1N4728AP thru 1N4764AP,e3 (PLASTIC)
Silicon 1 Watt Zener Diodes
SCOTTSDALE DIVISION
DESCRIPTION
The popular 1N4728AP thru 1N4764AP series of 1.0 watt Zeners provides
voltage regulation in a selection from 3.3 to 100 volts in 5% tolerances with
other tighter tolerances also available as identified by different suffix letters
in the part number. These plastic encapsulated Zeners are moisture
classified as Level 1 with no dry pack required. They are also available in
various military screening levels by adding a prefix identifier as described in
the Features below. These plastic molded Zeners with a P suffix provide a
lower thermal resistance compared to the glass-body (G suffix) option for
these same JEDEC part numbers. Both package options are available by
Microsemi in RoHS Compliant devices with an “e3” suffix. Microsemi also
offers numerous other Zener products to meet higher and lower power and
test current applications.
IMPORTANT:
For the most current data, consult
MICROSEMI’s
website:
http://www.microsemi.com
APPEARANCE
WWW .
Microsemi
.C
OM
DO-41 or
DO-204AL
(Plastic)
FEATURES
•
JEDEC registered 1N4728A to 1N4764A
•
Extensive voltage selection from 3.3 to 100 V
•
Options for screening in accordance with MIL-PRF-
19500 for JAN, JANTX, JANTXV, and JANS are
available by adding MQ, MX, MV, or MSP prefixes
respectively to part numbers.
•
Surface mount equivalents available as SMAJ4728A to
SMAJ4764A and MLL4728A to MLL4764A (consult
factory for others)
•
RoHS Compliant devices available by adding “e3” suffix
•
•
•
•
•
•
APPLICATIONS / BENEFITS
Regulates voltage over a broad operating current and
temperature range
Standard voltage tolerances are plus/minus 5% with
A suffix and 10 % with no suffix identification
Tight tolerances available in plus or minus 2% or 1%
with C or D suffix respectively
Flexible axial-lead mounting terminals
Nonsensitive to ESD per MIL-STD-750 Method 1020
Moisture classification is Level 1 per IPC/JEDEC J-
STD-020B with no dry pack required
MAXIMUM RATINGS
•
•
•
Power dissipation at 25
º
C: 1.0 watts (also see
derating in Figure 1).
Operating and Storage temperature: -65
º
C to
+150
º
C
º
Thermal Resistance: 45 C/W junction to lead at 3/8
(10 mm) lead length from body, or 105
º
C/W junction
to ambient when mounted on FR4 PC board (1 oz
Cu) with 4 mm
2
copper pads and track width 1 mm,
length 25 mm
o
Steady-State Power: 1.0 watts at T
L
< 105 C 3/8
º
inch (10 mm) from body or at T
A
< 45 C when
mounted on FR4 PC board as described for thermal
resistance above (also see Figure 1)
Forward voltage @200 mA: 1.2 volts (maximum)
Solder Temperatures: 260
º
C for 10 s (max)
•
•
MECHANICAL AND PACKAGING
CASE: Void-free transfer molded thermosetting
epoxy body meeting UL94V-0
TERMINALS: Tin-Lead (Sn/Pb) or RoHS Compliant
annealed matte-Tin plating solderable per MIL-STD-
750, method 2026
POLARITY: Cathode indicated by band. Diode to be
operated with the banded end positive with respect to
the opposite end for Zener regulation
MARKING: Part number
TAPE & REEL option: Standard per EIA-296 (add
“TR” suffix to part number)
WEIGHT: 0.7 grams
See package dimensions on last page
•
1N4728AP-1N4764AP,e3
•
•
•
•
•
•
•
Copyright
©
2005
10-18-2005 REV C
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 1
1N4728AP thru 1N4764AP,e3 (PLASTIC)
Silicon 1 Watt Zener Diodes
SCOTTSDALE DIVISION
WWW .
