# Bipolar (BJT) Single Transistor, General Purpose, NPN, 15 V, 2 A, 500 mW, SOT-23, Surface Mount

![Product image](https://novapart.co/image/farnell:4319973/)

**URL**: https://novapart.co/products/2STR1215/bipolar-bjt-single-transistor-general-purpose-npn
**SKU**: 2STR1215
**Manufacturer**: STMICROELECTRONICS
**Price**: €0.1020
**Stock**: 10+
**Lead Time**: 113 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (25-Jun-2025) |
| No. Of Pins | 3Pins |
| Product Range | - |
| Qualification | - |
| Power Dissipation | 500mW |
| Transistor Mounting | Surface Mount |
| Transistor Polarity | NPN |
| Transition Frequency | - |
| Transistor Case Style | SOT-23 |
| Dc Current Gain Hfe Min | 280hFE |
| Operating Temperature Max | 150°C |
| Continuous Collector Current | 2A |
| Collector Emitter Voltage Max | 15V |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:4319973/)

## **2STR1215** 

## Low voltage fast-switching NPN power transistor 

**Datasheet** - **production data** 

## **Features** 

- Very low collector-emitter saturation voltage 

**==> picture [88 x 95] intentionally omitted <==**

**----- Start of picture text -----**<br>
3<br>2<br>1<br>SOT-23<br>**----- End of picture text -----**<br>


- High current gain characteristic 

- Fast switching speed 

- Miniature SOT-23 plastic package for surface mounting circuits 

## **Applications** 

- LED 

- Battery charger 

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

- Voltage and relay drive 

- Voltage regulation 

## **Description** 

The 2STR1215 is a NPN transistor 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. 

**Table 1. device summary** 

|||**Table 1. device summaryy**||
|---|---|---|---|
|**Order code**|**Marking**|**Package**|**Packaging**|
|2STR1215|1215|SOT-23|Tape and reel|



May 2016 

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This is information on a product in full production. 

_www.st.com_ 

**Contents** 

**2STR1215** 

|**Contents**|**Contents**|
|---|---|
|**1**|**Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3**|
|**2**|**Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4**|
||2.1<br>Electrical characteristics (curves)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5|
||2.2<br>Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6|
|**3**|**Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7**|
||3.1<br>SOT-23 package information  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7|
|**4**|**Revision history  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10**|



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**2STR1215** 

**Electrical ratings** 

## **1 Electrical ratings** 

**Table 2. Absolute maximum rating** 

|**Symbol**|**Parameter**|**Parameter**|**Value**|**Unit**|
|---|---|---|---|---|
|VCBO|Collector-base voltage (IE= 0)||15|V|
|VCEO|Collector-emitter voltage (IB= 0)||15|V|
|VEBO|Emitter-base voltage (IC= 0)||5|V|
|IC|Collector current||1.5|A|
|ICM|Collector peak current (tP< 5 ms)||3|A|
|Ptot|Total dissipation at Tamb= 25 °C||0.5|W|
|Tstg|Storage temperature range||-65 to 150|°C|
|TJ|Operating junction temperature range||||
|**Table 3. Thermal data**|||||
|**Symbol**||**Parameter**|**Value**|**Unit**|
|Rthj-amb<br>(1)||Thermal resistance junction-amb max|250|°C/W|



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

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**2STR1215** 

**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= 15 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= 100 µA|15|||V|
|V(BR)CEO<br>(1)|Collector-emitter<br>breakdown voltage<br>(IB= 0)|IC= 10 mA|15|||V|
|V(BR)EBO|Emitter-base breakdown<br>voltage (IC= 0)|IE= 100 µA|5|||V|
|VCE(sat)<br>(1)|Collector-emitter<br>saturation voltage|IC= 0.1 A       IB= 1mA|||0.15|V|
|||IC= 1 A          IB= 100 mA||0.25|0.5|V|
|||IC= 2 A          IB= 200 mA||0.4|0.85|V|
|VBE(sat)<br>(1)|Base-emitter saturation<br>voltage|IC= 1 A           IB= 100 mA||0.9|1.25|V|
|hFE<br>(1)|DC current gain|IC= 50 mA      VCE= 2 V|200||||
|||IC= 0.5 A        VCE= 2 V|200|280|560||
|||IC= 1 A           VCE= 2 V|130||||
|||IC= 2 A           VCE= 2 V|80||||
|CCBO|Collector-base<br>capacitance (IE= 0)|VCB= 10 V      f = 1 MHz||16||pF|
|ton|Turn-on time|Resistive load<br>IC= 1.5 A       VCC= 10 V<br>IB1= -IB2= 150 mA||60||ns|
|toff|Turn-off time|||310||ns|



