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Connectors / Headers and Edge Type Connectors / 51021-0300
Datasheets
51021-0300 by: Molex

Board Connector, 3 Contact(s), 1 Row(s), Female, Straight, 0.049 inch Pitch, Crimp Terminal, Locking, Receptacle,

Part Details for 51021-0300 by Molex

Results Overview of 51021-0300 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

51021-0300 Information

51021-0300 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.

Price & Stock for 51021-0300

Part # Distributor Description Stock Price Buy
DISTI # 80AH0290
Newark Picoblade1.25 Rec Hsg 3P Rohs Compliant: Yes |Molex 51021-0300 (Alternate Part Number: 800753575608 RoHS: Compliant Min Qty: 1 Package Multiple: 1 Date Code: 0 Container: Bulk 78536
  • 1 $0.2060
  • 10 $0.1690
  • 25 $0.1600
  • 50 $0.1480
  • 100 $0.1390
  • 250 $0.1310
  • 500 $0.1230
  • 1,000 $0.1070
$0.1070 / $0.2060 Buy Now
DISTI # 57H2315
Newark Connector Housing, Rcpt, 3Pos, Product Range:Picoblade 51021 Series, Gender:Receptacle, No. Of Positions:3Positions, Pitch Spacing:1.25Mm, For Use With:Molex Picoblade 50058 & 50079 Series Socket Contacts, Colour:Natural Rohs Compliant: Yes |Molex 51021-0300 (Alternate Part Number: 800753575608 RoHS: Compliant Min Qty: 1 Package Multiple: 1 Date Code: 0 Container: Bulk 19205
  • 1 $0.0610
  • 10 $0.0610
  • 25 $0.0610
  • 50 $0.0610
  • 100 $0.0610
  • 250 $0.0610
  • 500 $0.0610
  • 1,000 $0.0610
$0.0610 Buy Now
DISTI # 0510210300
Avnet Americas Conn Housing RCP 3 POS 1.25mm Crimp ST Cable Mount Bag - Bulk (Alt: 0510210300) RoHS: Not Compliant Min Qty: 1 Package Multiple: 1 Lead time: 9 Weeks, 0 Days Container: Bulk 78556
  • 1 $0.0604
  • 10 $0.0594
  • 30 $0.0584
  • 50 $0.0574
  • 100 $0.0568
$0.0568 / $0.0604 Buy Now
DISTI # 0510210300
Avnet Americas Conn Housing RCP 3 POS 1.25mm Crimp ST Cable Mount Bag - Bulk (Alt: 0510210300) RoHS: Not Compliant Min Qty: 1 Package Multiple: 1 Lead time: 9 Weeks, 0 Days Container: Bulk 78511
  • 1 $0.0604
  • 10 $0.0594
  • 30 $0.0584
  • 50 $0.0574
  • 100 $0.0568
$0.0568 / $0.0604 Buy Now
DISTI # 57H2315
Avnet Americas Connector Housing Wire to Board Receptacle 3 Position 1.25 mm Straight Cable Mount Bag - Bulk (Alt: 57H2315) RoHS: Compliant Min Qty: 1 Package Multiple: 1 Lead time: 63 Weeks, 3 Days Container: Bulk 19239 Partner Stock
  • 1 $0.1800
  • 10 $0.1300
  • 25 $0.1250
  • 50 $0.1200
  • 100 $0.1140
$0.1140 / $0.1800 Buy Now
DISTI # 57H2315
Avnet Americas Connector Housing Wire to Board Receptacle 3 Position 1.25 mm Straight Cable Mount Bag - Bulk (Alt: 57H2315) RoHS: Compliant Min Qty: 1 Package Multiple: 1 Lead time: 63 Weeks, 3 Days Container: Bulk 19239 Partner Stock
  • 1 $0.1800
  • 10 $0.1300
  • 25 $0.1250
  • 50 $0.1200
  • 100 $0.1140
$0.1140 / $0.1800 Buy Now
DISTI # 70191028
RS PICOBLADE Series 1.25mm Pitch 3 Way 1 Row Female Straight PCB Housing 51021 Min Qty: 1 Package Multiple: 1 Lead time: 64 Weeks, 0 Days Container: Bulk 907
  • 1 $0.1620
  • 100 $0.1370
  • 250 $0.1290
  • 500 $0.1230
  • 1,000 $0.1160
$0.1160 / $0.1620 Buy Now
Bisco Industries   32586
  • 10,000 $0.0750
$0.0750 Buy Now
Bristol Electronics   22104
RFQ
DISTI # MX-51021-0300
TME Connector: wire-wire/PCB, plug, female, PicoBlade™, 1.25mm, PIN: 3 Min Qty: 1 14507
  • 1 $0.1560
  • 10 $0.1000
  • 100 $0.0810
  • 500 $0.0730
  • 675 $0.0720
  • 1,000 $0.0710
  • 2,000 $0.0690
  • 10,000 $0.0650
$0.0650 / $0.1560 Buy Now
DISTI # MOL51021-0300
Interstate Connecting Components 3CKT RECEPTACLE HOUSING 10088
  • 1 $0.0911
  • 2,100 $0.0766
  • 5,200 $0.0743
  • 10,400 $0.0732
  • 20,800 $0.0721
$0.0721 / $0.0911 Buy Now
Velocity Electronics Our Stock 110
RFQ
New Advantage Corporation ConnHousingRCP3POS1.25mmCrimpSTCableMountBag,PicoBladeRcptH RoHS: Compliant Min Qty: 1 Package Multiple: 2000 3000
  • 4,000 $0.0586
$0.0586 Buy Now
Vyrian Connectors 96369
RFQ

