T4-LDS-0232-1, Rev. 1 (111957) ©2011 Microsemi Corporation Page 1 of 6
1N5221BUR-1 thru 1N5281BUR-1
Available on
commercial
versions
METALLURGICALL Y BONDED GLASS
SURFACE MOUNT 500 mW Z ENERS
Screening in
reference to
MIL-PRF-19500
available
DESCRIPTION
The 1N5221BUR-1 thru 1N5281BUR-1 ser ies of 0.5 wat t Zener voltage regulators provides a
surfac e mount equivalent to t he popu l ar JEDEC registered 1 N5221 to 1N5281 series for 2.4 t o
200 volts i n a met al lur gically bonded c onfigu r ation. Th ey are availabl e wit h standard 5% or
10% toler ances as w el l as tig hter t ol er anc es identified by dif ferent suffix let ters on the part
number. Mic r osemi als o off er s n umerous other Zener prod uc ts to meet high er and lower
power applications.
DO-213AA Package
Also available in:
DO-35 (DO-204AH)
(axial-leaded)
1N5221B-1 thru 1N5281B-1
Important: For the latest information, vi sit our website http://www.microsemi.com.
FEATURES
Sur face mount equiv alent of JEDEC registered 1N5221 thru 1N5281 series.
Voltage tolerances of 10%, 5%, 2%, and 1% available.
Hermetical ly sealed surface mount pack age.
I nter nal meta llurgi cal bond.
Up-screening in reference to MIL-PRF-19500 is available. (See part nomenclature for all available
options.)
RoHS compliant versions available (commercial grade only).
APPLIC ATIONS / BENEFITS
Regulates voltage over a broad operating current and temperature range.
Extensive selection from 2.4 to 200 V.
Non-sensitive to ESD (MIL-STD-750 method 1020).
Minimal capacitance (see Figure 3).
Inherently radiation hard per MicrosemiMicroNote 050”.
MAXIMUM RATINGS
MSCLawrence
6 Lake Street,
Lawrence, MA 01841
Tel: 1-800-446-1158 or
(978) 620-2600
Fax: (978) 689-0803
MSCIreland
Gort Road Business Park,
Ennis, Co. Clare, Ireland
Tel: + 353 (0) 65 6840044
Fax: +353 (0) 65 6822298
Website:
www.microsemi.com
Parameters/Test Conditions
Symbol
Value
Unit
Junction and Storage Temperature
TJ and TSTG
-65 to +175
oC
Thermal Resistance Junction-to-Ambient (1)
RӨJA
250
oC/W
Thermal Resistance Junction-to-End Cap
RӨJEC
100
oC/W
Steady-State Power Dissipation (2)
PD
0.5
W
Forward Voltage @ 200 mA
VF
1.1
V
Solder Temperature @ 10 s
TSP
260
oC
Notes: 1. When mounted on FR4 PC board (1 oz Cu) with recommended footprint (see last page).
2. At end cap temperature TEC < 125 oC or ambient temperature TA < 50 ºC when moun ted on FR4 PC
board as described for thermal resistance above (see Fi g ure 2 for derating).
T4-LDS-0232-1, Rev. 1 (111957) ©2011 Microsemi Corporation Page 2 of 6
1N5221BUR-1 thru 1N5281BUR-1
CASE: Hermeti cally sealed glass DO-213AA (SOD80 or MLL34) M ELF style package.
TERMINALS: End c aps tin-lead or RoHS co mpliant a nnealed matte-tin plating (commer cia l gr ade only) solderable per MIL-STD-
750, method 2026.
MARKING: Cathode band only.
POLARITY: Cathode indicated by band where diode is to be operated with the banded end posi tive with respect to the opposite
end for Zener regulation.
TAPE & REEL option: Standard per EIA-481-B (add “TR” suffi x to part number). Consult factory for quantities.
WEIGHT: 0.04 grams.
See Package Dimensions on last page.
MQ 1N5221 B UR -1 (e3)
Reliability Level
MQ (reference JAN)
MX (reference JANTX)
MV (reference JANTXV)
MSP (r eference JANS)
Blank = Commercial
JEDEC type number
(see Electrical Characteristics
table)
Zener Vol tage Tol era nce
A = 10%
B = 5%
C = 2%
D = 1%
RoHS Compli ance
e3 = RoHS Compliant (available
on commercial grade only)
Blank = non-RoHS Compliant
Metallurgically Bonded
Surface Mount Package
SYMBOLS & DEF INITIONS
Symbol
Definition
IR
Reve rse Current: The m aximum reverse (leakage) current that w ill flow at the s pecifi ed voltage and temperature.
IZ, IZT, IZK
Regulator Current: The dc regulator current (IZ), at a specified test point (IZT), near breakdown knee (IZK).
IZM
Maximum Regulator (Zener) Current: The maximum rated dc current for the specified power rating.
TSP
Temperature Solder Pad: The m aximum solder temperature that can be safely applied to the terminal.
VR
Reve rse Voltage: The reverse voltage dc value, no alternating component.
VZ
Zener Voltage: The Zener voltage the device will exhibit at a specified current (IZ) in its breakdown region.
ZZT or ZZK
Dynamic Impedance: The small si gnal impedance of the diode when biased to operate in its breakdown region at a
specified rms current modulation (typically 10% of IZT o r IZK) and superimposed on IZT or IZK respectively.
