WS3A1001J Equivalent & Substitute Parts

Part Overview

The WS3A1001J is a 1 kOhms ±5% 3W through-hole axial wirewound resistor manufactured by Bourns Inc. This component features flame retardant coating, pulse withstanding capability, and safety-rated construction, making it suitable for applications requiring high power dissipation and reliability. The part is currently in active production status with 821 units available in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement in circuit designs.

Substiute Parts

WS3A1001J

Bourns Inc.In Stock: 917WS3A1001J Datasheet

Current PartRFQ

WS3M1001J

Bourns Inc.In Stock: 5204WS3M1001J Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the WS3A1001J is determined by the following critical parameters:

• Resistance value: 1 kOhms
• Tolerance: ±5%
• Power rating: 3W
• Composition: Wirewound
• Package: Axial
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C to 200°C
• Compliance certifications: ROHS3, REACH Unaffected, EAR99

The WS3M1001J meets all electrical and mechanical substitution criteria. Variations in physical dimensions and packaging format (cut tape versus standard packaging) do not affect electrical performance or circuit compatibility when the axial package type is maintained.

Parameter Comparison

Engineering Selection Recommendations

Both WS3A1001J and WS3M1001J are active production components from Bourns Inc. with identical electrical specifications and full compliance with ROHS3 and REACH requirements. Selection between these parts should be based on:

• Circuit board layout constraints: The WS3M1001J has smaller physical dimensions (5.50mm diameter vs. 6.50mm), which may be advantageous in space-constrained applications.
• Packaging requirements: The WS3M1001J is supplied in cut tape format, suitable for automated assembly processes, while the WS3A1001J uses standard packaging.
• Inventory availability: The WS3M1001J has significantly higher stock availability (5185 units vs. 821 units).

Both parts maintain identical electrical performance, temperature stability, and safety ratings across all specified operating conditions.

Frequently Asked Questions (FAQ)

Q: Can WS3M1001J replace WS3A1001J in existing circuit designs?

A: Yes. Both parts have identical resistance (1 kOhms), tolerance (±5%), power rating (3W), temperature coefficient (±200ppm/°C), and operating temperature range (-55°C to 200°C). The axial package type is maintained in both variants.

Q: What is the difference between WS3A1001J and WS3M1001J?

A: The primary differences are physical dimensions and packaging format. WS3M1001J is slightly smaller (5.50mm diameter vs. 6.50mm) and supplied in cut tape format for automated assembly, while WS3A1001J uses standard packaging. Electrical performance is identical.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry EAR99 classification. Safety ratings and flame retardant properties are identical.

Q: Which part should be selected for new designs?

A: Selection depends on assembly method and board layout requirements. For automated assembly, WS3M1001J in cut tape format is appropriate. For manual assembly or where larger dimensions are acceptable, either part is suitable. Both maintain identical electrical specifications.

Q: Does the dimensional difference affect circuit performance?

A: No. The dimensional variation does not affect electrical performance, thermal characteristics, or safety ratings. Differences are purely mechanical and relate to physical footprint on the circuit board.