Ohmite 40J180 180 Ohm 10W Axial Wirewound Resistor - Equivalent & Substitute Parts

Part Overview

The Ohmite 40J180 is a 180 Ohm, 10W axial wirewound resistor from the Ohmicone® 40 series, designed for through-hole applications requiring precision power dissipation. This component is currently active in production with 705 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity when the primary part number becomes unavailable or when alternative packaging configurations are required.

Substiute Parts

40J180

OhmiteIn Stock: 80640J180 Datasheet

Current PartRFQ

40J180E

OhmiteIn Stock: 112040J180E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Ohmite 40J180 is determined by strict equivalence across the following critical parameters:

• Resistance value: 180 Ohms
• Tolerance: ±5%
• Power rating: 10W
• Composition: Wirewound
• Package configuration: Axial through-hole
• Temperature coefficient: ±20ppm/°C
• Physical dimensions: 0.406" Dia x 1.902" L

The substitute part 40J180E meets all electrical and mechanical specifications required for direct substitution. The primary distinction between these parts is packaging configuration (bulk versus standard) and RoHS compliance status, neither of which affects functional equivalence in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 40J180 and 40J180E are active production components from Ohmite's Ohmicone® 40 series and are electrically and mechanically identical. Selection between these parts should be based on the following criteria:

40J180: Select this part number when standard packaging is required and RoHS non-compliant components are acceptable for the application.

40J180E: Select this part number when ROHS3 compliance is mandated by design specifications, regulatory requirements, or customer procurement standards. This variant is available in bulk packaging, which may provide cost advantages for high-volume orders.

Both parts carry identical electrical performance characteristics and are suitable for direct substitution in through-hole circuit designs requiring 180 Ohm, 10W wirewound resistors with ±5% tolerance.

Frequently Asked Questions (FAQ)

Q: Can 40J180E be used as a direct replacement for 40J180?

A: Yes. The 40J180E is a parametric equivalent with identical electrical specifications (180 Ohms, ±5%, 10W, ±20ppm/°C) and physical dimensions (0.406" Dia x 1.902" L). The only differences are packaging configuration and RoHS compliance status, which do not affect circuit functionality.

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

A: Packaging refers to the quantity and presentation format for procurement. Standard packaging (40J180) and bulk packaging (40J180E) contain the same component but may differ in minimum order quantities and unit pricing. Functionally, there is no difference.

Q: Does RoHS compliance affect component performance?

A: No. RoHS compliance relates to material composition and environmental regulations, not electrical or thermal performance. Both the RoHS non-compliant 40J180 and ROHS3 compliant 40J180E deliver identical performance in circuit applications.

Q: Are these parts suitable for high-temperature applications?

A: Both parts operate with a temperature coefficient of ±20ppm/°C. Specific operating temperature limits are not provided in the component specifications. Verify thermal requirements against your application's maximum ambient and component junction temperatures.

Q: Can I mix 40J180 and 40J180E parts in the same production run?

A: Yes, provided your design and regulatory requirements do not mandate uniform RoHS compliance across all components. Both parts are electrically and mechanically equivalent and will perform identically in circuit.