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 = 1.8V to 10V
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
MZ4xxx
L
MZ
4x
xx
= Logo
= Device Code
Ordering Information
Device
MZ4xxx
MZ4xxxRL
MZ4xxxRL2*
MZ4xxxRR1 !
MZ4xxxRR2 i
MZ4xxxTA
MZ4xxxTA2*
MZ4xxxRA1 !
MZ4xxxRA2 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
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1
MZ4614 through MZ4104 Series
®
MZ4614 through MZ4104 Series
Designed for 250mW applications requiring low leakage and
low leakage and low impedance. Zener impedance and zener
voltage specified for low-level operation at I
ZT
= 250µA.
ELECTRICAL CHARACTERISTICS
(T
A
= 25ºC unless
otherwise noted. V
F
= 1.1 V Max @ I
F
= 200mA for all types)
Symbol
V
Z
I
ZT
Z
ZT
I
ZM
I
R
V
R
I
F
V
F
Parameter
Reverse Zener Voltage @ I
ZT
Reverse Zener Current
Maximum Zener Impedance @ I
ZT
Maximum DC Zener Current
Reverse Leakage Current @ V
R
Reverse Voltage
Forward Current
Forward Voltage @ I
F
ELECTRICAL CHARACTERISTICS
(T
A
= 25ºC unless otherwise noted, V
F
= 1.1 V Max @ I
F
= 200mA for all types)
Zener Voltage
(Note 3 & 4.)
Device
(Note 2.)
Leakage Current
(Note 5.)
I
ZM
I
R
@ V
R
µ
(µA Max)
7.5
5
4
2
1
0.8
7.5
7.5
5
4
10
10
10
10
10
(Volts)
1
1
1
1
1
1
1.5
2
2
2
3
3
4
5
5.2
Zener Impedance
(Note 6.)
Z
ZT
@ I
ZT
(Ω Max)
Ω
1200
1250
1300
1400
1500
1600
1650
1700
1650
1600
1550
1500
1400
1200
200
Device
Marking
MZ4614
MZ4615
MZ4616
MZ4617
MZ4618
MZ4619
MZ4620
MZ4621
MZ4622
MZ4623
MZ4624
MZ4625
MZ4626
MZ4627
MZ4099
V
Z
(Volts)
Min
1.71
1.9
2.09
2.28
2.565
2.85
3.135
3.42
3.705
4.085
4.465
4.845
5.32
5.89
6.46
Nom
1.8
2
2.2
2.4
2.7
3
3.3
3.6
3.9
4.3
4.7
5.1
5.6
6.2
6.8
Max
1.89
2.1
2.31
2.52
2.835
3.15
3.465
3.78
4.095
4.515
4.935
5.355
5.88
6.51
7.14
(mA)
120
110
100
95
90
85
80
75
70
65
60
55
50
45
35
MZ4614
MZ4615
MZ4616
MZ4617
MZ4618
MZ4619
MZ4620
MZ4621
MZ4622
MZ4623
MZ4624
MZ4625
MZ4626
MZ4627
MZ4099
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. 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.
5. REVERSE LEAKAGE CURRENT (I
R
)
Reverse leakage current are guaranteed and measured at V
R
shown on the table.
6. ZENER IMPEDANCE (Z
ZT
) DERIVATION
The zener impedance is derived from the 60 cycle ac voltage, which results when an AC current having an rms value to 10%
of the DC zener current (I
ZT
) is superimposed on I
ZT
.
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2
MZ4614 through MZ4104 Series
ELECTRICAL CHARACTERISTICS
(T
A
= 25ºC unless otherwise noted, V
F
= 1.1 V Max @ I
F
= 200mA for all types)
Zener Voltage
(Note 8 & 9.)
Device
(Note 7.)
Leakage Current
(Note 10.)
I
R
@ V
R
µ
(µA Max)
10
1
1
1
1
(Volts)
5.7
6.3
6.7
7
7.6
Zener Impedance
(Note 11.)
Z
ZT
@ I
ZT
(Ω Max)
Ω
200
200
200
200
200
Device
Marking
MZ4100
MZ4101
MZ4102
MZ4103
MZ4104
V
Z
(Volts)
Min
7.125
7.79
8.265
8.645
9.5
Nom
7.5
8.2
8.7
9.1
10
Max
7.875
8.61
9.135
9.555
10.5
@ I
ZM
(mA)
31.8
29
27.4
26.2
24.8
MZ4100
MZ4101
MZ4102
MZ4103
MZ4104
7. TOLERANCE AND TYPE NUMBER DESIGNATION (V
Z
)
The type numbers listed have a standard tolerance on the nominal zener voltage of
±5%.
8. 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.
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.
10. REVERSE LEAKAGE CURRENT (I
R
)
Reverse leakage current are guaranteed and measured at V
R
shown on the table.
11. ZENER IMPEDANCE (Z
ZT
) DERIVATION
The zener impedance is derived from the 60 cycle ac voltage, which results when an AC current having an rms value to
10% of the DC zener current (I
ZT
) is superimposed on I
ZT
.
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3
MZ4614 through MZ4104 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
MZ4614 through MZ4104 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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