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 0705430020 SL 70543 Header — 21-Circuit, 0.100" Pitch
MPN0705430020
Active
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.
$6.8446Ref. price · indicative, final on quote
Source DocumentedChannel stated on listing & quote
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Independent supplier — new & surplus connector stock· Listing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Series | SL 70543 |
| Type | Male Pin |
| Mounting | 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 |
All specifications
| Parameter | Value |
|---|---|
| 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) |
Product details
Frequently asked questions
What is the pitch of Molex 0705430020?
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.
Is Molex 0705430020 RoHS compliant?
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.
What is the temperature rating of the SL 70543 header?
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.