Ohmite 42J500 Equivalent & Substitute Parts

Part Overview

The Ohmite 42J500 is a 500 Ohm, 2W axial wirewound through-hole resistor from the Ohmicone® 40 series. This component is classified as Active and remains in production. Substitute parts are identified when the original part becomes unavailable, when packaging requirements differ, or when compliance certifications need to be updated for specific applications.

Substiute Parts

42J500

OhmiteIn Stock: 93742J500 Datasheet

Current PartRFQ

42J500E

OhmiteIn Stock: 128742J500E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The Ohmite 42J500E qualifies as a parametric equivalent based on the following criteria:

• Identical resistance value: 500 Ohms
• Identical tolerance: ±5%
• Identical power rating: 2W
• Identical composition: Wirewound
• Identical package type: Axial
• Identical temperature coefficient: ±20ppm/°C
• Identical physical dimensions: 0.220" Dia x 0.406" L (5.60mm x 10.30mm)
• Identical number of terminations: 2

The primary difference between these parts is packaging format (Bulk for 42J500E versus standard for 42J500) and RoHS compliance status.

Parameter Comparison

Engineering Selection Recommendations

Both the 42J500 and 42J500E are electrically and mechanically identical. Selection between these parts should be based on the following criteria:

• RoHS Compliance Requirements: The 42J500E is RoHS Compliant, while the 42J500 is RoHS non-compliant. Applications subject to RoHS directives must use the 42J500E.
• Packaging Format: The 42J500E is supplied in Bulk packaging, while the 42J500 uses standard packaging. Bulk packaging is suitable for high-volume manufacturing environments.
• Moisture Sensitivity: The 42J500E carries an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling.
• Inventory Availability: The 42J500E has higher inventory availability (1228 Pcs) compared to the 42J500 (848 Pcs).

Frequently Asked Questions (FAQ)

Q: Can the 42J500E be used as a direct replacement for the 42J500?

A: Yes. Both parts are electrically and mechanically identical with matching resistance, tolerance, power rating, composition, package type, and physical dimensions. The 42J500E is suitable for direct substitution in all applications where the 42J500 was originally specified.

Q: What is the difference between the 42J500 and 42J500E?

A: The primary differences are packaging format (Bulk for 42J500E), RoHS compliance status (42J500E is RoHS Compliant), and moisture sensitivity level classification. Electrical and mechanical specifications are identical.

Q: Which part should I select for RoHS-compliant applications?

A: The 42J500E is RoHS Compliant and must be used for applications subject to RoHS directives. The 42J500 is RoHS non-compliant and is not suitable for such applications.

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

A: No. Both parts have identical temperature coefficients (±20ppm/°C) and power ratings (2W). Thermal and electrical performance are equivalent.

Q: What packaging considerations apply to the 42J500E?

A: The 42J500E is supplied in Bulk packaging, which is optimized for high-volume manufacturing and automated assembly processes. Standard packaging for the 42J500 may be more suitable for lower-volume or manual assembly applications.