TIP121TU The On Semiconductor TIP121TU is an NPN Darlington transistor designed for general-purpose amplification and switching applications. It features a high DC current gain and a TO-220-3 package.
Mfr Part #:

TIP121TU

Available from 2 distributors
Mfr Name: On Semiconductor
On Semiconductor
The On Semiconductor TIP121TU is an NPN Darlington transistor designed for general-purpose amplification and switching applications. It features a high DC current gain and a TO-220-3 package.
Total Stock: 3,502 pcs
$ Price Range: $0.51

TIP121TU Available from 2 distributors

Authorised
Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
2,502 pcs
2502 pcs On Request 1 On Request On Request 11+ On Request On Request
Non-Authorised Inventory information
1,000 pcs
1000 pcs On Request 1 On Request On Request On Request On Request On Request

TIP121TU Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Base Current
Collector Current - Peak
Current
DC Current Gain (hFE) (Min) @ Ic, Vce
Industrial Grade
Medical Grade
Military Grade
Mounting Type
Operating Temperature
PD (Maximum @ Tc=25 °C)
PD Derate (Maximum @ Above 25 °C)
Pd (Maximum @ Ta=25 °C)
Power
Supplier Device Package
Thermal Resistance - Junction to Case
Thermal Resistance Junction-to-Ambient
Transistor Type
Unclamped inductive load energy
VCE(sat) (Maximum @ IC = 3.0 Adc)
VCE(sat) (Maximum @ IC = 5.0 Adc)
VCEO(sus) (Minimum @ IC = 100 mAdc, IB = 0)
Vce Saturation (Max) @ Ib, Ic
Voltage
hFE (Typical @ IC = 4.0 Adc)

TIP121TU Description

Short technical summary and product information.

The TIP121TU from On Semiconductor is a complementary silicon power transistor in a Darlington configuration. It is designed for general-purpose amplifier and low-speed switching applications.

 

Key electrical characteristics include a collector-emitter sustaining voltage (VCEO(sus)) of 80V, a continuous collector current (IC) of 5A, and a peak collector current of 8A. The device offers a high DC current gain (hFE) typically 2500 at 4.0 Adc, and a minimum gain of 1000 at 3A and 3V. The saturation voltage (VCE(sat)) is a maximum of 2Vdc at 3.0 Adc and 4Vdc at 5.0 Adc.

 

This transistor has a total power dissipation of 65W at TC=25°C and 2W at TA=25°C, with corresponding derating values. The operating and storage temperature range is -65°C to +150°C.

 

The TIP121TU is housed in a TO-220-3 package, suitable for through-hole mounting. It is RoHS3 compliant.

TIP121TU Quick Information

Product Type: NPN Darlington Transistor
Series: TIP12x
Canonical Name: TIP121TU NPN Darlington Transistor
Subcategory: Single

TIP121TU Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

TIP121TU Estimated Pricing

Qty Low High
1+ $0.51 $0.51

Estimated market price range - modelled values for guidance only, not live distributor offers.

TIP121TU Features

  • NPN Darlington silicon power transistor.
  • 80V collector-emitter sustaining voltage.
  • 5A continuous collector current.
  • High DC current gain (hFE) up to 2500.
  • TO-220-3 through-hole package.

TIP121TU Applications

  • Used in power switching circuits.
  • Suitable for motor control applications.
  • Ideal for solenoid and relay drivers.
  • Employed in high-gain amplifier stages.

TIP121TU FAQs

7 frequently asked questions generated from this part’s specifications.
What is the collector-emitter sustaining voltage?

80V minimum.

What is the continuous collector current rating?

5A.

What is the package type?

TO-220-3.

What is the operating temperature range?

-65°C to +150°C.

What is the DC current gain?

Minimum 1000 at IC=3A, VCE=3V.

What is the collector-emitter saturation voltage?

Maximum 4V at IB=20mA, IC=5A.

What is the power dissipation?

65W at case temperature 25°C.

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