MK 21 4

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Fischer Elektronik

0.635 MM AND UP TO 0.85 MM

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MK 21 4

Active

Fischer Elektronik

0.635 MM AND UP TO 0.85 MM

Deep-Dive with AI

DocumentsDatasheet

Specifications Pricing Series Description Documents

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Bulk	10	$ 0.67

Description

General part information

- Series

4 Position Header Connector 0.100" (2.54mm) Through Hole Gold

Documents

Technical documentation and resources

Datasheet

Technical Specifications

Parameters and characteristics commom to parts in this series

Specification	MK 21 4	- Series

Connector Type	Header	Header
Contact Finish - Mating	Gold	Gold
Contact Finish - Post	Tin	Tin, Gold
Contact Finish Thickness - Mating	29.5 Áin	10 - 29.5 Áin
Contact Finish Thickness - Mating	0.75 Ám	0.25 - 0.75 Ám
Contact Finish Thickness - Mating	-	4 µm
Contact Finish Thickness - Mating	-	236.2 µin
Contact Finish Thickness - Mating	-	157.5 µin
Contact Finish Thickness - Mating	-	6 µm
Contact Finish Thickness - Post	-	7.87 - 157.5 Áin
Contact Finish Thickness - Post	-	0.2 - 4 Ám
Contact Finish Thickness - Post	-	6 - 236.2 µm
Contact Finish Thickness - Post	-	4 - 157.5 µm
Contact Length - Post	-	2.5 - 3.3 mm
Contact Length - Post	-	0.126 - 0.515 in
Contact Length - Post	-	0.098 - 0.13 "
Contact Length - Post	-	13.08 mm
Contact Material	Beryllium Copper	Beryllium Copper, Bronze
Contact Type	Female Socket	Female Socket, Precision, Forked
Current Rating (Amps)	-	2 - 3 A
Insulation Height	-	7 mm
Insulation Height	-	0.276 in
Insulation Height	-	0.13 - 0.315 in
Insulation Height	-	3.3 - 8 mm
Material Flammability Rating	UL94 V-0	UL94 V-0
Mounting Type	Through Hole	Through Hole
Number of Positions	4	1 - 72
Number of Positions	-	16
Number of Positions Loaded	4	2 - 72
Number of Positions Loaded	-	All
Number of Positions Loaded	-	1 - 58
Number of Rows	1	1 - 2
Operating Temperature [Max]	163 ░C	163 - 200 ░C
Operating Temperature [Min]	-40 °C	-40 °C
Pitch - Mating	0.1 in	0.1 in
Pitch - Mating	2.54 mm	2.54 mm
Pitch - Mating	-	0.079 in
Pitch - Mating	-	2 mm
Row Spacing - Mating	-	2.54 mm
Row Spacing - Mating	-	0.1 in
Row Spacing - Mating	-	0.079 in
Row Spacing - Mating	-	2 mm
Termination	Solder	Solder, Press-Fit
Voltage Rating	150 VDC	100 - 150 VDC

- Series

FOR 0.635 MM AND UP TO 0.85 MM

...

Part	Pitch - Mating	Pitch - Mating	Contact Finish - Post	Contact Finish Thickness - Mating	Contact Finish Thickness - Mating	Material Flammability Rating	Number of Positions	Contact Material	Contact Type	Number of Positions Loaded	Row Spacing - Mating [x]	Row Spacing - Mating [x]	Number of Rows	Contact Finish - Mating	Connector Type	Termination	Mounting Type	Operating Temperature [Min]	Operating Temperature [Max]	Voltage Rating	Contact Finish Thickness - Post	Contact Finish Thickness - Post	Current Rating (Amps)	Contact Length - Post	Contact Length - Post [x]	Insulation Height [z]	Insulation Height [z]	Number of Positions Loaded
Fischer Elektronik BL 6 38	0.1 in	2.54 mm	Tin	29.5 Áin	0.75 Ám	UL94 V-0	38	Beryllium Copper	Female Socket	38	2.54 mm	0.1 in	2	Gold	Header	Solder	Through Hole	-40 °C	163 ░C	150 VDC
Fischer Elektronik BL 7 23	0.1 in	2.54 mm	Tin	29.5 Áin	0.75 Ám	UL94 V-0	23	Beryllium Copper	Female Socket	23			1	Gold	Header	Solder	Through Hole	-40 °C	163 ░C	150 VDC
Fischer Elektronik BL 3 6 Z	0.1 in	2.54 mm				UL94 V-0	6		Female Socket				1		Header	Solder	Through Hole	-40 °C	200 °C	125 VAC	7.87 Áin	0.2 Ám
Fischer Elektronik BL 1 7 Z	0.1 in	2.54 mm				UL94 V-0	7		Female Socket	7			1		Header	Solder	Through Hole	-40 °C	200 °C	125 VAC	7.87 Áin	0.2 Ám
Fischer Elektronik MK 21 4	0.1 in	2.54 mm	Tin	29.5 Áin	0.75 Ám	UL94 V-0	4	Beryllium Copper	Female Socket	4			1	Gold	Header	Solder	Through Hole	-40 °C	163 ░C	150 VDC
Fischer Elektronik BL 3 4 Z	0.1 in	2.54 mm				UL94 V-0	4		Female Socket	4			1		Header	Solder	Through Hole	-40 °C	200 °C	125 VAC	7.87 Áin	0.2 Ám
Fischer Elektronik BL 9 29	0.1 in	2.54 mm	Tin	29.5 Áin	0.75 Ám	UL94 V-0	29	Beryllium Copper	Female Socket	29			1	Gold	Header	Solder	Through Hole	-40 °C	163 ░C	150 VDC
Fischer Elektronik BL 8 50	0.1 in	2.54 mm	Tin	29.5 Áin	0.75 Ám	UL94 V-0	50	Beryllium Copper	Female Socket	50	2.54 mm	0.1 in	2	Gold	Header	Solder	Through Hole	-40 °C	163 ░C	150 VDC
Fischer Elektronik BL 7 6	0.1 in	2.54 mm	Tin	29.5 Áin	0.75 Ám	UL94 V-0	6	Beryllium Copper	Female Socket				1	Gold	Header	Solder	Through Hole	-40 °C	163 ░C	150 VDC
Fischer Elektronik BL 8 32	0.1 in	2.54 mm	Tin	29.5 Áin	0.75 Ám	UL94 V-0		Beryllium Copper	Precision		2.54 mm	0.1 in	2	Gold	Header	Solder	Through Hole	-40 °C	163 ░C	150 VDC	157.5 Áin	4 Ám	3 A	3.2 mm	0.126 in	7 mm	0.276 in	All