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n-channel JFETs
current regulator diodes
H
Siliconix
designed for.
Current Regulation
Current Limiting
Biasing
Linear Ramp and Staircase
- o Generator
1ft
-t ABSOLUTE MAXIMUM RATINGS (25°C)
o Peak Operating Voltage .......................... 50 V
o1ft Forward Current ............................. 20 mA
-t Reverse Current.............................. 50 mA
Total Device Dissipation at 25°C Ambient
(Derate 3.27 mW;oC) ...................... 360 mW
Operating Temperature Range ............. -55 to 135°C
Storage Temperature Range............... -55 to 150°C
Lead Temperature Range
(1 /16" from case for 10 seconds) ..............300°C
Performance Curves NCL
See Section 4
BENEFITS
• Low Cost
• Simple Two Lead Current Source
• Simplifies Floating Current Sources
No Power Supplies Required
• Good Operating Current Tolerance
±20%
TO-92 (MODIFIED)
See Section 8
.ANODE
~
Plastic
-
CATHODE
CO
AC
Bottom View
c
A
ELECTRICAL CHARACTERISTICS (25°C unless otherwise noted)
Characteristic
J500 J501 J502 J503 J504 J505 Unit
Test Conditions
..2...
-- 2
3
S
T
A
4
,-
15-
T
I
C
6
7
1-
D
I~
V
N
9
IFI
POV
VL
ZFI
CF
Forward Current (Note 1)
Peak Operating Voltage
(Notes 1 and 2)
LImIting Voltage (Note 3)
Small·Signal DynamIc
Impedance (Note 1l
Anode·Cathode CapacItance
Min
Nominal
Max
0.192
0.240
0.288
0.264
0.330
0.396
0.344
0.430
0.516
0.448
0.560
0.672
0.600
0.750
0.900
0.800
1.000
1.200
mA
VF = 25 V
Min
Max
Typ
Min
Typ
Typ
50 50 50 50 50 50
IF = 1.1 IFI (Max)
1.2 13 15 1.7 1.9 2.1 V
IF = 0.9 IFI (Min)
08 0.9 1.1 1.2 1.4 1.5
4.0 22 15 12 0.8 05
Mn V F = 25 V. f = 1 kHz
8.0 6.0 4.4 3.4 2.5 1.9
2 2 2 2 2 2 pF VF=25V.f=1 MHt
NOTES:
1. Pulse test duration =2 ms.
2. MaxImum VF where IF < 1.1 IFI (Maxl is guaranteed
3. M,nomum VF required to Insure IF > 0.9 IFI(Min)·
Current· Limiter Diode
V·I Characteristic
I.
NCL
IF,
I
VR
VL
I.,
pov V.
3-60 Siliconix