T4-LDS-0232-1, Rev. 1 (111957) ©2011 Microsemi Corporation Page 3 of 6
1N5221BUR-1 thru 1N5281BUR-1
INDUSTRY
PART
NUMBER
(Notes 1 & 4)
Nominal
Zener
Voltage
VZ @ I ZT
(Note 2)
Volts
Test
Current
IZT
mA
Max Zene r I m pe dan c e
Max Reverse Leakage
Current
Max Zene r
Voltage
Temp. Coeff.
(Note 3)
α
VZ (% /
o
C)
ZZT @ IZT
Ohms
ZZK @ IZK = 0.25 mA
Ohms
I
R
@ V
R
µA
Volts
A
B,C & D
1N5221BUR-1
1N5222BUR-1
1N5223BUR-1
1N5224BUR-1
1N5225BUR-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
-0.085
-0.085
-0.080
-0.080
-0.075
1N5226BUR-1
1N5227BUR-1
1N5228BUR-1
1N5229BUR-1
1N5230BUR-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
50
0.95
0.95
0.95
0.95
1.9
1.0
1.0
1.0
1.0
2.0
-0.070
-0.065
-0.060
+/-0.055
+/-0.030
1N5231BUR-1
1N5232BUR-1
1N5233BUR-1
1N5234BUR-1
1N5235BUR-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
+/-0.030
+0.038
+0.038
+0.045
+0.050
1N5236BUR-1
1N5237BUR-1
1N5238BUR-1
1N5239BUR-1
1N5240BUR-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
+0.058
+0.062
+0.065
+0.068
+0.075
1N5241BUR-1
1N5242BUR-1
1N5243BUR-1
1N5244BUR-1
1N5245BUR-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
+0.076
+0.077
+0.079
+0.082
+0.082
1N5246BUR-1
1N5247BUR-1
1N5248BUR-1
1N5249BUR-1
1N5250BUR-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
+0.083
+0.084
+0.085
+0.086
+0.086
1N5251BUR-1
1N5252BUR-1
1N5253BUR-1
1N5254BUR-1
1N5255BUR-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
+0.087
+0.088
+0.089
+0.090
+0.091
1N5256BUR-1
1N5257BUR-1
1N5258BUR-1
1N5259BUR-1
1N5260BUR-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
+0.091
+0.092
+0.093
+0.094
+0.095
1N5261BUR-1
1N5262BUR-1
1N5263BUR-1
1N5264BUR-1
1N5265BUR-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
+0.095
+0.096
+0.096
+0.097
+0.097
1N5266BUR-1
1N5267BUR-1
1N5268BUR-1
1N5269BUR-1
1N5270BUR-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
+0.097
+0.098
+0.098
+0.099
+0.099
1N5271BUR-1
1N5272BUR-1
1N5273BUR-1
1N5274BUR-1
1N5275BUR-1
100
110
120
130
140
1.3
1.1
1.0
0.95
0.90
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
+0.110
+0.110
+0.110
+0.110
+0.110
1N5276BUR-1
1N5277BUR-1
1N5278BUR-1
1N5279BUR-1
1N5280BUR-1
1N5281BUR-1
150
160
170
180
190
200
0.85
0.80
0.74
0.68
0.66
0.65
1500
1700
1900
2200
2400
2500
5000
5500
5500
6000
6500
7000
0.1
0.1
0.1
0.1
0.1
0.1
108
116
123
130
137
144
114
122
129
137
144
152
+0.110
+0.110
+0.110
+0.110
+0.110
+0.110
* TA = +25 oC unless otherwise noted. Based on dc measurements at thermal equil ibrium; case temperature maintained at 30 +/- 2 oC.
VF = 1.1 V max @ IF = 200 mA for all types. See further notes on following page.
T4-LDS-0232-1, Rev. 1 (111957) ©2011 Microsemi Corporation Page 4 of 6
1N5221BUR-1 thru 1N5281BUR-1
NOTE 1: Table as shown lists type numbers, which indicate a tol erance of +/- 5%. 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% toleranc e.
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 = 20 mA, T1 = 25 oC,
T2 = 125 oC (1N5221AUR-1 & BUR-1 thru 1N5242AUR-1 & BUR-1)
b. IZT = Rated IZT , T1 = 25 oC,
T2 = 125 oC (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 temperatu re.
T4-LDS-0232-1, Rev. 1 (111957) ©2011 Microsemi Corporation Page 5 of 6
1N5221BUR-1 thru 1N5281BUR-1
TEC End Cap Temp er ature (ºC ) , or Nominal Zener Voltage (Volts)
TA Ambient Temper ature on FR4 PC B oard
FIGURE 2
FIGURE 1 ZENER VOLT AG E TEMPERATURE
POW ER DE RATI NG CURVE COEFFICIENT vs. ZENER VOLTAGE
Zener Voltage VZ
FIGURE 3
CAPACITANCE vs. ZENER VOLTAGE (TYPICAL)
TEC
TA
Typical Capacitance In Picofarads (pF)
Pd, Rated Power
Dissipation (mW)
Temperature Coefifcient %/oC
Temperature Coefficient mV/oC
T4-LDS-0232-1, Rev. 1 (111957) ©2011 Microsemi Corporation Page 6 of 6
1N5221BUR-1 thru 1N5281BUR-1
DIM
INCHES
MILLIMETERS
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