# Bipolar (BJT) Single Transistor, NPN, 45 V, 1 A, 12.5 W, TO-126, Through Hole

![Product image](https://novapart.co/image/farnell:1574347/)

**URL**: https://novapart.co/products/BD135/bipolar-bjt-single-transistor-npn-45-v-1-a-125-w
**SKU**: BD135
**Manufacturer**: MULTICOMP PRO
**Price**: €0.1210
**Stock**: 500+
**Lead Time**: 127 days (indicative)

## Description

Transistor Polarity:NPN; Collector Emitter Voltage V(br)ceo:45V; Transition Frequency ft:-; Power Dissipation Pd:12.5W; DC Collector Current:1A; DC Current Gain hFE:40hFE; Transistor Case Style:T

## Specifications

| Parameter | Value |
|---|---|
| Msl | - |
| Svhc | No SVHC (25-Jun-2025) |
| No. Of Pins | 3Pins |
| Product Range | - |
| Qualification | - |
| Power Dissipation | 12.5W |
| Transistor Mounting | Through Hole |
| Transistor Polarity | NPN |
| Transition Frequency | - |
| Transistor Case Style | TO-126 |
| Dc Current Gain Hfe Min | 40hFE |
| Operating Temperature Max | 150°C |
| Continuous Collector Current | 1A |
| Collector Emitter Voltage Max | 45V |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:1574347/)

## **NPN Transistor TO-126** 

**Pin Configuration:** 

1. Emitter 

2. Collector 

3. Base 

## **Feature:** 

- NPN Plastic Power Transistors 

- Medium Power Linear and Switching Applications 

## **Absolute Maximum Ratings** 

|**Absolute Maximum Ratings**|||||
|---|---|---|---|---|
|**Description**|**Symbol**|**-**|**BD135**|**Unit**|
|Collector-Base Voltage (Open Emitter)|VCBO|Max.|45|V|
|Collector Emitter Voltage (Open Base)|VCEO||||
|Collector Current|IC||1.5|A|
|Total Power Dissipation upto TC= 25°C|Ptot||12.5|W|
|Junction Temperature|Tj||150|°C|
|Collector-Emitter Saturation Voltage<br>IC= 0.5A, IB= 0.05A|VCE (Sat)||0.5|V|
|DC Current Gain<br>IC= 0.15A; VCE= 2V|hFE|Min.<br>Max.|40<br>250|-|



## **Ratings (at Ta = 25°C unless otherwise specified)** 

|**Description**|**Symbol**|**-**|**BD135**|**Unit**|
|---|---|---|---|---|
|Collector-Base Voltage (Open Emitter)|VCBO|Max.|45|V|
|Collector Emitter Voltage (Open Base)|VCEO||||
|Emitter-Base Voltage (Open Collector)|VEBO||5||
|Collector Current|IC||1.5|A|
|Base Current|IB||0.5||
|Total Power Dissipation up to TA= 25°C<br>Derate above 25°C|Ptot||1.25<br>10|W<br>mW/°C|



Newark.com/multicomp-pro Farnell.com/multicomp-pro Element14.com/multicomp-pro 

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## **NPN Transistor TO-126** 

## **Ratings (at Ta = 25°C unless otherwise specified)** 

|**Description**|**Symbol**|**-**|**BD135**|**Unit**|
|---|---|---|---|---|
|Total Power Dissipation up to TC= 25°C<br>Derate above 25°C|Ptot|Max.|12.5<br>100|W<br>mW/°C|
|Junction Temperature|Tj||150|°C|
|Storage Temperature|Tstg|-|-65 to +150||
|**Thermal Resistance**|||||
|From Junction to Case|Rth (j-c)|-|10|°C/W|
|From Junction to Ambient|Rth (j-a)|-|100||



## **Characteristics (Tamb = 25°C unless otherwise specified)** 

|**Description**|**Symbol**|**-**|**BD135**|**Unit**|
|---|---|---|---|---|
|Collector Cut off Current<br>IE= 0; VCB= 30V<br>IE= 0; VCB= 30V; TC= 125°C|ICBO|Max.|0.1<br>10|µA|
|Emitter Cut off Current<br>IC= 0; VEB= 5V|IEBO||10||
|Breakdown Voltages<br>IC= 0.03A; IB= 0<br>IC= 1mA; IE= 0<br>IE= 1mA; IC= 0|VCEO (Sus)*<br>VCBO<br>VEBO|Min.|45<br>45<br>5|V|
|Saturation Voltage<br>IC= 0.5A; IB= 0.05A|VCE (sat)*|Max.|0.5||
|Base-Emitter On Voltage<br>IC= 0.5A; VCE= 2V|VBE (on)*||1||
|DC Current Gain<br>IC= 0.15A; VCE= 2V*<br>IC= 0.15A; VCE= 2V**<br>IC= 0.15A; VCE= 2V*|hFE*|Min.<br>Min.<br>Max.<br>Min.|25<br>40<br>250<br>25|-|



**** hFE Classification:** 

|-6|Min.|40|
|---|---|---|
||Max.|100|
|-10|Min.|63|
||Max.|160|
|-16|Min.|100|
||Max.|250|
|-25|Min.|160|
||Max.|400|



* Pulse Test: Pulse Width = ≤300μs, Duty Cycle ≤2%. 

Newark.com/multicomp-pro Farnell.com/multicomp-pro Element14.com/multicomp-pro 

17/09/19 V1.0 

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## **NPN Transistor TO-126** 

|**Dimensions**|**Min.**|**Max.**|
|---|---|---|
|A|7.4|7.8|
|B|10.5|10.8|
|C|2.4|2.7|
|D|0.7|0.9|
|E|2.25 (Typical)||
|F|0.49|0.75|
|G|4.5 (Typical)||
|L|15.7 (Typical)||
|M|1.27 (Typical)||
|N|3.75 (Typical)||
|P|3|3.2|
|S|2.5 (Typical)||



Dimensions : Millimetres 

**Pin Configuration:** 1. Emitter 

2. Collector 

3. Base 

|**Description**<br>~~——~~|**Part Number**<br>~~——~~|
|---|---|
|Transistor, NPN, TO-126<br>~~——~~|BD135<br>~~——~~|



**Important Notice :** This data sheet and its contents (the “Information”) belong to the members of the AVNET group of companies (the “Group”) or are licensed to it. No licence is granted for the use of it other than for information purposes in connection with the products to which it relates. No licence of any intellectual property rights is granted. The Information is subject to change without notice and replaces all data sheets previously supplied. The Information supplied is believed to be accurate but the Group assumes no responsibility for its accuracy or completeness, any error in or omission from it or for any use made of it. Users of this data sheet should check for themselves the Information and the suitability of the products for their purpose and not make any assumptions based on information included or omitted. Liability for loss or damage resulting from any reliance on the Information or use of it (including liability resulting from negligence or where the Group was aware of the possibility of such loss or damage arising) is excluded. This will not operate to limit or restrict the Group’s liability for death or personal injury resulting from its negligence. Multicomp Pro is the registered trademark of Premier Farnell Limited 2019. 

Newark.com/multicomp-pro Farnell.com/multicomp-pro Element14.com/multicomp-pro 

17/09/19 V1.0 

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## Links

- [View this product on Novapart](https://novapart.co/products/BD135/bipolar-bjt-single-transistor-npn-45-v-1-a-125-w)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/multicomp-pro/bd135/transistor-npn-to-126/dp/1574347)
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