DIODS BC857BT, BC857CT, BC857AT Datasheet

Features

Epitaxial Die Construction

·

Complementary NPN Types Available

·

(BC847AT, BT, CT)
Ultra-Small Surface Mount Package

·

Mechanical Data

Case: SOT-523, Molded Plastic

·

Case material - UL Flammability Rating

·

Classification 94V-0
Moisture sensitivity: Level 1 perJ-STD-020A

·

NEW PRODUCT

Terminals: Solderable per MIL-STD-202,

·

Method 208
Terminal Connections: See Diagram

·

Weight: 0.002 grams (approx.)

·

Marking Codes (See Table Below & Diagrams

·

on Page 2)

· Ordering & Date Code Information: See Page 2

BC857AT, BT, CT

PNP SMALL SIGNAL SURFACE MOUNT TRANSISTOR

SOT-523

Dim Min Max Typ

A

A

C

C

TOP VIEW

B

K

J

B

E

G

H

M

D

L

a

0.15 0.30 0.22

B

0.75 0.85 0.80

C

1.45 1.75 1.60

D

¾¾0.50

G

0.90 1.10 1.00

H

1.50 1.70 1.60

J

0.00 0.10 0.05

K

0.60 0.80 0.75

L

0.10 0.30 0.22

M

0.10 0.20 0.12

N

0.45 0.65 0.50

a

0° 8°¾

All Dimensions in mm

Type Marking

BC857AT 3V

BC857BT 3W

BC857CT 3G

Maximum Ratings

Collector-Base Voltage

Collector-Emitter Voltage

Emitter-Base Voltage

Collector Current

Power Dissipation (Note 1)

Thermal Resistance, Junction to Ambient (Note 1)

Operating and Storage Temperature Range

Notes: 1. Device mounted on FR-4 PCB, 1 inch x 0.85 inch x 0.062 inch; pad layout as shown on Diodes Inc. suggested pad layout

document AP02001, which can be found on ourwebsite at http://www.diodes.com/datasheets/ap02001.pdf.

@ TA= 25°C unless otherwise specified

Characteristic Symbol Value Unit

V

V

V

R

T

j,TSTG

CBO

CEO

EBO

I

C

P

d

qJA

-50

-45

-5.0 V

-100 mA

150 mW

833 °C/W

-55 to +150 °C

V

V

DS30275 Rev. 2 - 2 1 of 2 BC857AT, BT, CT

Electrical Characteristics

Characteristic Symbol Min Typ Max Unit Test Condition

Collector-Base Breakdown Voltage (Note 2)

Collector-Emitter Breakdown Voltage (Note 2)

Emitter-Base Breakdown Voltage (Note 2)

DC Current Gain (Note 2) Current Gain A

Collector-Emitter Saturation Voltage (Note 2)

Base-Emitter Saturation Voltage (Note 2)

NEW PRODUCT

Base-Emitter Voltage (Note 2)

Collector-Cutoff Current (Note 2)

Gain Bandwidth Product

Output Capacitance

Noise Figure

= 25°C unless otherwise specified

@ T

A

V

(BR)CBO

V

(BR)CEO

V

(BR)EBO

h

B

C

V

CE(SAT)

V

BE(SAT)

V

BE(ON)

I

CBO

C

FE

f

T

OB

NF — — 10 dB

-50 — — V I

-45 — — V

= 10mA, IB= 0

C

= 10mA, IB= 0

I

C

-5 — — V IE= 1mA, IC= 0

125
220
420

—

——-700

-600——

—
—

100 — — MHz

—— 4.5pF

—
290
520

—

—

-900

—

—

—

250
475
800

-300

-650

-750

-820

-15

-4.0NAµA

—
—

mV

mV

mV

—

= -5.0V, IC= -2.0mA

V

CE

= -10mA, IB= -0.5mA

I

C

I

= -100mA, IB= -5.0mA

C

= -10mA, IB= -0.5mA

I

C

I

= -100mA, IB= -5.0mA

C

= -5.0V, IC= -2.0mA

V

CE

V

= -5.0V, IC= -10mA

CE

= -30V

V

CB

V

= -30V, TA= 150°C

CB

= -5.0V, IC= -10mA,

V

CE

f = 100MHz

= -10V, f = 1.0MHz

V

CB

= -0.2mA, VCE= -5.0Vdc,

I

C

R

= 2.0KW, f = 1.0KHz,

S

BW = 200Hz

Ordering Information

Device

BC857AT-7

BC857BT-7

BC857CT-7

(Note 3)

Packaging Shipping

SOT-523 3000/Tape & Reel

SOT-523 3000/Tape & Reel

SOT-523 3000/Tape & Reel

Notes: 2. Short duration pulse test used to minimize self-heating effect.

3. For Packaging Details: go to ourwebsite at http://www.diodes.com/datasheets/ap02007.pdf.

Marking Information

XX = Product Type Marking Code (See Page 1), e.g. 3V = BC857AT

XXYM

Date Code Key

Year 1998 1999 2000 2001 2002

Code JKLM N

Month Jan Feb March Apr May Jun Jul

Code 1234567

YM = Date Code Marking
Y = Year (ex: N = 2002)
M = Month (ex: 9 = September)

2003 2004

PR

Aug Sep Oct Nov Dec

89 O ND

DS30275 Rev. 2 - 2 2 of 2 BC857AT, BT, CT