J/SST270 Series
Vishay Siliconix
P-Channel JFETs
J270 |
SST270 |
J271 |
SST271 |
PRODUCT SUMMARY
Part Number |
VGS(off) (V) |
V(BR)GSS Min (V) |
gfs Min (mS) |
IDSS Min (mA) |
J/SST270 |
0.5 to 2.0 |
30 |
6 |
–2 |
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J/SST271 |
1.5 to 4.5 |
30 |
8 |
–6 |
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FEATURES
DLow Cutoff Voltage: J270 <2 V
DHigh Input Impedance
DVery Low Noise
DHigh Gain
DESCRIPTION
BENEFITS |
APPLICATIONS |
D Full Performance from Low-Voltage Power |
D High-Gain, Low-Noise Amplifiers |
Supply: Down to 2 V |
D Low-Current, Low-Voltage Battery |
D Low Signal Loss/System Error |
Amplifiers |
D High System Sensitivity |
D Ultrahigh Input Impedance Pre-Amplifiers |
D High-Quality, Low-Level Signal Amplification |
D High-Side Switching |
The J/SST270 series consists of all-purpose amplifiers for designs requiring p-channel operation.
The TO-226AA (TO-92) plastic package provides a low-cost option, while the TO-236 (SOT-23) package
provides surface-mount capability. Both the J and SST series are available in tape-and-reel for automated assembly (see Packaging Information).
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TO-226AA |
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(TO-92) |
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TO-236 |
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(SOT-23) |
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G |
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D |
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S |
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Top View |
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Top View |
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SST270 (S0)* |
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J270 |
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SST271 (S1)* |
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*Marking Code for TO-236 |
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J271 |
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ABSOLUTE MAXIMUM RATINGS
Gate-Drain Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 V Gate-Source Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 V Gate Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55 to 150_C Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . –55 to 150_C
Lead Temperature (1/16” from case for 10 sec.) . . . . . . . . . . . . . . . . . . . 300_C Power Dissipationa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350 mW
Notes
a.Derate 2.8 mW/_C above 25_C
Document Number: 70258 |
www.vishay.com |
S-04233—Rev. D, 02-Jul-01 |
8-1 |
J/SST270 Series
Vishay Siliconix
SPECIFICATIONS (TA = 25_C UNLESS OTHERWISE NOTED) |
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Limits |
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J/SST270 |
J/SST271 |
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Typa |
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Parameter |
Symbol |
Test Conditions |
Min |
Max |
Min |
Max |
Unit |
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Static |
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Gate-Source Breakdown Voltage |
V(BR)GSS |
IG = 1 mA , VDS = 0 V |
45 |
30 |
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30 |
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V |
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Gate-Source Cutoff Voltage |
VGS(off) |
VDS = –15 V, ID = –1 nA |
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0.5 |
2.0 |
1.5 |
4.5 |
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Saturation Drain Currentb |
I |
V |
DS |
= –15 V, V = 0 V |
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–2 |
–15 |
–6 |
–50 |
mA |
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DSS |
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GS |
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Gate Reverse Current |
IGSS |
VGS = 20 V, VDS = 0 V |
10 |
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200 |
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200 |
pA |
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TA = 125_C |
5 |
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nA |
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Gate Operating Current |
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IG |
VDG = –15 V, ID = –1 mA |
10 |
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pA |
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Drain Cutoff Current |
ID(off) |
VDS = –15 V, VGS = 10 V |
–10 |
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Gate-Source Forward Voltage |
VGS(F) |
IG = –1 mA , VDS = 0 V |
–0.7 |
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V |
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Dynamic |
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Common-Source Forward Transconductance |
gfs |
VDS = –15 V, VGS = 0 V |
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6 |
15 |
8 |
18 |
mS |
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Common-Source Output Conductance |
gos |
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f = 1 kHz |
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200 |
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500 |
mS |
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Common-Source Input Capacitance |
Ciss |
VDS = –15 V, VGS = 0 V |
20 |
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pF |
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Common-Source |
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Crss |
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f = 1 MHz |
4 |
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Reverse Transfer Capacitance |
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VDG = –10 V, VGS = 0 V |
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nV⁄ |
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Equivalent Input Noise Voltage |
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20 |
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f = 1 kHz |
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√ |
Hz |
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Notes |
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a. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing. |
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PSCIA |
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b.Pulse test: PW v300 ms duty cycle v3%.
TYPICAL CHARACTERISTICS (TA = 25_C UNLESS OTHERWISE NOTED)
On-Resistance and Drain Current
vs. Gate-Source Cutoff Voltage
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200 |
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–100 |
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IDSS |
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I |
( Ω |
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160 |
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–80 |
DSS |
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OnResistance- |
120 |
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rDS |
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–60 |
Saturation – |
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Drain-Source |
80 |
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–40 |
Current Drain |
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– |
40 |
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–20 |
(mA) |
DS(on) |
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rDS @ ID = –1 mA, VGS = 0 V |
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r |
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IDSS @ VDS = –15 V, VGS = 0 V |
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0 |
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0 |
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0 |
2 |
4 |
6 |
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10 |
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VGS(off) – Gate-Source Cutoff Voltage (V)
Forward Transconductance and Output Conductance
vs. Gate-Source Cutoff Voltage
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18 |
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250 |
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(mS) |
15 |
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200 |
g |
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– Forward Transconductance |
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gfs |
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S) µ( Conductance Output – |
12 |
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gos |
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150 |
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9 |
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100 |
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50 |
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gfs and gos @ VDS = –15 V |
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g |
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VGS = 0 V, f = 1 kHz |
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0 |
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0 |
2 |
4 |
6 |
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VGS(off) – Gate-Source Cutoff Voltage (V)
www.vishay.com |
Document Number: 70258 |
8-2 |
S-04233— Rev. D, 02-Jul-01 |
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