TFM-121-01-H-D-A-P-TR SAMTEC Connector (Other) In Stock
SAMTEC TFM-121-01-H-D-A-P-TR is a high-reliability Tiger Eye dual-row terminal strip with 0.050" (1.27 mm) pitch, 21-position horizontal through-hole configuration with polarizing peg, supplied in tape-and-reel packaging for automated assembly. Available from authorized distributors with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 42
- Lifecycle
- ACTIVE
- Datasheet
- TFM-121-01-H-D-A-P-TR Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TFM-121-01-H-D-A-P-TR?
- Tiger Eye contact system with gold-plated contacts for reliable low-resistance mating across thousands of insertion cycles at 0.050" (1.27 mm) pitch
- Tape-and-reel (TR) packaging enables high-speed automated pick-and-place assembly, eliminating manual loading errors on SMT lines
- Polarizing peg (P suffix) mechanically prevents incorrect mating orientation across all 42 contacts in dual-row horizontal through-hole configuration
What is TFM-121-01-H-D-A-P-TR used for?
The TFM-121-01-H-D-A-P-TR is used in high-volume PCB assemblies requiring 42 contacts at 1.27 mm pitch where automated pick-and-place placement is critical, such as network interface cards, medical monitoring modules, and industrial sensor hubs. Its polarizing peg ensures correct connector orientation during field installation, preventing damage to the 42-contact interface in equipment serviced by non-specialist technicians. The horizontal (H) through-hole configuration is particularly suitable for right-angle cable-to-board interfaces and backplane-style connectors in rack-mounted electronics.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TFM-121-01-H-D-A-P-TR datasheet?
TFM-121-01-H-D-A-P-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TFM-121-01-H-D-A-P-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What does the TR suffix on TFM-121-01-H-D-A-P-TR signify, and how does it benefit high-volume production?
The TR suffix indicates tape-and-reel packaging, where connectors are pre-loaded into embossed carrier tape wound on a reel—typically 500 to 1000 pieces per reel depending on connector size. This allows automated SMT pick-and-place machines to feed and place each TFM-121-01-H-D-A-P-TR without manual intervention, achieving placement speeds of 2000 to 5000 components per hour and eliminating the orientation errors that occur with tray or bulk-packaged connectors in high-volume manufacturing.
How does the polarizing peg (P suffix) on TFM-121-01-H-D-A-P-TR prevent assembly errors in multi-connector boards?
The polarizing peg is a locating feature that physically prevents the mating connector from being inserted in the wrong orientation into the TFM-121-01-H-D-A-P-TR. On boards using multiple identical-pitch connectors close together, the peg ensures all 42 contacts align correctly on the first insertion, avoiding reversed-polarity damage to downstream circuits. This is especially important in backplane assemblies or test fixtures where 180-degree connector reversal could destroy sensitive ICs connected to the 21-position dual-row interface.
For a right-angle board-to-cable interface, how does the horizontal (H) configuration of TFM-121-01-H-D-A-P-TR reduce enclosure height?
The horizontal (H) through-hole orientation means the 42 contact pins exit parallel to the PCB surface rather than perpendicular, so the mating cable exits horizontally from the board edge. This reduces the height of the connector above the PCB to approximately 3 mm to 5 mm versus 8 mm to 12 mm for a vertical configuration, enabling use in flat enclosures with internal heights below 15 mm while still accommodating standard 1.27 mm pitch flat cable assemblies.
Is TFM-121-01-H-D-A-P-TR a suitable choice when a design may need to increase pin count later, and what scaling options exist?
The TFM-121-01-H-D-A-P-TR with 42 contacts at 0.050" (1.27 mm) pitch belongs to SAMTEC's scalable Tiger Eye TFM series, which offers position counts from 2 to 50 or more per row in dual-row configurations. Upgrading to a higher position count requires only a PCB footprint change and a different TFM part number, with no change to the 1.27 mm pitch grid or mating connector family, allowing future hardware revisions to add 10 to 20 additional signal pairs without redesigning the connector ecosystem.
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