LESHAN RADIO COMPANY, LTD.
Zener Voltage Regulators
225 mW SOT–23 Surface Mount
This series of Zener diodes is offered in the convenient, surface
mount plastic SOT–23 package. These devices are designed to provide
voltage regulation with minimum space requirement. They are well
suited for applications such as cellular phones, hand held portables,
and high density PC boards.
LMBZ5221BLT1G
Series
S-LMBZ5221BLT1G
Series
3
1
2
•
•
•
•
225 mW Rating on FR–4 or FR–5 Board
Zener Voltage Range – 2.4 V to 91 V
Small Package Size for High Density Applications
ESD Rating of Class 3 (>16 KV) per Human Body Model
ƽ We declare that the material of product
compliance with RoHS requirements.
ƽ S- Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC-Q101
Qualified and PPAP Capable.
Mechanical Characteristics:
CASE: Void-free, transfer-molded, thermosetting plastic case
FINISH: Corrosion resistant finish, easily solderable
MAXIMUM CASE TEMPERATURE FOR SOLDERING PURPOSES:
260°C for 10 Seconds
SOT-23 (TO-236AB)
3
Cathode
1
Anode
MARKING DIAGRAM
xxx
M
Specification Features:
xxx = Specific Device Code
M = Date Code
POLARITY: Cathode indicated by polarity band
FLAMMABILITY RATING:
UL94 V–0MAXIMUM RATINGS
Rating
Symbol
Total Power Dissipation on FR–5 Board,
(Note 1) @ TA = 25°C
Derated above 25°C
PD
Thermal Resistance –
Junction–to–Ambient
RqJA
Total Power Dissipation on Alumina
Substrate, (Note 2) @ TA = 25°C
Derated above 25°C
Max
Unit
225
1.8
mW
mW/°C
556
°C/W
300
2.4
mW
mW/°C
PD
Thermal Resistance –
Junction‘to–Ambient
RqJA
417
°C/W
Junction and Storage
Temperature Range
TJ, Tstg
–65 to
+150
°C
1. FR–5 = 1.0 X 0.75 X 0.62 in.
2. Alumina = 0.4 X 0.3 X 0.024 in., 99.5% alumina
ORDERING INFORMATION
Device*1
Package
Shipping
LMBZ5221BLT1G Series
SOT-23
S-LMBZ5221BLT1G Series
3000/Tape&Reel
LMBZ5221BLT3G Series
SOT-23
S-LMBZ5221BLT3G Series
10,000/Tape&Reel
Rev.A 1/6
LESHAN RADIO COMPANY, LTD.
LMBZ5221BLT1G Series , S-LMBZ5221BLT1G Series
ELECTRICAL CHARACTERISTICS
I
(Pinout: 1-Anode, 2-No Connection, 3-Cathode) (TA = 25°C
unless otherwise noted, VF = 0.95 V Max. @ IF = 10 mA)
Symbol
IF
Parameter
VZ
Reverse Zener Voltage @ IZT
IZT
Reverse Current
ZZT
Maximum Zener Impedance @ IZT
IZK
Reverse Current
ZZK
Maximum Zener Impedance @ IZK
IR
Reverse Leakage Current @ VR
VR
Reverse Voltage
IF
Forward Current
VF
Forward Voltage @ IF
VZ VR
IR VF
IZT
V
Zener Voltage Regulator
Rev.A 2/6
LESHAN RADIO COMPANY, LTD.
LMBZ5221BLT1G Series , S-LMBZ5221BLT1G Series
ELECTRICAL CHARACTERISTICS (Pinout: 1-Anode, 2-NC, 3-Cathode) (VF = 0.9 V Max @ IF = 10 mA for all types.)
