BC55-10PA-QX

**60 V, 1 A NPN medium power transistors Rev. 9 — 11 December 2024** 

## **BC55PA-Q series** 

**Product data sheet** 

## **1.  General description** 

NPN medium power transistor in an ultra thin SOT1061 leadless small Surface-Mounted Device (SMD) plastic package. 

**Table 1. Product overview** 

|**Type number**|**Package**|**Package**|**NPN complement**|
|---|---|---|---|
||**Nexperia**|**JEITA**||
|BC55PA-Q|SOT1061|-|BC52PA-Q|
|BC55-10PA-Q|||BC52-10PA-Q|
|BC55-16PA-Q|||BC52-16PA-Q|



## **2.  Features and benefits** 

- High current 

- Three current gain selections 

- High power dissipation capability 

- Exposed heatsink for excellent thermal and electrical conductivity 

- Leadless very small SMD plastic package with medium power capability 

- Qualified according to AEC-Q101 and recommended for use in automotive applications 

## **3.  Applications** 

- Linear voltage regulators 

- Power management 

- Low-side switches 

- MOSFET drivers 

- Battery-driven devices 

- Amplifiers 

## **4.  Quick reference data** 

|**Symbol**<br>~~a ~~<br>~~re~~<br>~~ee~~|**Parameter**<br> ~~(tts~~<br>~~nny~~<br>|**Conditions**<br>~~(tts~~<br>~~nr~~<br>|~~(tts~~<br>~~I~~<br>|**Min**<br>~~(tts~~<br>~~tn~~<br>|**Typ**<br>~~(tts~~<br>~~ns~~<br>~~I~~<br>|**Max**<br>~~(tts~~<br>|**Unit**<br>~~(tts~~<br>|
|---|---|---|---|---|---|---|---|
|VCEO<br>~~re~~<br>~~ee~~<br>~~ee~~|collector-emitter voltage<br>~~nny~~<br><br>|open base<br>~~nr~~<br><br>|~~I~~<br><br>~~**tt**~~|-<br>~~tn~~<br><br>~~**t**t~~|-<br>~~ns~~<br>~~I~~<br><br>~~ns~~|60<br>|V<br>|
|IC<br>~~re~~<br>~~ee~~<br>~~ee~~|collector current<br>~~nny~~<br>~~Gn~~<br>~~ee Pen~~|~~nr~~<br>~~Gn~~<br>~~Pen~~|~~I~~<br>~~Gn~~<br>~~**tt**~~|-<br>~~tn ~~<br>~~Gn~~<br>~~**t**t~~<br>~~s~~|-<br> ~~ns~~<br>~~I~~<br>~~Gn~~<br>~~ns~~|1<br>~~Gn~~|A<br>~~Gn~~|
|ICM<br>~~ee~~<br>~~ee~~<br>~~|~~|peak collector current<br>~~nny~~<br><br>~~ee Pen~~<br>~~|~~|single pulse; tp≤ 1 ms<br>~~nr~~<br><br>~~Pen~~<br>____|~~I~~<br><br>~~**tt**~~<br>~~FREE~~|-<br><br>~~**t**t~~<br>~~s~~<br>~~FREE~~|-<br>~~I~~<br><br>~~ns~~<br>~~FREE~~|2<br><br>~~FREE~~|A<br><br>~~FREE~~|
|hFE<br>~~ee ~~<br>~~|~~|DC current gain<br>~~**tt** ~~~~**t**t~~<br>~~ns~~<br> ~~ee Pen~~<br>~~s~~<br>~~Ce~~<br>~~|~~<br>____~~FREE~~|||||||
||BC55PA-Q<br>~~|~~<br>~~eee~~|VCE= 2 V; IC= 150 mA Tamb= 25 °C<br>____<br>~~eee~~|[1]<br>~~FREE~~<br>~~ee~~|63<br>~~FREE~~<br>~~ee~~|-<br>~~FREE~~<br>~~ee~~|250<br>~~FREE~~<br>~~ee~~|~~FREE~~<br>~~ee~~|
||BC55-10PA-Q<br>~~|~~<br>~~eee~~<br>~~Pe~~||[1]<br>~~FREE~~<br>~~ee~~<br>~~a ee~~|63<br>~~FREE~~<br>~~ee~~<br>~~ee~~|-<br>~~FREE~~<br>~~ee~~<br>~~ee~~|160<br>~~FREE~~<br>~~ee~~<br>~~ee~~|~~FREE~~<br>~~ee~~<br>~~ee~~|
||BC55-16PA-Q<br>~~|~~<br>~~eee~~<br>~~Pe~~||[1]<br>~~FREE~~<br>~~ee~~<br>~~a ee~~|100<br>~~FREE~~<br>~~ee ~~<br>~~ee~~|-<br>~~FREE~~<br> ~~ee~~<br>~~ee~~|250<br>~~FREE~~<br>~~ee~~<br>~~ee~~|~~FREE~~<br>~~ee~~<br>~~ee~~|



