DS30206 Rev. 3 - 2 1 of 5 BSS138W
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BSS138W
N-CHANNEL ENHANCEMENT
MODE FIELD EFFECT TRANSISTOR
Features
·Low On-Resistance
·Low Gate Threshold Voltage
·Low Input Capacitance
·Fast Switching Speed
Maximum Ratings @ TA = 25°C unless otherwise specified
Characteristic Symbol BSS138W Units
Drain-Source Voltage VDSS 50 V
Drain-Gate Voltage (Note 1) VDGR 50 V
Gate-Source Voltage Continuous VGSS ±20 V
Drain Current (Note 2) Continuous ID200 mA
Total Power Dissipation (Note 2) Pd200 mW
Thermal Resistance, Junction to Ambient RqJA 625 °C/W
Operating and Storage Temperature Range Tj,T
STG -55 to +150 °C
·Case: SOT-323, Molded Plastic
·Case Material - UL Flammability Rating 94V-0
·Moisture sensitivity: Level 1 per J-STD-020A
·Terminals: Solderable per MIL-STD-202,
Method 208
·Terminal Connections: See Diagram
·Marking Code (See Page 2): K38
·Ordering & Date Code Information: See Page 2
·Weight: 0.006 grams (approx.)
Mechanical Data
A
M
JL
ED
BC
H
K
G
GS
D
Electrical Characteristics @ TA = 25°C unless otherwise specified
Characteristic Symbol Min Typ Max Unit Test Condition
OFF CHARACTERISTICS (Note 3)
Drain-Source Breakdown Voltage BVDSS 50 75 ¾VVGS = 0V, ID = 250mA
Zero Gate Voltage Drain Current IDSS ¾¾0.5 µA VDS = 50V, VGS = 0V
Gate-Body Leakage IGSS ¾¾±100 nA VGS = ±20V, VDS = 0V
ON CHARACTERISTICS (Note 3)
Gate Threshold Voltage VGS(th) 0.5 1.2 1.5 V VDS =V
GS, ID = -250mA
Static Drain-Source On-Resistance RDS (ON) ¾1.4 3.5 WVGS = 10V, ID = 0.22A
Forward Transconductance gFS 100 ¾¾mS VDS =25V, ID = 0.2A, f = 1.0KHz
DYNAMIC CHARACTERISTICS
Input Capacitance Ciss ¾¾50 pF
VDS = 10V, VGS = 0V
f = 1.0MHz
Output Capacitance Coss ¾¾25 pF
Reverse Transfer Capacitance Crss ¾¾8.0 pF
SWITCHING CHARACTERISTICS
Turn-On Delay Time tD(ON) ¾¾20 ns VDD = 30V, ID = 0.2A,
RGEN = 50W
Turn-Off Delay Time tD(OFF) ¾¾20 ns
Note: 1. RGS £ 20KW.
2. 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 our website at http://www.diodes.com/datasheets/ap02001.pdf.
3. Short duration test pulse used to minimize self-heating effect.
SOT-323
Dim Min Max
A0.25 0.40
B1.15 1.35
C2.00 2.20
D0.65 Nominal
E0.30 0.40
G1.20 1.40
H1.80 2.20
J0.0 0.10
K0.90 1.00
L0.25 0.40
M0.10 0.18
a0°8°
All Dimensions in mm
Source
Gate
ra
n