Ohmite 40F13K Equivalent & Substitute Parts

Part Overview

The Ohmite 40F13K is a 13 kOhms ±1% 10W through-hole resistor with axial wirewound construction, part of the Ohmicone® 40 series. This component is currently active in production with 745 units in stock. Finding equivalent and substitute parts is necessary to ensure supply chain flexibility, accommodate packaging preferences, and meet specific compliance requirements for different applications and procurement channels.

Substiute Parts

40F13K

OhmiteIn Stock: 76640F13K Datasheet

Current PartRFQ

40F13KE

OhmiteIn Stock: 91440F13KE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 40F13K is determined by strict parametric matching across all critical electrical and mechanical specifications. The following parameters must remain identical for a part to qualify as a direct substitute:

• Resistance value: 13 kOhms
• 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)
• Termination count: 2

The 40F13KE meets all these criteria and qualifies as a parametric equivalent. The primary distinction between these parts is packaging format and compliance certification status, not electrical or mechanical performance.

Parameter Comparison

Engineering Selection Recommendations

Both the 40F13K and 40F13KE are electrically and mechanically identical Ohmicone® 40 series resistors with active product status. Selection between these parts should be based on the following criteria:

40F13K is appropriate for applications where RoHS non-compliant components are acceptable or required by specification.

40F13KE is the preferred choice for applications requiring ROHS3 compliance certification. This variant is supplied in bulk packaging format and offers higher current inventory availability (844 units versus 745 units).

Both parts carry identical ECCN (EAR99) and HTSUS (8533.21.0080) classifications, ensuring equivalent regulatory treatment for export and tariff purposes.

Frequently Asked Questions (FAQ)

Q: Can 40F13KE be used as a direct replacement for 40F13K in all applications?

A: Yes, from an electrical and mechanical standpoint. The 40F13KE is parametrically identical to the 40F13K. The only differences are packaging format (bulk versus standard) and RoHS compliance status. If your application or procurement specification does not mandate RoHS non-compliance, the 40F13KE is a direct substitute.

Q: What is the difference between the standard packaging and bulk packaging?

A: The electrical and mechanical specifications are identical. Bulk packaging typically refers to alternative packaging formats used for high-volume procurement. The choice between standard and bulk packaging is a procurement and logistics consideration, not a technical one.

Q: Are there any dimensional or thermal differences between these parts?

A: No. Both parts share identical physical dimensions (0.406" Dia x 1.902" L / 10.30mm x 48.30mm) and identical temperature coefficient specifications (±20ppm/°C). They are mechanically and thermally interchangeable.

Q: Why would I choose 40F13K over 40F13KE if they are identical?

A: The 40F13K should be selected only if your application or procurement specification explicitly requires a RoHS non-compliant component. Otherwise, the 40F13KE is the preferred option due to ROHS3 compliance and higher inventory availability.

Q: Do these parts have the same ECCN and HTSUS classifications?

A: Yes. Both parts are classified under ECCN EAR99 and HTSUS 8533.21.0080, ensuring identical regulatory and tariff treatment.