Part Details for 51021-0300

51021-0300 Part Data Attributes

Parametric Data
51021-0300 Molex
Buy Now Datasheet
Compare Parts:
51021-0300 Molex Board Connector, 3 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
Factory Lead Time 63 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 0.217 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
DIN Conformance NO
Filter Feature NO
IEC Conformance NO
Insulation Resistance 100000000 Ω
Insulator Material POLYBUTYLENE
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 85 °C
Operating Temperature-Min -40 °C
Option GENERAL PURPOSE
Reference Standard UL
Termination Type CRIMP
Total Number of Contacts 3
UL Flammability Code 94V-0

Alternate Parts for 51021-0300

This table gives cross-reference parts and alternative options found for 51021-0300. 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 51021-0300, 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
10114826-00003LF Amphenol Communications Solutions $0.0159 1.25mm Wire to Board Housing, 3 Positions 51021-0300 vs 10114826-00003LF
51021-0330 Molex Check for Price Board Connector, 3 Contact(s), 1 Row(s), Female, 0.049 inch Pitch, Crimp Terminal, Locking, Receptacle, 51021-0300 vs 51021-0330
0510210300 Molex $0.0911 Board Connector, 3 Contact(s), 1 Row(s), Female, Straight, Crimp Terminal, Receptacle, ROHS COMPLIANT 51021-0300 vs 0510210300
Part Number Manufacturer Composite Price Description Compare
50-57-9203 Molex $0.2177 Board Connector, 3 Contact(s), 1 Row(s), Female, Straight, 0.1 inch Pitch, Crimp Terminal, Black Insulator, Plug, 51021-0300 vs 50-57-9203
501939-0333 Molex Check for Price Board Connector, 3 Contact(s), 1 Row(s), Female, 0.039 inch Pitch, Locking, Receptacle, ROHS COMPLIANT 51021-0300 vs 501939-0333
51065-0304 Molex Check for Price Board Connector, 3 Contact(s), 1 Row(s), Female, 0.079 inch Pitch, Crimp Terminal, Locking, Blue Insulator, Receptacle 51021-0300 vs 51065-0304
W-A2403-IN#01 SMK Corporation Check for Price Board Connector, 3 Contact(s), 1 Row(s), Female, 0.079 inch Pitch, Crimp Terminal, Natural Insulator, Socket, 51021-0300 vs W-A2403-IN#01
2CH-F-03 Adam Technologies Inc Check for Price Board Connector, 3 Contact(s), 1 Row(s), Female, 0.079 inch Pitch, Crimp Terminal, Locking, Natural Insulator, Plug 51021-0300 vs 2CH-F-03
43061-0014 Molex Check for Price Board Connector, 3 Contact(s), 1 Row(s), Female, 0.156 inch Pitch, Crimp Terminal, White Insulator, Receptacle, 51021-0300 vs 43061-0014
501939-0339 Molex Check for Price Board Connector, 3 Contact(s), 1 Row(s), Female, 0.039 inch Pitch, Locking, Receptacle, ROHS COMPLIANT 51021-0300 vs 501939-0339
DH1-H-3 Singatron Enterprises Co Check for Price Board Connector, 3 Contact(s), 1 Row(s), Female, 0.1 inch Pitch, Plug 51021-0300 vs DH1-H-3
87369-0300 Molex Check for Price Board Connector, 3 Contact(s), 1 Row(s), Female, 0.079 inch Pitch, Crimp Terminal, Receptacle, 51021-0300 vs 87369-0300
51065-0302 Molex Check for Price Board Connector, 3 Contact(s), 1 Row(s), Female, 0.079 inch Pitch, Crimp Terminal, Locking, Red Insulator, Receptacle, 51021-0300 vs 51065-0302

51021-0300 Related Parts

51021-0300 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 51021-0300 is designed to withstand vibrations and can be used in applications with moderate to high vibration levels.

  • The operating temperature range for the 51021-0300 is -40°C to 105°C (-40°F to 221°F).

  • Yes, the 51021-0300 is designed for outdoor use and can withstand exposure to moisture and humidity.

  • No, the 51021-0300 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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