1N4736A SERIES
SILICON ZENER DIODE
VOLTAGE
6.8 to 51 Volts
FEATURES
• Low profile package
• Built-in strain relief
• Low inductance
• High temperature soldering : 260°C /10 seconds at terminals
• Plastic package has Underwriters Laboratory Flammability
Classification 94V-O
0.205(5.2)
0.160(4.1)
0.034(0.86)
0.028(0.71)
POWER
1.0 Watts
• In compliance with EU RoHS 2002/95/EC directives
MECHANICAL DATA
1.0(25.4)MIN.
• Case: Molded plastic DO-41
• Epoxy:UL 94V-O rate flame retardant
• Terminals: Axial leads, solderable per MIL-STD-750, Method 2026
guaranteed
• Polarity: Color band denotes positive end
• Mounting position:Any
• Weight: 0.012 ounce, 0.3 gram
• Packing information
B
- 1K per Bulk box
T/R - 5K per 13" paper Reel
T/B - 2.5K per horiz. tape & Ammo box
0.107(2.7)
0.080(2.0)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25°C ambient temperature unless otherwise specified.
Parameter
Power Dissipation at Tamb = 25
Junction Temperature
Storage Temperature Range
O
Symbol
Value
1*
-55 to + 150
-55 to + 150
Units
W
O
C
P
TOT
T
J
T
STG
C
C
O
*Valid provided that leads at a distance of 10mm from case are kept at ambient temperature.
May 31,2011-REV.07
PAGE . 1
1N4736A SERIES
N o m i n a l Ze n e r Vo l t a g e
Part Number
N o m. V
1.0 Watt ZENER
1N4736A
1N4737A
1N4738A
1N4739A
1N4740A
1N4741A
1N4742A
1N4743A
1N4744A
1N4745A
1N4746A
1N4747A
1N4748A
1N4749A
1N4750A
1N4751A
1N4752A
1N4753A
1N4754A
1N4755A
1N4756A
1N4757A
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
51
6.46
7.13
7.79
8.65
9.5
10.45
11.4
12.35
14.25
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
7.14
7.88
8.61
9.56
10.5
11.55
12.6
13.65
15.75
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
3.5
4
4.5
5
7
8
9
10
14
16
20
22
23
25
35
40
45
50
60
70
80
95
V
Z
@ I
ZT
Min . V
Ma x . V
Ω
M a x i m u m Ze n e r I m p e d a n c e
Z
ZT
@ I
ZT
mA
Ω
700
700
700
700
700
700
700
700
700
700
750
750
750
750
750
1000
1000
1000
1000
1500
1500
1500
Z
ZK
@ I
ZK
mA
M a x i m u m Leakage Current
I
R
@ V
R
uA
V
Marking
C ode
D O-4 1
37
34
31
28
25
23
21
19
17
15.5
14
12.5
11.5
10.5
9.5
8.5
7.5
7
6.5
6
5.5
5
1
0.5
0.5
0.5
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
5
5
5
0.5
0.5
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
4
5
6
7
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
38.8
1N4736A
1N4737A
1N4738A
1N4739A
1N4740A
1N4741A
1N4742A
1N4743A
1N4744A
1N4745A
1N4746A
1N4747A
1N4748A
1N4749A
1N4750A
1N4751A
1N4752A
1N4753A
1N4754A
1N4755A
1N4756A
1N4757A
May 31,2011-REV.07
PAGE . 2
1N4736A SERIES
C
J
, Junction Capacitance (pF)
1000
0V BIAS
1V BIAS
100
50% VZ BIAS
1.0
P
D
, Maximum Power
Dissipation(Watts)
0.75
0.5
0.25
0
0
20
40
60
80
100
120
140 160 180
200
10
1
10
100
T
L
, Lead Temperature(
o
C)
V
Z
, Zener Voltage (V)
Fig.1 Steady-State Power Derating Curve
Fig.2 Typical Junction Capacitance
10000.0
I
F
, Forward Current (mA)
I
R
, Leakage Current(nA)
1000.0
100.0
10.0
1.0
0.1
0
Typical Leakage Current at 80% of
Nominal Breakdown Voltage
1000
T
J
= 150°C
100
T
J
=
125°C
T
J
= 25°C
T
J
= 125°C
T
J
= 25°C
10
T
J
= 75°C
1
0.4
0.5
0.6
0.7
0.8
0.9
1
1.1
10
20
30
40
50
60
V
Z
, Nominal Zener Voltage (V)
V
F
, Forward Voltage (V)
Fig.3 Typical Leakage Characteristics
Zz,Dynamic Impedance (OHMS)
1000
Fig.4 Typical Forward Characteristics
Zz,Dynamic Impedance (OHMS)
1000
100
51V
100
I
Z
=1mA
10
I
Z
=5mA
I
Z
=20mA
0.1
1
10
100
10
22V
1
6.8V
1
0.1
1
10
100
I
Z
, Zener Current (mA)
V
Z
, Zener Voltage (V)
Fig.5 Typical Effect Of Zener Current On Zener
Impedance
Fig.6 Typical Effect Of Zener Voltage On Zener
Impedance
May 31,2011-REV.07
PAGE . 3
1N4736A SERIES
θ
JL
, Junction To Lead Thermal
Resistance (
o
C / W )
120
100
80
60
40
20
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
100
θV
Z
, Temperature
o
Coefficient (mV/ C)
10
1
1
10
100
L, Lead Length To Heat Sink (Inches)
Fig.7 Thermal Resistance Versus Lead Length
V
Z
, Zener Voltage (V)
Fig.8 Temperature Coefficient (+25
o
C To +150
o
C Temperature
Range ; 90% Of The Units Are In The Ranges Indicated)
May 31,2011-REV.07
PAGE . 4
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