**Nexperia** 

**BC55PA-Q series** 

**60 V, 1 A NPN medium power transistors** 

## **5.  Pinning information** 

**Table 3. Pinning** 

|**Pin**|**Symbol**|**Description**|**Simplified outline**|**Graphic symbol**|
|---|---|---|---|---|
|1|B|base|Transparent top view<br>1<br>2<br>3|_sym021_<br>C<br>E<br>B|
|2|E|emitter|||
|3|C|collector|||



## **6.  Ordering information** 

## **Table 4. Ordering information** 

|**Type number**|**Package**|||
|---|---|---|---|
||**Name**|**Description**|**Version**|
|BC55PA-Q|-|plastic, leadless thermal enhanced ultra thin small outline<br>package ; no leads; 3 terminals; 2 mm x 2 mm x 0.65 mm body|SOT1061|
|BC55-10PA-Q||||
|BC55-16PA-Q||||



## **7.  Marking** 

## **Table 5. Marking** 

|**Type number**|**Marking code**|
|---|---|
|BC55PA-Q|AW|
|BC55-10PA-Q|BH|
|BC55-16PA-Q|BJ|



© Nexperia B.V. 2024. All rights reserved 

BC55PA-Q_SER 

All information provided in this document is subject to legal disclaimers. 

**2 / 12** 

**Rev. 9 — 11 December 2024** 

**Product data sheet** 

**Nexperia** 

**BC55PA-Q series** 

**60 V, 1 A NPN medium power transistors** 

## **8.  Limiting values** 

## **Table 6. Limiting values** 

_In accordance with the Absolute Maximum Rating System (IEC 60134)._ 

|**Symbol**|**Parameter**|**Conditions**||**Min**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|VCBO|collector-base voltage|open emitter||-|60|V|
|VCEO|collector-emitter voltage|open base||-|60|V|
|VEBO|emitter-base voltage|open collector||-|5|V|
|IC|collector current|||-|1|A|
|ICM|peak collector current|single pulse; tp≤ 1 ms||-|2|A|
|IB|base current|||-|0.3|A|
|IBM|peak base current|single pulse; tp≤ 1 ms||-|0.3|A|
|Ptot|total power dissipation|Tamb≤ 25 °C|[1]|-|0.42|W|
||||[2]|-|0.83|W|
||||[3]|-|1.10|W|
||||[4]|-|0.81|W|
||||[5]|-|1.65|W|
|Tj|junction temperature|||-|150|°C|
|Tamb|ambient temperature|||-55|150|°C|
|Tstg|storage temperature|||-65|150|°C|



[1] Device mounted on an FR4 PCB, single-sided copper, tin-plated and standard footprint. 

[2] Device mounted on an FR4 PCB, single-sided copper, tin-plated; mounting pad for collector 1 cm[2] . 

[3] Device mounted on an FR4 PCB, single-sided copper, tin-plated; mounting pad for collector 6 cm[2] . 

[4] Device mounted on an FR4 PCB, 4-layer copper, tin-plated and standard footprint. 

[5] Device mounted on an FR4 PCB, 4-layer copper, tin-plated, mounting pad for collector 1 cm[2] . 

