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Connectors / Headers and Edge Type Connectors / 51021-0400
Datasheets
51021-0400 by: Molex

Board Connector, 4 Contact(s), 1 Row(s), Female, Straight, 0.049 inch Pitch, Crimp Terminal, Locking, Receptacle,

Part Details for 51021-0400 by Molex

Results Overview of 51021-0400 by Molex

Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.

Applications Space Technology Aerospace and Defense Transportation and Logistics Renewable Energy Automotive Robotics and Drones

51021-0400 Information

51021-0400 by Molex is a Header and Edge Type Connector.
Headers and Edge Type Connectors are under the broader part category of Connectors.

Connectors are devices that join electrical termination points to form circuits. With various types designed for specific functions like data, power, or signal transmission, choosing the right connector is essential for compatibility and device performance. Read more about Connectors on our Connectors part category page.

Available Datasheets

Part # Manufacturer Description Datasheet
BQ51021YFPT Texas Instruments 5-W (WPC) Single-Chip Wireless Power Receiver with I<sup>2</sup>C 42-DSBGA -40 to 125
BQ51021YFPR Texas Instruments 5-W (WPC) Single-Chip Wireless Power Receiver with I<sup>2</sup>C 42-DSBGA -40 to 125
TPS60400DBVR Texas Instruments 60mA Charge Pump Voltage Inverter with Variable Switching Frequency 5-SOT-23 -40 to 85

