®
TAK CHEONG
500 mW DO-35 Hermetically
Sealed Glass Zener Voltage
Regulators
Licensed by
ON Semiconductor
,
A trademark of
semiconductor
Components Industries, LLC for
Zener Technology
and
Products
.
Maximum Ratings
(Note 1)
Rating
Maximum Steady State Power Dissipation
@TL≤75℃,
Lead Length = 3/8”
Derate Above 75℃
Operating and Storage
Temperature Range
Symbol
P
D
Value
500
4.0
T
J
, T
stg
-65 to +200
Units
mW
mW/℃
°C
AXIAL LEAD
DO35
Note 1: Some part number series have lower JEDEC registered ratings.
Specification Features:
Zener Voltage Range = 2.4V to 110V
ESD Rating of Clas 3 (>6 KV) per Human Body Model
DO-35 Package (DO-204AH)
Double Slug Type Construction
Metallurgical Bonded Construction
Cathode
Anode
Specification Features:
Case
:
Double slug type, hermetically sealed glass
Finish
:
All external surfaces are corrosion resistant and leads are readily solderable
Polarity :
Cathode indicated by polarity band
Mounting:
Any
Maximum Lead Temperature for Soldering Purposes
230℃, 1/16” from the case for 10 seconds
L
xxxx
L
xx
xx
B
= Logo
= 1NxxxxB Device Code
Ordering Information
Device
1NxxxxB
1NxxxxBRL
1NxxxxBRL2*
1NxxxxBRR1 !
1NxxxxBRR2 i
1NxxxxBTA
1NxxxxBTA2*
1NxxxxBRA1 !
1NxxxxBRA2 i
Package
Axial Lead
Axial Lead
Axial Lead
Lead Form
Lead Form
Axial Lead
Axial Lead
Axial Lead
Axial Lead
Quantity
3000 Units / Box
5000 Units / Tape & Reel
5000 Units / Tape & Reel
3000 Units / Radial Tape & Reel
3000 Units / Radial Tape & Reel
5000 Units / Tape & Ammo
5000 Units / Tape & Ammo
3000 Units / Radial Tape & Ammo
3000 Units / Radial Tape & Ammo
* The “2” suffix refer to 26mm tape spacing.
! “1”: Polarity band
up
with cathode lead off first.
i “2”: Polarity band
down
with cathode lead off first.
Devices listed in
bold italic
are Tak Cheong
Preferred
devices.
Preferred
devices are recommended choices
for future use and best overall value.
December 2005 / B
http://takcheong.com
1
1N5985B through 1N6025B Series
1N5985B through 1N6025B Series
ELECTRICAL CHARACTERISTICS
(T
A
= 25ºC unless
otherwise noted. V
F
= 1.5 V Max @ I
F
= 100mA for all types)
Symbol
V
Z
I
ZT
Z
ZT
I
Zk
I
R
V
R
I
F
V
F
I
ZM
Parameter
Reverse Zener Voltage @ I
ZT
Reverse Zener Current
Maximum Zener Impedance @ I
ZT
Reverse Zener Current
Reverse Leakage Current @ V
R
Reverse Voltage
Forward Current
Forward Voltage @ I
F
Maximum DC Zener Current
ELECTRICAL CHARACTERISTICS
(T
A
= 25ºC unless otherwise noted, V
F
= 1.5 V Max @ I
F
= 100mA for all types)
Zener Voltage
(Note 3.)
Device
(Note 2.)
Zener Impedance
(Note 4.)
@ I
ZT
Z
ZT
@ I
ZT
(Ω)
Ω
100
100
95
95
90
90
88
70
50
25
10
8
7
7
10
15
18
22
25
32
Z
ZK
@ I
ZK
(Ω)
Ω
1800
1900
2000
2200
2300
2400
2500
2200
2050
1800
1300
750
600
600
600
600
600
600
600
600
(mA)
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
Leakage Current
I
R
@ V
R
(µA)
µ
100
75
50
25
15
10
5
3
2
2
1
1
0.5
0.5
0.1
0.1
0.1
0.1
0.1
0.1
(Volts)
1
1
1
1
1
1
1
1.5
2
3
4
5.2
6
6.5
7
8
8.4
9.1
9.9
11
I
ZM
(Note 5.)
