Diodes-Incorporated-AC857BSQ-7

AC857BSQ  

45V DUAL PNP SMALL SIGNAL SURFACE MOUNT TRANSISTOR  

Description  

Mechanical Data  

This Bipolar Junction Transistor (BJT) is designed to meet the stringent  

requirement of Automotive Applications.  





Case: SOT363  

Case Material: Molded Plastic, “Green” Molding Compound. UL  

Flammability Classification

 

Rating 94V-0  





Moisture Sensitivity:

 

Level 1 per J-STD-020  

Features  

Terminals: Finish



Matte Tin Finish. Solderable per MIL-STD-  

e3  

202, Method 208  















Ultra-Small Surface Mount Package  



Weight: 0.006 grams (Approximate)  

Ideally Suited for Automated Insertion  

For Switching and AF Amplifier Application  

Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)  

Halogen and Antimony Free. “Green” Device (Note 3)  

Qualified to AEC-Q101 Standards for High Reliability  

PPAP Capable (Note 4)  

SOT363  

C1  

C2  

B2  

B1  

SOT363  

E1  

E2  

Top View  

Pin-Out  

Device Symbol  

Top View  

Ordering Information

(Notes 4 & 5)  

Part Number  

AC857BSQ-7  

Compliance  

Automotive  

Marking  

2C8  

Reel Size (inches)  

Tape Width (mm)  

Quantity Per Reel  

3,000  

7

8

Notes:  

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.  

for more information about Diodes Incorporated’s definitions of Hal

ogen- and Antimony-free, “Green”  

and Lead-free.  

3. Halogen- and Antimony-

free “Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and  

<1000ppm antimony compounds.  

Marking Information  

SOT363  

2C8 = Product Type Marking Code  

YM = Date Code Marking  

Y = Year (ex: D = 2016)  

2C8 YM  

M 8

 

Y 2 C  

M = Month (ex: 9 = September)  

Date Code Key  

Year  

2016  

2017  

2018  

2019  

2020  

2021  

2022  

2023  

Code  

D

E

F

G

H

I

J

K

Aug  

Sep  

Oct  

Nov  

Dec  

Month  

Code  

Jan  

Feb  

Mar  

Apr  

May  

Jun  

Jul  

8

9

O

N

D

1

2

3

4

5

6

7

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February 2017  

© Diodes Incorporated  

AC857BSQ  

Document number:

DS39495 Rev.

 

1 – 2  

AC857BSQ  

Absolute Maximum Ratings

(@T

A

= +25°C, unless otherwise specified.)  

Characteristic  

Symbol  

V

CBO  

V

CEO  

V

EBO  

I

C  

Value  

-50  

Unit  

V

Collector-Base Voltage  

Collector-Emitter Voltage  

Emitter-Base Voltage  

Collector Current  

-45  

V

-5.0  

-100  

-200  

-200  

V

mA  

mA  

mA  

Peak Collector Current  

Peak Base Current  

I

CM  

I

BM  

Thermal Characteristics

(@T

A

= +25°C, unless otherwise specified.)  

Characteristic  

Power Dissipation (Note 6)  

Symbol  

Value  

200  

Unit  

mW  



C/W  



C  

P

D  

Thermal Resistance, Junction to Ambient Air (Note 6)  

Operating and Storage Temperature Range  

625  

R

  

JA  

-55 to +150  

T

J

, T

STG  

Electrical Characteristics

(@T

A

= +25°C unless otherwise specified.)  

Characteristic

(Note 7)  

Collector-Base Breakdown Voltage  

Symbol  

BV

CBO  

BV

CEO  

BV

EBO  

h

FE  

Min  

-50  

-45  

-5  

Typ  

—

Max  

—

Unit  

V

Test Condition  

I

C

= -100µA, I

B

= 0  

Collector-Emitter Breakdown Voltage  

Emitter-Base Breakdown Voltage  

DC Current Gain  

—

—

V

I

C

= -10mA, I

B

= 0  

—

—

V

I

E

= -100µA, I

C

= 0  

220  

—

475  

—

V

CE

= -5.0V, I

C

= -2.0mA  

I

C

= -10mA, I

B

= -0.5mA  

I

C

= -100mA, I

B

= -5.0mA  

I

C

= -10mA, I

B

= -0.5mA  

V

CE

= -5.0V, I

C

= -2.0mA  

V

CB

= -30V  

-100  

-400  

Collector-Emitter Saturation Voltage  

—

—

mV  

V

CE(SAT)  

Base-Emitter Saturation Voltage  

Base-Emitter Voltage  

—

-700  

-665  

—

mV  

mV  

V

BE(SAT)  

