VOLTAGE RANGE 6.2 TO 91.0 Volts STEADY STATE POWER 1.0 WATT
FEATURES
*
*
*
*
SURFACE MOUNT
GLASS PASSIVATED ZENER SILICON RECTIFIER
FM4735(A)W
THRU
FM4763(A)W
Plastic package has underwriters laboratory
Excellent clamping capability
Low zener impedance
Low regulation factor
DO-214AC
MECHANICAL DATA
* Epoxy : Device has UL flammability classification 94V-0
0.067 (1.70 )
0.051 (1.29 )
0.110 ( 2.79 )
0.086 ( 2.18 )
0.180 ( 4.57 )
0.160 ( 4.06 )
0.012 ( 0.305 )
0.006 ( 0.152 )
0.091 ( 2.31 )
0.067 ( 1.70 )
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25
o
C ambient temperature unless otherwise specified.
0.059 ( 1.50 )
0.035 ( 0.89 )
0.008 ( 0.203 )
0.004 ( 0.102 )
0.209 ( 5.31 )
0.185 ( 4.70 )
Dimensions in inches and (millimeters)
MAXIMUN RATINGS
( @ T
A
= 25
o
C unless otherwise noted )
CHARACTERISTICS
Power Dissipation
Thermal Resis
Tolarance
Forward Voltage@If = 100mA
Junction Temp
Storage Temp
ELECTRICAL CHARACTERISTICS
( @ T
A
= 25
o
C unless otherwise noted )
NOMINAL
ZENER
TYPE
VOLTAGE
VZ at IZT (NOTE 1)
(Volts)
Min.
FM4735W
FM4735AW
FM4736W
FM4736AW
FM4737W
FM4737AW
FM4738W
FM4738AW
FM4739W
FM4739AW
FM4740W
FM4740AW
5.58
5.89
6.12
6.46
6.75
7.13
7.38
7.79
8.19
8.65
9.0
9.5
Typ.
6.2
6.2
6.8
6.8
7.5
7.5
8.2
8.2
9.1
9.1
10.0
10.0
Max.
6.82
6.51
7.48
7.14
8.25
7.88
9.02
8.61
10.01
9.56
11.0
10.5
TEST
CURRENT
IZT
(mA)
41.0
41.0
37.0
37.0
34.0
34.0
31.0
31.0
28.0
28.0
25.0
25.0
MAXIMUM
DYNAMIC
IMPEDANCE
ZZT at IZT ZZK at IZK (NOTE 1) IZK
(ohms)
2.0
2.0
3.5
3.5
4.0
4.0
4.5
4.5
5.0
5.0
7.0
7.0
(ohms)
700
700
700
700
700
700
700
700
700
700
700
700
(mA)
1.00
1.00
1.00
1.00
0.50
0.50
0.50
0.50
0.50
0.50
0.25
0.25
MAXIMUM DC
REVERSE
LEAKAGE CURRENT
IR
(uA)
50.0
50.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
VR
(Volts)
3.0
3.0
4.0
4.0
5.0
5.0
6.0
6.0
7.0
7.0
7.6
7.6
MAXIMUM
SURGE
CURRENT
(NOTE 2) IRM
(mApk)
730.0
730.0
660.0
660.0
605.0
605.0
550.0
550.0
500.0
500.0
454.0
454.0
MAXIMUM
FORWARD
VOLTAGE
VF at 200mA
(Volts)
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
2007-10
SYMBOL
P
TOT
R
th
JA
-
Vf
T
J
T
stg
Ratings
1
170
5
1.0
-55 to 150
-55 to 150
UNITS
W
K / mW
%
V
o
o
C
C
ELECTRICAL CHARACTERISTICS
( At TA = 25
O
C unless otherwise noted)
NOMINAL
ZENER
TYPE
VOLTAGE
VZ at IZT (NOTE 1)
(Volts)
Min.
FM4741W
9.9
Typ.
11.0
11.0
12.0
12.0
13.0
13.0
15.0
15.0
16.0
16.0
18.0
18.0
20.0
20.0
22.0
22.0
24.0
24.0
27.0
27.0
30.0
30.0
33.0
33.0
36.0
36.0
39.0
39.0
43.0
43.0
47.0
47.0
51.0
51.0
56.0
56.0
62.0
62.0
Max.