Device
Marking
1N5985B
1N5986B
1N5987B
1N5988B
1N5989B
1N5990B
1N5991B
1N5992B
1N5993B
1N5994B
1N5995B
1N5996B
1N5997B
1N5998B
1N5999B
1N6000B
1N6001B
1N6002B
1N6003B
1N6004B
V
Z
(Volts)
Min
2.28
2.565
2.85
3.135
3.42
3.705
4.085
4.465
4.845
5.32
5.89
6.46
7.125
7.79
8.645
9.5
10.45
11.4
12.35
14.25
Nom
2.4
2.7
3
3.3
3.6
3.9
4.3
4.7
5.1
5.6
6.2
6.8
7.5
8.2
9.1
10
11
12
13
15
Max
2.52
2.835
3.15
3.465
3.78
4.095
4.515
4.935
5.355
5.88
6.51
7.14
7.875
8.61
9.555
10.5
11.55
12.6
13.65
15.75
(mA)
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
(mA)
208
185
167
152
139
128
116
106
98
89
81
74
67
61
55
50
45
42
38
33
1N5985B
1N5986B
1N5987B
1N5988B
1N5989B
1N5990B
1N5991B
1N5992B
1N5993B
1N5994B
1N5995B
1N5996B
1N5997B
1N5998B
1N5999B
1N6000B
1N6001B
1N6002B
1N6003B
1N6004B
2. TOLERANCE AND TYPE NUMBER DESIGNATION (V
Z
)
The type numbers listed have a standard tolerance on the nominal zener voltage of
±5%.
3. ZENER VOLTAGE (V
Z
) MEASUREMENT
Nominal zener voltage is measured with the device junction in the thermal equilibrium at the lead temperature (T
L
) at 30°C
±1°C
and 3/8” lead length.
4. ZENER IMPEDANCE (Z
Z
) DERIVATION
Z
ZT
and Z
ZK
are measured by dividing the AC voltage drop across the device by the AC current applied. The specified limits
are for I
Z(AC)
= 0.1 I
Z(DC)
with AC frequency = 60Hz.
5. MAXIMUM ZENER CURRENT RATINGS (I
ZM
)
This data was calculated using nominal voltages. The maximum current handling capability on a worst case basis is limited
by the actual zener voltage at the operation point and the power derating curve.
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2
1N5985B through 1N6025B Series
ELECTRICAL CHARACTERISTICS
(T
A
= 25ºC unless otherwise noted, V
F
= 1.5 V Max @ I
F
= 100mA for all types)
Zener Voltage
(Note 7.)
Device
(Note 6.)
Zener Impedance
(Note 8.)
@ I
ZT
Z
ZT
@ I
ZT
(Ω)
Ω
36
42
48
55
62
70
78
88
95
130
150
170
180
200
225
240
265
280
300
500
650
Z
ZK
@ I
ZK
(Ω)
Ω
600
600
600
600
600
600
600
700
700
800
900
1000
1300
1400
1400
1600
1700
2000
2300
2600
3000
(mA)
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
Leakage Current
I
R
@ V
R
(µA)
µ
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
(Volts)
12
14
15
17
18
21
23
25
27
30
33
36
39
43
47
52
56
62
69
76
84
I
ZM
(Note 9.)
Device
Marking
1N6005B
1N6006B
1N6007B
1N6008B
1N6009B
1N6010B
1N6011B
1N6012B
1N6013B
1N6014B
1N6015B
1N6016B
1N6017B
1N6018B
1N6019B
1N6020B
1N6021B
1N6022B
1N6023B
1N6024B
1N6025B
V
Z
(Volts)
Min
15.2
17.1
19
20.9
22.8
25.65
28.5
31.35
34.2
37.05
40.85
44.65
48.45
53.2
58.9
64.6
71.25
77.9
86.45
95
104.5
Nom
16
18
20
22
24
27
30
33
36
39
43
47
51
56
62
68
75
82
91
100
110
Max
16.8
18.9
21
23.1
25.2
28.35
31.5
34.65
37.8
40.95
45.15
49.35
53.55
58.8
65.1
71.4
78.75
86.1
95.55
105
115.5
(mA)
5
5
5
5
5
5
5
5
5
2
2
2
2
2
2
2
2
2
2
1
1
(mA)
31
28
25
23
21
19
17
15
14
13
12
11
9.8
8.9
8
7.4
6.7
6.1
5.5
5
4.5
1N6005B
1N6006B
1N6007B
1N6008B
1N6009B
1N6010B
1N6011B
1N6012B
1N6013B
1N6014B
1N6015B
1N6016B
1N6017B
1N6018B
1N6019B
1N6020B
1N6021B
1N6022B
1N6023B
1N6024B
1N6025B
6. TOLERANCE AND TYPE NUMBER DESIGNATION (V
Z
)
The type numbers listed have a standard tolerance on the nominal zener voltage of
±5%.
