TSM-125-04-FM-DH-A-K-TR SAMTEC Connector (Other) In Stock
SAMTEC TSM-125-04-FM-DH-A-K-TR is a 50-position, dual-row .100" (2.54 mm) pitch surface mount terminal strip with female contacts, gold-plated finish, and tape-and-reel packaging for automated assembly. Rated at 3 A per contact and operating from -65°C to +150°C for robust industrial use. Available in stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 50
- Lifecycle
- ACTIVE
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 50 positions in dual-row .100" (2.54 mm) pitch for broad connectivity on a standard SMT footprint
- Female (FM) contact gender accepts standard 2.54 mm dual-row male headers for secure board-to-board mating
- Gold-plated contacts on phosphor bronze ensure minimal contact resistance and reliable performance over many mating cycles
- Tape-and-reel (TR) packaging and -K keying feature simplify automated assembly and prevent mis-mating
Applications
The TSM-125-04-FM-DH-A-K-TR is used in backplane-to-daughtercard interfaces, industrial I/O expansion boards, and FPGA carrier cards where 50 dual-row SMT signal and power connections are needed in a standard 2.54 mm pitch footprint. Its keyed female contacts prevent incorrect insertion in field-replaceable module systems such as VME, cPCI, or custom embedded computing platforms. The tape-and-reel format supports high-volume automated PCB production in communications and defense electronics.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What contact count, pitch, and gender does the TSM-125-04-FM-DH-A-K-TR offer for board-to-board mating?
The TSM-125-04-FM-DH-A-K-TR provides 50 female contacts in a dual-row .100" (2.54 mm) pitch surface mount configuration. The female gender mates directly with standard 2.54 mm dual-row male headers, making it interchangeable with common DIP-style male strips used across embedded and industrial boards.
How does the -K keying feature on TSM-125-04-FM-DH-A-K-TR protect against connector mis-insertion?
The -K suffix indicates a keying feature built into the connector housing, which physically prevents incorrect orientation or wrong-connector insertion during assembly and field servicing. This is critical in systems with multiple 50-pin dual-row connectors on the same board, reducing the risk of damaging a 3 A per-pin rated interface.
Over what temperature range does the TSM-125-04-FM-DH-A-K-TR operate, and which harsh environments does this cover?
SAMTEC rates this connector for operation from -65°C to +150°C, encompassing automotive underhood environments, military ground vehicle electronics, and industrial motor drive cabinets where ambient temperatures routinely exceed 85°C during normal operation.
What current can each contact handle, and can the 50-position TSM-125-04-FM-DH-A-K-TR carry power rails alongside signals?
Each of the 50 contacts is rated at 3 A continuous, allowing multiple contacts to be paralleled for power distribution. For example, grouping 4 contacts yields 12 A per power rail, making it feasible to route both 3.3 V and 5 V supply rails alongside digital signals in a single 50-position connector.
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