TMMH-147-01-H-5

FAQFrequently Asked Questions

• Can Samtec TMMH-147-01-H-5 be used to connect two PCBs with a 2 mm pitch? Samtec TMMH-147-01-H-5 is a 5-row, 235-position, 2 mm pitch through-hole male header intended for board-to-board or cable connections. A compatible mating connector must match the 2 mm pitch, 5-row geometry, contact arrangement, mating depth, and required board spacing; the product data does not specify a mated stacking height, so the assembled dimensions should be checked mechanically before layout release.
• How should I select the mating connector for Samtec TMMH-147-01-H-5? For Samtec TMMH-147-01-H-5, select a mating receptacle with compatible 2 mm pitch, row spacing, position count, contact interface, and mating height. Because this header is unshrouded and uses a push-pull mating style, the mating component and the enclosure should provide any required alignment, polarization, and retention features.
• Can Samtec TMMH-147-01-H-5 be cut down for a smaller connector position count? Samtec TMMH-147-01-H-5 is described as a cuttable header, so unused sections may be removed when the required termination and end geometry remain acceptable. After cutting, inspect the end for damaged contacts, exposed material, burrs, or reduced creepage and clearance, and confirm that the shortened part still fits the mating connector and enclosure.
• What PCB footprint should be used for Samtec TMMH-147-01-H-5? The Samtec TMMH-147-01-H-5 footprint should use a 2 mm grid with five rows and 235 plated through-holes, but the final hole diameter and pad dimensions must be based on Samtec's recommended land pattern and the PCB fabrication process. The 2.47 mm post length and 7.67 mm overall contact length also need to be checked against board thickness, solder fillets, keepouts, and nearby components.
• Is Samtec TMMH-147-01-H-5 suitable for automated wave or selective soldering? Samtec TMMH-147-01-H-5 uses through-hole solder termination and an LCP insulator with a UL94 V-0 flammability rating, which can be compatible with industrial soldering processes. The assembly profile, solder temperature, dwell time, board orientation, and thermal exposure should be validated against Samtec's process guidance because the supplied product data does not define a specific wave or selective-solder profile.
• Does Samtec TMMH-147-01-H-5 have a specified current or voltage rating? The supplied data does not list a current rating or voltage rating for Samtec TMMH-147-01-H-5. Power use therefore requires a contact-current and voltage review based on the mating connector, contact resistance, conductor heating, number of simultaneously loaded contacts, PCB copper, ambient temperature, and required creepage and clearance rather than relying on the 235-position count alone.
• Can Samtec TMMH-147-01-H-5 carry power and high-speed signals in the same connector? Samtec TMMH-147-01-H-5 may be used for mixed electrical functions only after the actual contact-current, insulation, crosstalk, impedance, and signal-integrity requirements have been verified. Its unshrouded 2 mm pin field does not provide a defined controlled-impedance structure, and the product data does not specify high-speed performance, so differential routing, return-current paths, pin assignment, and unused-pin treatment should be evaluated with the mating connector and operating frequency.
• How should I handle unused positions when designing around Samtec TMMH-147-01-H-5? Unused positions in Samtec TMMH-147-01-H-5 can be left unconnected, assigned to ground, or removed only when the mating and mechanical requirements permit it. Ground assignments can improve return-current continuity for signal interfaces, while leaving pins floating may be acceptable for isolated low-speed signals; the choice should follow the interface's EMC, creepage, and service requirements.
• Is Samtec TMMH-147-01-H-5 a drop-in replacement for a 2.54 mm TE Connectivity AMPMODU MTE header? Samtec TMMH-147-01-H-5 is not a drop-in replacement for a 2.54 mm TE Connectivity AMPMODU MTE header because the pitch, footprint, mating interface, row geometry, and often the retention features differ. Migrating from AMPMODU MTE requires a new PCB footprint, a compatible mating part, enclosure review, and electrical derating analysis even if the nominal position count appears similar.
• What should I verify when replacing another 2 mm header with Samtec TMMH-147-01-H-5? When replacing another 2 mm header with Samtec TMMH-147-01-H-5, compare the exact row count, position numbering, pin cross-section, mating contact style, post length, contact length, board thickness, solder-hole requirements, and mechanical retention. The Samtec part has five rows, gold-plated mating contacts, gold-plated posts with a thinner finish, and no specified stacking height, so an apparently similar connector may still change contact reliability, assembly fit, or mating force.
• Can Samtec TMMH-147-01-H-5 be used in equipment operating from -40°C to 105°C? Samtec TMMH-147-01-H-5 has a stated operating temperature range of -55°C to 125°C, so an ambient range of -40°C to 105°C is within the listed connector temperature limits. The complete assembly still needs validation for mating-contact derating, solder-joint fatigue, PCB expansion, vibration, contamination, and the temperature limits of the mating connector and surrounding materials.
• Is Samtec TMMH-147-01-H-5 suitable for long-term industrial equipment exposed to vibration or repeated service? Samtec TMMH-147-01-H-5 can be considered for industrial equipment when the through-hole solder joints, board support, mating retention, and connector alignment are designed for the expected vibration and service conditions. Its unshrouded construction does not inherently prevent lateral loading or accidental contact, and the push-pull connection should be tested for insertion cycles, cable forces, vibration, and fretting under the intended environmental conditions.