Ohmite 43JR20 Equivalent & Substitute Parts

Part Overview

The Ohmite 43JR20 is a 200 mOhms ±5% 3W axial wirewound resistor from the Ohmicone® 40 series. This through-hole component is designed for applications requiring precision current-sensing and power dissipation in compact form factors. The part is currently active in production with 714 units in stock. Substitute parts are identified to address packaging preferences, compliance requirements, and inventory availability while maintaining identical electrical and mechanical specifications.

Substiute Parts

43JR20

OhmiteIn Stock: 79643JR20 Datasheet

Current PartRFQ

43JR20E

OhmiteIn Stock: 104043JR20E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 43JR20 are qualified based on the following critical parameters that determine functional equivalence:

• Resistance value: 200 mOhms
• Tolerance: ±5%
• Power rating: 3W
• Composition: Wirewound
• Package type: Axial
• Temperature coefficient: ±90ppm/°C
• Physical dimensions: 0.220" Dia x 0.594" L (5.60mm x 15.10mm)
• Termination count: 2

The 43JR20E qualifies as a parametric equivalent because it maintains all electrical and mechanical specifications identical to the main part. The primary distinction is packaging format (Bulk versus standard packaging) and RoHS compliance status.

Parameter Comparison

Engineering Selection Recommendations

Both the 43JR20 and 43JR20E are active production parts with identical electrical and mechanical specifications. Selection between these parts should be based on the following criteria:

• RoHS Compliance Requirement: If ROHS3 compliance is mandated by design or regulatory requirements, the 43JR20E is the appropriate selection.
• Packaging Format: The 43JR20E is supplied in Bulk packaging, while the 43JR20 uses standard packaging. Bulk packaging may be preferred for high-volume manufacturing operations.
• Inventory Availability: The 43JR20E has higher current stock (955 units) compared to the 43JR20 (714 units), which may influence lead time considerations.
• REACH Compliance: Both parts maintain REACH Unaffected status, indicating no additional regulatory constraints.

Frequently Asked Questions (FAQ)

Q: Can the 43JR20E be used as a direct replacement for the 43JR20?

A: Yes. The 43JR20E is a parametric equivalent with identical resistance (200 mOhms), tolerance (±5%), power rating (3W), temperature coefficient (±90ppm/°C), and physical dimensions (0.220" Dia x 0.594" L). Both are axial wirewound resistors from the Ohmicone® 40 series with two terminations. The parts are electrically and mechanically interchangeable.

Q: What is the difference between the 43JR20 and 43JR20E?

A: The primary differences are packaging format and RoHS compliance status. The 43JR20E is supplied in Bulk packaging and is ROHS3 compliant, while the 43JR20 uses standard packaging and is RoHS non-compliant. All electrical and mechanical specifications are identical.

Q: Does the RoHS compliance difference affect circuit performance?

A: No. RoHS compliance relates to material composition and manufacturing processes, not electrical performance. Both parts deliver identical resistance, tolerance, power dissipation, and temperature coefficient characteristics.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both the 43JR20 and 43JR20E have identical dimensions of 0.220" Dia x 0.594" L (5.60mm x 15.10mm), ensuring compatibility with existing PCB layouts and mechanical assemblies.

Q: Which part should be selected for new designs?

A: For new designs, the 43JR20E is recommended if ROHS3 compliance is required or anticipated. Both parts are active in production and suitable for new applications.