Ohmite 91J33RE Equivalent & Substitute Parts

Part Overview

The Ohmite 91J33RE is a 33 Ohm, 1.5W axial wirewound resistor with flame retardant coating and safety features. This component is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified when inventory constraints, regional availability, or compliance requirements necessitate alternative sourcing while maintaining electrical and mechanical compatibility.

Substiute Parts

91J33RE

OhmiteIn Stock: 117291J33RE Datasheet

Current PartRFQ

91J33R

OhmiteIn Stock: 97291J33R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 91J33RE is determined by strict parametric matching across electrical and mechanical specifications. The following criteria establish direct equivalence:

• Resistance value: 33 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Power rating: 1.5W (exact match required)
• Composition: Wirewound (exact match required)
• Package: Axial (exact match required)
• Physical dimensions: 0.142" Dia x 0.453" L (exact match required)
• Temperature coefficient: ±30ppm/°C (exact match required)
• Termination count: 2 (exact match required)

The Ohmite 91J33R meets all parametric requirements for direct substitution with the 91J33RE.

Parameter Comparison

Engineering Selection Recommendations

The 91J33R is a parametric equivalent to the 91J33RE with identical electrical and mechanical specifications. Both components are manufactured by Ohmite, belong to the Series 90 family, and maintain Active product status.

Selection between these parts should be based on compliance requirements. The 91J33RE is RoHS3 compliant, while the 91J33R is RoHS non-compliant. Applications subject to RoHS3 regulatory requirements must use the 91J33RE. Applications without RoHS3 mandates may use either part based on availability and supply chain considerations.

Both parts are suitable for through-hole PCB assembly applications requiring 33 Ohm, 1.5W axial wirewound resistors with flame retardant coating and safety features.

Frequently Asked Questions (FAQ)

Q: Can the 91J33R be used as a direct replacement for the 91J33RE?

A: The 91J33R is electrically and mechanically equivalent to the 91J33RE. Both components have identical resistance, tolerance, power rating, composition, package type, dimensions, and temperature coefficient. The primary difference is RoHS compliance status. Use the 91J33R only in applications where RoHS3 compliance is not required.

Q: What is the difference between the 91J33RE and 91J33R?

A: The components are identical in all electrical and mechanical parameters. The 91J33RE is RoHS3 compliant with Not Applicable MSL rating. The 91J33R is RoHS non-compliant with MSL 1 (Unlimited) rating. Both are manufactured by Ohmite in the Series 90 family.

Q: Are these parts suitable for PCB assembly?

A: Yes. Both the 91J33RE and 91J33R are axial through-hole resistors designed for PCB assembly. The 0.142" diameter and 0.453" length accommodate standard through-hole mounting on printed circuit boards with 0.1" pitch hole spacing.

Q: What does RoHS3 compliance mean for component selection?

A: RoHS3 compliance indicates the component meets Restriction of Hazardous Substances Directive requirements. Applications subject to RoHS3 regulations must use the 91J33RE. The 91J33R, being RoHS non-compliant, is restricted to applications without RoHS3 mandates.

Q: Can I mix 91J33RE and 91J33R components in the same assembly?

A: Mixing is not recommended in applications subject to RoHS3 compliance verification. For non-regulated applications, mixing is acceptable from an electrical and mechanical standpoint, though maintaining consistent component sourcing is preferred for traceability and quality assurance.