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

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**Electrical characteristics** 

## **2.1 Electrical characteristics (curves)** 

**Figure 2. DC current gain** 

**==> picture [139 x 137] intentionally omitted <==**

**Figure 3. Collector-emitter saturation voltage** 

**==> picture [144 x 137] intentionally omitted <==**

**Figure 4. Base-emitter saturation voltage** 

**==> picture [141 x 133] intentionally omitted <==**

**Figure 5. Resistive load switching time** 

**==> picture [141 x 135] intentionally omitted <==**

**Figure 6. Resistive load switching time** 

**==> picture [147 x 140] intentionally omitted <==**

**Figure 7. Resistive load switching time** 

**==> picture [141 x 138] intentionally omitted <==**

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**2STR1215** 

**Electrical characteristics** 

## **2.2 Test circuits** 

**==> picture [405 x 182] intentionally omitted <==**

**----- Start of picture text -----**<br>
Figure 8. Resistive load switching test circuit<br>1) Fast electronic switch<br>2) Non-inductive resistor<br>**----- End of picture text -----**<br>


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**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. 

## **3.1 SOT-23 package information** 

## **Figure 9. SOT-23 package outline** 

**==> picture [405 x 391] intentionally omitted <==**

**----- Start of picture text -----**<br>
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**2STR1215** 

**Package mechanical data** 

**Table 5. SOT-23 mechanical data** 

||**Table 5. SOT-23 mechanical data**|**Table 5. SOT-23 mechanical data**|**Table 5. SOT-23 mechanical data**|
|---|---|---|---|
|**Dim.**|**mm**|||
||**Min.**|**Typ.**|**Max.**|
|A|||1.25|
|A1|0||0.15|
|A2|1|1.10|1.20|
|A3|0.60|0.65|0.70|
|b|0.36||0.50|
|b1|0.36|0.38|0.45|
|c|0.14||0.20|
|c1|0.14|0.15|0.16|
|D|2.826|2.926|3.026|
|E|2.60|2.80|3.00|
|E1|1.526|1.626|1.726|
|e|0.90|0.95|1.00|
|e1|1.80|1.90|2.00|
|L|0.35|0.45|0.60|
|L1|0.59 REF|||
|L2|0.25 BSC|||
|R|0.05|||
|R1|0.05|||
|Θ|0°||8°|
|Θ1|3°|5°|7°|
|Θ2|6°||14°|



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**Package mechanical data** 

**Figure 10. SOT-23 recommended footprint (dimensions are in mm)** 

**==> picture [405 x 253] intentionally omitted <==**

**----- Start of picture text -----**<br>
���������<br>**----- End of picture text -----**<br>


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**2STR1215** 

**Revision history** 

## **4 Revision history** 

**Table 6. Document revision history** 

|**Date**|**Revision**|**Changes**|
|---|---|---|
|09-Feb-2006|1|Initial release|
|18-Jul-2006|2|New template|
|08-Sep-2008|3|Updated the SOT-23 mechanical data.|
|08-Jan-2009|4|Updated Figure 1: Internal schematic diagram<br>Updated statement ECOPACK®|
|16-May-2016|5|Updated: description<br>Updated:_Table 1_<br>Updated:_Section 3.1: SOT-23 package information_<br>Minor text changes.|



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## **IMPORTANT NOTICE – PLEASE READ CAREFULLY** 

STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. 

Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products. 

No license, express or implied, to any intellectual property right is granted by ST herein. 

Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. 

ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. 

Information in this document supersedes and replaces information previously supplied in any prior versions of this document. 

© 2016 STMicroelectronics – All rights reserved 

DocID12090 Rev 5 

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- [Supplier page](https://es.farnell.com/stmicroelectronics/2str1215/transistor-npn-15v-2a-sot-23/dp/4319973)
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