# Bipolar (BJT) Single Transistor, NPN, 450 V, 2.5 A, 70 W, TO-220, Through Hole

![Product image](https://novapart.co/image/farnell:1084527/)

**URL**: https://novapart.co/products/BUL39D/bipolar-bjt-single-transistor-npn-450-v-25-a-70-w
**SKU**: BUL39D
**Manufacturer**: STMICROELECTRONICS
**Category**: Semiconductors - Discretes || Transistors || Bipolar Transistors || Single Bipolar Junction Transistors - BJT
**Price**: €0.1840
**Stock**: 10+

## Specifications

| Parameter | Value |
|---|---|
| No. Of Pins | 3Pins |
| Power Dissipation | 70W |
| Dc Current Gain Hfe | 10hFE |
| Transistor Mounting | Through Hole |
| Transistor Polarity | NPN |
| Transistor Case Style | TO-220 |
| Dc Current Gain Hfe Min | 10hFE |
| Operating Temperature Max | 150°C |
| Continuous Collector Current | 2.5A |
| Collector Emitter Voltage Max | 450V |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:1084527/)

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## **BUL39D** High voltage fast-switching NPN power transistor 

## **Features** 

- Integrated antiparallel collector-emitter diode 

- High voltage capability 

- Low spread of dynamic parameters 

- Minimum lot-to-lot spread for reliable operation 

- Very high switching speed 

## **Application** 

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**----- Start of picture text -----**<br>
3<br>2<br>1<br>TO-220<br>**----- End of picture text -----**<br>


- Electronic transformer for halogen lamp 

## **Description** 

The device is manufactured using high voltage multi-epitaxial planar technology for high switching speeds while maintaining the wide RBSOA. The device is designed for use in electronic transformer for halogen lamp. 

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

**==> picture [111 x 145] intentionally omitted <==**

**Table 1. Device summary** 

|**Order code**|**Marking**|**Package**|**Packaging**|
|---|---|---|---|
|BUL39D|BUL39D|TO-220|Tube|



October 2008 

1/11 

Rev 5 

_www.st.com_ 

**Contents** 

**BUL39D** 

|**Contents**|**Contents**|
|---|---|
|**1**|**Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3**|
|**2**|**Electrical characteristics  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4**|
||2.1<br>Electrical characteristics (curves)       . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5|
|**3**|**Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7**|
|**4**|**Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8**|
|**5**|**Revision history  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10**|



2/11 

**Electrical ratings** 

**BUL39D** 

## **1 Electrical ratings** 

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

|**Table 2.**|**Absolute maximum rating**|||
|---|---|---|---|
|**Symbol**|**Parameter**|**Value**|**Unit**|
|VCES|Collector-emitter voltage (VBE= 0)|850|V|
|VCEO|Collector-emitter voltage (IB= 0)|450|V|
|VEBO|Emitter-base voltage (IC= 0)|9|V|
|IC|Collector current|4|A|
|ICM|Collector peak current (tP< 5 ms)|8|A|
|IB|Base current|2|A|
|IBM|Base peak current (tP< 5 ms)|4|A|
|Ptot|Total dissipation at Tc= 25 °C|70|W|
|Tstg|Storage temperature|-65 to 150|°C|
|TJ|Max. operating junction temperature|150|°C|



## **Table 3. Thermal data** 

|**Table 3.**|**Thermal data**|||
|---|---|---|---|
|**Symbol**|**Parameter**|**Max value**|**Unit**|
|Rthj-case|Thermal resistance junction - case|1.8|°C/W|



3/11 

**Electrical characteristics** 

**BUL39D** 

## **2 Electrical characteristics** 

(Tcase = 25 °C unless otherwise specified) 

