®
TAK CHEONG
S EM IC O N D U C T OR
500 mW DO-35 Hermetically
Sealed Glass Zener Voltage
Regulators
Absolute Maximum Ratings
Parameter
Power Dissipation
Storage Temperature Range
Operating Junction Temperature
T
A
= 25°C unless otherwise noted
Value
500
-65 to +200
+200
Units
mW
°C
°C
AXIAL LEAD
DO35
DEVICE MARKING DIAGRAM
L
9x
xT
L
: Logo
Device Code : TC1N9xxT
Tolerance (T) : A =
10%
:
B = 5%
:
C = 2%
:
D = 1%
These ratings are limiting values above which the serviceability of the diode may be impaired.
Specification Features:
Zener Voltage Range 6.8 to 56 Volts
DO-35 Package (JEDEC)
Through-Hole Device Type Mounting
Hermetically Sealed Glass
Compression Bonded Construction
All External Surfaces Are Corrosion Resistant And Leads Are Readily Solderable
RoHS Compliant
Solder Hot Dip Tin (Sn) Lead Finish
Cathode Indicated By Polarity Band
Cathode
Anode
ELECTRICAL SYMBOL
Electrical Characteristics
Device Type
TC1N957B
TC1N958B
TC1N959B
TC1N960B
TC1N961B
TC1N962B
TC1N963B
TC1N964B
TC1N965B
TC1N966B
TC1N967B
TC1N968B
TC1N969B
TC1N970B
TC1N971B
TC1N972B
TC1N973B
TC1N974B
TC1N975B
TC1N976B
V
Z
@ I
ZT
(Volts)
Nominal
6.8
7.5
8.2
9.1
10
11
12
13
15
16
18
20
22
24
27
30
33
36
39
43
T
A
= 25°C unless otherwise noted
I
ZT
(mA)
18.5
16.5
15
14
12.5
11.5
10.5
9.5
8.5
7.8
7
6.2
5.6
5.2
4.6
4.2
3.8
3.4
3.2
3
Z
ZT
@ I
ZT
(Ω)
Max
4.5
5.5
6.5
7.5
8.5
9.5
11.5
13
16
17
21
25
29
33
41
49
58
70
80
93
Z
ZK
@ I
ZK
= 0.25mA
(Ω)
Max
700
700
700
700
700
700
700
700
700
700
750
750
750
750
750
1000
1000
1000
1000
1500
I
R
@ V
R
(µA)
Max
150
75
50
25
10
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
V
R
(Volts)
5.2
5.7
6.2
6.9
7.6
8.4
9.1
9.9
11.4
12.2
13.7
15.2
16.7
18.2
20.6
22.8
25.1
27.4
29.7
32.7
November 2006/ B
Page 1
TC1N957B through TC1N979B
®
TAK CHEONG
S EM IC O N D U C T OR
Electrical Characteristics
Device Type
V
Z
@ I
ZT
(Volts)
Nominal
T
A
= 25°C unless otherwise noted
I
ZT
(mA)
Z
ZT
@ I
ZT
(Ω)
Max
Z
ZK
@ I
ZK
= 0.25mA
(Ω)
Max
1500
1500
2000
I
R
@ V
R
(µA)
Max
5
5
5
V
R
(Volts)
35.8
38.8
42.6
TC1N977B
47
2.7
105
TC1N978B
51
2.5
125
TC1N979B
56
2.2
150
V
F
Forward Voltage = 1.5 V Maximum @
I
F
= 200 mA for all types
Notes:
1. TOLERANCE AND VOLTAGE DESIGNATION
The type numbers listed have zener voltage as shown and have a standard tolerance on the nominal zener voltage of ±5%. Suffix A =
±10%, Suffix C = ±2% and D = ±1%.
2. SPECIALS AVAILABLE INCLUDE
Nominal zener voltages between the voltages shown and tighter voltage, for detailed information on price, availability and delivery,
contact you nearest Tak Cheong representative.
3. ZENER VOLTAGE (V
Z
) MEASUREMENT
The zener voltage (V
Z
) is tested under pulse condition. The measured
V
Z
is guaranteed to be within specification with device junction
in thermal equilibrium.
4. ZENER IMPEDANCE (Z
Z
) DERIVATION
Zener impedance is derived from the 60-cycle ac voltage, which results when an ac current having an RMS value equal to 10% of the
dc zener current (I
ZT
) is superimposed to
I
ZT
.
November 2006/ B
Page 2
®
TAK CHEONG
S EM IC O N D U C T OR
Package Outline
Package
Case Outline
DO-35
DIM
Min
A
B
C
D
0.46
3.05
25.40
1.53
Millimeters
Max
0.55
5.08
38.10
2.28
DO-35
Inches
Min
0.018
0.120
1.000
0.060
Max
0.022
0.200
1.500
0.090
Notes:
1.
2.
All dimensions are within JEDEC standard.
DO35 polarity denoted by cathode band.
This datasheet presents technical data of Tak Cheong’s Zener Diodes. Complete specifications for the individual devices are
provided in the form of datasheets. A comprehensive Selector Guide is included to simplify the task of choosing the best set of
components required for a specific application. For additional information, please visit our website
http://www.takcheong.com.
Although information in this datasheet has been carefully checked, no responsibility for the inaccuracies can be assumed by Tak
Cheong. Please consult your nearest Tak Cheong’s sales office for further assistance.
Tak Cheong reserves the right to make changes without further notice to any products herein to further improve reliability,
function or design, cost and productivity.
TAK CHEONG
®
and
are registered trademarks of Tak Cheong Electronics (Holdings) Co., Ltd.
November 2006/ B
Page 3
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