2N4856A データシートの表示（PDF） - Vishay Semiconductors
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2N4856A Datasheet PDF : 5 Pages
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N-Channel JFETs
2N4856A/4857A/4858A
Product Summary
Part
Number
2N4856A
2N4857A
2N4858A
VGS(off)
(V)
–4 to –10
–2 to –6
–0.8 to –4
V(BR)GSS Min
(V)
–40
–40
–40
IDSS Min
(mA)
50
20
8
rDS(on) Max
(W)
25
40
60
ID(off) Typ
(pA)
5
5
5
tON Typ
(ns)
4
4
4
Features
Benefits
D Low On-Resistance: 2N4856A <25 W
D Fast Switching—tON: 4 ns
D High Off-Isolation—ID(off): 5 pA
D Low Capacitance: 3 pF
D Low Insertion Loss
D Low Error Voltage
D High-Speed Analog Circuit Performance
D Negligible “Off-Error,” Excellent Accuracy
D Good Frequency Response
D Eliminates Additional Buffering
Applications
D Analog Switches
D Choppers
D Sample-and-Hold
D Normally “On” Switches
D Current Limiters
Description
The 2N4856A/4857A/4858A all-purpose JFET analog
switches offer low on-resistance, low capacitance, good
isolation, and fast switching.
Hermetically-sealed TO-206AA (TO-18) packaging allows
full military processing (see Military Information). For similar
products in TO-226AA (TO-92) and SOT-23 packages, see the
J/SST111 series data sheet. For similar duals, see the
2N5564/5565/5566 data sheet.
TOĆ206AA
(TOĆ18)
S
1
2
3
D
Top View
G and Case
Absolute Maximum Ratings
Gate-Drain, Gate-Source Voltage : (2N4856A-58A) . . . . . . . . . . –40 V
Gate Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
Lead Temperature (1/16” from case for 10 seconds) . . . . . . . . . . 300 _C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65 to 200_C
Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . –55 to 200_C
Power Dissipationa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.8 W
Notes
a. Derate 10 mW/_C for TC > 25_C
Updates to this data sheet may be obtained via facsimile by calling Siliconix FaxBack, 1-408-970-5600. Please request FaxBack document #70243.
Siliconix
1
S-52424—Rev. C, 14-Apr-97
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