHS3 compliant.

Q: What does "moisture resistant" mean for the CMF601M0000FKEB?

A: Moisture-resistant construction reduces susceptibility to moisture absorption and degradation in humid environments. This feature is present in the CMF601M0000FKEB but not specified for the RNF1FTD1M00.