ZTK6.8 thru ZTK33
Vishay Semiconductors
formerly General Semiconductor
Voltage Stabilizers
DO-204AH (DO-35 Glass)
Features
• Temperature-Compensated Stabilizing Circuits
• Monolithic linear integrated circuits with
extremely short thermal run-in time producing a con-
stant temperature-compensated voltage. They are par-
ticularly suitable for stabilizing the tuning
voltage in radio and TV tuners employing voltage-
variable capacitance diodes.
Mechanical Data
Case: DO-35 Glass Case
Weight: approx. 0.13 g
Dimensions are in inches
Packaging codes/options:
and (millimeters)
D7/10K per 13” reel (52mm tape), 20K/box
D8/10K per Ammo tape, (52mm tape), 20K/box
Maximum Ratings (TA = 25°C unless otherwise noted)
Parameter
Symbol
Value
Unit
Operating Current (see Table “Characteristics”)
Junction temperature
TJ
150
°C
°C
Storage temperature range
TS
–20 to +150
Electrical and Thermal Characteristics (TA = 25°C unless otherwise noted)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Temperature Coefficient of the operating voltage
at IZ = 5 mA ±0.5 in the range of Tamb = 20 to 60°C
αvz
–10
–2
+5(1)
10–5/°C
–20(2)
–
–
s
t
Thermal Run-in-Time
th
–
–
Thermal resistance junction to ambient air
RθJA
400
°C/W
Operating Voltage
Dynamic resistance
Permissable operating
at T
= 25∞C(4)
at I = 5mA(3)
at I = 5mA
Z
Z
amb
Type
V (V)
Z
r
(W)
I max. (mA)
Z
zj
ZTK6.8
ZTK9
6.4 ... 7.1
8 ... 10
10(<25)
10(<25)
10(<25)
11(<25)
11(<25)
12(<25)
12(<25)
12(<25)
12(<25)
36
27
1
ZTK11
ZTK18
ZTK22
ZTK27
ZTK33A
ZTK33B
ZTK33C
10 ... 12
16 ... 20
20 ... 24
24 ... 30
30 ... 32
32 ... 34
34 ... 36
13
1
8
7
7
7
Notes: (1) Valid provided that leads are kept at ambient temperature at a distance of 8 mm from case
(2) At the end of this time ∆VZ has reached 90% of its final value ∆VZ max. ∆VZ max = VZ (a) – VZ (0),
where VZ (0) = VZ in the instant of turn-on and VZ (a) = VZ at thermal equilibrium
(3) Tested with pulses tp = 5ms
(4) Valid provided that leads are kept at ambient
temperature at a distance of 8mm from case.
Document Number 88426
02-May-02
www.vishay.com
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