**==> picture [325 x 242] intentionally omitted <==**

**----- Start of picture text -----**<br>
006aac676<br>2.0<br>Ptot<br>(W) (1)<br>1.5<br>(2)<br>1.0<br>(3)<br>(4)<br>0.5 (5)<br>0.0<br>-75 -25 25 75 125 175<br>Tamb (°C)<br>(1) FR4 PCB, 4-layer copper, mounting pad for collector 1 cm [2]<br>(2) FR4 PCB, single-sided copper, mounting pad for collector 6 cm [2]<br>(3) FR4 PCB, single-sided copper, mounting pad for collector 1 cm [2]<br>(4) FR4 PCB, 4-layer copper, standard footprint<br>**----- End of picture text -----**<br>


(5) FR4 PCB, single-sided copper, standard footprint 

**Fig. 1. Power derating curves SOT89** 

© Nexperia B.V. 2024. All rights reserved 

BC55PA-Q_SER 

All information provided in this document is subject to legal disclaimers. 

**3 / 12** 

**Rev. 9 — 11 December 2024** 

**Product data sheet** 

**Nexperia** 

**BC55PA-Q series** 

**60 V, 1 A NPN medium power transistors** 

## **9.  Thermal characteristics** 

**Table 7. Thermal characteristics** 

|**Symbol**|**Parameter**|**Conditions**||**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|---|
|Rth(j-a)|thermal resistance from junction to ambient|in free air|[1]|-|-|298|K/W|
||||[2]|-|-|151|K/W|
||||[3]|-|-|114|K/W|
||||[4]|-|-|154|K/W|
||||[5]|-|-|76|K/W|
|Rth(j-sp)|thermal resistance from junction to solder point|||-|-|20|K/W|



- [1] Device mounted on an FR4 PCB, single-sided copper, tin-plated and standard footprint. 

[2] Device mounted on an FR4 PCB, single-sided copper, tin-plated; monting pad for collector 1 cm[2] . 

[3] Device mounted on an FR4 PCB, single-sided copper, tin-plated; monting pad for collector 6 cm[2] . 

- [4] Device mounted on an FR4 PCB, 4-layer copper, tin-plated and standard footprint. [5] Device mounted on an FR4 PCB, 4-layer copper, tin-plated, mounting pad for collector 1 cm[2] . 

**==> picture [481 x 204] intentionally omitted <==**

**----- Start of picture text -----**<br>
006aac683<br>10 [3]<br>Zth(j-a) duty cycle = 1<br>(K/W)<br>0.75<br>0.5<br>10 [2] 0.33<br>0.25<br>0.2<br>0.1<br>0.05<br>10<br>0.02<br>0.01<br>1 0<br>10 [- 1]<br>10 [- 5] 10 [- 4] 10 [- 3] 10 [- 2] 10 [- 1] 1 10 10 [2] 10 [3]<br>tp (s)<br>FR4 PCB, single-sided, tin-plated and standard footprint<br>**----- End of picture text -----**<br>


**Fig. 2. Transient thermal impedance from junction to ambient as a function of pulse duration; typical values** 

**==> picture [31 x 5] intentionally omitted <==**

**----- Start of picture text -----**<br>
006aac684<br>**----- End of picture text -----**<br>


**==> picture [468 x 216] intentionally omitted <==**

**----- Start of picture text -----**<br>
10 [3]<br>Zth(j-a)<br>(K/W)<br>duty cycle = 1<br>10 [2] 0.75<br>0.5<br>0.33<br>0.25<br>0.2<br>0.1<br>10 0.05<br>0.02 0.01<br>1 0<br>10 [- 1]<br>10 [- 5] 10 [- 4] 10 [- 3] 10 [- 2] 10 [- 1] 1 10 10 [2] 10 [3]<br>tp (s)<br>FR4 PCB, single-sided copper, tin-plated; mounting pad for collector 1 cm [2]<br>Fig. 3. Transient thermal impedance from junction to ambient as a function of pulse duration; typical values<br>**----- End of picture text -----**<br>


© Nexperia B.V. 2024. All rights reserved 

BC55PA-Q_SER 

All information provided in this document is subject to legal disclaimers. 

