Equivalent & Substitute Parts for R3J1R0

Part Overview

The R3J1R0 is a 1 Ohm, 3W through-hole wirewound resistor manufactured by Ohmite in the PC-58 series. This radial lead component features flame retardant coating and safety construction, designed for applications requiring precision low-resistance dissipation in compact form factors. The part is currently active in production with 865 units in stock. Substitute parts are identified to address packaging variations and compliance requirements while maintaining identical electrical and mechanical specifications.

Substiute Parts

R3J1R0

OhmiteIn Stock: 955R3J1R0 Datasheet

Current PartRFQ

R3J1R0E

OhmiteIn Stock: 786R3J1R0E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The R3J1R0E is classified as a parametric equivalent to the R3J1R0. Substitution is valid based on the following criteria:

• Identical resistance value: 1 Ohms
• Identical tolerance: ±5%
• Identical power rating: 3W
• Identical composition: Wirewound
• Identical package type: Radial Lead
• Identical temperature coefficient: ±260ppm/°C
• Identical physical dimensions: 0.438" L x 0.313" W (11.13mm x 7.95mm)
• Identical seated height: 0.469" (11.91mm)
• Identical number of terminations: 2
• Identical features: Flame Retardant Coating, Safety

The primary difference between these parts is packaging format (Bulk for R3J1R0E versus standard for R3J1R0) and RoHS compliance status.

Parameter Comparison

Engineering Selection Recommendations

Both R3J1R0 and R3J1R0E are active production parts from Ohmite's PC-58 series with identical electrical and mechanical specifications. Selection between these parts should be based on the following factors:

R3J1R0 is suitable for applications where RoHS non-compliant components are acceptable and standard packaging is required.

R3J1R0E is the appropriate choice for applications requiring ROHS3 compliance. This variant maintains all electrical and mechanical parameters while meeting current environmental and safety standards. The bulk packaging format of R3J1R0E may influence procurement and inventory management decisions.

Both parts are suitable for direct substitution in circuit designs where the specified electrical characteristics (1 Ohm, 3W, ±5% tolerance, ±260ppm/°C temperature coefficient) and physical form factor (radial lead, 11.13mm x 7.95mm x 11.91mm) are required.

Frequently Asked Questions (FAQ)

Q: Can R3J1R0E be used as a direct replacement for R3J1R0?

A: Yes. The R3J1R0E is a parametric equivalent with identical resistance, tolerance, power rating, composition, package type, temperature coefficient, and physical dimensions. The primary differences are packaging format and RoHS compliance status.

Q: What is the difference in packaging between R3J1R0 and R3J1R0E?

A: R3J1R0 uses standard packaging, while R3J1R0E is supplied in bulk packaging format. Both maintain identical component specifications and radial lead configuration.

Q: Does RoHS compliance affect electrical performance?

A: No. ROHS3 compliance in the R3J1R0E does not alter electrical characteristics. Both parts deliver identical resistance, tolerance, power dissipation, and temperature coefficient performance.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both R3J1R0 and R3J1R0E have identical dimensions of 0.438" L x 0.313" W (11.13mm x 7.95mm) with a maximum seated height of 0.469" (11.91mm). They are mechanically interchangeable in PCB layouts.

Q: Which part should be selected for new designs?

A: For new designs, R3J1R0E is recommended due to ROHS3 compliance, which aligns with current environmental and regulatory standards while maintaining full electrical and mechanical compatibility.