2STN1550 The 2STN1550 is an NPN power transistor from STMicroelectronics. It features 50V collector-emitter voltage and 5A continuous collector current in a SOT-223 package.
Mfr Part #:

2STN1550

Available from 3 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The 2STN1550 is an NPN power transistor from STMicroelectronics. It features 50V collector-emitter voltage and 5A continuous collector current in a SOT-223 package.
✓ Total Stock: 289,020 pcs
$ Price Range: $0.19 - $0.93

2STN1550 Available from 3 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
215,000 pcs
215000 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
54,020 pcs
54020 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
20,000 pcs
20000 pcs On Request 1 On Request On Request On Request On Request 2026-02-16 21:33:16

2STN1550 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
DC Current Gain (hFE) (Min) @ Ic, Vce
Mounting Type
Operating Temperature
Power
Storage Temperature
Supplier Device Package
Transistor Type
Vce Saturation (Max) @ Ib, Ic
Voltage

2STN1550 Description

Short technical summary and product information.

The 2STN1550 is a low voltage, high performance NPN power transistor manufactured by STMicroelectronics using PB-HCD technology. It is designed for applications requiring low saturation voltage, high current gain, and fast switching.

 

Key electrical specifications include a collector-emitter voltage (VCEO) of 50V, continuous collector current of 5A, and peak current of 10A. The DC current gain (hFE) is minimum 135 at 2A/2V and typically 250 at 3A/2V. The collector-emitter saturation voltage is typically 450mV at 300mA base current and 3A collector current. Total power dissipation is 1.6W in the SOT-223 package, with a junction-to-ambient thermal resistance of 78°C/W.

 

The device is housed in a surface-mount SOT-223 package (TO-261-4, TO-261AA) and is supplied in tape and reel packaging. It is suitable for applications such as emergency lighting, LED lighting, motherboard and hard disk drive circuits, mobile equipment, battery chargers, and voltage regulation.

2STN1550 Quick Information

Product Type: NPN Bipolar Junction Transistor
Canonical Name: 2STN1550 NPN Transistor
Subcategory: Single NPN Transistor

2STN1550 Compliance

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

2STN1550 Estimated Pricing

Qty Low High
1+ $0.93 $0.93
10+ $0.58 $0.58
100+ $0.38 $0.38
500+ $0.29 $0.29
1,000+ $0.26 $0.26
2,000+ $0.24 $0.24
3,000+ $0.22 $0.22
5,000+ $0.21 $0.21
7,000+ $0.20 $0.20
10,000+ $0.19 $0.19

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

2STN1550 Features

  • Very low collector-emitter saturation voltage.
  • High current gain characteristic.
  • Fast switching speed.
  • Surface mount SOT-223 package.
  • Rated for 50V and 5A operation.

2STN1550 Applications

  • Emergency lighting systems.
  • LED lighting applications.
  • Motherboard and hard disk drive circuits.
  • Mobile equipment power management.
  • Battery charger circuits.

2STN1550 FAQs

5 frequently asked questions generated from this part’s specifications.
What is the collector-emitter voltage rating of the 2STN1550?

The collector-emitter voltage (VCEO) is 50V.

What package is the 2STN1550 available in?

The 2STN1550 is available in a SOT-223 surface mount package.

What is the operating junction temperature range?

The maximum operating junction temperature is 150°C, with storage temperature from -65 to 150°C.

Is the 2STN1550 RoHS compliant?

The 2STN1550 is listed as RoHS3 compliant, though this is unverified.

What is the DC current gain (hFE) of the 2STN1550?

The DC current gain is minimum 135 at 2A, 2V, and typically 250 at 3A, 2V.

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