Zener Voltage (Note 3)
VZ (Volts)
Zener Impedance
@ IZT
ZZT @ IZT
Leakage Current
ZZK @ IZK
IR @ VR
Device
Device
Marking
Min
Nom
Max
mA
W
W
mA
mA
Volts
LMBZ5221BLT1G
LMBZ5222BLT1G
LMBZ5223BLT1G
LMBZ5224BLT1G
LMBZ5225BLT1G
18A
18B
18C
18D
18E
2.28
2.37
2.56
2.66
2.85
2.4
2.5
2.7
2.8
3
2.52
2.63
2.84
2.94
3.15
20
20
20
20
20
30
30
30
30
29
1200
1250
1300
1400
1600
0.25
0.25
0.25
0.25
0.25
100
100
75
75
50
1
1
1
1
1
LMBZ5226BLT1G
LMBZ5227BLT1G
LMBZ5228BLT1G
LMBZ5229BLT1G
LMBZ5230BLT1G
8A
8B
8C
8D
8E
3.13
3.42
3.70
4.08
4.46
3.3
3.6
3.9
4.3
4.7
3.47
3.78
4.10
4.52
4.94
20
20
20
20
20
28
24
23
22
19
1600
1700
1900
2000
1900
0.25
0.25
0.25
0.25
0.25
25
15
10
5
5
1
1
1
1
2
LMBZ5231BLT1G
LMBZ5232BLT1G
LMBZ5233BLT1*G
LMBZ5234BLT1G
LMBZ5235BLT1G
8F
8G
8H
8J
8K
4.84
5.32
5.70
5.89
6.46
5.1
5.6
6
6.2
6.8
5.36
5.88
6.30
6.51
7.14
20
20
20
20
20
17
11
7
7
5
1600
1600
1600
1000
750
0.25
0.25
0.25
0.25
0.25
5
5
5
5
3
2
3
3.5
4
5
LMBZ5236BLT1G
LMBZ5237BLT1G
LMBZ5238BLT1G
LMBZ5239BLT1G
LMBZ5240BLT1G
8L
8M
8N
8P
8Q
7.12
7.79
8.26
8.64
9.50
7.5
8.2
8.7
9.1
10
7.88
8.61
9.14
9.56
10.50
20
20
20
20
20
6
8
8
10
17
500
500
600
600
600
0.25
0.25
0.25
0.25
0.25
3
3
3
3
3
6
6.5
6.5
7
8
LMBZ5241BLT1G
LMBZ5242BLT1 G
LMBZ5243BLT1G
LMBZ5244BLT1G
LMBZ5245BLT1G
8R
8S
8T
8U
8V
10.4
11.40
12.35
13.30
14.25
11
12
13
14
15
11.55
12.60
13.65
14.70
15.75
20
20
9.5
9
8.5
22
30
13
15
16
600
600
600
600
600
0.25
0.25
0.25
0.25
0.25
2
1
0.5
0.1
0.1
8.4
9.1
9.9
10
11
LMBZ5246BLT1*G
LMBZ5247BLT1G
LMBZ5248BLT1G
LMBZ5249BLT1G
LMBZ5250BLT1 G
8W
8X
8Y
8Z
81A
15.20
16.15
17.10
18.05
19.00
16
17
18
19
20
16.80
17.85
18.90
19.95
21.00
7.8
7.4
7
6.6
6.2
17
19
21
23
25
600
600
600
600
600
0.25
0.25
0.25
0.25
0.25
0.1
0.1
0.1
0.1
0.1
12
13
14
14
15
LMBZ5251BLT1G
LMBZ5252BLT1G
LMBZ5253BLT1G
LMBZ5254BLT1 G
LMBZ5255BLT1G
81B
81C
81D
81E
81F
20.90
22.80
23.75
25.65
26.60
22
24
25
27
28
23.10
25.20
26.25
28.35
29.40
5.6
5.2
5
4.6
4.5
29
33
35
41
44
600
600
600
600
600
0.25
0.25
0.25
0.25
0.25
0.1
0.1
0.1
0.1
0.1
17
18
19
21
21
LMBZ5256BLT1G
LMBZ5257BLT1 G
LMBZ5258BLT1G
LMBZ5259BLT1G
LMBZ5260BLT1G
81G
81H
81J
81K
81L
28.50
31.35
34.20
37.05
40.85
30
33
36
39
43
31.50
34.65
37.80
40.95
45.15
4.2
3.8
3.4
3.2
3
49
58
70
80
93
600
700
700
800
900
0.25
0.25
0.25
0.25
0.25
0.1
0.1
0.1
0.1
0.1
23
25
27
30
33
LMBZ5261BLT1G
LMBZ5262BLT1G
LMBZ5263BLT1G
LMBZ5264BLT1G
LMBZ5265BLT1G
81M
81N
81P
81Q
81R
44.65
48.45
53.20
57.00
58.90
47
51
56
60
62
49.35
53.55
58.80
63.00
65.10
2.7
2.5
2.2
2.1
2
105
125
150
170
185
1000
1100
1300
1400
1400
0.25
0.25
0.25
0.25
0.25
0.1
0.1
0.1
0.1
0.1
36
39
43
46
47
LMBZ5266BLT1G
LMBZ5267BLT1G
LMBZ5268BLT1G *
LMBZ5269BLT1G *
LMBZ5270BLT1G *
81S
81T
81U
81V
81W
64.60
71.25
77.90
82.65
86.45
68
75
82
87
91
71.40
78.75
86.10
91.35
95.55
1.8
1.7
1.5
1.4
1.4
230
270
330
370
400
1600
1700
2000
2200
2300
0.25
0.25
0.25
0.25
0.25
0.1
0.1
0.1
0.1
0.1
52
56
62
68
69
3. Zener voltage is measured with a pulse test current IZ at an ambient temperature of 25°C
*Not production
Rev.A 3/6
LESHAN RADIO COMPANY, LTD.