V

BE(ON)  

-580  

-750  

—

—

—

—

-15  

-4.0  

nA  

µA  

Collector-Cutoff Current  

Emitter Cutoff Current  

Gain Bandwidth Product  

I

CBO  

I

EBO  

f

T  

V

CB

= -30V, T

A

= +150°C  

V

EB

= -5.0V, I

C

= 0  

—

—

-100  

nA  

V

CE

= -5.0V, I

C

= -10mA,  

f = 100MHz  

100  

—

—

MHz  

Collector-Base Capacitance  

Emitter-Base Capacitance  

—

—

2

3

pF  

pF  

C

CBO  

C

EBO  

V

CB

= -10V, f = 1.0MHz  

V

EB

= -0.5V, f = 1.0MHz  

11  

—

Notes:  

6. For the device mounted on minimum recommended pad layout FR-4 PCB with high coverage of single sided 1oz copper, in still air conditions; the device  

is measured when operating in a steady-state condition.  

7. Short duration pulse test used to minimize self-heating effect.  

2 of 5  

February 2017  

© Diodes Incorporated  

AC857BSQ  

Document number:

DS39495 Rev.

 

1 – 2  

AC857BSQ  

Typical Electrical Characteristics

(@T

A

= +25°C, unless otherwise specified.)  

1,000  

250  

200  

100  

150  

100  

50  

10  

0

1

0

100  

200  

10  

I

C

, COLLECTOR CURRENT (mA)  

Fig. 2 Typical DC Current Gain vs. Collector Current  

1

100  

T

A

, AMBIENT TEMPERATURE (°C)  

Fig. 1 Power Dissipation vs. Ambient

T

e

mperature  

1,000  

0.5  

0.4  

0.3  

0.2  

100  

0.1  

0

10  

1

1

10  

0.1  

100  

1,000  

10  

100  

I

C

, COLLECTOR CURRENT (mA)  

I

C

, COLLECTOR CURRENT (mA)  

Fig. 4 Typical Gain-Bandwidth Product vs. Collector Current  

Fig. 3 Typical Collector-Emitter Saturation Voltage  

vs. Collector Current  

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February 2017  

© Diodes Incorporated  

AC857BSQ  

Document number:

DS39495 Rev.

 

1 – 2  

AC857BSQ  

Package Outline Dimensions  

SOT363  

SOT363  

Dim Min Max  

A1

0.00 0.10  

A2

0.90 1.00  

Typ  

0.05  

1.00  

0.25  

0.11  

2.15  

2.10  

1.30  

E

E1  

b

c

D

E

0.10 0.30  

0.10 0.22  

1.80 2.20  

2.00 2.20  

E1

1.15 1.35  

e

F

L

a

0.650 BSC  

0.40 0.45

 

0.425  

F

b

0.25 0.40  

0° 8°  

0.30  

—  

D

All Dimensions in mm  

A2  

c

a

L

e

A1  

Suggested Pad Layout  

SOT363  

C

Value  

Dimensions  

(in mm)  

C

G

X

Y

Y1  

0.650  

1.300  

0.420  

0.600  

2.500  

Y1  

G

Y

X

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February 2017  

© Diodes Incorporated  

AC857BSQ  

Document number:

DS39495 Rev.

 

1 – 2  

AC857BSQ  

IMPORTANT NOTICE  

DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT,  

INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE  

(AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).  

Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes  

without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the  

application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or  

trademark rights, nor the rights of others.

 

Any Customer or user of this document or products described herein in such applications shall assume  

all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated  

website, harmless against all damages.  

Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel.  

Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and  

hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or  

indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.  

Products described herein may be covered by one or more United States, international or foreign patents pending.

 

Product names and markings  

noted herein may also be covered by one or more United States, international or foreign trademarks.  

This document is written in English but may be translated into multiple languages for reference.

 

Only the English version of this document is the  

final and determinative format released by Diodes Incorporated.  

LIFE SUPPORT  

Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express  

written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:  

A. Life

 

support devices or systems are devices or systems which:  

1. are intended to implant into the body, or  

2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the  

labeling can be reasonably expected to result in significant injury to the user.  

B. A

 

critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the  

failure of the life support device or to affect its safety or effectiveness.  

Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and  

acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any  

use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related  

information or support that may be provided by Diodes Incorporated.

 

Further, Customers must fully indemnify Diodes Incorporated and its  

representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems.  

Copyright © 2017, Diodes Incorporated  

5 of 5  

February 2017  

© Diodes Incorporated  

AC857BSQ  

Document number:

DS39495 Rev.

 

1 – 2