iTechGuides is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases. Learn more
The Molex CMC 154-circuit compliant-pin header is 34763-0001. The 32-circuit solder-pin header is 64334-0100, and the 112-circuit solder-tail header is 64333-0100. These are different configurations, not interchangeable alternatives: confirm the mating receptacle and board-mount requirements against the current Molex drawing and your bill of materials before ordering.
Part numbers and mounting styles
| Circuits | Molex header part number | Mounting / termination | Mating receptacle references |
|---|---|---|---|
| 154 | 34763-0001 | Right-angle, three-pocket header with compliant-pin press-fit terminals | 64321-2011, 64321-2019, and 64320-1318 |
| 32 | 64334-0100 | Solder-pin header | 64319-3211 |
| 112 | 64333-0100 | Solder-tail header | 64319-3211, 64320-3319, and 64319-1218 |
Molex’s CMC family overview supplies the 32- and 112-circuit identities and mating references. Its product brochure and family materials identify the 154-circuit header and its mating receptacles. See the Molex brochure 987650-5254 and the Molex CMC family overview.
What distinguishes the 154-circuit compliant-pin header
Molex describes 34763-0001 as a “154-circuit, 3-pocket, right-angle header with compliant pin terminals for solder-free processing.” Its Eye-of-Needle press-fit terminals are intended for established press-fit assembly processes, rather than soldering the header pins to the board.
Do these 3 things before closing this tab:
1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitchesThe Molex brochure specifies 120 terminals at 0.635 mm, 24 at 1.50 mm, and 10 at 2.80 mm, totaling 154 terminals. It lists a 250 V AC rating and an operating range of -40 to +125 °C. The listed currents are 2.5 A, 12 A, and 21 A for the respective terminal sizes under the brochure’s stated temperature-rise test condition. These are manufacturer-published specifications for the described configuration, not independent test results; consult the drawing for the applicable conditions and design limits.
Molex positions the compliant-pin design for large engine control units and cites heavy-duty agricultural equipment as an application context. That guidance does not establish that any particular vehicle or ECU uses this part.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How to confirm compatibility before ordering
- Match the exact header number. Search for the full ordering number—34763-0001, 64334-0100, or 64333-0100—not just “CMC header.”
- Verify the mating receptacle. For 34763-0001, check whether the assembly calls for 64321-2011, 64321-2019, or 64320-1318. For the 32-circuit version, the family overview names 64319-3211. For the 112-circuit version, it lists 64319-3211, 64320-3319, and 64319-1218.
- Check board assembly requirements. The 154-circuit part uses compliant-pin press-fit mounting. The 32- and 112-circuit parts are identified as solder-pin and solder-tail headers, respectively; confirm the board footprint and assembly process in the applicable drawing.
- Confirm the current revision and procurement details. Use the latest Molex drawing and your bill of materials to verify the configuration. The catalog references identify parts, but do not establish live distributor inventory or price.
Molex’s page for receptacle 64320-3319 identifies it as a sealed 48-circuit CMC receptacle and lists use with the 112-circuit header family. That page also lists cavity plugs, CMC terminals, and application tools, including a continuity test pen assembly and unlocking tool. These are service or assembly items to assess for the particular design, not universal requirements.
Quick Recap
Rank #2
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
Free tools Windows power users keep installed
One-click scans. No signup required.
