TIP121G is out of stock and can be placed on backorder.
Available Substitutes:

Direct


onsemi
In Stock: 1,000
Unit Price: $1.54000
Datasheet

Direct


STMicroelectronics
In Stock: 0
Unit Price: $0.97000
Datasheet
Bipolar (BJT) Transistor NPN - Darlington 80 V 5 A 2 W Through Hole TO-220
Image shown is a representation only. Exact specifications should be obtained from the product data sheet.

TIP121G

DigiKey Part Number
TIP121GOS-ND
Manufacturer
Manufacturer Part Number
TIP121G
Description
TRANS NPN DARL 80V 5A TO-220
Manufacturer Standard Lead Time
16 Weeks
Customer Reference
Detailed Description
Bipolar (BJT) Transistor NPN - Darlington 80 V 5 A 2 W Through Hole TO-220
Datasheet
 Datasheet
EDA/CAD Models
TIP121G Models
Product Attributes
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Category
Current - Collector Cutoff (Max)
500µA
Mfr
DC Current Gain (hFE) (Min) @ Ic, Vce
1000 @ 3A, 3V
Packaging
Tube
Power - Max
2 W
Part Status
Active
Operating Temperature
-65°C ~ 150°C (TJ)
Transistor Type
Mounting Type
Through Hole
Current - Collector (Ic) (Max)
5 A
Package / Case
TO-220-3
Voltage - Collector Emitter Breakdown (Max)
80 V
Supplier Device Package
TO-220
Vce Saturation (Max) @ Ib, Ic
4V @ 20mA, 5A
Base Product Number
Environmental & Export Classifications
Product Questions and Answers
Additional Resources
Substitutes (2)
Part NumberManufacturerQuantity AvailableDigiKey Part NumberUnit PriceSubstitute Type
TIP121TUonsemi1,0002832-TIP121TU-ND$1.54000Direct
TIP121STMicroelectronics0497-2537-5-ND$0.97000Direct
Available To Order
Factory Stock: 5,200
50 estimated in stock on 14-Dec-2026
Marketplace Stock: 1,350 View Now

This is stock that is available at the supplier which may be available to DigiKey upon receipt of order.

All prices are in USD
Tube
QuantityUnit PriceExt Price
1$1.55000$1.55
50$0.73320$36.66
100$0.65330$65.33
500$0.51300$256.50
1,000$0.46784$467.84
2,000$0.42986$859.72
5,000$0.38876$1,943.80
10,000$0.36913$3,691.30
Note: Due to DigiKey value-add services the packaging type may change when product is purchased at quantities beneath the standard package.
Tariff Status: Tariff may apply if shipping to the United States. Estimated tariff costs will be calculated and displayed in the shopping cart to help you assess potential expenses.

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1,350In Stock
Ships from Flip Electronics