All prices are in US dollars.
Digi-Key Part Number 3M4421B1DKR-ND
Price Break Unit Price Extended Price
1 2.17000 2.17
10 1.96700 19.67
25 1.84680 46.17
50 1.76660 88.33
100 1.68630 168.63
Quantity Available Digi-Key Stock: 5,194
Can ship immediately

Manufacturer Part Number


Lead Free Status / RoHS Status Lead free / RoHS Compliant

A $7.00 reeling fee will be applied to each reel ordered. Digi-Reels are a custom product and are non-cancelable and non-returnable.

Digi-Reel Pricing
Quantity Unit Price Extended Price

Quantity Item Number ? Customer Reference

When requested quantity exceeds displayed pricing table quantities, a lesser unit price may appear on your order.
You may submit a request for quotation on quantities which are greater than those displayed in the pricing table.

Datasheets 8400 Series, Socket SMD Datasheet
8400 Series Spec
Product Photos 8444-21b1-rk-tr
Standard Package ? 1

Connectors, Interconnects


Sockets for ICs, Transistors

Series 8400
Packaging ? Digi-Reel®?
Number of Positions or Pins (Grid) 44 (4 x 11)
Pitch - Mating 0.050" (1.27mm)
Contact Finish - Mating Tin
Contact Finish Thickness - Mating 160µin (4.06µm)
Contact Material - Mating Copper Alloy
Mounting Type Surface Mount
Features Closed Frame
Termination Solder
Pitch - Post 0.050" (1.27mm)
Contact Finish - Post Tin
Contact Finish Thickness - Post 160µin (4.06µm)
Contact Material - Post Copper Alloy
Housing Material Polybutylene Terephthalate (PBT), Glass Filled
Operating Temperature -40°C ~ 105°C
Termination Post Length 0.132" (3.35mm)
Material Flammability Rating UL94 V-0
Current Rating 1A
Contact Resistance 15 mOhm
Online Catalog 8400 Series
Other Names 3M4421B1DKR
Alternate Package | This part is also available in the following packaging:
Digi-Key Part Number Manufacturer Part Number Manufacturer Packaging Quantity Available Unit Price Minimum Quantity
3M4421B1TR-ND 8444-21B1-RK-TR 3M Tape & Reel (TR)? 5,040 - Immediate
1.38700 360
3M4421B1CT-ND 8444-21B1-RK-TR 3M Cut Tape (CT)? 5,194 - Immediate
2.17000 1

Tape & Reel, Cut Tape and Digi-Reels are all derived from the same manufacturer’s part number. Inventory from Tape & Reel is used to fulfill Cut Tape and Digi-Reel orders and will impact the total quantity available.

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16:34:16 5/4/2016