HTMS-108-02-T-S-RA Equivalent & Substitute Parts

Part Overview

The HTMS-108-02-T-S-RA is a rectangular connector header manufactured by Samtec Inc., designed for through-hole, right-angle board-to-board applications. This unshrouded header features 8 positions at 0.050" (1.27mm) pitch with male pin contacts and solder termination. The connector is actively produced and widely used in applications requiring reliable push-pull fastening and compact form factors. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when inventory constraints require component flexibility.

Substiute Parts

HTMS-108-02-T-S-RA

Samtec Inc.In Stock: 1039HTMS-108-02-T-S-RA Datasheet

Current PartRFQ

5-104186-5

TE Connectivity AMP ConnectorsIn Stock: 10245-104186-5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HTMS-108-02-T-S-RA is determined by the following critical parameters:

• Connector Type & Contact Configuration: Header with male pin contacts
• Pitch and Position Count: 0.050" (1.27mm) pitch with 8 positions in single row
• Mounting & Termination: Through-hole, right-angle mounting with solder termination
• Fastening Mechanism: Push-pull fastening type
• Compliance & Environmental: UL94 V-0 flammability rating, ROHS3 compliance, MSL 1 rating

The substitute part 5-104186-5 (TE Connectivity AMP Connectors) meets these core substitution criteria. Both connectors share identical pitch, position count, mounting orientation, termination method, and fastening type. Both are active products with equivalent compliance certifications and environmental ratings.

Parameter Comparison

Engineering Selection Recommendations

Both the HTMS-108-02-T-S-RA and 5-104186-5 are active products with equivalent compliance profiles. Selection between these parts should be based on the following provided specifications:

HTMS-108-02-T-S-RA (Samtec) is specified with a 5A per contact current rating and operates across -55°C to 105°C. The connector features square male pin contacts with tin finish, phosphor bronze contact material, and LCP insulation. Post contact length is 0.140" (4.66mm).

5-104186-5 (TE Connectivity) operates across -65°C to 105°C with a 30VAC voltage rating. The connector features circular male pin contacts with gold finish on mating surfaces, copper alloy contact material, and thermoplastic insulation. Post contact length is 0.100" (2.54mm). This part supports both board-to-board and cable applications.

Both connectors meet UL94 V-0 flammability requirements, ROHS3 compliance, and MSL 1 moisture sensitivity specifications. Physical differences in contact geometry, finish, and insulation material should be evaluated against specific application requirements.

Frequently Asked Questions (FAQ)

Q: Can 5-104186-5 directly replace HTMS-108-02-T-S-RA in all applications?

A: Both connectors share identical pitch (0.050"), position count (8), mounting type (through-hole right-angle), and fastening mechanism (push-pull). However, differences exist in contact geometry (square vs. circular), contact finish (tin vs. gold), and post length (0.140" vs. 0.100"). These differences may affect mating force, contact resistance, and PCB layout. Application-specific validation is necessary.

Q: What are the key dimensional differences?

A: The HTMS-108-02-T-S-RA has an insulation height of 0.096" (2.44mm) and mating contact length of 0.100" (2.54mm). The 5-104186-5 has an insulation height of 0.116" (2.95mm) and mating contact length of 0.125" (3.18mm). Post lengths differ: 0.140" (4.66mm) for HTMS-108-02-T-S-RA versus 0.100" (2.54mm) for 5-104186-5.

Q: Are both parts RoHS compliant?

A: Yes, both HTMS-108-02-T-S-RA and 5-104186-5 are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings.

Q: What is the temperature operating range for each part?

A: HTMS-108-02-T-S-RA operates from -55°C to 105°C. The 5-104186-5 operates from -65°C to 105°C, providing a lower minimum temperature specification.

Q: What are the contact material and finish differences?

A: HTMS-108-02-T-S-RA uses phosphor bronze contacts with tin finish. The 5-104186-5 uses copper alloy contacts with gold finish on mating surfaces and tin finish on posts. Gold plating provides enhanced corrosion resistance and lower contact resistance.

Q: Are both connectors available in the same packaging?

A: Both parts are supplied in tube packaging. Current inventory shows 1024 pcs for HTMS-108-02-T-S-RA and 964 pcs for 5-104186-5.