LMBZ5221BLT1G Series , S-LMBZ5221BLT1G Series
TYPICAL CHARACTERISTICS
100
7
θ VZ, TEMPERATURE COEFFICIENT (mV/°C)
θ VZ, TEMPERATURE COEFFICIENT (mV/°C)
8
TYPICAL TC VALUES
FOR LMBZ5221BLT1 SERIES
6
5
4
VZ @ IZT
3
2
1
0
–1
–2
–3
2
3
4
5
6
7
8
9
10
11
VZ @ IZT
10
1
12
10
100
VZ, NOMINAL ZENER VOLTAGE (V)
VZ, NOMINAL ZENER VOLTAGE (V)
Figure 1. Temperature Coefficients
(Temperature Range –55°C to +150°C)
Figure 2. Temperature Coefficients
(Temperature Range –55°C to +150°C)
1000
1000
TJ = 255C
IZ(AC) = 0.1 IZ(DC)
f = 1 kHz
75 V (LMBZ5267BLT1)
91 V (LMBZ5270BLT1)
IF, FORWARD CURRENT (mA)
Z ZT, DYNAMIC IMPEDANCE (Ω )
TYPICAL TC VALUES
FOR LMBZ5221BLT1 SERIES
IZ = 1 mA
100
5 mA
20 mA
10
100
10
1505C
1
1
10
100
1
0.4
0.5
75°C 25°C
0.6
0.7
0°C
0.8
0.9
1.0
1.1
VZ, NOMINAL ZENER VOLTAGE
VF, FORWARD VOLTAGE (V)
Figure 3. Effect of Zener Voltage on
Zener Impedance
Figure 4. Typical Forward Voltage
1.2
Rev.A 4/6
LESHAN RADIO COMPANY, LTD.
LMBZ5221BLT1G Series , S-LMBZ5221BLT1G Series
TYPICAL CHARACTERISTICS
1000
1000
C, CAPACITANCE (pF)
I R , LEAKAGE CURRENT (µA)
TA = 25°C
0 V BIAS
1 V BIAS
100
BIAS AT
50% OF VZ NOM
10
100
10
1
+1505C
0.1
0.01
+255C
0.001
–555C
0.0001
0.00001
1
1
10
0
100
10
20
30
40
50
60
V Z, NOMINAL ZENER VOLTAGE (V)
Figure 5. Typical Capacitance
Figure 6. Typical Leakage Current
80
100
100
TA = 25°C
I Z , ZENER CURRENT (mA)
TA = 25°C
I Z , ZENER CURRENT (mA)
70
VZ, NOMINAL ZENER VOLTAGE (V)
10
1
0.1
10
1
0.1
0.01
0.01
0
2
4
6
8
10
12
10
30
50
70
90
VZ, ZENER VOLTAGE (V)
VZ, ZENER VOLTAGE (V)
Figure 7. Zener Voltage versus Zener Current
(VZ Up to 12 V)
Figure 8. Zener Voltage versus Zener Current
(12 V to 91 V)
Rev.A 5/6
90
LESHAN RADIO COMPANY, LTD.
LMBZ5221BLT1G Series , S-LMBZ5221BLT1G Series
SOT-23
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M,1982
2. CONTROLLING DIMENSION: INCH.
A
L
3
1
V
A1
2
DIM
B S
A
B
C
D
G
H
J
K
L
S
V
G
C
D
H
K
J
MIN
0.1102
0.0472
0.0350
0.0150
0.0701
0.0005
0.0034
0.0140
0.0350
0.0830
0.0177
INCHES
MAX
0.1197
0.0551
0.0440
0.0200
0.0807
0.0040
0.0070
0.0285
0.0401
0.1039
0.0236
MILLIMETERS
MIN
MAX
2.80
3.04
1.20
1.40
0.89
1.11
0.37
0.50
1.78
2.04
0.013
0.100
0.085
0.177
0.35
0.69
0.89
1.02
2.10
2.64
0.45
0.60
0.037
0.95
0.037
0.95
0.079
2.0
0.035
0.9
0.031
0.8
inches
mm
Rev.A 6/6
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