METALLURGICALLY BONDED GLASS
SURFACE MOUNT 500 mW ZENERS
WWW.Microsemi .COM
SCOTTSDALE DIVISION
1N5221UR-1 thru 1N5281BUR-1,e3
(or MLL5221-1 thru MLL5281B-1,e3)
1N5221UR thru 1N5281BUR
DESCRIPTION APPEARANCE
The 1N5221BUR-1 thru 1N5281BUR-1 series of 0.5 watt Zener Voltage
Regulators provides a surface mount equivalent to the popular JEDEC
registered 1N5221B to 1N5281B for 2.4 to 200 volts in a metallurgically
bonded configuration. They are available with standard 5%, 10%, or 20%
tolerances as well as tighter tolerances identified by different suffix letters on
the part number. Microsemi also offers numerous other Zener products to
meet higher and lower power applications.
DO-213AA
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
FEATURES APPLIC ATIONS / BENEFITS
• Surface mount equivalents to the JEDEC registered
1N5221 thru 1N5281B series
• Hermetically sealed surface mount package
• Internal metallurgical bond
• 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
• RoHS Compliant devices avai lable by adding “e3” suffix
• DO-7 or DO-35 glass body axial-leaded Zener
equivalents also availab le p er JEDEC registration (see
separate data sheet for part numbers 1N5221 thru
1N5281B series
• Regulates voltage over a broad operating
current and temperature range
• Selection from 2.4 to 200 V
• Standard voltage tolerances are plus/minus 5%
with B suffix identification and 10 % with A suffix
• Tight tolerances available in plus or minus 2%
or 1% with C or D suffix respectively
• Nonsensitive to ESD per MIL-STD-750 Method 1020
• Minimal capacitance (see Figure 3)
• Inherently radiation hard as described in Microsemi
MicroNote 050
MAXIMUM RAT ING S MECHANICAL AND PACKAGING
• Operating and Storage temperature: -65ºC to +175ºC
• Thermal Resistance: 100ºC/W junction to end cap
and 250ºC/W junction to ambient when mounted on
FR4 PC board (1 oz Cu) with recommended footpri nt
(see last page)
• Steady-State Power: 0.5 watts at end cap
temperature TEC < 125oC or ambient temperature TA
< 50ºC when mounted on FR4 PC board as described
for thermal resistance above (see Figure 2 for
derating)
• Forward voltage @200 mA: 1.1 volts (maximum)
• Solder Temperatures: 260 ºC for 10 seconds (max)
• CASE: Hermetically sealed glass DO-213AA
(SOD80 or MLL34) MELF style package
• FINISH: End caps Tin-Lead or RoHS Compliant
annealed matte-Tin plating solderable per MIL-STD-
750, method 2026
• POLARITY: Cathode indicated by band where
diode is to be operated with the banded end positive
with respect to the opposite end for Zener regulation
• MARKING: cathode band only
• TAPE & REEL option: Standard per EIA-481-B with
12 mm tape, 2000 per 7 inch reel or 5000 per 13
inch reel (add “TR” suffix to part number)
• WEIGHT: 0.04 grams
• See package dimensions on l ast page
Microsemi
Scottsdale Division Page 1
Copyright © 2005
8-29-2005 REV A 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
METALLURGICALLY BONDED GLASS
SURFACE MOUNT 500 mW ZENERS
WWW.Microsemi .COM
SCOTTSDALE DIVISION
1N5221UR-1 thru 1N5281BUR-1,e3
(or MLL5221-1 thru MLL5281B-1,e3)
1N5221UR thru 1N5281BUR
ELECTRICAL CHARACTERISTICS* Max Reverse Leakage Current Nominal
Zener
Voltage
VZ @ IZT
(Note 2)
Test
Current
IZT
Max Zener Impedance
A and B suffix only A and B Suffix only Non-Suffix
Max Zener Voltage
Temperature Coeff.
