TSW-212-21-G-Q SAMTEC Connector (Header, Vertical) In Stock
SAMTEC TSW-212-21-G-Q is a 24-way vertical through-hole male header with 5.08 mm pitch, gold over nickel contact finish, and a 2.3 inch body length, designed for reliable board-to-board or board-to-wire connections.
- Manufacturer
- SAMTEC
- Package
- Header, Vertical
- Pin Count
- 24
- Lifecycle
- ACTIVE
- Datasheet
- TSW-212-21-G-Q Datasheet PDF
- Category
- Connector
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 24-way vertical THT male header with 5.08 mm pitch enabling robust through-hole board interconnection in industrial and instrumentation designs
- Gold over nickel contact finish on both mating and termination surfaces ensuring low contact resistance and long mating cycle life
- 2.3 inch body length with 0.3 inch breadth and 0.1 inch depth providing a low-profile receptacle footprint on PCB
- RoHS-compliant lead-free construction with 10-year estimated end-of-life rating for extended lifecycle product designs
Applications
The SAMTEC TSW-212-21-G-Q is designed for through-hole board interconnection in test and measurement equipment, industrial control systems, and backplane wiring where a durable 5.08 mm pitch header is required. Its 24-way configuration supports multi-signal interfaces including digital I/O buses, power distribution, and mixed-signal connections in instrumentation chassis and embedded computing modules. The gold contact finish makes it appropriate for low-level signal applications such as analog sensor interfaces, where minimal contact resistance and oxidation resistance are essential for measurement accuracy.
Specifications
| Pbfree Code | Yes |
| YTEOL | 10 |
| Body Breadth | 0.3inch |
| Body Depth | 0.1inch |
| Body Length | 2.3inch |
| Body/Shell Style | RECEPTACLE |
| Connector Type | BOARD CONNECTOR |
| Contact Finish Mating | GOLD OVER NICKEL |
| Contact Finish Termination | Gold (Au) - with Nickel (Ni) barrier |
| Contact Gender | MALE |
| Contact Material | PHOSPHOR BRONZE |
| Contact Pattern | RECTANGULAR |
| Contact Style | SQ PIN-SKT |
| DIN Conformance | NO |
| Filter Feature | NO |
| IEC Conformance | NO |
| Insulator Color | BLACK |
| Insulator Material | POLYBUTYLENE TEREPHTHALATE |
| JESD-609 Code | e4 |
| MIL Conformance | NO |
| Mating Contact Pitch | 0.1inch |
| Mating Contact Row Spacing | 0.2inch |
| Mating Information | MULTIPLE MATING PARTS AVAILABLE |
| Mixed Contacts | NO |
| Mounting Option 1 | LOCKING |
| Mounting Style | STRAIGHT |
| Mounting Type | BOARD |
| Number Of Connectors | ONE |
| Number Of PCB Rows | 2 |
| Number of Rows Loaded | 2 |
| Option | GENERAL PURPOSE |
| PCB Contact Pattern | RECTANGULAR |
| PCB Contact Row Spacing | 5.08mm |
| Plating Thickness | 10u inch |
| Rated Current (Signal) | 5.2A |
| Reference Standard | UL |
| Terminal Length | 0.11inch |
| Terminal Pitch | 5.08mm |
| Termination Type | SOLDER |
| Total Number of Contacts | 24 |
| UL Flammability Code | 94V-0 |
| Package | Header, Vertical |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.40 |
| Country of Origin | USA |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Why is the 5.08 mm pitch of the TSW-212-21-G-Q preferred over 2.54 mm pitch headers in industrial wiring applications?
The 5.08 mm pitch provides wider spacing between contacts, accommodating larger wire gauges and reducing the risk of accidental bridging during hand assembly or field wiring. For the 24-way TSW-212-21-G-Q, this results in a 2.3 inch body length that allows reliable termination of heavier 18 to 24 AWG wires used in industrial I/O and power distribution wiring.
How does the gold over nickel contact finish of the TSW-212-21-G-Q benefit low-voltage signal applications?
Gold over nickel contact finish provides less than 10 milliohm contact resistance and resists oxidation even after hundreds of mating cycles. In low-voltage analog signal applications below 1 V, this low resistance prevents voltage drop errors and eliminates oxide-layer noise that would compromise measurement accuracy in sensor interfaces and data acquisition systems.
How many mating cycles can the TSW-212-21-G-Q header withstand and what does that mean for serviceability?
SAMTEC TSW-series headers with gold over nickel contacts are rated for a minimum of 100 mating cycles under standard test conditions. For a 24-way connector used in a test fixture or removable module, 100 cycles supports years of normal service in production test equipment or periodically upgraded systems without contact degradation.
What alternative SAMTEC header series should be evaluated when a lower-profile or surface-mount version of the TSW-212-21-G-Q is required?
When through-hole mounting is not practical, SAMTEC SSW series surface-mount receptacles or SSQ series offer comparable 2.54 mm or 2.0 mm pitch options with similar gold contact finishes. For the same 5.08 mm pitch in SMT format, SAMTEC HW or TSM series headers with SMT tails should be considered, with body lengths selected to match the 24-position requirement.
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