®
TAK CHEONG
SE M I CO N DU CTO R
500 mW DO-35 Hermetically
Sealed Glass Zener Voltage
Regulators
Absolute Maximum Ratings
Parameter
Power Dissipation
Storage Temperature Range
Operating Junction Temperature
Lead Temperature (1/16” from case for 10 seconds)
T
A
= 25°C unless otherwise noted
Value
500
-65 to +200
+200
+230
Units
mW
°C
°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
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
TC1N977B
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
47
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
2.7
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
105
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
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
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
35.8
March 2004
Page 1
TC1N957B through TC1N979B Series
®
TAK CHEONG
SE M I CO N DU CTO R
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
I
R
@ V
R
(µA)
Max
V
R
(Volts)
TC1N978B
51
2.5
125
1500
5
38.8
TC1N979B
56
2.2
150
2000
5
42.6
V
F
Forward Voltage = 1.5 V Maximum @
I
F
= 200 mA for all types
Notes:
1. The type numbers listed have zener voltage as shown and have a standard tolerance on the nominal zener voltage of ±5%.
Suffix A = ±10%, C = ±2% and D = ±1%.
2. For detailed information on price, availability and delivery of nominal zener voltages between the voltages shown and tighter
voltage tolerances, contact your nearest Tak Cheong Electronics representative.
3. The 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
or
I
ZK
) is superimposed to
I
ZT
or
I
ZK.
Electrical Symbol Definition
Symbol
V
Z
I
ZT
Z
ZT
I
ZK
Z
ZK
I
R
V
R
I
F
V
F
Parameter
Reverse Zener Voltage @
I
ZT
Typical Characteristics
I
(mA)
I
F
Reverse Current
Maximum Zener Impedance @
I
ZT
Reverse Current
Maximum Zener Impedance @
I
ZK
Reverse Leakage Current @
V
R
Breakdown Voltage
Forward Current
Forward Voltage @
I
F
(nA)
(mA)
(V)
V
Z
V
R
(mV)
I
R
I
ZT
V
F
V
Ordering Information
Device
TC1N9xxB
TC1N9xxB.TB
TC1N9xxB.TR
TC1N9xxB.TB26
TC1N9xxB
Package
Bulk
Tape and Ammo (52mm)
Tape and Reel (52mm)
Tape and Ammo (26mm)
Others (…contact Tak Cheong sales representatives)
Quantity
10,000
5,000
10,000
5,000
Axial-Lead Tape Packaging Standards
This axial-lead component’s packaging requirements use in automatic testing and assembly equipment. And this standard practices for
lead-tape packaging of axial-lead components meets the requirements of EIA Standard RS-296-D “Lead-taping of Components on Axial
Lead Configuration for Automatic Insertion”.
March 2004
Page 2
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