Price & Stock for 51021-0400

Part # Distributor Description Stock Price Buy
DISTI # 38C9871
Newark Connector Housing, Rcpt, 4Pos, Product Range:Picoblade 51021 Series, Gender:Receptacle, No. Of Positions:4Positions, Pitch Spacing:1.25Mm, For Use With:Molex Picoblade 50058 & 50079 Series Socket Contacts, Contact Termination:Crimp Rohs Compliant: Yes |Molex 51021-0400 (Alternate Part Number: 800753575615 RoHS: Compliant Min Qty: 1 Package Multiple: 1 Date Code: 0 Container: Bulk 188795
  • 1 $0.2550
  • 10 $0.1450
  • 25 $0.1400
  • 50 $0.1350
  • 100 $0.1300
  • 250 $0.1250
  • 500 $0.1210
$0.1210 / $0.2550 Buy Now
DISTI # 26AC8131
Newark 1.25 Wtb Rec Hsg 4Ckt Rohs Compliant: Yes |Molex 51021-0400 (Alternate Part Number: 800753575615 RoHS: Compliant Min Qty: 2000 Package Multiple: 1 Date Code: 0 Container: Bulk 0
  • 250 $0.1390
$0.1390 Buy Now
DISTI # 0510210400
Avnet Americas Conn Wire to Board Housing Receptacle 4/5 POS 1.25mm ST Cable Mount - Bulk (Alt: 0510210400) RoHS: Not Compliant Min Qty: 2000 Package Multiple: 1 Lead time: 9 Weeks, 0 Days Container: Bulk 17990
  • 2,000 $0.1100
  • 2,100 $0.1081
  • 4,100 $0.0967
  • 10,000 $0.0824
  • 20,000 $0.0809
$0.0809 / $0.1100 Buy Now
DISTI # 38C9871
Avnet Americas Conn Wire to Board Housing Receptacle 4 POS 1.25mm ST Cable Mount - Bulk (Alt: 38C9871) RoHS: Compliant Min Qty: 1 Package Multiple: 1 Lead time: 68 Weeks, 3 Days Container: Bulk 188795 Partner Stock
  • 1 $0.2020
  • 10 $0.1420
  • 25 $0.1360
  • 50 $0.1290
  • 100 $0.1230
$0.1230 / $0.2020 Buy Now
DISTI # 538-51021-0400
Mouser Electronics Headers & Wire Housings RECEPTACLE 4 POS RoHS: Compliant 157283
  • 1 $0.1900
  • 10 $0.1610
  • 25 $0.1440
  • 100 $0.1320
  • 250 $0.1180
  • 1,000 $0.1100
  • 2,000 $0.0990
  • 10,000 $0.0980
  • 20,000 $0.0960
$0.0960 / $0.1900 Buy Now
DISTI # 70190897
RS Hsg, Wire to Wire & Wire to Board, Cable Socket,4 Cont, PicoBlade/51021 Series Min Qty: 1 Package Multiple: 1 Lead time: 8 Weeks, 0 Days Container: Bulk 1758
  • 1 $0.1920
  • 100 $0.1630
  • 250 $0.1540
  • 500 $0.1460
  • 1,000 $0.1380
$0.1380 / $0.1920 Buy Now
Onlinecomponents.com Conn Housing F 4 POS 1.25mm Crimp ST Cable Mount PicoBlade™ Bag RoHS: Compliant 324830 In Stock
  • 650 $0.1085
  • 3,500 $0.0971
  • 7,100 $0.0961
  • 14,300 $0.0946
  • 150,000 $0.0937
$0.0937 / $0.1085 Buy Now
Bristol Electronics   Min Qty: 4 7491
  • 4 $1.3162
  • 17 $0.8555
  • 60 $0.4936
  • 204 $0.4212
  • 441 $0.3685
  • 1,046 $0.3422
$0.3422 / $1.3162 Buy Now
Quest Components HEADER CONNECTOR,CABLE MNT,PLUG,4 CONTACTS,SKT,0.049 PITCH 108928
  • 1 $0.4500
  • 8,890 $0.0788
  • 20,318 $0.0675
$0.0675 / $0.4500 Buy Now
Quest Components HEADER CONNECTOR,CABLE MNT,PLUG,4 CONTACTS,SKT,0.049 PITCH 11288
  • 1 $0.1800
  • 2,084 $0.0780
  • 7,693 $0.0720
$0.0720 / $0.1800 Buy Now
Quest Components HEADER CONNECTOR,CABLE MNT,PLUG,4 CONTACTS,SKT,0.049 PITCH 4416
  • 1 $1.7550
  • 1,754 $0.4388
  • 3,420 $0.3861
$0.3861 / $1.7550 Buy Now
Quest Components HEADER CONNECTOR,CABLE MNT,PLUG,4 CONTACTS,SKT,0.049 PITCH 1926
  • 1 $1.2500
  • 321 $0.5000
  • 1,601 $0.4375
$0.4375 / $1.2500 Buy Now
Quest Components HEADER CONNECTOR,CABLE MNT,PLUG,4 CONTACTS,SKT,0.049 PITCH 568
  • 1 $0.7000
  • 30 $0.2100
  • 239 $0.1400
$0.1400 / $0.7000 Buy Now
Quest Components HEADER CONNECTOR,CABLE MNT,PLUG,4 CONTACTS,SKT,0.049 PITCH 568
  • 1 $0.7000
  • 30 $0.2100
  • 239 $0.1400
$0.1400 / $0.7000 Buy Now
DISTI # 51021-0400
TTI Headers & Wire Housings RECEPTACLE 4 POS RoHS: Compliant pbFree: Pb-Free Min Qty: 41 Package Multiple: 1 Container: Bulk Americas - 147600
In Stock
  • 41 $0.1240
  • 50 $0.1180
  • 100 $0.1150
  • 250 $0.1130
  • 500 $0.1090
  • 2,000 $0.0980
  • 4,200 $0.0960
$0.0960 / $0.1240 Buy Now
DISTI # MX-51021-0400
TME Connector: wire-wire/PCB, plug, female, PicoBlade™, 1.25mm, PIN: 4 Min Qty: 1 197305
  • 1 $0.2240
  • 10 $0.1190
  • 100 $0.0930
  • 500 $0.0770
  • 2,000 $0.0630
$0.0630 / $0.2240 Buy Now
DISTI # MOL51021-0400
Interstate Connecting Components 1.25 WTB REC HSG 4CKT 16641
  • 1 $0.1155
  • 1,700 $0.0972
  • 4,200 $0.0942
  • 8,200 $0.0928
  • 16,400 $0.0914
$0.0914 / $0.1155 Buy Now
Master Electronics Conn Housing F 4 POS 1.25mm Crimp ST Cable Mount PicoBlade™ Bag RoHS: Compliant 324830 In Stock
  • 650 $0.1085
  • 3,500 $0.0971
  • 7,100 $0.0961
  • 14,300 $0.0946
  • 150,000 $0.0937
$0.0937 / $0.1085 Buy Now
Vyrian Connectors 158778
RFQ