7. ZENER VOLTAGE (V
Z
) MEASUREMENT
Nominal zener voltage is measured with the device junction in the thermal equilibrium at the lead temperature (T
L
) at 30°C
±1°C
and 3/8” lead length.
8. ZENER IMPEDANCE (Z
Z
) DERIVATION
Z
ZT
and Z
ZK
are measured by dividing the AC voltage drop across the device by the AC current applied. The specified limits
are for I
Z(AC)
= 0.1 I
Z(DC)
with AC frequency = 60Hz.
9. MAXIMUM ZENER CURRENT RATINGS (I
ZM
)
This data was calculated using nominal voltages. The maximum current handling capability on a worst case basis is limited
by the actual zener voltage at the operation point and the power derating curve.
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3
1N5985B through 1N6025B Series
0.7
HEAT
SINKS
0.6
P D , MAXIMUM STEADY STATE
POWER DISSIPATION (WATTS)
0.5
0.4
3/8"
3/8"
0.3
0.2
0.1
0
0
20
40
60
80
100
120
140
160
180
200
T L , LEAD TEMPERATURE (°C)
Figure 1. Steady State Power Derating
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4
1N5985B through 1N6025B Series
APPLICATION NOTE - ZENER VOLTAGE
θ
JL, JUNCTION TO LEAD THERMAL RESISTANCE (
°
C/W)
Since the actual voltage available from a given zener
diode is temperature dependent, it is necessary to determine
junction temperature under any set of operating conditions
in order to calculate its value. The following procedure is
recommended:
Lead Temperature, T
L
, should be determined from:
T
L
=
θ
LA
P
D
+ T
A
.
500
400
L
300
L
2.4-60 V
200
θ
LA
is the lead-to-ambient thermal resistance (°C/W) and P
D
is the power dissipation. The value for
θ
LA
will vary and
depends on the device mounting method.
θ
LA
is generally 30
to 40°C/W for the various clips and tie points in common use
and for printed circuit board wiring.
The temperature of the lead can also be measured using a
thermocouple placed on the lead as close as possible to the
tie point. The thermal mass connected to the tie point is
normally large enough so that it will not significantly
respond to heat surges generated in the diode as a result of
pulsed operation once steady-state conditions are achieved.
Using the measured value of T
L
, the junction temperature
may be determined by:
T
J
= T
L
+
∆T
JL
.
62-200 V
100
0
0
0.2
0.4
0.6
0.8
1
L , LEAD LENGTH TO HEAT SINK (INCH)
Figure 2. Typical Thermal Resistance
1000
7000
5000
2000
1000
700
500
200
100
70
50
I R , LEAKAGE CURRENT (
µ
A)
20
10
7
5
2
1
0.7
0.5
TYPICAL LEAKAGE CURRENT
AT 80% OF NOMINAL
BREAKDOWN VOLTAGE
∆T
JL
is the increase in junction temperature above the lead
temperature and may be found from Figure 2 for dc power:
∆T
JL
=
θ
JL
P
D
.
For worst-case design, using expected limits of I
Z
, limits
of P
D
and the extremes of T
J
(∆T
J
) may be estimated.
Changes in voltage, V
Z
, can then be found from:
∆V
=
θ
VZ
T
J
.
θ
VZ
, the zener voltage temperature coefficient, is found
from Figures 4 and 5.
Under high power-pulse operation, the zener voltage will
vary with time and may also be affected significantly by the
zener resistance. For best regulation, keep current
excursions as low as possible.
Surge limitations are given in Figure 7. They are lower
than would be expected by considering only junction
temperature, as current crowding effects cause temperatures
to be extremely high in small spots, resulting in device
degradation should the limits of Figure 7 be exceeded.
+125°C
0.2
0.1
0.07
0.05
0.02
0.01
0.007
0.005
0.002
0.001
3
4
5
6
7
8
9
10
11
12
13
VZ , NOMINAL ZENER VOLTAGE (VOLTS)
14
15
+25°C
Figure 3. Typical Leakage Current
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5
