SPS-51T-187 Equivalent & Substitute Parts

Part Overview

The SPS-51T-187 is a 0.187" (4.75mm) Quick Connect Female Crimp Connector manufactured by JST Sales America Inc., designed for wire gauges 14-20 AWG in non-insulated applications. This terminal operates as a free-hanging in-line connector with brass contacts finished in tin. The part is Active in product status and RoHS Compliant, making it suitable for current production and regulated applications.

Substitute parts are identified when equivalent electrical and mechanical parameters align within the allowed specifications for this terminal category, enabling component interchangeability in compatible circuit designs.

Substiute Parts

SPS-51T-187

JST Sales America Inc.In Stock: 904SPS-51T-187 Datasheet

Current PartRFQ

170325-1

TE Connectivity AMP ConnectorsIn Stock: 3915170325-1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPS-51T-187 is determined by alignment of the following critical parameters:

• Tab Width: 0.187" (4.75mm) — must match exactly for mechanical fit
• Tab Thickness: 0.020" (0.51mm) — must match for contact engagement
• Termination Method: Crimp — must be identical
• Gender: Female — must be identical
• Contact Material and Finish: Brass with Tin — must be identical
• Mounting Type: Free Hanging (In-Line) — must be identical

Wire gauge range may vary within acceptable limits provided the tab dimensions and contact specifications remain compatible. The substitute part 170325-1 meets these criteria with a wire gauge range of 16-20 AWG, representing a narrower but compatible specification.

Parameter Comparison

Engineering Selection Recommendations

Both the SPS-51T-187 and 170325-1 are Active products with current manufacturing support and regulatory compliance. Selection between these parts should be based on the following factors:

Wire Gauge Requirement: The SPS-51T-187 accommodates 14-20 AWG, while the 170325-1 is rated for 16-20 AWG. Applications requiring 14-15 AWG termination must use the SPS-51T-187. Applications within the 16-20 AWG range may use either part.

Overall Length: The SPS-51T-187 measures 0.677" (17.20mm) compared to 170325-1 at 0.850" (21.59mm). Space-constrained designs may require the shorter SPS-51T-187.

Packaging Format: The SPS-51T-187 is supplied in Tape & Reel (TR) format, while 170325-1 is supplied in Cut Tape (CT) format. Procurement volume and assembly automation requirements should guide packaging selection.

Regulatory Compliance: Both parts meet RoHS requirements. The SPS-51T-187 is RoHS Compliant, and the 170325-1 is ROHS3 Compliant, both suitable for regulated markets.

Frequently Asked Questions (FAQ)

Q: Can the 170325-1 replace the SPS-51T-187 in all applications?

A: The 170325-1 is compatible with applications using wire gauges 16-20 AWG. Applications requiring 14-15 AWG termination must use the SPS-51T-187. Both parts share identical tab dimensions, contact material, and mounting characteristics within their respective wire gauge ranges.

Q: What is the significance of the different overall lengths?

A: The SPS-51T-187 has an overall length of 0.677" (17.20mm), while the 170325-1 measures 0.850" (21.59mm). This difference may affect fit in space-constrained connector housings or applications with strict dimensional requirements. Verify housing compatibility before substitution.

Q: Are both parts RoHS compliant?

A: Yes. The SPS-51T-187 is RoHS Compliant, and the 170325-1 is ROHS3 Compliant. Both meet regulatory requirements for restricted substance compliance.

Q: What packaging formats are available?

A: The SPS-51T-187 is supplied in Tape & Reel (TR) format, suitable for high-volume automated assembly. The 170325-1 is supplied in Cut Tape (CT) format, suitable for lower-volume or manual assembly operations.

Q: Do the tab dimensions match between these parts?

A: Yes. Both parts feature identical tab width of 0.187" (4.75mm) and tab thickness of 0.020" (0.51mm), ensuring mechanical compatibility with mating connectors designed for these specifications.