12.1
11.55
13.2
12.6
14.3
13.65
16.5
15.75
17.6
16.8
19.8
18.9
22.0
21.0
24.2
23.1
26.4
25.2
29.7
28.35
33.0
31.5
36.3
34.65
39.6
37.8
42.9
40.95
47.3
45.15
51.7
49.35
56.1
53.55
61.6
58.8
68.2
65.1
TEST
CURRENT
IZT
(mA)
23.0
23.0
21.0
21.0
19.0
19.0
17.0
17.0
15.5
15.5
14.0
14.0
12.5
12.5
11.5
11.5
10.5
10.5
9.5
9.5
8.5
8.5
7.5
7.5
7.0
7.0
6.5
6.5
6.0
6.0
5.5
5.5
5.0
5.0
4.5
4.5
4.0
4.0
MAXIMUM
DYNAMIC
IMPEDANCE
ZZT at IZT ZZK at IZK (NOTE 1) IZK
(ohms)
8.0
8.0
9.0
9.0
10.0
10.0
14.0
14.0
16.0
16.0
20.0
20.0
22.0
22.0
23.0
23.0
25.0
25.0
35.0
35.0
40.0
40.0
45.0
45.0
50.0
50.0
60.0
60.0
70.0
70.0
80.0
80.0
95.0
95.0
110.0
110.0
125.0
125.0
(ohms)
700
700
700
700
700
700
700
700
700
700
750
750
750
750
750
750
750
750
750
750
1000
1000
1000
1000
1000
1000
1000
1000
1500
1500
1500
1500
1500
1500
2000
2000
2000
2000
(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
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
MAXIMUM DC
REVERSE
LEAKAGE CURRENT
IR
(uA)
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
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
VR
(Volts)
8.4
8.4
9.1
9.1
9.9
9.9
11.4
11.4
12.2
12.2
13.7
13.7
15.2
15.2
16.7
16.7
18.2
18.2
20.6
20.6
22.8
22.8
25.1
25.1
27.4
27.4
29.7
29.7
32.7
32.7
35.8
35.8
38.8
38.8
42.6
42.6
47.1
47.1
MAXIMUM
SURGE
CURRENT
(NOTE 2) IRM
(mApk)
414.0
414.0
380.0
380.0
344.0
344.0
305.0
305.0
285.0
285.0
250.0
250.0
225.0
225.0
205.0
205.0
190.0
190.0
170.0
170.0
150.0
150.0
135.0
135.0
125.0
125.0
115.0
115.0
110.0
110.0
95.0
95.0
90.0
90.0
80.0
80.0
70.0
70.0
MAXIMUM
FORWARD
VOLTAGE
VF at 200mA
(Volts)
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
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
FM4741AW 10.45
FM4742W
FM4742AW
FM4743W
10.8
11.4
11.7
FM4743AW 12.35
FM4744W
13.5
FM4744AW 14.25
FM4745W
FM4745AW
FM4746W
FM4746AW
FM4747W
FM4747AW
FM4748W
FM4748AW
FM4749W
FM4749AW
FM4750W
14.4
15.2
16.2
17.1
18.0
19.0
19.8
20.9
21.6
22.8
24.3
FM4750AW 25.65
FM4751W
FM4751AW
FM4752W
27.0
28.5
29.7
FM4752AW 31.35
FM4753W
FM4753AW
FM4754W
32.4
34.2
35.1
FM4754AW 37.05
FM4755W
38.7
FM4755AW 40.85
FM4756W
42.3
FM4756AW 44.65
FM4757W
45.9
FM4757AW 48.45
FM4758W
FM4758AW
FM4759W
FM4759AW
50.4
53.2
55.8
58.9
ELECTRICAL CHARACTERISTICS
( At TA = 25
O
C unless otherwise noted)
NOMINAL
ZENER
TYPE
VOLTAGE
VZ at IZT (NOTE 1)
(Volts)
Min.
FM4756W
FM4756AW
FM4757W
FM4757AW
FM4758W
FM4758AW
FM4759W
FM4759AW
FM4760W
FM4760AW
FM4761W
FM4761AW
FM4762W
FM4762AW
FM4763W
FM4763W
Notes :
42.3
44.65
45.9
48.45
50.4
53.2
55.8
58.9
61.2
67.66
67.5
71.25
73.8
77.9
81.9
86.45
Typ.
47.0
47.0
51.0
51.0
56.0
56.0
62.0
62.0
68.0
68.0
75.0
75.0
82.0
82.0
91.0
91.0
Max.
