21 Circuits on 0.100" Pitch — Board Fit and Routing
Gold Mating Finish and Latch Holder for Repeated Mate Cycles
This is a practical advantage in automotive, industrial, or medical equipment where the connector sees mechanical shock.

Molex SL 70543 series, 0705430020, single-row 21-circuit shrouded header, 0.100" (2.54 mm) pitch, through-hole solder termination, gold-plated mating contacts, latch holder fastening, UL94 V-0 housing.
| Parameter | Value |
|---|---|
| Series | SL 70543 |
| Gender | Male Pin |
| Mounting type | Through Hole |
| Connector type | Header |
| Fastening type | Latch Holder |
| Voltage rating | 250V |
| Operating temperature | -40°C ~ 105°C |
| Contact material | Phosphor Bronze |
| Insulation color | Black |
| Insulation height | 0.465\" (11.80mm) |
| Insulation material | Polyester, Glass Filled |
| Material flammability rating | UL94 V-0 |
| Style | Board to Cable/Wire |
| Package | Tube |
| Shrouding | Shrouded - 4 Wall |
| Termination | Solder |
| Applications | Automotive, General Purpose, Industrial, Medical |
| Contact shape | Square |
| Rows | 1 |
| Pitch | 0.100\" (2.54mm) |
| Positions | 21 |
| Contact finish - post | Tin |
| Contact length - post | 0.130\" (3.30mm) |
| Overall contact length | 0.470\" (11.94mm) |
| Contact finish - mating | Gold |
| Contact length - mating | 0.240\" (6.10mm) |
| Contact finish thickness - post | 74.8µin (1.90µm) |
| Contact finish thickness - mating | 15.0µin (0.38µm) |
This is a practical advantage in automotive, industrial, or medical equipment where the connector sees mechanical shock.
The pitch is 0.100" (2.54 mm). This is the standard 0.100-inch spacing that matches SL series receptacles and common ribbon cable pitch.
Yes, the part is RoHS compliant per Molex's standard compliance documentation. The contact finish includes tin on the post and gold on the mating surface, both RoHS-compatible materials.
This covers most indoor industrial and automotive cabin environments, though the upper limit means it should not be placed directly on a hot engine block or near a high-power resistor bank.