(A and B Suffix only)
(Note 3)
@ VR
Volts
INDUSTRY
PART
NUMBER
(NOTES 1 & 4)
Volts mA
ZZT @ IZT
Ohms ZZK @ IZK =
0.25Ma Ohms
IR
μA A B
IR @ VR Used
for Suffix A
μA αVZ (%/oC)
1N5221UR-1
1N5222UR-1
1N5223UR-1
1N5224UR-1
1N5225UR-1
2.4
2.5
2.7
2.8
3.0
20
20
20
20
20
30
30
30
30
29
1200
1250
1300
1400
1600
100
100
75
75
50
0.95
0.95
0.95
0.95
0.95
1.0
1.0
1.0
1.0
1.0
200
200
150
150
100
-0.085
-0.085
-0.080
-0.080
-0.075
1N5226UR-1
1N5227UR-1
1N5228UR-1
1N5229UR-1
1N5230UR-1
3.3
3.6
3.9
4.3
4.7
20
20
20
20
20
28
24
23
22
19
1600
1700
1900
2000
1900
25
15
10
5.0
5.0
0.95
0.95
0.95
0.95
1.9
1.0
1.0
1.0
1.0
2.0
100
100
75
50
50
-0.070
-0.065
-0.060
+/-0.055
+/-0.030
1N5231UR-1
1N5232UR-1
1N5233UR-1
1N5234UR-1
1N5235UR-1
5.1
5.6
6.0
6.2
6.8
20
20
20
20
20
17
11
7.0
7.0
5.0
1600
1600
1600
1000
750
5.0
5.0
5.0
5.0
3.0
1.9
2.9
3.3
3.8
4.8
2.0
3.0
3.5
4.0
5.0
50
50
50
50
30
+/-0.030
+0.038
+0.038
+0.045
+0.050
1N5236UR-1
1N5237UR-1
1N5238UR-1
1N5239UR-1
1N5240UR-1
7.5
8.2
8.7
9.1
10
20
20
20
20
20
6.0
8.0
8.0
10
17
500
500
600
600
600
3.0
3.0
3.0
3.0
3.0
5.7
6.2
6.2
6.7
7.6
6.0
6.5
6.5
7.0
8.0
30
30
30
30
30
+0.058
+0.062
+0.065
+0.068
+0.075
1N5241UR-1
1N5242UR-1
1N5243UR-1
1N5244UR-1
1N5245UR-1
11
12
13
14
15
20
20
9.5
9.0
8.5
22
30
13
15
16
600
600
600
600
600
2.0
1.0
0.5
0.1
0.1
8.0
8.7
9.4
9.5
10.5
8.4
9.1
9.9
10
11
30
10
10
10
10
+0.076
+0.077
+0.079
+0.082
+0.082
1N5246UR-1
1N5247UR-1
1N5248UR-1
1N5249UR-1
1N5250UR-1
16
17
18
19
20
7.8
7.4
7.0
6.6
6.2
17
19
21
23
25
600
600
600
600
600
0.1
0.1
0.1
0.1
0.1
11.4
12.4
13.3
13.3
14.3
12
13
14
14
15
10
10
10
10
10
+0.083
+0.084
+0.085
+0.086
+0.086
1N5251UR-1
1N5252UR-1
1N5253UR-1
1N5254UR-1
1N5255UR-1
22
24
25
27
28
5.6
5.2
5.0
4.6
4.5
29
33
35
41
44
600
600
600
600
600
0.1
0.1
0.1
0.1
0.1
16.2
17.1
18.1
20
20
17
18
19
21
21
10
10
10
10
10
+0.087
+0.088
+0.089
+0.090
+0.091
1N5256UR-1
1N5257UR-1
1N5258UR-1
1N5259UR-1
1N5260UR-1
30
33
36
39
43
4.2
3.8
3.4
3.2
3.0
49
58
70
80
93
600
700
700
800
900
0.1
0.1
0.1
0.1
0.1
22
24
26
29
31
23
25
27
30
33
10
10
10
10
10
+0.091
+0.092
+0.093
+0.094
+0.095
1N5261UR-1
1N5262UR-1
1N5263UR-1
1N5264UR-1
1N5265UR-1
47
51
56
60
62
2.7
2.5
2.2
2.1
2.0
105
125
150
170
185
1000
1100
1300
1400
1400
0.1
0.1
0.1
0.1
0.1
34
37
41
44
45
36
39
43
46
47
10
10
10
10
10
+0.095
+0.096
+0.096
+0.097
+0.097
1N5266UR-1
1N5267UR-1
1N5268UR-1
1N5269UR-1
1N5270UR-1
68
75
82
87
91
1.8
1.7
1.5
1.4
1.4
230
270
330
370
400
1600
1700
2000
2200
2300
0.1
0.1
0.1
0.1
0.1
49
53
59
65
66
52
56
62
68
69
10
10
10
10
10
+0.097
+0.098
+0.098
+0.099
+0.099
1N5271UR-1
1N5272UR-1
1N5273UR-1
1N5274UR-1
1N5275UR-1
100
110
120
130
