# Bipolar (BJT) Single Transistor, PNP, 50 V, 5 A, 1.4 W, SOT-89, Surface Mount

![Product image](https://novapart.co/image/farnell:2344070/)

**URL**: https://novapart.co/products/2STF2550/bipolar-bjt-single-transistor-pnp-50-v-5-a-14-w
**SKU**: 2STF2550
**Manufacturer**: STMICROELECTRONICS
**Price**: €0.1210
**Stock**: 10+
**Lead Time**: 113 days (indicative)

## Description

Transistor Polarity:PNP; Collector Emitter Voltage V(br)ceo:-50V; Transition Frequency ft:-; Power Dissipation Pd:1.4W; DC Collector Current:-5A; DC Current Gain hFE:70hFE; Transistor Ca

## Specifications

| Parameter | Value |
|---|---|
| Msl | - |
| Svhc | No SVHC (25-Jun-2025) |
| No. Of Pins | 3Pins |
| Product Range | - |
| Qualification | - |
| Power Dissipation | 1.4W |
| Transistor Mounting | Surface Mount |
| Transistor Polarity | PNP |
| Transition Frequency | - |
| Transistor Case Style | SOT-89 |
| Dc Current Gain Hfe Min | 70hFE |
| Operating Temperature Max | 150°C |
| Continuous Collector Current | 5A |
| Collector Emitter Voltage Max | 50V |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:2344070/)

**==> picture [61 x 39] intentionally omitted <==**

## **2STF2550 2STN2550** 

## Low voltage high performance PNP power transistors 

**Preliminary Data** 

## **Features** 

- Very low collector-emitter saturation voltage 

- High current gain characteristic 

- Fast switching speed 

- Surface mounting devices in medium power SOT-89 and SOT-223 packages 

## **Applications** 

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4<br>4<br>3<br>3<br>2<br>2<br>1 1<br>SOT-89 SOT-223<br>**----- End of picture text -----**<br>


- Emergency lighting 

- LED 

- Motherboard and hard disk drive 

- Mobile equipment 

- Battery charger 

- Voltage regulation 

## **Description** 

The 2STF2550 and 2STN2550 are PNP transistors manufactured using new “PB-HCD” (Power bipolar high current density) technology. The resulting transistor shows exceptional high gain performances coupled with very low saturation voltage. 

## **Figure 1. Internal schematic diagram** 

**==> picture [118 x 137] intentionally omitted <==**

**Table 1. Device summary** 

|**Order codes**|**Marking**|**Package**|**Packaging**|
|---|---|---|---|
|2STF2550|2550|SOT-89|Tape and reel|
|2STN2550|N2550|SOT-223||



November 2008 Rev 1 

This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice. 

1/8 

_www.st.com_ 

**2STF2550 - 2STN2550** 

**Electrical ratings** 

## **1 Electrical ratings** 

## **Table 2. Absolute maximum rating** 

|**Table 2.**|**Absolute maximum rating**||||
|---|---|---|---|---|
|**Symbol**|**Parameter**|**Value**||**Unit**|
|||**2STF2550**|**2STN2550**||
|||**SOT-89**|**SOT-223**||
|VCES|Collector-emitter voltage (VCE= 0)|-50||V|
|VCEO|Collector-emitter voltage (IB= 0)|-50||V|
|VEBO|Emitter-base voltage (IC= 0)|-5||V|
|IC|Collector current|-5||A|
|ICM|Collector peak current (tP< 5 ms)|-10||A|
|IB|Base current|-1||A|
|PTOT|Total dissipation at Tamb= 25 °C|1.4|1.6|W|
|Tstg|Storage temperature|-65 to 150||°C|
|TJ|Max. operating junction temperature|150||°C|



|**Table 3.**<br>**Thermal data**|**Table 3.**<br>**Thermal data**|**Table 3.**<br>**Thermal data**|**Table 3.**<br>**Thermal data**|**Table 3.**<br>**Thermal data**|
|---|---|---|---|---|
|**Symbol**|**Parameter**|**SOT-89**|**SOT-223**|**Unit**|
|Rthj-amb<br>(1)|Thermal resistance junction-amb__max|89|78|°C/W|



1. Device mounted on PCB area of 1 cm[2] 

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**2STF2550 - 2STN2550** 

**Electrical characteristics** 

## **2 Electrical characteristics** 

(Tcase  = 25 °C unless otherwise specified) 