**4 / 12** 

**Rev. 9 — 11 December 2024** 

**Product data sheet** 

**Nexperia** 

**BC55PA-Q series** 

## **60 V, 1 A NPN medium power transistors** 

**==> picture [486 x 220] intentionally omitted <==**

**----- Start of picture text -----**<br>
006aac685<br>10 [3]<br>Zth(j-a)<br>(K/W)<br>duty cycle = 1<br>10 [2]<br>0.75<br>0.5<br>0.33<br>0.25<br>0.2<br>0.1<br>10<br>0.05<br>0.02<br>1 0<br>0.01<br>10 [- 1]<br>10 [- 5] 10 [- 4] 10 [- 3] 10 [- 2] 10 [- 1] 1 10 10 [2] 10 [3]<br>tp (s)<br>FR4 PCB, single-sided copper, tin-plated; mounting pad for collector 6 cm [2]<br>Fig. 4. Transient thermal impedance from junction to ambient as a function of pulse duration; typical values<br>**----- End of picture text -----**<br>


**==> picture [31 x 5] intentionally omitted <==**

**----- Start of picture text -----**<br>
006aac686<br>**----- End of picture text -----**<br>


**==> picture [441 x 184] intentionally omitted <==**

**----- Start of picture text -----**<br>
10 [3]<br>Zth(j-a)<br>(K/W)<br>duty cycle = 1<br>10 [2] 0.75<br>0.5<br>0.33<br>0.25<br>0.2<br>0.1<br>10 0.05<br>0.02<br>1 0.01<br>0<br>10 [- 1]<br>10 [- 5] 10 [- 4] 10 [- 3] 10 [- 2] 10 [- 1] 1 10 10 [2] 10 [3]<br>tp (s)<br>**----- End of picture text -----**<br>


FR4 PCB, 4-layer copper, standard footprint **Fig. 5. Transient thermal impedance from junction to ambient as a function of pulse duration; typical values** 

**==> picture [481 x 189] intentionally omitted <==**

**----- Start of picture text -----**<br>
006aac687<br>10 [3]<br>Zth(j-a)<br>(K/W)<br>10 [2] duty cycle = 1<br>0.75<br>0.5<br>0.33<br>0.25<br>0.2<br>10<br>0.1<br>0.05<br>0.02<br>1<br>0 0.01<br>10 [- 1]<br>10 [- 5] 10 [- 4] 10 [- 3] 10 [- 2] 10 [- 1] 1 10 10 [2] 10 [3]<br>tp (s)<br>**----- End of picture text -----**<br>


FR4 PCB, 4-layer copper, mounting pad for collector 1 cm[2] . **Fig. 6. Transient thermal impedance from junction to ambient as a function of pulse duration; typical values** 

© Nexperia B.V. 2024. All rights reserved 

BC55PA-Q_SER 

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**5 / 12** 

**Rev. 9 — 11 December 2024** 

**Product data sheet** 

**Nexperia** 

**BC55PA-Q series** 

**60 V, 1 A NPN medium power transistors** 

## **10.  Characteristics** 

**Table 8. Characteristics** 

|**Symbol**|**Parameter**|**Conditions**||**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|---|
|V(BR)CBO|collector-base<br>breakdown voltage|IC= 100 µA; IE= 0 ; Tamb= 25 °C||60|-|-|V|
|V(BR)CEO|collector-emitter<br>breakdown voltage|IC= 2 µA; IB= 0 A; Tamb= 25 °C||60|-|-|V|
|V(BR)EBO|emitter-base<br>breakdown voltage|IC= 0 A; IE= 100 µA||5|-|-|V|
|ICBO|collector-base<br>cut-off current|VCB= 30 V; IE= 0 A; Tamb= 25 °C||-|-|100|nA|
|||VCB= 30 V; IE= 0 A; Tj= 150 °C||-|-|10|µA|
|IEBO|emitter-base<br>cut-off current|VEB= 5 V; IC= 0 A; Tamb= 25 °C||-|-|100|nA|
|hFE|DC current gain|||||||
||BC55PA-Q|VCE= 2 V; IC= 5 mA; Tamb= 25 °C|[1]|63|-|-||
|||VCE= 2 V; IC= 150 mA; Tamb= 25 °C|[1]|63|-|250||
|||VCE= 2 V; IC= 500 mA; Tamb= 25 °C|[1]|40|-|-||
||BC55-10PA-Q|VCE= 2 V; IC= 5 mA; Tamb= 25 °C|[1]|63|-|-||
|||VCE= 2 V; IC= 150 mA; Tamb= 25 °C|[1]|63|-|160||
|||VCE= 2 V; IC= 500 mA; Tamb= 25 °C|[1]|40|-|-||
||BC55-16PA-Q|VCE= 2 V; IC= 5 mA; Tamb= 25 °C|[1]|63|-|-||
|||VCE= 2 V; IC= 150 mA; Tamb= 25 °C|[1]|100|-|250||
|||VCE= 2 V; IC= 500 mA; Tamb= 25 °C|[1]|40|-|-||
|hFE|DC current gain|VCE= 2 V; IC= 5 mA; Tamb= 25 °C|[1]|63|-|-||
|hFE|DC current gain|VCE= 2 V; IC= 500 mA; Tamb= 25 °C|[1]|40|-|-||
|VCEsat|collector-emitter<br>saturation voltage|IC= 500 mA; IB= 50 mA; Tamb= 25 °C|[1]|-|-|0.5|V|
|VBE|base-emitter voltage|VCE= 2 V; IC= 500 mA; Tamb= 25 °C|[1]|-|-|1|V|
|Cc|collector capacitance|VCB= 10 V; IE= ie= 0 A; f = 1 MHz;<br>Tamb= 25 °C||-|6|-|pF|
|fT|transition frequency|VCE= 5 V; IC= 50 mA; f = 100 MHz;<br>Tamb= 25 °C||100|180|-|MHz|