Microsemi
.C
OM
ELECTRICAL CHARACTERISTICS*
JEDEC
TYPE
NUMBER
(Note 1)
1N4728A
1N4729A
1N4730A
1N4731A
1N4732A
1N4733A
1N4734A
1N4735A
1N4736A
1N4737A
1N4738A
1N4739A
1N4740A
1N4741A
1N4742A
1N4743A
1N4744A
1N4745A
1N4746A
1N4747A
1N4748A
1N4749A
1N4750A
1N4751A
1N4752A
1N4753A
1N4754A
1N4755A
1N4756A
1N4757A
1N4758A
1N4759A
1N4760A
1N4761A
1N4762A
1N4763A
1N4764A
ZENER
VOLTAGE
TEST
CURRENT
(Vz)
(Note 4)
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
(I
ZT
)
mA
76
69
64
58
53
49
45
41
37
34
31
28
25
23
21
19
17
15.5
14
12.5
11.5
10.5
9.5
8.5
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.7
3.3
3.0
2.8
2.5
MAXIMUM
DYNAMIC
IMPEDANCE
MAXIMUM
REVERSE
CURRENT
TEST
VOLTAGE
(V
R
)
VOLTS
1
1
1
1
1
1
2
3
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
56.0
62.2
69.2
76.0
MAXIMUM
REGULATOR
CURRENT
TA = 50
o
C
mA
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
MAXIMUM
KNEE
IMPEDANCE
TEST
CURRENT
(I
ZK
)
mA
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
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
MAXIMUM
(SURGE)
CURRENT
(Z
ZT
@ I
ZT
)
(Note 2)
OHMS
10
10
9
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
50
60
70
80
95
110
125
150
175
200
250
350
(I
R
@ V
R
)
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
(I
ZM
)
(Z
ZK
@ I
ZK
)
(Note 2)
OHMS
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
(I
SM
)
(Note 3)
mA
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
90
80
70
65
60
55
50
45
*JEDEC Registered Data
NOTES:
1.
The JEDEC type numbers shown with an A suffix have a 5% tolerance on nominal zener voltage. No suffix signifies a 10% tolerance,
C signifies 2%, and D signifies 1% tolerance. Also add a P suffix for designating plastic construction, e.g. 1N4764AP (G suffix
designates glass body options described by separate data sheet).
The Zener impedance is derived from the 60 Hz ac voltage that results when an ac current having an rms value equal to 10% of the dc
Zener current (I
ZT
or I
ZK
) is superimposed on I
ZT
or I
ZK
. Zener impedance is measured at two points to ensure a sharp knee on the
breakdown curve and eliminate unstable units. See MicroNote 202 for zener impedance variation with different operating currents.
o
The reverse surge current is measured at 25 C ambient using a ½ square wave or equivalent sine wave pulse 1/120 second duration
superimposed on I
ZT
.
Zener voltage (V
Z
) is measured at T
L
= 25ºC (+8, -2ºC) and 90 seconds after application of dc current.
2.
1N4728AP-1N4764AP,e3
3.
4.
Copyright
©
2005
10-18-2005 REV C
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 2
1N4728AP thru 1N4764AP,e3 (PLASTIC)
Silicon 1 Watt Zener Diodes
SCOTTSDALE DIVISION
GRAPHS
WWW .
Microsemi
.C
OM
T
L
T
A
on FR4
PC board
T
L
, LEAD TEMP. ( C) 3/8” from body
or T
A
on FR4 PC Board
o
TEMPERATURE COEFFICIENT mV/oC
RATED POWER DISSIPATION - W
NOMINAL ZENER VOLTAGE (VOLTS)
FIGURE 1
Power Derating Curve
FIGURE 2
Temp. Coeff. vs. Zener Voltage
FIGURE 3
Capacitance vs. Voltage for Representative Types
PACKAGE DIMENSIONS (DO-41 or DO-204AL)
1N4728AP-1N4764AP,e3
Copyright
©
2005
10-18-2005 REV C
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 3
PCB Design
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