Ohmite 91J180E Equivalent & Substitute Parts

Part Overview

The Ohmite 91J180E is a 180 Ohm, 1.5W wirewound axial resistor with ±5% tolerance, designed for through-hole applications requiring flame retardant coating and safety features. This component is currently in active production status with 1191 pieces available in inventory. 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 sourcing is required.

Substiute Parts

91J180E

OhmiteIn Stock: 121791J180E Datasheet

Current PartRFQ

91J18R

OhmiteIn Stock: 113391J18R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 91J180E are identified based on electrical and mechanical parameter equivalence. The primary substitution criteria are:

• Resistance value: 180 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Power rating: 1.5W (exact match required)
• Composition: Wirewound (exact match required)
• Package type: Axial (exact match required)
• Physical dimensions: 0.142" Dia x 0.453" L (exact match required)
• Temperature coefficient: ±30ppm/°C (exact match required)
• Features: Flame retardant coating and safety characteristics (exact match required)

The Ohmite 91J18R meets all electrical and mechanical parameters required for direct substitution with the 91J180E. Both parts are manufactured by Ohmite within the same 90 series product line and share identical specifications for resistance, tolerance, power rating, composition, package configuration, and thermal characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both the 91J180E and 91J18R are active production components manufactured by Ohmite. The 91J180E carries RoHS3 compliance certification, while the 91J18R is RoHS non-compliant. Selection between these parts should be based on regulatory and compliance requirements applicable to the end application. The 91J180E is the preferred choice for applications requiring RoHS3 compliance. The 91J18R serves as a functional equivalent for applications where RoHS compliance is not mandated. Both parts are electrically and mechanically interchangeable based on the provided specifications.

Frequently Asked Questions (FAQ)

Q: Can the 91J18R be used as a direct replacement for the 91J180E?

A: Yes, the 91J18R is electrically and mechanically equivalent to the 91J180E. Both parts share identical resistance, tolerance, power rating, composition, package type, dimensions, and thermal characteristics. Selection should be based on compliance requirements, as the 91J180E is RoHS3 compliant while the 91J18R is not.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both the 91J180E and 91J18R have identical dimensions of 0.142" Dia x 0.453" L (3.60mm x 11.50mm) and use the same axial package configuration, ensuring mechanical compatibility in PCB layouts and through-hole applications.

Q: What is the difference between the 91J180E and 91J18R?

A: The primary difference is regulatory compliance. The 91J180E is RoHS3 compliant, while the 91J18R is RoHS non-compliant. All electrical and mechanical specifications are identical.

Q: Which part should I specify for new designs?

A: For new designs, specify the 91J180E to ensure RoHS3 compliance unless your application explicitly does not require this certification. Both parts are in active production.

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

A: Both parts operate with a temperature coefficient of ±30ppm/°C. Verify that this thermal stability meets your specific operating temperature range requirements for your application.