Ohmite 41F680 680 Ohm 1W Axial Wirewound Resistor - Equivalent & Substitute Parts

Part Overview

The Ohmite 41F680 is a 680 Ohm ±1% 1W through-hole resistor with axial wirewound construction, part of the Ohmicone® 40 series. This component is actively manufactured and maintained in production inventory. Equivalent and substitute parts are identified to support procurement flexibility, supply chain continuity, and application-specific requirements such as RoHS compliance or enhanced environmental specifications.

Substiute Parts

41F680

OhmiteIn Stock: 72441F680 Datasheet

Current PartRFQ

41F680E

OhmiteIn Stock: 72941F680E Datasheet

DirectRFQ

ALSR01680R0FE12

Vishay DaleIn Stock: 1166ALSR01680R0FE12 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Ohmite 41F680 is determined by the following core parameters:

• Resistance value: 680 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)

Substitute parts must maintain identical electrical specifications and physical form factor. Secondary parameters such as temperature coefficient, RoHS compliance status, and moisture resistance features may vary within acceptable engineering tolerances but do not disqualify substitution eligibility.

Parameter Comparison

Engineering Selection Recommendations

41F680E (Ohmite): Direct equivalent from the same manufacturer with identical electrical and physical specifications. Offers ROHS3 compliance, addressing regulatory requirements where the original 41F680 does not. Recommended for new designs or applications requiring RoHS certification.

ALSR01680R0FE12 (Vishay Dale): Cross-manufacturer substitute meeting all core electrical parameters. Provides ROHS3 compliance and moisture-resistant construction. Physical dimensions are slightly smaller (0.110" Dia x 0.406" L versus 0.126" Dia x 0.437" L), which may affect board layout compatibility. Temperature coefficient is ±30ppm/°C versus ±20ppm/°C on the original part. Suitable for applications where moisture resistance and RoHS compliance are required and board space permits the smaller form factor.

Frequently Asked Questions (FAQ)

Q: Can the 41F680E be used as a direct replacement for the 41F680?

A: Yes. The 41F680E is electrically and mechanically identical to the 41F680, with the primary difference being ROHS3 compliance status. Both parts share the same resistance value, tolerance, power rating, wirewound composition, axial package, and physical dimensions.

Q: Is the ALSR01680R0FE12 compatible with the original 41F680 in all applications?

A: The ALSR01680R0FE12 meets all core electrical specifications (680 Ohms ±1%, 1W, wirewound, axial). However, physical dimensions differ slightly. Verify that the smaller form factor (0.110" Dia x 0.406" L) accommodates your board layout. The ±30ppm/°C temperature coefficient is acceptable for most applications but should be confirmed if temperature stability is critical.

Q: What is the difference between the 41F680 and 41F680E packaging?

A: The 41F680 is supplied in standard packaging, while the 41F680E is supplied in bulk packaging. Electrical and physical specifications are identical.

Q: Does the ALSR01680R0FE12 moisture-resistant feature affect performance?

A: Moisture-resistant construction is an additional feature that does not degrade electrical performance. It provides enhanced reliability in humid or wet environments. This feature is beneficial and does not introduce compatibility issues.

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

A: Both 41F680E and ALSR01680R0FE12 are ROHS3 compliant. Select 41F680E for identical physical dimensions and temperature coefficient. Select ALSR01680R0FE12 if moisture resistance is required and the smaller form factor is acceptable for your layout.