Equivalent & Substitute Parts for Ohmite 40F1R0

Part Overview

The Ohmite 40F1R0 is a 1 Ohm ±1% 10W axial wirewound through-hole resistor from the Ohmicone® 40 series. This component is classified as Active product status with 1093 pieces currently in stock. Equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, and support alternative packaging or compliance requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

40F1R0

OhmiteIn Stock: 115340F1R0 Datasheet

Current PartRFQ

40F1R0E

OhmiteIn Stock: 73840F1R0E Datasheet

Parametric EquivalentRFQ

RS0101R000FS73

Vishay DaleIn Stock: 1420RS0101R000FS73 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 40F1R0 are qualified based on matching the following critical parameters: resistance value (1 Ohms), tolerance (±1%), power rating (10W), composition (wirewound), package type (axial), and temperature coefficient (±50ppm/°C). All identified substitutes maintain identical electrical specifications and axial through-hole form factor, ensuring direct functional equivalence in circuit applications.

The substitute parts are categorized as follows:

Parametric Equivalent: 40F1R0E (Ohmite) — identical electrical and mechanical specifications with alternative packaging (Bulk vs. standard packaging).

Manufacturer Recommended Equivalent: RS0101R000FS73 (Vishay Dale) — meets all core electrical parameters with moisture-resistant composition and extended operating temperature range, supplied in Tape & Reel packaging.

Parameter Comparison

Engineering Selection Recommendations

40F1R0E (Ohmite): Select this substitute when ROHS3 compliance is required. This part maintains identical dimensions and electrical characteristics to the primary 40F1R0, with the distinction of RoHS3 compliance status. Bulk packaging may be suitable for high-volume production environments.

RS0101R000FS73 (Vishay Dale): Select this substitute when moisture-resistant composition and extended operating temperature range (-65°C ~ 250°C) are design requirements. Dimensional variation (0.375" Dia x 1.780" L versus 0.406" Dia x 1.902" L) must be evaluated for PCB layout compatibility. Tape & Reel packaging supports automated assembly processes. Note that this part maintains RoHS non-compliant status consistent with the primary part.

All three parts share identical electrical specifications (1 Ohm ±1%, 10W, ±50ppm/°C) and axial through-hole configuration, confirming functional interchangeability in circuit design.

Frequently Asked Questions (FAQ)

Q: Can 40F1R0E be used as a direct replacement for 40F1R0?

A: Yes. The 40F1R0E is a parametric equivalent with identical resistance, tolerance, power rating, temperature coefficient, and physical dimensions. The primary difference is RoHS3 compliance status and packaging format (Bulk). No circuit redesign is required.

Q: What are the dimensional differences between 40F1R0 and RS0101R000FS73?

A: The 40F1R0 measures 0.406" Dia x 1.902" L (10.30mm x 48.30mm), while the RS0101R000FS73 measures 0.375" Dia x 1.780" L (9.53mm x 45.21mm). The Vishay Dale part is slightly smaller in both diameter and length. PCB layout and mechanical clearance must be verified before substitution.

Q: When should RS0101R000FS73 be selected over 40F1R0?

A: Select RS0101R000FS73 when moisture-resistant composition is required or when the extended operating temperature range (-65°C ~ 250°C) is necessary for the application. The Tape & Reel packaging also supports high-volume automated assembly.

Q: Are all three parts electrically identical?

A: Yes. All three parts share identical electrical specifications: 1 Ohm resistance, ±1% tolerance, 10W power rating, ±50ppm/°C temperature coefficient, and wirewound composition. Functional equivalence is confirmed for circuit applications.

Q: What packaging options are available?

A: 40F1R0 is supplied in standard packaging, 40F1R0E in Bulk packaging, and RS0101R000FS73 in Tape & Reel (TR) format. Packaging selection depends on production volume and assembly process requirements.

Q: Do compliance requirements differ between these parts?

A: Yes. The 40F1R0E is ROHS3 compliant, while both 40F1R0 and RS0101R000FS73 are RoHS non-compliant. Design compliance requirements should determine part selection when regulatory standards apply.