51.7
49.35
56.1
53.55
61.6
58.8
68.2
65.1
74.8
68.34
82.5
78.75
90.2
86.1
100.1
95.55
TEST
CURRENT
IZT
(mA)
5.5
5.5
5.0
5.0
4.5
4.5
4.0
4.0
3.7
3.7
3.3
3.3
3.0
3.0
2.0
2.0
MAXIMUM
DYNAMIC
IMPEDANCE
ZZT at IZT ZZK at IZK (NOTE 1) IZK
(ohms)
80.0
80.0
95.0
95.0
110.0
110.0
125.0
125.0
150.0
150.0
175.0
175.0
200.0
200.0
250.0
250.0
(ohms)
1500
1500
1500
1500
2000
2000
2000
2000
2000
2000
2000
2000
3000
3000
3000
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
MAXIMUM DC
REVERSE
LEAKAGE CURRENT
IR
(uA)
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
VR
(Volts)
35.8
35.8
38.8
38.8
42.6
42.6
47.1
47.1
51.7
51.7
56.0
56.0
62.2
62.2
69.2
69.2
MAXIMUM
SURGE
CURRENT
(NOTE 2) IRM
(mApk)
95.0
95.0
90.0
90.0
80.0
80.0
70.0
70.0
65.0
65.0
60.0
60.0
55.0
55.0
50.0
50.0
MAXIMUM
FORWARD
VOLTAGE
VF at 200mA
(Volts)
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
2007-10
1. Standard VZ Tolerance is 10% , Suffix " A " denotes 5% tolerance.
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 TL = 75
o
C.
4. "Fully ROHS compliant", "100% Sn plating (Pb-free)".
RATING AND CHARACTERISTICS CURVES ( FM4735(A)W THRU FM4763(A)W )
AVERAGE POWER DISSIPATION, (W)
1.0
0.8
0.6
0.4
0.2
P.C.B. MOUNTED ON
0
-35 -25
60Hz
RESISTIVE OR
INDUCTIVE LOAD
1000
DYNAMIC ZENER IMOPENDANCE, (W)
100
10
0.31 X 0.31 X 0.08" (8 X 8 X 2mm)
COPPER AREAS PADS
0
25
50
75
100
O
125
150
1
0.5
1
10
100
500
TERMINAL TEMPERATURE, ( C)
ZENER TEST CURRENT, (mA)
INSTANTANEOUS FORWARD CURRENT, (A)
PULSE WIDTH=300uS
1% DUTY CYCLE
INSTANTANEOUS REVERSE CURRENT,(uA)
10
FIG.1 MAXIMUM CONTINUOUS
POWER DISSIPATION
10
FIG.2 TYPICAL ZENER
IMPENDANCE
T
J
= 100
O
C
1
1
0.1
T
J
= 25
O
C
0.1
T
J
= 25
O
C
0.01
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0.01
0
20
40
60
80
100
INSTANTANEOUS FORWARD VOLTAGE, (V)
PERCENT OF RATED ZENER VOLTAGE, (%)
FIG.3 TYPICAL INSTANTANEOUS FORWARD
CHARACTERISTICS FOR FM4763W
TEMPERATURE COEFFICIENT, (mV/
O
C)
FIG.4 TYPICAL REVERSE CHARACTERISTICS
110
90
70
50
30
10
0
0
10
20
30
40
50
60
70
80
90
100
TESTED at RATED I
ZT
ZENER VOLTAGE, (V)
FIG.5 TYPICAL TEMPERATURE COEFFICIENTS
DISCLAIMER NOTICE
Rectron Inc reserves the right to make changes without notice to any product
specification herein, to make corrections, modifications, enhancements or other
changes. Rectron Inc or anyone on its behalf assumes no responsibility or liabi-
lity for any errors or inaccuracies. Data sheet specifications and its information
contained are intended to provide a product description only. "Typical" paramet-
ers which may be included on RECTRON data sheets and/ or specifications ca-
n and do vary in different applications and actual performance may vary over ti-
me. Rectron Inc does not assume any liability arising out of the application or
use of any product or circuit.
Rectron products are not designed, intended or authorized for use in medical,
life-saving implant or other applications intended for life-sustaining or other rela-
ted applications where a failure or malfunction of component or circuitry may di-
rectly or indirectly cause injury or threaten a life without expressed written appr-
oval of Rectron Inc. Customers using or selling Rectron components for use in
such applications do so at their own risk and shall agree to fully indemnify Rect-
ron Inc and its subsidiaries harmless against all claims, damages and expendit-
ures.
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