## **Table 4. Electrical characteristics** 

|**Symbol**|**Parameter**|**Test conditions**|**Min.**|**Typ.**|**Max.**|**Unit**|
|---|---|---|---|---|---|---|
|ICBO|Collector cut-off current<br>(IE= 0)|VCB= -50 V|||-0.1|μA|
|IEBO|Emitter cut-off current<br>(IC= 0)|VEB= -4 V|||-0.1|μA|
|V(BR)CBO|Collector-base<br>breakdown voltage<br>(IE= 0)|IC= -100μA|-50|||V|
|V(BR)CEO<br>(1)|Collector-emitter<br>breakdown voltage<br>(IB= 0)|IC= -10 mA|-50|||V|
|V(BR)EBO|Emitter-base breakdown<br>voltage (IC= 0)|IE= -100μA|-5|||V|
|hFE<br>(1)|DC current gain|IC= -0.5 A         VCE= -2 V<br>IC= -2 A            VCE= -2 V<br>IC= -3 A            VCE= -2 V<br>IC= -5 A            VCE= -5 V|110<br>80|350<br>70|350||
|VCE(sat)<br>(1)|Collector-emitter<br>saturation voltage|IC= -3 A           IB= -300 mA||-0.39|-0.55|V|
|VBE(sat)<br>(1)|Base-emitter saturation<br>voltage|IC= -3 A           IB= -300 mA||-1|-1.2|V|
|CCBO|Collector-base<br>capacitance (IE= 0)|VCB= -10 V, f = 1 MHz||30||pF|
|ton<br>toff|Resistive load<br>Turn-on time<br>Turn-off time|IC= -1.5 A         VCC= -10 V<br>IB1= -IB2= -150 mA||80<br>3 00||ns<br>ns|



1. Pulsed duration = 300 μ s, duty cycle ≤ 1.5% 

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**2STF2550 - 2STN2550** 

**Package mechanical data** 

## **3 Package mechanical data** 

In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com 

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**2STF2550 - 2STN2550** 

**Package mechanical data** 

## **SOT-223 mechanical data** 

|**SOT-223 mechanical data**|**SOT-223 mechanical data**|**SOT-223 mechanical data**|**SOT-223 mechanical data**|
|---|---|---|---|
|||||
|||||
|**DIM.**|**mm.**|||
||**min.**|**typ**|**max.**|
|A|||1.80|
|A1|0.02||0.1|
|B|0.60|0.70|0.85|
|B1|2.90|3.00|3.15|
|c|0.24|0.26|0.35|
|D|6.30|6.50|6.70|
|e||2.30||
|e1||4.60||
|E|3.30|3.50|3.70|
|H|6.70|7.00|7.30|
|V|||10 o|
|||||



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**Package mechanical data** 

## **SOT-89 MECHANICAL DATA** 

|**DIM.**|**mm**|**mm**|**mm**|**mm**|||||**mils**|**mils**|**mils**|**mils**|**mils**|**mils**|**mils**|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
||**MIN.**|**TYP.**|||**MAX.**||||**MIN.**||||**TYP.**||**MAX.**|
|A|1.4||||1.6||||55.1||||||63.0|
|B|0.44||||0.56||||17.3||||||22.0|
|B1|0.36||||0.48||||14.2||||||18.9|
|C|0.35||||0.44||||13.8||||||17.3|
|C1|0.35||||0.44||||13.8||||||17.3|
|D|4.4||||4.6||||173.2||||||181.1|
|D1|1.62||||1.83||||63.8||||||72.0|
|E|2.29||||2.6||||90.2||||||102.4|
|e|1.42||||1.57||||55.9||||||61.8|
|e1|2.92||||3.07||||115.0||||||120.9|
|H|3.94||||4.25||||155.1||||||167.3|
|L|0.89||||1.2||||35.0||||||47.2|
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**2STF2550 - 2STN2550** 

**Revision history** 

## **4 Revision history** 

|**Table 5.**<br>**Document revision history**|**Table 5.**<br>**Document revision history**|**Table 5.**<br>**Document revision history**|
|---|---|---|
|**Date**|**Revision**|**Changes**|
|12-Nov-2008|1|Initial release|



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**2STF2550 - 2STN2550** 

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## Links

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- [Supplier page](https://es.farnell.com/stmicroelectronics/2stf2550/transistor-pnp-50v-5a-sot-89/dp/2344070)
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