DS30275 Rev. 2 - 2 1 of 2 BC857AT, BT, CT
BC857AT, BT, CT
PNP SMALL SIGNAL SURFACE MOUNT TRANSISTOR
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.
Characteristic Symbol Value Unit
Collector-Base Voltage VCBO -50 V
Collector-Emitter Voltage VCEO -45 V
Emitter-Base Voltage VEBO -5.0 V
Collector Current IC -100 mA
Power Dissipation (Note 1) Pd 150 mW
Thermal Resistance, Junction to Ambient (Note 1) Rc113JA 833 °C/W
Operating and Storage Temperature Range Tj,TSTG -55 to +150 °C
Type Marking
BC857AT 3V
BC857BT 3W
BC857CT 3G
Maximum Ratings @ TA = 25°C unless otherwise specified
Features
c183 Epitaxial Die Construction
c183 Complementary NPN Types Available
(BC847AT, BT, CT)
c183 Ultra-Small Surface Mount Package
Mechanical Data
c183 Case: SOT-523, Molded Plastic
c183 Case material - UL Flammability Rating
Classification 94V-0
c183 Moisture sensitivity: Level 1 perJ-STD-020A
c183 Terminals: Solderable per MIL-STD-202,
Method 208
c183 Terminal Connections: See Diagram
c183 Weight: 0.002 grams (approx.)
c183 Marking Codes (See Table Below & Diagrams
on Page 2)
c183 Ordering & Date Code Information: See Page 2
NEW
P
RODUCT
SOT-523
Dim Min Max Typ
A 0.15 0.30 0.22
B 0.75 0.85 0.80
C 1.45 1.75 1.60
D c190c1900.50
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
c97 0c176 8c176c190
All Dimensions in mm
A
M
J
LD
B C
H
K
G
TOP VIEW
C
EB
c97