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TLW-125-05-H-S Equivalent & Substitute Parts
Part Overview
The TLW-125-05-H-S is an active rectangular connector header manufactured by Samtec Inc. as part of the Flex Stack TLW series. This through-hole mounted connector features 25 positions at 0.100" (2.54mm) pitch with unshrouded, square male pin contacts. The connector is designed for board-to-board or cable applications with solder termination and push-pull fastening. Finding equivalent or substitute parts may be necessary due to inventory constraints, lead time requirements, or specific packaging preferences while maintaining electrical and mechanical compatibility.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Samtec Inc. |
| Series | Flex Stack, TLW |
| Connector Type | Header |
| Contact Type | Male Pin |
| Number of Positions | 25 |
| Pitch - Mating | 0.100" (2.54mm) |
| Mounting Type | Through Hole |
| Termination | Solder |
| Current Rating | 5.2A per Contact |
| Operating Temperature | -55°C ~ 125°C |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
The TLW-125-05-G-S qualifies as a direct substitute for the TLW-125-05-H-S based on the following critical parameters that determine interchangeability:
- Identical manufacturer (Samtec Inc.)
- Same series designation (Flex Stack, TLW)
- Matching connector type, contact type, and gender (Header, Male Pin)
- Identical number of positions (25) and mating pitch (0.100" / 2.54mm)
- Identical mounting type (Through Hole) and termination method (Solder)
- Matching fastening type (Push-Pull)
- Identical contact geometry (Square shape, 0.105" mating length, 0.170" post length)
- Identical insulation material and height (LCP, 0.060")
- Matching electrical ratings (5.2A per contact, -55°C ~ 125°C operating range)
- Identical compliance status (ROHS3 Compliant, MSL 1)
The primary difference is packaging format (Bulk for substitute versus standard for main part), which does not affect electrical or mechanical compatibility.
Parameter Comparison
| Parameter | TLW-125-05-H-S | TLW-125-05-G-S |
|---|---|---|
| Manufacturer | Samtec Inc. | Samtec Inc. |
| Series | Flex Stack, TLW | Flex Stack, TLW |
| Connector Type | Header | Header |
| Contact Type | Male Pin | Male Pin |
| Number of Positions | 25 | 25 |
| Pitch - Mating | 0.100" (2.54mm) | 0.100" (2.54mm) |
| Number of Rows | 1 | 1 |
| Mounting Type | Through Hole | Through Hole |
| Termination | Solder | Solder |
| Fastening Type | Push-Pull | Push-Pull |
| Contact Length - Mating | 0.105" (2.67mm) | 0.105" (2.67mm) |
| Contact Length - Post | 0.170" (4.32mm) | 0.170" (4.32mm) |
| Overall Contact Length | 0.335" (8.51mm) | 0.335" (8.51mm) |
| Insulation Height | 0.060" (1.52mm) | 0.060" (1.52mm) |
| Contact Shape | Square | Square |
| Contact Finish - Mating | Gold | Gold |
| Contact Material | Phosphor Bronze | Phosphor Bronze |
| Insulation Material | Liquid Crystal Polymer (LCP) | Liquid Crystal Polymer (LCP) |
| Insulation Color | Black | Black |
| Current Rating | 5.2A per Contact | 5.2A per Contact |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C |
| Product Status | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) |
| ECCN | EAR99 | EAR99 |
| HTSUS | 8536.69.4040 | 8536.69.4040 |
Engineering Selection Recommendations
Both the TLW-125-05-H-S and TLW-125-05-G-S are active products from Samtec Inc. with identical ROHS3 compliance and regulatory certifications (EAR99, HTSUS 8536.69.4040). The TLW-125-05-G-S is a valid substitute based on matching electrical specifications, mechanical dimensions, and material composition. Selection between these parts should be based on packaging availability, inventory status, and lead time requirements, as both parts meet identical functional and compliance criteria for rectangular connector applications requiring 25-position, 2.54mm pitch through-hole headers.
Frequently Asked Questions (FAQ)
Q: Can TLW-125-05-G-S be used as a direct replacement for TLW-125-05-H-S in existing designs?
A: Yes. Both parts share identical electrical ratings (5.2A per contact), mechanical dimensions (0.100" pitch, 25 positions), contact geometry (square male pins, 0.105" mating length), insulation specifications (LCP, 0.060" height), and operating temperature range (-55°C ~ 125°C). They are functionally interchangeable in board-to-board and cable applications.
Q: What is the difference between these two part numbers?
A: The primary difference is packaging format. The TLW-125-05-G-S is supplied in bulk packaging, while the TLW-125-05-H-S uses standard packaging. All electrical, mechanical, and compliance characteristics are identical.
Q: Are both parts RoHS compliant?
A: Yes. Both TLW-125-05-H-S and TLW-125-05-G-S are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.
Q: What contact finish specifications apply to these connectors?
A: Both parts feature gold-plated mating contacts. The TLW-125-05-G-S specifies additional detail: 10.0µin (0.25µm) thickness on mating contacts with flash gold on post contacts.
Q: Are these connectors suitable for high-current applications?
A: Each contact is rated for 5.2A, making these connectors suitable for applications requiring moderate current distribution across multiple positions. Total current capacity depends on the number of loaded positions and thermal management considerations.
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