[1] pulsed; tp ≤ 300 μs; δ ≤ 0.02 

© Nexperia B.V. 2024. All rights reserved 

BC55PA-Q_SER 

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**6 / 12** 

**Rev. 9 — 11 December 2024** 

**Product data sheet** 

**Nexperia** 

**BC55PA-Q series** 

**60 V, 1 A NPN medium power transistors** 

**==> picture [497 x 550] intentionally omitted <==**

**----- Start of picture text -----**<br>
006aac691<br>300<br>hFE<br>006aaa084<br>1.6<br>(1) IB (mA) = 50 45 40 35 30<br>200 IC<br>(A)<br>(2)<br>1.2<br>25<br>20<br>100 (3) 15<br>0.8 10<br>5<br>0 0.4<br>10 [- 4] 10 [- 3] 10 [- 2] 10 [- 1] 1 10<br>IC (A)<br>VCE = 2 V<br>0<br>(1) Tamb = 100 °C 0 0.4 0.8 1.2 1.6 2.0<br>(2) Tamb = 25 °C VCE (V)<br>(3) Tamb = -55 °C Tamb = 25 °C<br>Fig. 7. DC current gain as a function of collector Fig. 8. Collector current as a function of collector-<br>current; typical values emitter voltage; typical values<br>006aac692 006aac693<br>1.2 1<br>VBE<br>(V) VCEsat<br>(1) (V)<br>0.8<br>(2)<br>10 [- 1]<br>(3)<br>(1)<br>0.4<br>(2)<br>(3)<br>0.0 10 [- 2]<br>10 [- 1] 1 10 10 [2] 10 [3] 10 [4] 10 [- 1] 1 10 10 [2] 10 [3] 10 [4]<br>IC (mA) IC (mA)<br>VCE = 2 V IC/IB = 10<br>(1) Tamb = -55 °C (1) Tamb = 100 °C<br>(2) Tamb = 25 °C (2) Tamb = 25 °C<br>(3) Tamb = 100 °C (3) Tamb = -55 °C<br>Fig. 9. Base-emitter voltage as a function of collector Fig. 10. Collector-emitter saturation voltage as a<br>current; typical values function of collector current; typical values<br>**----- End of picture text -----**<br>


© Nexperia B.V. 2024. All rights reserved 

BC55PA-Q_SER 

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**7 / 12** 

**Rev. 9 — 11 December 2024** 

**Product data sheet** 

**Nexperia** 

**BC55PA-Q series** 

**60 V, 1 A NPN medium power transistors** 

## **11.  Test information** 

## **11.1.  Quality information** 

This product has been qualified in accordance with the Automotive Electronics Council (AEC) standard _Q101 - Stress test qualification for discrete semiconductors_ , and is suitable for use in automotive applications. 