Part Details for 51021-0400

51021-0400 Part Data Attributes

Parametric Data
51021-0400 Molex
Buy Now Datasheet
Compare Parts:
51021-0400 Molex Board Connector, 4 Contact(s), 1 Row(s), Female, Straight, 0.049 inch Pitch, Crimp Terminal, Locking, Receptacle,
Pbfree Code Yes
Rohs Code Yes
Part Life Cycle Code Active
Ihs Manufacturer MOLEX LLC
Reach Compliance Code compliant
ECCN Code EAR99
HTS Code 8536.69.40.40
Factory Lead Time 68 Weeks, 3 Days
Samacsys Manufacturer Molex
Additional Feature COMPATIBLE CONTACTS: 50079-8000; 50058-8000; 50079-8100; 50058-8100
Body Breadth 0.126 inch
Body Depth 0.156 inch
Body Length 0.266 inch
Body/Shell Style RECEPTACLE
Connector Type BOARD CONNECTOR
Contact Finish Mating NOT SPECIFIED
Contact Finish Termination NOT APPLICABLE
Contact Gender FEMALE
Contact Material NOT SPECIFIED
Contact Pattern RECTANGULAR
Contact Resistance 20 mΩ
Contact Style SQ PIN-SKT
DIN Conformance NO
Dielectric Withstanding Voltage 353VAC V
Durability 30 Cycles
Filter Feature NO
IEC Conformance NO
Insulation Resistance 100000000 Ω
Insulator Color NATURAL
Insulator Material POLYBUTYLENE TEREPHTHALATE
MIL Conformance NO
Mating Contact Pitch 0.049 inch
Mating Information MULTIPLE MATING PARTS AVAILABLE
Mixed Contacts NO
Mounting Option 1 LOCKING
Mounting Type CABLE
Number Of Connectors ONE
Number of Rows Loaded 1
Operating Temperature-Max 105 °C
Operating Temperature-Min -40 °C
Option GENERAL PURPOSE
Polarization Key POLARIZED HOUSING
Rated Current (Signal) 1 A
Reference Standard UL
Termination Type CRIMP
Total Number of Contacts 4
UL Flammability Code 94V-0
Wire Size-Max 26 AWG
Wire Size-Min 32 AWG

Alternate Parts for 51021-0400

This table gives cross-reference parts and alternative options found for 51021-0400. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of 51021-0400, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.

Part Number Manufacturer Composite Price Description Compare
0510210400 Molex $0.1155 Board Connector, 4 Contact(s), 1 Row(s), Female, Straight, Crimp Terminal, Receptacle, ROHS AND REACH COMPLIANT 51021-0400 vs 0510210400

51021-0400 Related Parts

51021-0400 Frequently Asked Questions (FAQ)

  • The recommended torque for the screw terminals is 0.5-1.5 Nm (4.4-13.4 in-lbs).

  • Yes, the 51021-0400 is designed to withstand vibrations and can be used in applications with moderate to high vibration levels.

  • The operating temperature range for the 51021-0400 is -40°C to 105°C (-40°F to 221°F).

  • Yes, the 51021-0400 is designed for outdoor use and can withstand exposure to moisture and humidity.

  • No, the 51021-0400 is designed for use with wire gauges 20 AWG to 24 AWG. Using a larger wire gauge may not provide a secure connection.

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