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2N4856-7-8A
2N4856/A, 2N4857/A, 2N4858/A N-Channel JFET
Features
• InterFET N0132S Geometry • Low Noise: 1.2 nV/√Hz Typical • Fast Switching • RoHS Compliant • SMT, TH, and Bare Die Package options.
Applications
• Choppers • Commutators • Analog Switches
Description
The -40V InterFET 2N4856/A, 2N4857/A, and 2N4858/A JFET’s are targeted for very low noise switching applications for mid to high frequency designs. Gate leakages are typically 50pA at room temperatures. The TO-18 package is hermetically sealed and suitable for military applications.
Gate/Case Drain 2 Source
TO-18 Bottom View
3
1
Source 1 Drain 2
SOT23 Top View 3 Gate
Gate 3 Drain 2 Source 1
TO-92 Bottom View
Product Summary
Parameters BVGSS Gate to Source Breakdown Voltage IDSS Drain to Source Saturation Current VGS(off) Gate to Source Cutoff Voltage
2N4856/A Min 2N4857/A Min 2N4858/A Min Unit
-40
-40
-40
V
50
20
8
mA
-4
-2
-0.8
V
Ordering Information Custom Part and Binning Options Available
Part Number
Description
2N4856; 2N4857; 2N4858
2N4856A; 2N4857A; 2N4858A
Through-Hole
PN4856; PN4857; PN4858
PN4856A; PN4857A; PN4858A
Through-Hole
SMP4856; SMP4857; SMP4858
SMP4856A; SMP4857A; SMP4858A
Surface Mount
SMP4856TR; SMP4857TR; SMP4858TR 7“ Tape and Reel: Max 3,000 Pieces
SMP4856ATR; SMP4857ATR; SMP4858ATR 13” Tape and Reel: Max 9,000 Pieces
2N4856COT; 2N4857COT; 2N4858COT Chip Orientated Tray
2N4856ACOT; 2N4857ACOT; 2N4858ACOT (COT Waffle Pack)
2N4856CFT; 2N4857CFT; 2N4858CFT
Chip Face-up Tray
2N4856ACFT; 2N4857ACFT; 2N4858ACFT (CFT Waffle Pack)
Case TO-18 TO-92 SOT23 SOT23 COT
CFT
Packaging
Bulk
Bulk
Bulk Minimum 1,000 Pieces
Tape and Reel
400/Waffle Pack
400/Waffle Pack
Disclaimer: It is the Buyers responsibility for designing, validating and testing the end application under all field use cases and extreme use conditions. Guaranteeing the application meets required standards, regulatory compliance, and all safety and security requirements is the responsibility of the Buyer. These resources are subject to change without notice.
IF35061.R00
InterFET
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2N4856-7-8A
Electrical Characteristics
Maximum Ratings (@ TA = 25°C, Unless otherwise specified)
Parameters VRGS Reverse Gate Source and Gate Drain Voltage IFG Continuous Forward Gate Current PD Continuous Device Power Dissipation P Power Derating TJ Operating Junction Temperature TSTG Storage Temperature
Value -40 50 1800 10
-55 to 125 -65 to 150
Unit V mA
mW mW/°C
°C °C
Static Characteristics (@ TA = 25°C, Unless otherwise specified, Highlighted values = A variant)
2N4856/A 2N4857/A 2N4858/A
Parameters
Conditions
Min Max Min Max Min Max Unit
V(BR)GSS
Gate to Source Breakdown Voltage
IG = -1μA,VDS = 0V
-40
-40
-40
V
IGSS
Gate to Source Reverse Current
VGS = -20V, VDS = 0V, TA = 25°C VGS = -20V, VDS = 0V, TA = 150°C
-250 -500
-200 -500
-200 pA -500 nA
VGS(OFF)
Gate to Source Cutoff Voltage
VDS = 15V, ID = 0.5nA
-4 -10 -2 -6 -0.8 -4
V
IDSS
Drain to Source Saturation Current
VDS = 15V, VGS = 0V (Pulsed)
50
20 100 8 80 mA
ID(OFF) Drain Cutoff Current
VDS = 15V, VGS = -10V, TA = 25°C VDS = 15V, VGS = -10V, TA = 150°C
250 500
250 500
250 pA 500 nA
VDS(ON)
Drain to Source ON Voltage
VGS = 0V, ID = ( )
0.75
0.5
(20)
(10)
0.5 V (5) mA
Dynamic Characteristics (@ TA = 25°C, Unless otherwise specified, Highlighted values = A variant)
2N4856/A 2N4857/A 2N4858/A
Parameters
Conditions
Min Max Min Max Min Max
RDS(ON)
Drain to Source ON Resistance
VGS = 0V, ID = 0A, f = 1kHz
25
40
60
Ciss Input Capacitance
VDS = 0V, VGS = -10V, f = 1MHz
18
18
18
10
10
10
Crss
Reverse Transfer Capacitance
VDS = 0V, VGS = -10V, f = 1MHz
8
8
8
4
3.5
3.5
6
6
10
td(on) Turn-On Delay Time
VDD = 10V, VGS(ON) = 0V ID(ON) = ( ), VGS(OFF) = [ ]
5
6
8
(20)
(10)
(5)
[-10]
[-6]
[-4]
3
4
10
tr
Rise Time
VDD = 10V, VGS(ON) = 0V ID(ON) = ( ), VGS(OFF) = [ ]
3
4
8
(20)
(10)
(5)
[-10]
[-6]
[-4]
25
50
100
td(off) Turn-Off Delay Time
VDD = 10V, VGS(ON) = 0V ID(ON) = ( ), VGS(OFF) = [ ]
25
40
80
(20)
(10)
(5)
[-10]
[-6]
[-4]
Unit Ω
pF
pF
ns (mA) [V]
ns (mA) [V]
ns (mA) [V]
2N4856-7-8A
Document Number: IF35061.R00
2 of 5
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InterFET Corporation
December, 2018
InterFET
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SOT23 (TO-236AB) Mechanical and Layout Data
Package Outline Data
2N4856-7-8A
Suggested Pad Layout
1. All linear dimensions are in millimeters. 2. Package weight approximately 0.12 grams 3. Molded plastic case UL 94V-0 rated 4. For Tape and Reel specifications refer to
InterFET CTC-021 Tape and Reel Specification, Document number: IF39002 5. Bulk product is shipped in standard ESD shipping material 6. Refer to JEDEC standards for additional information.
2N4856-7-8A
Document Number: IF35061.R00
1. All linear dimensions are in .