P-Channel JFET
J270 – J271 / SST270 – SST271
FEATURES
••Surfa ce M ount
APPLICATIONS
••P-Channel Amplifier
DESCRIPTION
The J270/SST270 Series is an all-purpose amplifier for
designs requiring P-channel operation. These dev ices f eature
high gain, low noise and tight VGS(OFF) limits for simple ci rcuit
design. They are available in low-cost SOT-23 and TO-92
packages and are fully compatible with automatic insertion
techniques.
ORDERING INFORMATION
Part Pac ka ge T em perature Range
J270-271 Pla st ic TO-92 -55 oC to +135oC
SST270-271 Plastic SOT-23 -55oC to +135oC
PIN CONFI G U RAT ION
LLC
DG
S
TO-92
SOT-23
PRODUCT MARKIN G (SOT-23)
SST270 P20
SST271 P21
1
2
3
TOP VIEW
GATE
SOURCE
DRAIN
1
2
3
BOTTOM VIEW
1
2
3
1
2
3
DRAIN
GATE
SOURCE
5508
CALOGIC LLC, 237 WHITNEY PLACE, FREMONT, CA 94539, 510-656-2900 PHONE, 510-651-1076 FAX DS043 REV A
J270 – J271 / SST270 – SST271
LLC
ABSOLUTE M AXIMUM R ATI NG S (TA = 2 5oC u nless ot he rwise no te d)
PARAMET ERS/T EST CONDIT IONS SYMBOL LIMI T UNIT
Gate-Drain V oltage VGD 30 V
Gate-Source V oltage VGS 30 V
Gate Current IG-50 mA
Power Dissipation PD350 mW
Pow er De r at i n g 2.8 mW/ oC
Oper ating Junc tion Tem peratu re TJ-55 t o 150 oC
Storage Temperature Tstg -55 t o 150 oC
Lead Temperat ur e (1/16" from cas e f or 10 seconds ) TL300 oC
ELECTRICAL CHARACTERISTIC S (TA = 25oC unless other wise noted)
SYMBOL PARAMETER TYP1270 271 UNIT TEST CONDITIONS
MIN MAX MIN MAX
STATIC
V(BR)GSS Gate-Sourc e Breakdown V oltage 45 30 30 VIG = 1µA, VDS = 0 V
VGS(OFF) Gate-Sourc e Cutoff Voltage 0.5 2.0 1.5 4 .5 VDS = -15V, ID = -1nA
IDSS Saturation Drain Current 2-2 -15 -6 -50 mA VDS = -15V, VGS = 0V
IGSS Gate Reverse Current 10 200 200 pA VGS = 20V, VDS = 0V
5nAT
A = 125oC
IGGate Operatin g Current 10 pA VDG = -15V, ID = -1mA
VGS(F) Gate-Sourc e Forward V o ltage -0.7 V IG = -1mA, VDS = 0V
DYNAMIC
gfs Common-Source Forw ard
Transconductance 615818 mSVDS = -15V, VGS = 0V
f = 1kHz
gos Common-Source Output
Conductance 200 500 µS
Ciss Common-Source Input Capacitance 20 pF VDS = -15V, VGS = 0V
f = 1 MHz
Crss Co mmon-Sourc e Revers e
Transfer Capacitance 4
enEquivalent Input Noise Vol t age 20 nV
√Hz VDS = -10V, VGS = 0V
f = 1kHz
NOTES: 1. For desig n aid o nly, n ot su bject to pro duct ion te sting .
2. Pulse test; PW = 300µs, duty cycle ≤ 3%.
CALOGIC LLC, 237 WHITNEY PLACE, FREMONT, CA 94539, 510-656-2900 PHONE, 510-651-1076 FAX DS043 REV A
