Frontier Electronics Corp.
667 E. COCHRAN STREET, SIMI VALLEY, CA 93065
TEL: (805) 522-9998
FAX: (805) 522-9989
E-mail:
frontiersales@frontierusa.com
Web:
http://www.frontierusa.com
1 WATT ZENER DIODE
1N4736A-LFR THRU 1N4764A-LFR
FEATURES
LOW COST
SMALL SIZE
ROHS
MECHANICAL DATA
CASE: DO-41 DIMENSIONS IN INCHES AND (MILLIMETERS)
TERMINALS: AXIAL LEADS, SOLDERABLE PER MIL-STD-202,
METHOD 208
POLARITY: COLOR BAND DENOTES CATHODE
MOUNTING POSITION: ANY
WEIGHT: 0.34 GRAMS
.205(5.2)
.166(4.2)
1.0(25.4)
MIN
1.0(25.4)
MIN
.107(2.7)
.080(2.0)
.034(0.9)
.028(0.7)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS RATINGS AT 25ºC AMBIENT TEMPERATURE UNLESS OTHERWISE SPECIFIED
STORAGE AND OPERATING TEMPERATURE RANGE -55ºC TO + 150ºC
ELECTRICAL CHARACTERISTICS (TA=25ºC UNLESS OTHERWISE NOTED) VF=1.2V MAX, IF = 200mA FOR ALL TYPES
MAXIMUM ZENER IMPEDANCE
LEAKAGE CURRENT
NOMINAL
TEST
ZENER
JEDEC
CURRENT
VOLTAGE
I
R
Z
ZK
@ I
ZK
I
ZK
V
R
Z
ZT
@ I
ZT
TYPE NO
I
ZT
V
Z
@ I
ZT
OHMS
OHMS
mA
VOLTS
μA
MAX
mA
VOLTS
1N4736A-LFR
1N4737A-LFR
1N4738A-LFR
1N4739A-LFR
1N4740A-LFR
1N4741A-LFR
1N4742A-LFR
1N4743A-LFR
1N4744A-LFR
1N4745A-LFR
1N4746A-LFR
1N4747A-LFR
1N4748A-LFR
1N4749A-LFR
1N4750A-LFR
1N4751A-LFR
1N4752A-LFR
1N4753A-LFR
1N4754A-LFR
1N4755A-LFR
1N4756A-LFR
1N4757A-LFR
1N4758A-LFR
1N4759A-LFR
1N4760A-LFR
1N4761A-LFR
1N4762A-LFR
1N4763A-LFR
1N4764A-LFR
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
56
62
68
75
82
91
100
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
4.5
4
3.7
3.3
3
2.8
2.5
3.5
4
4.5
5
7
8
9
10
14
16
20
22
23
25
35
40
45
50
60
70
80
95
110
125
150
175
200
250
350
700
700
700
700
700
700
700
700
700
700
750
750
750
750
750
1000
1000
1000
1000
1500
1500
1500
2000
2000
2000
2000
3000
3000
3000
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
0.25
0.25
0.25
0.25
0.25
0.25
0.25
10
10
10
10
10
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
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
42.6
47.1
51.7
56
62.2
69.2
76
SURGE
CURRENT
@ TA=25ºC
I
R
－
mA
660
605
550
500
454
414
380
344
304
285
250
225
205
190
170
150
135
125
115
110
95
90
80
70
65
60
55
50
45
NOTE︰SUFFIX "A" FOR ± 5%
1N4736A-LFR THRU 1N4764A-LFR
Page: 1
FIG.1A- Range for Units to 12 Volts
θV
Z
, TEMPERATURE COEFFICIENT
( mV/ ºC)
+10
+8
+6
+4
+2
0
-2
-4
2
3
4
5
6
7
8
9
10
11 12
V
Z
, ZENER VOLTAGE (VOLTS)
RANGE
V
Z
@I
ZT
FIG.1B- Range for Units to 12 to 100 Volts
θV
Z
, TEMPERATURE COEFFICIENT
( mV/ ºC)
100
70
50
30
20
10
7
5
3
2
1
10
20
30
50
V
Z
, ZENER VOLTAGE (VOLTS)
70
100
RANGE
V
Z
@I
ZT
+12
Figure 2. Temperature Coefficients (-55ºC to+150ºC temperature change; 90% of the units are in the ranges indicated.)
175
θ
JL,
JUNCTION TO LEAD THERMAL
θV
Z
, TEMPERATURE COEFFICIENT
( mV/ºC)
150
RESISTANCE (mV/℃/W)
125
100
75
50
25
0
0
0.1 0.2
0.3 0.4 0.5 0.6 0.7 0.8 0.9
L, LEAD LENGTH TO HEAT SINK (INCHES)
1.0
+6
+4
+2
0
1mA
V
Z
@I
Z
T
A
=25ºC
20mA
0.01mA
-2
-4
NOTE: BELOW 3 VOLTS AND ABOVE 8 VOLTS
CHANGES IN ZENER CURRENT DO NOT
EFFECT TEMPERATURE COEFFICIENTS
3
4
5
6
7
V
Z
, ZENER VOLTAGE (VOLTS)
8
Figure 3. Typical Thermal Resistance versus Lead Length
Z
Z
DYNAMIC IMPEDANCE (OHMS)
1000
700
500
200
100
70
50
20
10
7
5
2
1
1
2 3
5
7
10
20
30
50 70
100
V
Z,
ZENER CURRENT (mA)
Figure. 7 - Power Temperature De-rating Curve
P
D
,MAXIMUM DISSIPATION
(WATTS)
1.25
1.0
0.75
0.5
0.25
I
z
=1mA
Figure 4. Effect of Zener Current
400
300
200
0VBIAS
T
j
=25ºC
I
z
(ms)=0.1I
z
(do
)
f 60h
C, CAPACITANCE (
P
F)
100
0VBIAS
5mA
50
20
10
8
4
1
2
20mA
50%OF
BREAKDOWNBIAS
5
10
20
50
100
V
Z
, NOMINAL V
Z
(VOLTS)
0
20
40
60
80
100
120 140 160
T
L
, LEAD TEMPERATURE (
O
C)
180
200
1N4736A-LFR THRU 1N4764A-LFR
Page: 1
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