1N4728UR-1 thru 1N4764AUR-1,e3
(or MLL4728A-1 thru MLL4764A-1,e3)
METALLURGICALLY BONDED GLASS
SURFACE MOUNT 1.0 W ZENERS
S C O T T S D A L E D I V I S I O N
ELECTRICAL CHARACTERISTICS @ TC = 30oC
MAXIMUM
DYNAMIC
MAXIMUM
REVERSE
CURRENT
MAXIMUM
REGULATOR
CURRENT
TA = 50oC
IZM
MAXIMUM
KNEE
IMPEDANCE
(NOTE2)
ZZK @ IZK
Ohms
MAXIMUM
(SURGE)
CURRENT
(NOTE 3)
IS
ZENER
TEST
TEST
VOLTAGE
TEST
CURRENT
VOLTAGE CURRENT IMPEDANCE
TYPE
NUMBER
(NOTE 1 & 5)
(NOTE 4)
VZ
(Note 2)
ZZT @ IZT
Ohms
10
10
9
IZT
mA
76
69
64
58
53
49
45
41
37
34
31
28
25
23
21
IR @ VR
μA
100
100
50
10
10
10
10
10
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
VR
Volts
1
1
1
1
1
1
2
3
4
5
6
IZK
mA
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
0.5
0.5
Volts
3.3
3.6
3.9
4.3
4.7
5.1
5.6
6.2
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
mA
mA
1N4728AUR-1
1N4729AUR-1
1N4730AUR-1
1N4731AUR-1
1N4732AUR-1
1N4733AUR-1
1N4734AUR-1
1N4735AUR-1
1N4736AUR-1
1N4737AUR-1
1N4738AUR-1
1N4739AUR-1
1N4740AUR-1
1N4741AUR-1
1N4742AUR-1
1N4743AUR-1
1N4744AUR-1
1N4745AUR-1
1N4746AUR-1
1N4747AUR-1
1N4748AUR-1
1N4749AUR-1
1N4750AUR-1
1N4751AUR-1
1N4752AUR-1
1N4753AUR-1
1N4754AUR-1
1N4755AUR-1
1N4756AUR-1
1N4757AUR-1
1N4758AUR-1
1N4759AUR-1
1N4760AUR-1
1N4761AUR-1
1N4762AUR-1
1N4763AUR-1
1N4764AUR-1
276
252
234
217
193
178
162
146
133
121
110
100
91
83
76
69
61
57
50
45
41
38
34
30
27
25
23
22
19
18
16
14
13
12
11
10
9
400
400
400
400
500
550
600
700
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
1380
1260
1190
1070
970
890
810
730
660
605
550
500
454
414
380
344
304
285
250
225
205
190
170
150
135
125
115
110
95
9
8
7
5
2
3.5
4.0
4.5
5.0
7
8
9
10
14
16
20
22
23
25
35
40
45
7
0.5
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
56.0
62.2
69.2
76.0
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
19
17
15.5
14
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
2.8
2.5
50
60
70
80
95
90
80
70
65
60
55
50
45
110
125
150
175
200
250
350
NOTE 1: The type numbers shown with an “A” suffix have a +/-5% tolerance on the nominal Zener voltage. It is also available with suffix
“C” for +/-2%, and “D” for +/-1%. The absence of a suffix letter denotes +/- 10% tolerance.
NOTE 2: The Zener impedance is derived from the 60Hz ac voltage, which results when an ac current having an rms value equal to 10%
of the dc Zener current (IZT or IZK) is superimposed on IZT or IZK. Zener impedance is measured at two points to ensure a sharp
knee on the breakdown curve and eliminate unstable units.
NOTE 3: The reverse surge current is measured at 25oC ambient using a ½ square wave or equivalent sine wave pulse 1/120 second
duration superimposed on IZT.
NOTE 4: Voltage measurements to be performed 90 seconds after application of dc current.
NOTE 5: This product series has also been previously identified as the MLL4728A-1 thru MLL4764A-1 series. This alternate name may
still be used.
Copyright © 2005
10-18-2005 REV A
Microsemi
Scottsdale Division
Page 2
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
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