U1898 Datasheet, PDF (1/3 Pages) Fairchild Semiconductor – N-Channel Switch

U1898
N-Channel Switch
• This device is designed for low level analog switching, sample and
hold circuits and chopper stabalized amplifiers.
• Sourced from Process 51.
• See J111 for characteristics.
1
TO-92
1. Drain 2. Source 3. Gate
Absolute Maximum Ratings* T_a=25°C unless otherwise noted
Symbol
Parameter
V_DG
Drain-Gate Voltage
V_GS
Gate-Source Voltage
I_GF
Forward Gate Current
T_J, T_STG
Operating and Storage Junction Temperature Range
* This ratings are limiting values above which the serviceability of any semiconductor device may be impaired.
Ratings
40
-40
50
-55 ~ 150
NOTES:
1) These rating are based on a maximum junction temperature of 150 degrees C.
2) These are steady limits. The factory should be consulted on applications involving pulsed or low duty cycle operations.
Units
V
V
mA
°C
Electrical Characteristics T_a=25°C unless otherwise noted
Symbol
Parameter
Test Condition
Off Characteristics
V_(BR)GS
Gate-Source Breakdown Voltage
V_GS(off)
Gate-Source Cutoff Voltage
I_DGO
Drain-Gate Leakage Current
On Characteristics
I_G = 1.0 µA, V_DS = 0
V_DS = 20 V, I_D = 1.0 nA
V_DG = 20 V, I_S = 0
I_DSS
Zero-Gate Voltage Drain Current *
r_DS(on)
Small Signal Characteristics
V_DS = 20 V, V_GS = 0
I_D = 1.0 mA, V_GS = 0
r_ds(on)
Drain-Source On Resistance
C_iss
Input Capacitance
C_rss
Reverse Transfer Capacitance
Switching Characteristics
V_DS = VGS = 0, f= 1.0 kHz
V_DS = 20, V_GS = 0, f = 1.0 MHz
V_GS = - 20 V, f = 1.0 MHz
t_on
Turn-On Time
t_off
Turn-Off Time
* Pulse Test: Pulse Width ≤ 300 µs, Duty Cycle ≤ 2.0%
I_D(on) = 6.0 mA
V_GS(off) = 6.0 V
Min.
-40
-2.0
15
Max.
-7.0
-200
50
50
16
5.0
35
60
Units
V
V
pA
mA
Ω
Ω
pF
pF
ns
ns
Thermal Characteristics T_a=25°C unless otherwise noted
Symbol
Parameter
P_D
Total Device Dissipation
Derate above 25°C
R_θJC
R_θJA
Thermal Resistance, Junction to Case
Thermal Resistance, Junction to Ambient
Max.
625
5.0
125
357
Units
mW
mW/°C
°C/W
°C/W
©2004 Fairchild Semiconductor Corporation
Rev. A, April 2004