## **Table 4. Electrical characteristics** 

|**Symbol**|**Parameter**|**Test conditions**|**Min.**|**Typ.**|**Max.**|**Unit**|
|---|---|---|---|---|---|---|
|ICES|Collector cut-off current<br>(VBE= 0)|VCE= 850 V<br>VCE= 850 V    TC= 125 °C|||100<br>500|µA<br>µA|
|IEBO|Emitter cut-off current<br>(IC= 0)|VEB= 9 V|||100|µA|
|VCEO(sus)<br>(1)|Collector-emitter<br>sustaining voltage<br>(IB= 0)|IC=100 mA|450|||V|
|VCE(sat)<br>(1)|Collector-emitter<br>saturation voltage|IC= 1 A_   _IB= 0.2 A<br>IC= 2.5 A_   _IB= 0.5 A|||0.5<br>1.1|V<br>V|
|VBE(sat)<br>(1)|Base-emitter saturation<br>voltage|IC= 1 A_  _IB= 0.2 A<br>IC= 2.5 A_IB= 0.5 A|||1.1<br>1.3|V<br>V|
|hFE<br>(1)|DC current gain|IC= 10 mA_VCE= 5 V<br>IC= 5 A_   _VCE= 10 V|10<br>4||||
|ts<br>tf|Inductive load<br>Storage time<br>Fall time|IC= 2.5 A      Vclamp= 300 V<br>IB1= 0.5 A     VBE(off)= -5 V<br>RBB= 0          L=1 mH|||1.5<br>0.1|µs<br>µs|
|VF|Diode forward voltage|IF= 2 A|||1.5|V|



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

4/11 

**Electrical characteristics** 

**BUL39D** 

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

**Figure 2. Safe operating area** 

## **Figure 3. Derating** 

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**Figure 4. DC current gain (1 V)** 

**Figure 5. DC current gain (5 V)** 

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**Figure 6. Collector emitter saturation voltage Figure 7.** 

**Base emitter saturation voltage** 

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5/11 

**Electrical characteristics** 

**BUL39D** 

## **Figure 8. Inductive load fall time** 

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## **Figure 9. Inductive load storage time** 

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**Figure 10. Reverse biased safe operating area** 

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6/11 

**Test circuit** 

**BUL39D** 

## **3 Test circuit** 

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**----- Start of picture text -----**<br>
Figure 11. Inductive load switching test circuit<br>1) Fast electronic switch<br>2) Non-inductive Resistor<br>3) Fast recovery rectifier<br>**----- End of picture text -----**<br>


7/11 

**Package mechanical data** 

**BUL39D** 

## **4 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 

8/11 

**Package mechanical data** 

**BUL39D** 

## **TO-220 mechanical data** 

|**Dim**|**mm**|**mm**|**mm**|**inch**|**inch**|**inch**|
|---|---|---|---|---|---|---|
||**Min**|**Typ**|**Max**|**Min**|**Typ**|**Max**|
|A|4.40||4.60|0.173||0.181|
|b|0.61||0.88|0.024||0.034|
|b1|1.14||1.70|0.044||0.066|
|c|0.48||0.70|0.019||0.027|
|D|15.25||15.75|0.6||0.62|
|D1||1.27|||0.050||
|E|10||10.40|0.393||0.409|
|e|2.40||2.70|0.094||0.106|
|e1|4.95||5.15|0.194||0.202|
|F|1.23||1.32|0.048||0.051|
|H1|6.20||6.60|0.244||0.256|
|J1|2.40||2.72|0.094||0.107|
|L|13||14|0.511||0.551|
|L1|3.50||3.93|0.137||0.154|
|L20||16.40|||0.645||
|L30||28.90|||1.137||
|∅P|3.75||3.85|0.147||0.151|
|Q|2.65||2.95|0.104||0.116|



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9/11 

**Revision history** 

**BUL39D** 

## **5 Revision history** 

**Table 5. Document revision history** 

|**Date**|**Revision**|**Changes**|
|---|---|---|
|21-Jun-2004|4|No history because migration|
|27-Oct-2008|5|Mechanical data updated.|



10/11 

**BUL39D** 

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11/11 



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