1N5221 thru 1N5281B, e3 DO-35
500 mW GLASS AXIAL-LEAD
ZENER DIODES
SCOTTSDALE DIVISION
DESCRIPTION
The popular 1N5221 thru 1N5281B series of 0.5 watt Zener Voltage Regulators
provides a selection from 2.4 to 200 volts in standard 5% or 10% tolerances as
well as tighter tolerances identified by different suffix letters on the part number.
These glass axial-leaded DO-35 Zeners are also available in various military
screening levels by adding a prefix identifier as described in the Features
section. Microsemi also offers numerous other Zener products to meet higher
and lower power applications.
IMPORTANT:
For the most current data, consult
MICROSEMI’s
website:
http://www.microsemi.com
APPEARANCE
WWW .
Microsemi
.C
OM
DO-35
(DO-204AH
)
FEATURES
•
•
•
JEDEC registered 1N5221 to 1N5281B
Internal bonds optionally available with “-1” suffix
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 with “-1” suffix.
Surface mount equivalents available as MLL5221 to
MLL5281B in the DO-213AA MELF style package
including “-1” suffix options (consult factory for others)
RoHS Compliant devices available by adding “e3” suffix
DO-7 glass body axial-leaded Zener equivalents are also
available
•
•
•
•
•
•
•
•
APPLICATIONS / BENEFITS
Regulates voltage over a broad operating current
and temperature range
Extensive selection from 2.4 to 200 V
Standard voltage tolerances are plus/minus 5%
with B suffix, 10 % with A 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 (MIL-STD-750 Method 1020)
Minimal capacitance (see Figure 2)
Inherently radiation hard per MicroNote 050
•
•
•
MAXIMUM RATINGS
•
•
•
Power dissipation at 25
º
C: 0.5 watts (also see derating
in Figure 1).
Operating and Storage temperature: -65
º
C to +175
º
C
Thermal Resistance: 250
º
C/W junction to lead at 3/8
(10 mm) lead length from body, or 310
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
Steady-State Power: 0.5 watts at T
L
< 50
o
C 3/8 inch
(10 mm) from body or 0.48 W at T
A
< 25
º
C when
mounted on FR4 PC board as described for thermal
resistance above (also see Figure1)
Forward voltage @200 mA: 1.1 volts (maximum)
Solder Temperatures: 260
º
C for 10 s (max)
Max Zener Impedance
A & B Suffix Only
Note 2
Z
ZT
@ I
ZK
Ohms
30
30
30
30
29
28
24
23
22
19
Z
ZK
@ I
ZK
= 0.25
mA
Ohms
1200
1250
1300
1400
1600
1600
1700
1900
2000
1900
MECHANICAL AND PACKAGING
CASE: Hermetically sealed axial-lead glass DO-
35 (DO-204AH) package
•
FINISH: Tin-Lead 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: 0.2 grams
See package dimensions on last page
•
•
•
•
1N5221−1N5281B,e3 DO-35
ELECTRICAL CHARACTERISTICS @ 25°C
Max Reverse Current
A, B, C & D Suffix Only
I
R
μA
@
A
100
100
75
75
50
25
15
10
5.0
50
0.95
0.95
0.95
0.95
0.95
0.95
0.95
0.95
0.95
1.9
V
R
Volts
B,C & D
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
2.0
Non-Suffix
I
R
@ V
R
Used
For Suffix A
μA
200
200
150
150
100
100
100
75
50
50
JEDEC
Type No.
Note 1
Nominal
Zener
Voltage
V
Z
@ I
ZT
Volts
2.4
2.5
2.7
2.8
3.0
3.3
3.6
3.9
4.3
4.7
Test
Current
I
ZT
mA
20
20
20
20
20
20
20
20
20
20
Max Zener
Voltage Temp.
Coeff.
(A & B Suffix
Only)
α
VZ
(% /
o
C)
Note 3
-0.085
-0.085
-0.080
-0.080
-0.075
-0.070
-0.065
-0.060
+/-0.055
+/-0.030
1N5221
1N5222
1N5223
1N5224
1N5225
1N5226
1N5227
1N5228
1N5229
1N5230
Copyright
©
2005
8-29-2005 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
1N5221 thru 1N5281B, e3 DO-35
500 mW GLASS AXIAL-LEAD
ZENER DIODES
SCOTTSDALE DIVISION
JEDEC
Type No.