## **12.  Package outline** 

**==> picture [362 x 181] intentionally omitted <==**

**----- Start of picture text -----**<br>
1.3<br>0.35  0.65<br>0.25 max<br>0.45<br>1 2<br>1.05  0.35<br>0.95<br>2.1<br>1.1  1.9<br>0.9<br>0.3<br>0.2 3<br>1.6<br>1.4<br>2.1<br>1.9<br>Dimensions in mm 09-11-12<br>Fig. 11. Package outline SOT1061<br>**----- End of picture text -----**<br>


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BC55PA-Q_SER 

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**8 / 12** 

**Rev. 9 — 11 December 2024** 

**Product data sheet** 

**Nexperia** 

**BC55PA-Q series** 

**60 V, 1 A NPN medium power transistors** 

## **13.  Soldering** 

**==> picture [331 x 333] intentionally omitted <==**

**----- Start of picture text -----**<br>
2.1<br>1.3<br>0.5 (2×)<br>0.4 (2×)<br>0.5 (2×)  0.6 (2×)<br>1.05<br>2.3  0.6  0.55<br>0.25<br>1.1  1.2<br>0.25 0.25<br>0.4<br>0.5<br>1.6<br>1.7<br>solder paste = solder lands  Dimensions in mm<br>solder resist  occupied area  sot1061_fr<br>**----- End of picture text -----**<br>


**Fig. 12. Reflow soldering footprint for SOT1061** 

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BC55PA-Q_SER 

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**9 / 12** 

**Rev. 9 — 11 December 2024** 

**Product data sheet** 

**Nexperia** 

**BC55PA-Q series** 

**60 V, 1 A NPN medium power transistors** 

## **14.  Revision history** 

## **Table 9. Revision history** 

|**Data sheet ID**|**Release date**|**Data sheet status**|**Change notice**|**Supersedes**|
|---|---|---|---|---|
|BC55PA-Q_SER v.1|20241211|Product data sheet|-|-|



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**10 / 12** 

**Rev. 9 — 11 December 2024** 

**Nexperia** 

**BC55PA-Q series** 

## **60 V, 1 A NPN medium power transistors** 

## **15.  Legal information** 

## **Data sheet status** 

|**Document status**<br>**[1][2]**|**Product**<br>**status[3]**|**Definition**|
|---|---|---|
|Objective [short]<br>data sheet|Development|This document contains data from<br>the objective specification for<br>product development.|
|Preliminary [short]<br>data sheet|Qualification|This document contains data from<br>the preliminary specification.|
|Product [short]<br>data sheet|Production|This document contains the product<br>specification.|



[1] Please consult the most recently issued document before initiating or completing a design. 

[2] The term 'short data sheet' is explained in section "Definitions". 

[3] The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status information is available on the internet at https://www.nexperia.com. 

## **Definitions** 

**Draft** — The document is a draft version only. The content is still under internal review and subject to formal approval, which may result in modifications or additions. Nexperia does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information. 

**Short data sheet** — A short data sheet is an extract from a full data sheet with the same product type number(s) and title. A short data sheet is intended for quick reference only and should not be relied upon to contain detailed and full information. For detailed and full information see the relevant full data sheet, which is available on request via the local Nexperia sales office. In case of any inconsistency or conflict with the short data sheet, the full data sheet shall prevail. 

**Product specification** — The information and data provided in a Product data sheet shall define the specification of the product as agreed between Nexperia and its customer, unless Nexperia and customer have explicitly agreed otherwise in writing. In no event however, shall an agreement be valid in which the Nexperia product is deemed to offer functions and qualities beyond those described in the Product data sheet. 

## **Disclaimers** 

**Limited warranty and liability** — Information in this document is believed to be accurate and reliable. However, Nexperia does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information. Nexperia takes no responsibility for the content in this document if provided by an information source outside of Nexperia. 

In no event shall Nexperia be liable for any indirect, incidental, punitive, special or consequential damages (including - without limitation - lost profits, lost savings, business interruption, costs related to the removal or replacement of any products or rework charges) whether or not such damages are based on tort (including negligence), warranty, breach of contract or any other legal theory. 

equipment, nor in applications where failure or malfunction of an Nexperia product can reasonably be expected to result in personal injury, death or severe property or environmental damage. Nexperia and its suppliers accept no liability for inclusion and/or use of Nexperia products in such equipment or applications and therefore such inclusion and/or use is at the customer's own risk. 

