JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO.

, LTD

SOT-23 Plastic-Encapsulate MOSFETS

BSS138 N-Channel 50-V(D-S) MOSFET

V(BR)DSS RDS(on)MAX ID SOT-23

 3.5Ω@10V 
50 V 220mA
6Ω@4.5V   1. GATE
2. SOURCE
3. DRAIN

FEATURE APPLICATION
z High density cell design for extremely low RDS(on) z Direct Logic-Level Interface: TTL/CMOS
z Rugged and Relaible z Drivers: Relays, Solenoids, Lamps, Hammers,Display,
Memories, Transistors, etc.
z Battery Operated Systems
z Solid-State Relays

MARKING Equivalent Circuit

Maximum ratings (Ta=25℃ unless otherwise noted)

Parameter Symbol Value Unit

Drain-Source Voltage VDS 50
V
Continuous Gate-Source Voltage VGSS ±20
Continuous Drain Current ID 0.22 A
Power Dissipation PD 0.35 W
Thermal Resistance from Junction to Ambient RθJA 357 ℃/W
Operating Temperature Tj 150
℃
Storage Temperature Tstg -55 ~+150

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MOSFET ELECTRICAL CHARACTERISTICS
Ta =25 ℃ unless otherwise specified

Parameter Symbol Test Condition Min Typ Max Units

Off characteristics
Drain-source breakdown voltage V(BR)DSS VGS = 0V, ID =250µA 50 V
Gate-body leakage IGSS VDS =0V, VGS =±20V ±100 nA
VDS =50V, VGS =0V 0.5 µA
Zero gate voltage drain current IDSS
VDS =30V, VGS =0V 100 nA
On characteristics
Gate-threshold voltage (note 1) VGS(th) VDS =VGS, ID =1mA 0.80 1.50 V
VGS =10V, ID =0.22A 3.50
Static drain-source on-resistance (note 1) RDS(on) Ω
VGS =4.5V, ID =0.22A 6
Forward transconductance (note 1) gFS VDS =10V, ID =0.22A 0.12 S
Dynamic characteristics (note 2)
Input capacitance Ciss 27
Output capacitance Coss VDS =25V,VGS =0V, f=1MHz 13 pF
Reverse transfer capacitance Crss 6
Switching characteristics
Turn-on delay time (note 1,2) td(on) 5
Rise time (note 1,2) tr VDD=30V, VDS=10V, 18
ns
Turn-off delay time (note 1,2) td(off) ID =0.29A,RGEN=6Ω 36
Fall time (note 1,2) tf 14
Drain-source body diode characteristics
Body diode forward voltage (note 1) VSD IS=0.44A, VGS = 0V 1.4 V
Notes:
1. Pulse Test ; Pulse Width ≤300µs, Duty Cycle ≤2%.
2. These parameters have no way to verify.

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 Typical Characteristics
Output Characteristics Transfer Characteristics
2.0 1.2
Ta=25℃
VGS=3V,4V,5V,6V VDS=3V
Pulsed
Pulsed
VGS=10V 1.0

1.5

(A)
Ta=25℃
(A)

VGS=5V 0.8

ID
ID

DRAIN CURRENT
Ta=100℃
DRAIN CURRENT

1.0 0.6
VGS=4V

0.4

0.5
VGS=3V

0.2

VGS=2V
0.0 0.0
0 1 2 3 4 5 0 1 2 3 4 5

DRAIN TO SOURCE VOLTAGE VDS (V) GATE TO SOURCE VOLTAGE VGS (V)

RDS(ON) —— ID RDS(ON) —— VGS

1.5 6

Ta=25℃ Pulsed
1.4
Pulsed
5 ID=500mA
1.3
VGS=4.5V
( )

( )

1.2
4
RDS(ON)

RDS(ON)

1.1
ON-RESISTANCE

ON-RESISTANCE

1.0 3
Ta=100℃
0.9
VGS=10V
2
0.8

0.7
1

0.6 Ta=25℃

0.5 0
0.2 0.4 0.6 0.8 1.0 0 2 4 6 8 10

DRAIN CURRENT ID (A) GATE TO SOURCE VOLTAGE VGS (V)

IS —— VSD Threshold Voltage

1 2.0

Pulsed
(V)

1.5
IS (A)

VTH

0.1 Ta=100℃
ID=250uA
THRESHOLD VOLTAGE

Ta=25℃
SOURCE CURRENT

1.0

0.01

0.5

1E-3 0.0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 25 50 75 100 125

SOURCE TO DRAIN VOLTAGE VSD (V) JUNCTION TEMPERATURE Tj (℃ )


3 E,May,2015
 SOT-23 Package Outline Dimensions

Dimensions In Millimeters Dimensions In Inches

Symbol
Min Max Min Max
A 0.900 1.150 0.035 0.045
A1 0.000 0.100 0.000 0.004
A2 0.900 1.050 0.035 0.041
b 0.300 0.500 0.012 0.020
c 0.080 0.150 0.003 0.006
D 2.800 3.000 0.110 0.118
E 1.200 1.400 0.047 0.055
E1 2.250 2.550 0.089 0.100
e 0.950 TYP 0.037 TYP
e1 1.800 2.000 0.071 0.079
L 0.550 REF 0.022 REF
L1 0.300 0.500 0.012 0.020
θ 0° 8° 0° 8°

SOT-23 Suggested Pad Layout

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SOT-23 Tape and Reel

SOT-23 Tape and reel

SOT-23 Embossed Carrier Tape Packaging Description:
SOT-23 parts are shipped in tape. The carrier
tape is made from a dissipative (carbon filled)
P0 P1 polycarbonate resin. The cover tape is a multilayer

d
C film (Heat Activated Adhesive in nature) primarily
composed of polyester film, adhesive layer, sealant,

E
and anti-static sprayed agent. These reeled parts in
A standard option are shipped with 3,000 units per 7"

F
W
or 17.8cm diameter reel. The reels are clear in color

B
and is made of polystyrene plastic (anti-static
coated).
A
P A A-A

Dimensions are in millimeter

Pkg type A B C d E F P0 P P1 W
SOT-23 3.15 2.77 1.22 Ø1.50 1.75 3.50 4.00 4.00 2.00 8.00

SOT-23 Tape Leader and Trailer

Trailer Tape Leader Tape
Components 100±2 Empty Pockets
50±2 Empty Pockets

SOT-23 Reel
D
W2
G

3000
H 2500
2000

1500

1000

500
D1

D2

W1

Dimensions are in millimeter

Reel Option D D1 D2 G H I W1 W2
7''Dia Ø178.00 54.40 13.00 R78.00 R25.60 R6.50 9.50 12.30

REEL Reel Size Box Box Size(mm) Carton Carton Size(mm) G.W.(kg)
3000 pcs 7 inch 30,000 pcs 203×203×195 120,000 pcs 438×438×220

www.cj-elec.com 5 E,May,2015