JST Sales America Inc., ACHF series, Board to Cable/Wire header, 4 positions, 1.20mm pitch, Surface Mount Right Angle, shrouded 3-wall, detent lock, gold mating finish, 2.5A, 50V, UL94 V-0.
| Parameter | Value |
|---|---|
| Series | ACHF |
| Type | Male Blade |
| Mounting | Surface Mount, Right Angle |
| Connector type | Header |
| Fastening type | Detent Lock |
| Voltage rating | 50V |
| Current rating | 2.5A |
| Operating temperature | -25°C~85°C |
| Contact material | Copper Alloy |
| Insulation color | Black |
| Insulation height | 0.056\" (1.43mm) |
| Insulation material | Polymer |
| Parameter | Value |
|---|---|
| Material flammability rating | UL94 V-0 |
| Style | Board to Cable/Wire |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Features | Solder Retention |
| Shrouding | Shrouded - 3 Wall |
| Termination | Solder |
| Contact shape | Rectangular |
| Rows | 1 |
| Pitch | 0.047\" (1.20mm) |
| Positions | 4 |
| Contact finish - mating | Gold |
The BM04B-ACHFKS-GACN-ETF(LF)(SN): That pitch drives the PCB footprint: the contact pads are spaced 1.20 mm apart centre-to-centre.
If the design can drop to 3 positions, those are a valid BOM alternative.
The mating half is a JST ACHF series receptacle housing that accepts the corresponding crimp terminals. The detent lock on this header engages with the matching latch on the receptacle. Confirm the exact receptacle part number from the ACHF series datasheet for the correct circuit count and wire gauge.
Yes, the fastening type is a detent lock. It provides an audible and tactile click when the mating receptacle is fully seated, giving positive retention against accidental disconnection in moderate-vibration applications.