Ohmite 91J91RE Equivalent & Substitute Parts

Part Overview

The Ohmite 91J91RE is a 91 Ohm, 1.5W axial wirewound resistor with ±5% tolerance and flame retardant coating. This component is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or when design flexibility permits selection from qualified alternatives meeting identical electrical and mechanical specifications.

Substiute Parts

91J91RE

OhmiteIn Stock: 107691J91RE Datasheet

Current PartRFQ

91J91R

OhmiteIn Stock: 103591J91R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 91J91RE is determined by matching the following critical parameters: resistance value (91 Ohms), tolerance (±5%), power rating (1.5W), composition (Wirewound), package type (Axial), temperature coefficient (±30ppm/°C), and physical dimensions (0.142" Dia x 0.453" L). The identified substitute part 91J91R meets all electrical and mechanical specifications. Differences in RoHS compliance status and moisture sensitivity level do not affect functional equivalence but must be evaluated within the context of end-application requirements and regulatory constraints.

Parameter Comparison

Engineering Selection Recommendations

The 91J91RE is the primary selection for applications requiring RoHS3 compliance. The substitute part 91J91R provides electrical and mechanical equivalence but carries RoHS non-compliant status. Selection between these parts must be based on regulatory requirements of the end application. Both parts are Active status components from the same manufacturer and series, ensuring design continuity. The difference in moisture sensitivity level classification does not affect functional performance in standard operating environments but should be considered for applications with specific environmental exposure requirements.

Frequently Asked Questions (FAQ)

Q: Can 91J91R be used as a direct replacement for 91J91RE? A: Both parts are electrically and mechanically identical, sharing the same resistance value, tolerance, power rating, composition, package type, and physical dimensions. Selection depends on RoHS compliance requirements of the application.

Q: What is the difference between RoHS3 compliant and RoHS non-compliant status? A: RoHS3 compliance indicates the part meets Restriction of Hazardous Substances regulations. RoHS non-compliant status means the part does not meet these regulatory requirements. Applications subject to RoHS regulations must use the 91J91RE.

Q: Are the physical dimensions identical between these parts? A: Yes. Both parts measure 0.142" Dia x 0.453" L (3.60mm x 11.50mm) and use identical Axial packaging, ensuring mechanical compatibility in PCB layouts and through-hole applications.

Q: What does Moisture Sensitivity Level (MSL) indicate? A: MSL classification defines the maximum time a component can be exposed to moisture before soldering. The 91J91RE lists MSL as Not Applicable, while 91J91R is classified as MSL 1 (Unlimited). This difference does not affect performance in standard operating conditions.

Q: Are both parts from the same manufacturer? A: Yes. Both 91J91RE and 91J91R are manufactured by Ohmite and belong to the same 90 series product line.