HTST-136-04-T-D-RA Equivalent & Substitute Parts

Part Overview

The HTST-136-04-T-D-RA is a rectangular connector header manufactured by Samtec Inc., designed for through-hole, right-angle board-to-cable/wire applications. This 72-position connector operates across -55°C to 105°C and features shrouded 4-wall construction with push-pull fastening. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part specifications, enabling direct functional replacement in circuit designs.

Substiute Parts

HTST-136-04-T-D-RA

Samtec Inc.In Stock: 1052HTST-136-04-T-D-RA Datasheet

Current PartRFQ

TST-136-04-T-D-RA

Samtec Inc.In Stock: 927TST-136-04-T-D-RA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The TST-136-04-T-D-RA qualifies as a substitute based on the following critical parameters that determine functional equivalence:

• Number of Positions: 72 (identical)
• Pitch - Mating: 0.100" (2.54mm) (identical)
• Mounting Type: Through Hole, Right Angle (identical)
• Contact Type: Male Pin (identical)
• Current Rating: 3.4A per Contact (identical)
• Operating Temperature: -55°C ~ 105°C (identical)
• Shrouding: Shrouded - 4 Wall (identical)
• Fastening Type: Push-Pull (identical)
• Material Flammability Rating: UL94 V-0 (identical)
• RoHS Status: ROHS3 Compliant (identical)

The substitute part differs in series designation (TST vs. HTST), insulation material composition, and insulation color, which do not affect electrical or mechanical compatibility for standard board-to-cable/wire interconnect applications.

Parameter Comparison

Engineering Selection Recommendations

Both HTST-136-04-T-D-RA and TST-136-04-T-D-RA are Active status products with ROHS3 compliance and UL94 V-0 flammability certification. Selection between these parts is based on availability and application-specific insulation material requirements. The HTST series uses Liquid Crystal Polymer (LCP) insulation, while the TST series uses glass-filled Polybutylene Terephthalate (PBT). Both materials meet the same electrical and thermal performance specifications. The TST-136-04-T-D-RA currently has 868 units in stock, while the HTST-136-04-T-D-RA has 981 units available.

Frequently Asked Questions (FAQ)

Q: Can TST-136-04-T-D-RA directly replace HTST-136-04-T-D-RA in existing designs?

A: Yes. Both parts share identical electrical specifications (72 positions, 2.54mm pitch, 3.4A per contact, -55°C to 105°C operating range), mechanical dimensions, and mounting configuration. The difference in insulation material (LCP vs. glass-filled PBT) does not affect functional compatibility for standard board-to-cable/wire interconnect applications.

Q: What is the difference between the insulation materials?

A: HTST-136-04-T-D-RA uses Liquid Crystal Polymer (LCP), while TST-136-04-T-D-RA uses glass-filled Polybutylene Terephthalate (PBT). Both materials are UL94 V-0 rated and operate across the same temperature range. Material selection depends on specific application requirements for mechanical properties or environmental exposure.

Q: Are there any compliance differences between these parts?

A: No. Both parts are ROHS3 compliant, carry EAR99 ECCN classification, and share the same HTSUS code (8536.69.4040). Both are rated UL94 V-0 for flammability.

Q: What does the different Moisture Sensitivity Level (MSL) indicate?

A: HTST-136-04-T-D-RA is listed as Not Applicable, while TST-136-04-T-D-RA is MSL 1 (Unlimited). This reflects different insulation material characteristics but does not impact performance in standard operating conditions for through-hole soldered applications.

Q: Can I mix HTST and TST series connectors in the same assembly?

A: Yes. Both parts have identical mating pitch (2.54mm), contact geometry, and electrical ratings. They can be used interchangeably in multi-connector assemblies without compatibility issues.