**Quick reference data** — The Quick reference data is an extract of the product data given in the Limiting values and Characteristics sections of this document, and as such is not complete, exhaustive or legally binding. 

**Applications** — Applications that are described herein for any of these products are for illustrative purposes only. Nexperia makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. 

Customers are responsible for the design and operation of their applications and products using Nexperia products, and Nexperia accepts no liability for any assistance with applications or customer product design. It is customer’s sole responsibility to determine whether the Nexperia product is suitable and fit for the customer’s applications and products planned, as well as for the planned application and use of customer’s third party customer(s). Customers should provide appropriate design and operating safeguards to minimize the risks associated with their applications and products. 

Nexperia does not accept any liability related to any default, damage, costs or problem which is based on any weakness or default in the customer’s applications or products, or the application or use by customer’s third party customer(s). Customer is responsible for doing all necessary testing for the customer’s applications and products using Nexperia products in order to avoid a default of the applications and the products or of the application or use by customer’s third party customer(s). Nexperia does not accept any liability in this respect. 

**Limiting values** — Stress above one or more limiting values (as defined in the Absolute Maximum Ratings System of IEC 60134) will cause permanent damage to the device. Limiting values are stress ratings only and (proper) operation of the device at these or any other conditions above those given in the Recommended operating conditions section (if present) or the Characteristics sections of this document is not warranted. Constant or repeated exposure to limiting values will permanently and irreversibly affect the quality and reliability of the device. 

**Terms and conditions of commercial sale** — Nexperia products are sold subject to the general terms and conditions of commercial sale, as published at http://www.nexperia.com/profile/terms, unless otherwise agreed in a valid written individual agreement. In case an individual agreement is concluded only the terms and conditions of the respective agreement shall apply. Nexperia hereby expressly objects to applying the customer’s general terms and conditions with regard to the purchase of Nexperia products by customer. 

**No offer to sell or license** — Nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication of any license under any copyrights, patents or other industrial or intellectual property rights. 

**Export control** — This document as well as the item(s) described herein may be subject to export control regulations. Export might require a prior authorization from competent authorities. 

**Translations** — A non-English (translated) version of a document is for reference only. The English version shall prevail in case of any discrepancy between the translated and English versions. 

## **Trademarks** 

Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. 

Notwithstanding any damages that customer might incur for any reason whatsoever, Nexperia’s aggregate and cumulative liability towards customer for the products described herein shall be limited in accordance with the Terms and conditions of commercial sale of Nexperia. 

**Right to make changes** — Nexperia reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. This document supersedes and replaces all information supplied prior to the publication hereof. 

**Suitability for use in automotive applications** — This Nexperia product has been qualified for use in automotive applications. Unless otherwise agreed in writing, the product is not designed, authorized or warranted to be suitable for use in life support, life-critical or safety-critical systems or 

© Nexperia B.V. 2024. All rights reserved 

BC55PA-Q_SER 

All information provided in this document is subject to legal disclaimers. 

**11 / 12** 

**Rev. 9 — 11 December 2024** 

**Product data sheet** 

**Nexperia** 

**BC55PA-Q series** 

**60 V, 1 A NPN medium power transistors** 

## **Contents** 

**1.  General description......................................................1 2.  Features and benefits.................................................. 1 3.  Applications.................................................................. 1 4.  Quick reference data....................................................1 5.  Pinning information......................................................2 6.  Ordering information....................................................2 7.  Marking..........................................................................2 8.  Limiting values............................................................. 3 9.  Thermal characteristics............................................... 4 10.  Characteristics............................................................6 11.  Test information..........................................................8** 11.1.  Quality information.....................................................8 **12.  Package outline.......................................................... 8 13.  Soldering..................................................................... 9 14.  Revision history........................................................10 15.  Legal information......................................................11** 

## © **Nexperia B.V. 2024. All rights reserved** 

For more information, please visit: http://www.nexperia.com For sales office addresses, please send an email to: salesaddresses@nexperia.com **Date of release: 11 December 2024** 

© Nexperia B.V. 2024. All rights reserved 

BC55PA-Q_SER 

All information provided in this document is subject to legal disclaimers. 

**12 / 12** 

**Rev. 9 — 11 December 2024** 

**Product data sheet**