Ohmite 41F350 Equivalent & Substitute Parts

Part Overview

The Ohmite 41F350 is a 350 Ohm ±1% 1W through-hole axial wirewound resistor from the Ohmicone® 40 series. This component is designed for applications requiring precision resistance with moderate power dissipation in a compact axial package. The part maintains active product status with 661 units in current inventory. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are required due to supply constraints, design flexibility, or application-specific performance needs.

Substiute Parts

41F350

OhmiteIn Stock: 75641F350 Datasheet

Current PartRFQ

ALSR01350R0FE12

Vishay DaleIn Stock: 1083ALSR01350R0FE12 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Ohmite 41F350 is determined by the following critical parameters:

• Resistance value: 350 Ohms (exact match required)
• Tolerance: ±1% (equal or tighter tolerance acceptable)
• Power rating: 1W (equal or higher acceptable)
• Composition: Wirewound (maintains electrical characteristics)
• Package: Axial (mechanical and electrical compatibility)
• Termination count: 2 (pin compatibility)

The Vishay Dale ALSR01350R0FE12 meets all substitution criteria. Both parts are wirewound axial resistors with identical resistance and tolerance specifications, equivalent power ratings, and compatible two-terminal axial packages suitable for through-hole PCB mounting.

Parameter Comparison

Engineering Selection Recommendations

Both the Ohmite 41F350 and Vishay Dale ALSR01350R0FE12 are active products suitable for direct substitution based on electrical equivalence. The Vishay Dale ALSR01350R0FE12 offers ROHS3 compliance, whereas the Ohmite 41F350 is RoHS non-compliant. Selection between these parts should be based on regulatory requirements and environmental compliance mandates applicable to the end application. The Vishay Dale part provides a defined operating temperature range of -65°C to 250°C and includes moisture-resistant construction. The Ohmite part features a tighter temperature coefficient of ±20ppm/°C compared to the Vishay Dale specification of ±30ppm/°C. Physical dimensions differ slightly, with the Vishay Dale part being marginally smaller in both diameter and length, which may be advantageous in space-constrained layouts.

Frequently Asked Questions (FAQ)

Q: Can the Vishay Dale ALSR01350R0FE12 be used as a direct replacement for the Ohmite 41F350?

A: Yes. Both parts share identical resistance (350 Ohms), tolerance (±1%), power rating (1W), composition (wirewound), and axial package configuration. Electrical performance is equivalent for standard circuit applications.

Q: What is the significance of the temperature coefficient difference?

A: The Ohmite 41F350 has a temperature coefficient of ±20ppm/°C, while the Vishay Dale ALSR01350R0FE12 is ±30ppm/°C. This means the Ohmite part exhibits slightly less resistance variation across temperature extremes. For applications with stringent temperature stability requirements, the Ohmite part may be preferred.

Q: Are there physical compatibility concerns due to size differences?

A: The Vishay Dale part is slightly smaller (0.110" Dia x 0.406" L versus 0.126" Dia x 0.437" L). Both are axial packages suitable for through-hole mounting. The smaller Vishay Dale dimensions may provide layout advantages in compact designs but do not affect electrical compatibility.

Q: What is the impact of RoHS compliance status?

A: The Vishay Dale ALSR01350R0FE12 is ROHS3 compliant, while the Ohmite 41F350 is RoHS non-compliant. For applications subject to RoHS regulations or customer requirements, the Vishay Dale part is the appropriate selection.

Q: Does the moisture-resistant feature of the Vishay Dale part affect substitution?

A: The Vishay Dale ALSR01350R0FE12 includes moisture-resistant construction with MSL rating of 1 (Unlimited). This is an additional feature that does not compromise compatibility but may provide enhanced reliability in humid or moisture-prone environments.