Ohmite 40F820 Equivalent & Substitute Parts

Part Overview

The Ohmite 40F820 is an 820 Ohm ±1% 10W through-hole resistor with axial wirewound construction, part of the Ohmicone® 40 series. This component is designed for applications requiring precision resistance with high power dissipation capability. The part maintains active product status and is available in original stock inventory. Substitute parts are identified when the original specification becomes unavailable, when alternative packaging is required, or when compliance requirements necessitate alternative sourcing.

Substiute Parts

40F820

OhmiteIn Stock: 85240F820 Datasheet

Current PartRFQ

40F820E

OhmiteIn Stock: 88540F820E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Ohmite 40F820 is based on electrical and mechanical parameter equivalence. The substitute part must maintain identical specifications across the following critical parameters:

• Resistance value: 820 Ohms
• Tolerance: ±1%
• Power rating: 10W
• Composition: Wirewound
• Package configuration: Axial
• Temperature coefficient: ±20ppm/°C
• Physical dimensions: 0.406" Dia x 1.902" L (10.30mm x 48.30mm)
• Number of terminations: 2

The identified substitute part 40F820E meets all electrical and mechanical requirements for direct substitution. Packaging differences (bulk versus standard) do not affect functional compatibility in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 40F820 and 40F820E are active products from Ohmite with identical electrical and mechanical specifications. Selection between these parts is determined by regulatory and compliance requirements:

The 40F820 is RoHS non-compliant and suitable for applications without RoHS compliance mandates.

The 40F820E is ROHS3 compliant and required for applications subject to RoHS directives or customer specifications mandating RoHS compliance.

Both parts are equivalent for circuit functionality and performance. The choice between them depends solely on the compliance requirements of the end application or procurement specification.

Frequently Asked Questions (FAQ)

Q: Can the 40F820E replace the 40F820 in my circuit?

A: Yes. The 40F820E is electrically and mechanically equivalent to the 40F820. All critical parameters including resistance value, tolerance, power rating, composition, package type, and physical dimensions are identical. Substitution is direct.

Q: What is the difference between the 40F820 and 40F820E?

A: The primary difference is RoHS compliance status. The 40F820E is ROHS3 compliant, while the 40F820 is RoHS non-compliant. All other specifications are identical.

Q: Does packaging affect compatibility?

A: No. The 40F820 is supplied in standard packaging while the 40F820E is supplied in bulk packaging. This difference affects only procurement and handling; it does not affect circuit performance or physical installation.

Q: Which part should I specify for a new design?

A: Specify based on your application's compliance requirements. If RoHS compliance is required, specify the 40F820E. If RoHS compliance is not required, either part is acceptable.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.406" Dia x 1.902" L (10.30mm x 48.30mm) and use identical axial package configuration with two terminations.

Q: Can I use these parts interchangeably in existing inventory?

A: Yes, provided your application does not have specific RoHS compliance requirements that would restrict use of the non-compliant version. Verify your procurement and compliance specifications before substitution.