Ohmite 41F30R Equivalent & Substitute Parts

Part Overview

The Ohmite 41F30R is a 30 Ohm ±1% 1W through-hole resistor with axial wirewound construction, part of the Ohmicone® 40 series. This component is currently active in production with 793 pieces in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring 30 Ohm ±1% 1W axial wirewound resistors.

Substiute Parts

41F30R

OhmiteIn Stock: 86041F30R Datasheet

Current PartRFQ

41F30RE

OhmiteIn Stock: 82141F30RE Datasheet

DirectRFQ

ALSR0130R00FE12

Vishay DaleIn Stock: 1182ALSR0130R00FE12 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 41F30R are qualified based on the following electrical and mechanical parameters:

• Resistance value: 30 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 1W (exact match required)
• Composition: Wirewound (exact match required)
• Package: Axial through-hole (exact match required)
• Number of terminations: 2 (exact match required)

Parts meeting all these criteria are functionally equivalent for direct substitution in circuit applications. Secondary parameters such as temperature coefficient, physical dimensions, and compliance certifications may vary within acceptable engineering tolerances for the product category.

Parameter Comparison

Engineering Selection Recommendations

All three parts meet the core electrical specifications for 30 Ohm ±1% 1W axial wirewound resistor applications. Selection should be based on the following factors:

41F30R (Ohmite): Primary part with RoHS non-compliant status. Suitable for applications without RoHS requirements. Identical physical dimensions and temperature coefficient to 41F30RE.

41F30RE (Ohmite): Direct equivalent to 41F30R with ROHS3 compliance. Identical electrical specifications and physical dimensions. Recommended for applications requiring RoHS3 compliance. Same series (Ohmicone® 40) ensures design continuity.

ALSR0130R00FE12 (Vishay Dale): ROHS3 compliant alternative from different manufacturer. Meets all core electrical requirements. Smaller physical dimensions (0.110" Dia x 0.406" L versus 0.126" Dia x 0.437" L) and slightly higher temperature coefficient (±30ppm/°C versus ±20ppm/°C). Moisture-resistant construction. Suitable for space-constrained applications and environments requiring moisture resistance.

Frequently Asked Questions (FAQ)

Q: Can 41F30RE be used as a direct replacement for 41F30R?

A: Yes. Both parts are from the Ohmite Ohmicone® 40 series with identical electrical specifications (30 Ohms ±1%, 1W), temperature coefficient (±20ppm/°C), and physical dimensions (0.126" Dia x 0.437" L). The primary difference is RoHS compliance status. 41F30RE is ROHS3 compliant while 41F30R is not.

Q: Is ALSR0130R00FE12 compatible with 41F30R in all applications?

A: ALSR0130R00FE12 meets all core electrical requirements (30 Ohms ±1%, 1W, wirewound, axial). However, it has smaller physical dimensions and a higher temperature coefficient (±30ppm/°C versus ±20ppm/°C). Verify that board layout accommodates the smaller size and that the higher temperature coefficient is acceptable for your application's thermal performance requirements.

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

A: 41F30R and 41F30RE are identical: 0.126" Dia x 0.437" L (3.20mm x 11.10mm). ALSR0130R00FE12 is smaller: 0.110" Dia x 0.406" L (2.79mm x 10.31mm). Verify PCB footprint compatibility before substitution.

Q: Which part should I select for RoHS-compliant applications?

A: Both 41F30RE and ALSR0130R00FE12 are ROHS3 compliant. 41F30RE maintains identical specifications to the primary part. ALSR0130R00FE12 offers an alternative from Vishay Dale with moisture-resistant construction.

Q: What does "moisture resistant" mean for ALSR0130R00FE12?

A: The ALSR0130R00FE12 includes moisture-resistant construction as a feature. This provides enhanced protection in humid or moisture-prone environments. The Moisture Sensitivity Level (MSL) is rated 1 (Unlimited), indicating no moisture sensitivity restrictions.