Ohmite 42J820 Equivalent & Substitute Parts

Part Overview

The Ohmite 42J820 is an 820 Ohms ±5% 2W through-hole resistor with axial wirewound construction, part of the Ohmicone® 40 series. This component is currently active in production and maintains 1097 pieces in new original stock. The need for equivalent and substitute parts arises from packaging variations, compliance requirements, and inventory availability across different supply channels and applications.

Substiute Parts

42J820

OhmiteIn Stock: 111342J820 Datasheet

Current PartRFQ

42J820E

OhmiteIn Stock: 81542J820E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the Ohmite 42J820 is determined by strict equivalence across the following critical parameters:

• Resistance value: 820 Ohms
• Tolerance: ±5%
• Power rating: 2W
• Composition: Wirewound
• Package configuration: Axial
• Temperature coefficient: ±20ppm/°C
• Physical dimensions: 0.220" Dia x 0.406" L (5.60mm x 10.30mm)
• Termination count: 2

The identified substitute, Ohmite 42J820E, maintains identical electrical and mechanical specifications. The primary distinction lies in packaging format (bulk versus standard) and RoHS compliance status, which may influence selection based on procurement requirements and regulatory obligations.

Parameter Comparison

Engineering Selection Recommendations

Both the 42J820 and 42J820E are active production components from Ohmite with identical electrical and mechanical specifications. Selection between these parts should be based on the following criteria:

42J820 (Standard Packaging): Select this part number when standard packaging is acceptable and RoHS non-compliant components meet regulatory requirements for your application.

42J820E (Bulk Packaging, ROHS3 Compliant): Select this part number when ROHS3 compliance is mandated by design specifications, procurement policies, or end-market regulations. The bulk packaging format is suitable for high-volume manufacturing environments.

Both parts are functionally interchangeable in circuit applications requiring 820 Ohms ±5% 2W axial wirewound resistors with ±20ppm/°C temperature coefficient.

Frequently Asked Questions (FAQ)

Q: Are the 42J820 and 42J820E electrically identical? A: Yes. Both parts have identical resistance (820 Ohms), tolerance (±5%), power rating (2W), temperature coefficient (±20ppm/°C), and wirewound composition. They are direct functional equivalents.

Q: What is the difference between these part numbers? A: The primary differences are packaging format (standard versus bulk) and RoHS compliance status. The 42J820E is ROHS3 compliant, while the 42J820 is RoHS non-compliant.

Q: Can I use 42J820E as a direct replacement for 42J820? A: Yes, provided your application and procurement requirements accept ROHS3 compliant components and bulk packaging. The electrical and mechanical specifications are identical.

Q: Are the physical dimensions identical? A: Yes. Both parts measure 0.220" Dia x 0.406" L (5.60mm x 10.30mm) and use axial package configuration with 2 terminations.

Q: Which part should I specify for new designs? A: Specify 42J820E for new designs if ROHS3 compliance is required by your regulatory framework or customer specifications. Both parts are active production items from Ohmite.

Q: What is the temperature coefficient specification? A: Both parts have a temperature coefficient of ±20ppm/°C, indicating stable resistance performance across the operating temperature range.