TST-115-03-L-D Equivalent & Substitute Parts

Part Overview

The TST-115-03-L-D is an active rectangular connector header manufactured by Samtec Inc. in the Flex Stack series. This through-hole mounted connector features 30 positions arranged in 2 rows with 0.100" (2.54mm) pitch, designed for board-to-cable/wire applications. The part is shrouded with 4-wall construction and employs push-pull fastening with solder termination. Samtec maintains this part in active production status with 745 units currently in stock. Substitute parts are identified when equivalent electrical and mechanical parameters align within the allowed specifications for this connector category.

Substiute Parts

TST-115-03-L-D

Samtec Inc.In Stock: 799TST-115-03-L-D Datasheet

Current PartRFQ

3-1761603-0

TE Connectivity AMP ConnectorsIn Stock: 12643-1761603-0 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 3-1761603-0 (TE Connectivity AMP Connectors) qualifies as an equivalent based on the following critical parameters:

Matching parameters: Connector type (Header), contact type (Male Pin), number of positions (30), number of rows (2), mating pitch (0.100"/2.54mm), row spacing (0.100"/2.54mm), mounting type (Through Hole), shrouding (Shrouded - 4 Wall), termination (Solder), fastening type (Push-Pull), contact shape (Square), contact material (Phosphor Bronze), insulation material (Polybutylene Terephthalate/PBT), flammability rating (UL94 V-0), and MSL rating (1/Unlimited).

Differing parameters within acceptable ranges: Contact length specifications, contact finish thickness, operating temperature range, current rating per contact, voltage rating, and insulation color. These variations do not preclude substitution when application requirements fall within the substitute part's electrical and thermal specifications.

Parameter Comparison

Engineering Selection Recommendations

Both parts maintain active product status and comply with RoHS and UL94 V-0 flammability requirements. The TST-115-03-L-D offers a higher current rating (3.4A per contact) and extended upper operating temperature (125°C versus 105°C). The 3-1761603-0 provides a specified voltage rating (250VAC) and lower temperature floor (-65°C versus -55°C), making it suitable for applications requiring broader thermal range coverage at lower current levels. Selection between these parts depends on application current and temperature requirements. Both parts carry MSL 1 rating and are suitable for unlimited shelf life storage without moisture control.

Frequently Asked Questions (FAQ)

Q: Can the 3-1761603-0 directly replace the TST-115-03-L-D in all applications?

A: Direct substitution is valid when application current requirements do not exceed 1A per contact and operating temperature remains within -65°C to 105°C. The TST-115-03-L-D supports higher current (3.4A per contact) and upper temperature (125°C), making it preferable for high-current or high-temperature applications.

Q: What are the key dimensional differences between these parts?

A: Contact post length differs significantly: TST-115-03-L-D measures 0.565" (14.35mm) while 3-1761603-0 measures 0.102" (2.60mm). Mating contact length also varies slightly (0.250" versus 0.240"). These differences may affect PCB layout and mating depth. Verify mechanical compatibility with your specific application before substitution.

Q: Are both parts RoHS compliant?

A: Yes. The TST-115-03-L-D is ROHS3 Compliant. The 3-1761603-0 is RoHS Compliant. Both meet RoHS requirements for restricted substance elimination.

Q: What is the difference in contact finish thickness?

A: The TST-115-03-L-D has 10.0µin (0.25µm) gold mating finish, while 3-1761603-0 has 30.0µin (0.76µm). The thicker finish on the substitute part provides enhanced wear resistance and corrosion protection in high-cycle mating applications.

Q: Do both parts feature keying slots?

A: Yes. Both the TST-115-03-L-D and 3-1761603-0 include keying slot features to ensure correct mating orientation and prevent reverse insertion.

Q: What is the moisture sensitivity level for these connectors?

A: Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity. These connectors do not require controlled humidity storage or baking procedures prior to assembly.