140
1.3
1.1
1.0
.95
.90
500
750
900
1100
1300
2600
3000
4000
4500
4500
0.1
0.1
0.1
0.1
0.1
72
80
86
94
101
76
84
91
99
106
10
10
10
10
10
+0.0110
+0.0110
+0.0110
+0.0110
+0.0110
1N5276UR-1
1N5277UR-1
1N5278UR-1
1N5279UR-1
1N5280UR-1
150
160
170
180
190
.85
.80
.74
.68
.66
1500
1700
1900
2200
2400
5000
5500
5500
6000
6500
0.1
0.1
0.1
0.1
0.1
108
116
123
130
137
114
122
129
137
144
10
10
10
10
10
+0.0110
+0.0110
+0.0110
+0.0110
+0.0110
1N5281UR-1 200 .65 2500 7000 0.1 144 152 10 +0.0110
Microsemi
Scottsdale Division Page 2
* TA = 25oC unless otherwise noted. Based on dc measurements at thermal equilibrium; case temperature maintained at 30 +/- 2oC. VF = 1.1V max @ IF = 200 mA
for all types. See further Notes on following page.
Copyright © 2005
8-29-2005 REV A 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
METALLURGICALLY BONDED GLASS
SURFACE MOUNT 500 mW ZENERS
WWW.Microsemi .COM
SCOTTSDALE DIVISION
1N5221UR-1 thru 1N5281BUR-1,e3
(or MLL5221-1 thru MLL5281B-1,e3)
1N5221UR thru 1N5281BUR
NOTE 1: Table as shown lists type numbers, which indicate a tolerance of +/-20% with guaranteed limits on only VZ, IR, and VF. Devices with
guaranteed limits on all six parameters are indicated by suffix “A” for +/-10%, “B” for +/-5%, “C” for +/-2%, and “D” for +/-1% tolerance.
NOTE 2: The electrical characteristics are measured after allowing the device to stabilize for 20 seconds.
NOTE 3: Temperature coefficient (αvz). Test conditions for temperature coefficient are as follows:
a. IZT = 7.5 mA, T1 = 25oC,
T2 = 125oC (1N5221AUR-1 & BUR-1 thru 1N5242AUR-1 & BUR-1)
b. IZT = Rated IZT, T1 = 25oC,
T2 = 125oC (1N5243AUR-1 & BUR-1 thru 1N5281AUR-1 & BUR-1)
Device to be temperature stabilized with current applied prior to reading breakdown voltage at the specified ambient temperature.
NOTE 4: These devices may be ordered as either 1N5221UR-1 thru 1N5281BUR-1 or as MLL5221-1 thru MLL5281B-1 part numbers.
GRAPHS
Microsemi
Scottsdale Division Page 3
Copyright © 2005
8-29-2005 REV A
TEMPERATURE COEFFICIENT mV/oC
TEMPERATURE COEFFICIENT %/oC
Voltage Temperature
Coefficient %/oC
mW
TEC
T
A
-
RATED POWER
mV Change /ºC
TEC End Cap Temperature (ºC), or NOMINAL ZENER VOLTAGE (VOLTS)
TA Ambient Temperature on FR4 PC BOARD FIGURE 2
FIGURE 1 ZENER VOLTAGE TEMPERATURE
POWER DERATING CURVE COEFFICIENT vs. ZENER VOLTAGE
PACKAGE DIMEN SIONS
INCHES MILLIMETERS
DIM MIN MAX MIN MAX
A 0.063 0.067 1.60 1.70
B 0.130 0.146 3.30 3.70
C 0.016 0.022 0.41 0.55
INCHES mm
A .200 5.08
B .055 1.40
C .080 2.03
PAD LAYOUT
FIGURE 3
CAPACITANCE vs. ZENER VOLTAGE
(TYPICAL)
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
