RECTRON
SEMICONDUCTOR
TECHNICAL SPECIFICATION
FM4735W
THRU
FM4763W
SURFACE MOUNT ZENER SILICON RECTIFIER
VOLTAGE RANGE - 6.2 TO 91.0 Volts Steady State Power- 1.0 Watt
FEATURES
* Plastic package has underwriters laboratory
* Excellent clamping capability
* Low zener impedance
* Low regulation factor
SMX
Ratings at 25
o
C ambient temperature unless otherwise specified.
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25
o
C ambient temperature unless otherwise specified.
Dimensions in inches and (millimeters)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICE
MAXIMUM RATINGS
(At T
A
= 25 C unless otherwise noted)
o
TYPE
NOMINAL
ZENER
VOLTAGE
at I
ZT
V
Z
(NOTE 1)
TEST
CURRENT
I
ZT
(mA)
41.0
37.0
34.0
31.0
MAXIMUM DYNAMIC
IMPEDANCE
Z
ZT
at
I
ZT
(Ohms)
2.0
3.5
4.0
4.5
Z
ZK
at
(Ohms)
700
700
700
700
(NOTE 1)
I
ZK
MAXIMUM DC REVERSE
LEAKAGE CURRENT
I
R
(uA)
50.0
10.0
10.0
10.0
V
R
(Volts)
3.0
4.0
5.0
6.0
MAXIMUM
SURGE
CURRENT
(NOTE 2)
I
RM
(Volts)
FM4735W
FM4736W
FM4737W
FM4738W
6.2
6.8
7.5
8.2
(mA)
1.0
1.0
0.5
0.5
(mApk)
730.0
660.0
605.0
550.0
MAXIMUM
FORWARD
VOLTAGE
at 200mA
V
F
(Volts)
1.2
1.2
1.2
1.2
1998-8
TYPE
NOMINAL
ZENER
VOLTAGE
at I
ZT
V
Z
(NOTE 1)
MAXIMUM DYNAMIC
TEST
CURRENT
I
ZT
(mA)
IMPEDANCE
MAXIMUM DC REVERSE
LEAKAGE CURRENT
MAXIMUM
SURGE
CURRENT
(NOTE 2)
I
RM
(Volts)
FM4739W
FM4740W
FM4741W
FM4742W
FM4743W
FM4744W
FM4745W
FM4746W
FM4747W
FM4748W
FM4749W
FM4750W
FM4751W
FM4752W
FM4753W
FM4754W
FM4755W
FM4756W
FM4757W
FM4758W
FM4759W
FM4760W
FM4761W
FM4762W
FM4763W
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
Z
ZT
at
I
ZT
(Ohms)
5.0
7.0
8.0
9.0
10.0
14.0
16.0
20.0
22.0
23.0
25.0
35.0
40.0
45.0
50.0
60.0
70.0
80.0
95.0
110.0
125.0
150.0
175.0
200.0
250.0
Z
ZK
at
(Ohms)
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
(NOTE 1)
I
ZK
(mA)
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
I
R
(uA)
10.0
10.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
V
R
(Volts)
7.0
7.6
8.4
9.1
9.9
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
42.6
47.1
51.7
56.0
62.2
69.2
(mApk)
MAXIMUM
FORWARD
VOLTAGE
at 200mA
V
F
(Volts)
28.0
25.0
23.0
21.0
19.0
17.0
15.0
14.0
12.5
11.5
10.5
9.5
8.5
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.7
3.3
3.0
2.0
500.0
454.0
414.0
380.0
344.0
305.0
285.0
250.0
225.0
205.0
190.0
170.0
150.0
135.0
125.0
115.0
110.0
95.0
90.0
80.0
70.0
65.0
60.0
55.0
50.0
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1998-8
NOTES : 1. Standard voltage tolerance is 10%, Suffix “A” : + 5%
2. Surge current is a non-repetitive, 8.3ms pulse width square wave or equivalent sine-wave superimposed on
IZT
per JEDEC Method
3. Maximum steady state power dissipation is 1.0 watt at T
T
=75
o
C
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