WS5A1001J Equivalent & Substitute Parts

Part Overview

The WS5A1001J is a 1 kOhms ±5% 5W through-hole wirewound resistor manufactured by Bourns Inc. in the WS series. This axial component features flame retardant coating, pulse withstanding capability, and safety-rated construction, designed for applications requiring reliable power dissipation and thermal stability across industrial temperature ranges. The part maintains Active product status with full RoHS3 and REACH compliance. Substitute parts are identified when packaging or inventory requirements necessitate alternative sourcing while maintaining identical electrical and core mechanical specifications.

Substiute Parts

WS5A1001J

Bourns Inc.In Stock: 1088WS5A1001J Datasheet

Current PartRFQ

WS5M1001J

Bourns Inc.In Stock: 1733WS5M1001J Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The WS5M1001J qualifies as a direct electrical substitute for the WS5A1001J based on matching core parameters: identical resistance value (1 kOhms), tolerance (±5%), power rating (5W), wirewound composition, temperature coefficient (±200ppm/°C), operating temperature range (-55°C to 200°C), and feature set (flame retardant coating, pulse withstanding, safety rating). Both parts are manufactured by Bourns Inc. within the WS series and maintain equivalent RoHS3 and REACH compliance status.

The primary distinction between these parts is packaging format: WS5A1001J is supplied in Tape & Box (TB) configuration, while WS5M1001J is supplied in Cut Tape (CT) configuration. Physical dimensions differ due to manufacturing process variations: WS5A1001J measures 0.335" diameter × 0.965" length (8.50mm × 24.50mm), while WS5M1001J measures 0.256" diameter × 0.689" length (6.50mm × 17.50mm). These dimensional differences do not affect electrical performance or thermal characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both WS5A1001J and WS5M1001J are Active products with full ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for current and future applications. Selection between these parts should be based on packaging and inventory requirements rather than electrical performance, as all functional parameters are identical.

The WS5A1001J in Tape & Box format is suitable for applications requiring bulk packaging and storage. The WS5M1001J in Cut Tape format is appropriate for automated assembly processes and applications with space constraints, given its smaller physical dimensions. Both parts support the same circuit design specifications and thermal operating envelope.

Frequently Asked Questions (FAQ)

Q: Can WS5M1001J replace WS5A1001J in existing circuit designs?

A: Yes. Both parts are electrically identical with matching resistance (1 kOhms), tolerance (±5%), power rating (5W), temperature coefficient (±200ppm/°C), and operating temperature range (-55°C to 200°C). Substitution is valid from an electrical standpoint. Physical dimensions differ, but both maintain axial package geometry suitable for through-hole PCB mounting.

Q: What is the primary difference between these substitute parts?

A: The main differences are packaging format (Tape & Box versus Cut Tape) and physical dimensions. WS5A1001J measures 0.335" diameter × 0.965" length, while WS5M1001J measures 0.256" diameter × 0.689" length. These dimensional variations do not affect electrical performance or thermal characteristics.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both WS5A1001J and WS5M1001J are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and use.

Q: Which part should be selected for automated assembly?

A: WS5M1001J in Cut Tape format is optimized for automated pick-and-place assembly processes. WS5A1001J in Tape & Box format is suitable for manual assembly or bulk component handling.

Q: Do these parts have identical thermal performance?

A: Yes. Both parts share identical temperature coefficient (±200ppm/°C) and operating temperature range (-55°C to 200°C), ensuring equivalent thermal stability and performance across the specified operating envelope.