Note 1
Nominal
Zener
Voltage
V
Z
@ I
ZT
Volts
5.1
5.6
6.0
6.2
6.8
7.5
8.2
8.7
9.1
10
11
12
13
14
15
16
17
18
19
20
22
24
25
27
28
30
33
36
39
43
47
51
56
60
62
68
75
82
87
91
100
110
120
130
140
150
160
170
180
190
200
Test
Current
I
ZT
mA
20
20
20
20
20
20
20
20
20
20
20
20
9.5
9.0
8.5
7.8
7.4
7.0
6.6
6.2
5.6
5.2
5.0
4.6
4.5
4.2
3.8
3.4
3.2
3.0
2.7
2.5
2.2
2.1
2.0
1.8
1.7
1.5
1.4
1.4
1.3
1.1
1.0
0.95
0.90
0.85
0.80
0.74
0.68
0.66
0.65
Max Zener Impedance
A & B Suffix Only
Note 2
Z
ZT
@ I
ZK
Ohms
17
11
7.0
7.0
5.0
6.0
8.0
8.0
10
17
22
30
13
15
16
17
19
21
23
25
29
33
35
41
44
49
58
70
80
93
105
125
150
170
185
230
270
330
370
400
500
750
900
1100
1300
1500
1700
1900
2200
2400
2500
Z
ZK
@ I
ZK
= 0.25
mA
Ohms
1600
1600
1600
1000
750
500
500
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
700
700
800
900
1000
1100
1300
1400
1400
1600
1700
2000
2200
2300
2600
3000
4000
4500
4500
5000
5500
5500
6000
6500
7000
Max Reverse Current
A, B, C & D Suffix Only
I
R
μA
@
A
5.0
5.0
5.0
5.0
3.0
3.0
3.0
3.0
3.0
3.0
2.0
1.0
0.5
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
1.9
2.9
3.3
3.8
4.8
5.7
6.2
6.2
6.7
7.6
8.0
8.7
9.4
9.5
10.5
11.4
12.4
13.3
13.3
14.3
16.2
17.1
18.1
20
20
22
24
26
29
31
34
37
41
44
45
49
53
59
65
66
72
80
86
94
101
108
116
123
130
137
144
V
R
Volts
B,C & D
2.0
3.0
3.5
4.0
5.0
6.0
6.5
6.5
7.0
8.0
8.4
9.1
9.9
10
11
12
13
14
14
15
17
18
19
21
21
23
25
27
30
33
36
39
43
46
47
52
56
62
68
69
76
84
91
99
106
114
122
129
137
144
152
Non-Suffix
I
R
@ V
R
Used
For Suffix A
μA
50
50
50
50
30
30
30
30
30
30
30
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
1N5231
1N5232
1N5233
1N5234
1N5235
1N5236
1N5237
1N5238
1N5239
1N5240
1N5241
1N5242
1N5243
1N5244
1N5245
1N5246
1N5247
1N5248
1N5249
1N5250
1N5251
1N5252
1N5253
1N5254
1N5255
1N5256
1N5257
1N5258
1N5259
1N5260
1N5261
1N5262
1N5263
1N5264
1N5265
1N5266
1N5267
1N5268
1N5269
1N5270
1N5271
1N5272
1N5273
1N5274
1N5275
1N5276
1N5277
1N5278
1N5279
1N5280
1N5281
Max Zener
Voltage Temp.
Coeff.
(A & B Suffix
Only)
α
VZ
(% /
o
C)
Note 3
+/-0.030
+0.038
+0.038
+0.045
+0.050
+0.058
+0.062
+0.065
+0.068
+0.075
+0.076
+0.077
+0.079
+0.082
+0.082
+0.083
+0.084
+0.085
+0.086
+0.086
+0.087
+0.088
+0.089
+0.090
+0.091
+0.091
+0.092
+0.093
+0.094
+0.095
+0.095
+0.096
+0.096
+0.097
+0.097
+0.097
+0.098
+0.098
+0.099
+0.099
+0.110
+0.110
+0.110
+0.110
+0.110
+0.110
+0.110
+0.110
+0.110
+0.110
+0.110
WWW .
Microsemi
.C
OM
1N5221−1N5281B,e3 DO-35
*JEDEC registered data. JEDEC type numbers listed indicate a tolerance of +/-20% with guaranteed limits on only V
Z
, I
R
, and V
F
. Devices with
guaranteed limits on all six parameters are indicated by suffix A for +/-10% tolerance and suffix B for +/-5% tolerance. Also available with suffix C
or D which indicates 2% and 1% tolerance respectively.
NOTES:
1. The electrical characteristics are measured after allowing the device to stabilize for 20 seconds when mounted with a 3/8” (10 mm) minimum
lead length from the case.
2.
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,
thereby eliminating unstable units. Also see MicroNote 202 for variation in dynamic impedance with different operating currents.
3. Temperature coefficient (α
VZ
). Test conditions for temperature coefficient are as follows:
o
o
a. I
ZT
= 7.5 mA, T
1
= 25 C, T
2
= 125 C (1N5221A, B thru 1N5242A, B).
o
o
b. I
ZT
= Rated I
ZT
, T
1
= 25 C, T
2
= 125 C (1N5243A, B thru 1N5281A, B).
(Device to be temperature stabilized with current applied prior to reading breakdown voltage at the specified ambient temp.)
Copyright
©
2005
8-29-2005 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
1N5221 thru 1N5281B, e3 DO-35
500 mW GLASS AXIAL-LEAD
ZENER DIODES
SCOTTSDALE DIVISION
GRAPHS
WWW .
Microsemi
.C
OM
Pd, Rated Power Dissipation (mW)
T
L
Lead Temperature at 3/8” From Body
or T
A
on FR4 PC Board
FIGURE 1
POWER DERATING CURVE
FIGURE 2
CAPACITANCE vs. ZENER VOLTAGE
(TYPICAL)
PACKAGE DIMENSIONS
1N5221−1N5281B,e3 DO-35
All dimensions in INCH
mm
Copyright
©
2005
8-29-2005 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
