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SMA5921B thru SMA5945B
SURFACE MOUNT ZENER TYPE
SURFACE MOUNT ZENER DIODES 1.5 WATTS
SMA/DO-214AC
.050 (1.27) .064(1.63) .087(2.20) .115(2.92)
.157(4.00) .181(4.60)
.006(0.15) . .012(0.31)
.067(1.70) . .103(2.62) .030(0.76) .060(1.52) .004(.1 0 ) .009(.20 )
.176(4.48) .220(5.59)
Dimensions in inches and (millimeters)
FEATURES
* 1.5W Power Dissipation * For Surface Mounted Applications * Zener Breakdown Voltage Range 6.8V to 68V
MECHANICAL DATA
* Case: Molded plastic SMA/DO-214AC method 2026 * Epoxy: UL 94V-0 rate flame retardant * Terminals: Solderable per MIL-STD-750 * Polarity: cathode band * Mounting position: Any * Weight: 0.064 gram
MAXIMUM RATINGS (at TA=25 C unless otherwise noted)
o
Characteristics
Half sine-wave superimposed on rated load (JEDEC method)
1
Symbol
IFSM
Value
10 1.5 150 -55 to +150
Unit
A W C C
Power Dissipation2 Maximun junction Temperature Storage Temperature Range
PD Tj T STG
NOTES : (1) Measurd on 8.3ms, single half-sine wave or equivalent square wave, duty cycle = 4 pulses per minute maximum. (2) Mounted on 5.0mm2(.013mm thick) land areas.
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SMA5921B thru SMA5945B
SURFACE MOUNT ZENER TYPE
SURFACE MOUNT ZENER DIODES 1.5 WATTS
ELECTRICAL CHARACTERISTICS (at TA=25 C unless otherwise noted)
o
Electrical Characteristic (Ta=25C) Part No.
SMA5921B SMA5922B SMA5923B SMA5924B SMA5925B SMA5926B SMA5927B SMA5928B SMA5929B SMA5930B SMA5931B SMA5932B SMA5933B SMA5934B SMA5935B SMA5936B SMA5937B SMA5938B SMA5939B SMA5940B SMA5941B SMA5942B SMA5943B SMA5944B SMA5945B
Vz
(V)
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
( mA )
55.1 50.0 45.7 41.2 37.5 34.1 31.2 28.8 25.0 23.4 20.8 18.7 17.0 15.6 13.9 12.5 11.4 10.4 9.6 8.7 8.0 7.3 6.7 6.0 5.5
IzT
ZZT
()
2.5 3.0 3.5 4.0 4.5 5.5 6.5 7.0 9.0 10 12 14 17.5 19 23 26 33 38 45 53 67 70 86 100 120
ZZK
()
200 400 400 500 500 550 550 550 600 600 650 650 650 700 700 750 800 850 900 950 1000 1100 1300 1500 1700
( mA )
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
IZK
(A)
2.5 2.5 2.5 2.5 2.5 2.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
IR VR
(V)
5.2 6.0 6.5 7.0 8.0 8.4 9.1 9.9
Surge Current ( mA )
221 200 183 165 150 136 125 115 100 94 83 75 68 63 56 50 45 42 38 35 32 29 27 24 22
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
Suffix B for 5%
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SMA5921B thru SMA5945B
SURFACE MOUNT ZENER TYPE
Typical Characteristics
PD, MAXIMUM POWER DISSIPATION (WATTS)
SURFACE MOUNT ZENER DIODES 1.5 WATTS
VZ, TEMPERATURE COEFFICIENT (mV/C)
5 4 1.5 1.0 0.5 0
8 6 4 2 0 -2 -4 3
VZ@IZT
0
25
50
75
100
125
150
175
4
5
6
7
8
9
10
11
12
TL,LEADTEMPERATURE(C)
VZ,ZENERVOLTAGE(VOLTS)
FIG 1. STEADY STATE POWERDERATING
VZ, TEMPERATURE COEFFICIENT (mV/C)
FIG 2. ZENER VOLTAGE-TO 12 VOLTS
1000
TJ - 25C IZ(ms) = 0.1 IZ(dc) VZ = 150V
120 100 80 60 40 20 0
VZ@IZT
ZZ, DYNAMIC IMPEDANCE (OHMS)
100
91V 62V
10
22V 12V
0
20
40
60
80
100 120 140 160 180 200
1 0.5 1 1.0 100
6.8V
100
VZ, ZENERVOLTAGE(VOLTS)
IZ , ZENER TEST CURRENT (mA)
FIG 3. ZENER VOLTAGE-10 TO 12 VOLTS
1K
200 100 70 50 30 20 10mA 10 7 5 3
FIG 4. EFFECT OF ZENER CURRENT
PPK, PEAK SURGE POWER (watts)
RECTANGULAR NONREPETITIVE WAVEFORM TJ = 25oC PRIOR TO INITIAL PULSE
ZZ, DYNAMIC IMPEDANCE (ohms)
Iz(dc) =1mA
500 300 200 100 50 30 20 10 0.1 0.2 0.3 5
2
20mA 7 10 20 30
Iz(ms) = 0.1Iz(dc) 50 70 100
5
1
235
0
20
50
100
Fig 5. VZ = 6.8 THRU10VOLTS
100
IZ, ZENER CURRENT (mA) IZ, ZENER CURRENT (mA)
100 50 30 20 10 5 3 2 1 0.5 0.3 0.2 0.1 0
VZ, ZENER VOLTAGE (VOLTS)
Fig 6.VZ=12 THRU 82 VOLTS
PW, PULSE WIDTH (ms)
50 30 20 10 5 3 2 1 0.5 0.3 0.2 0.1 0 1 2 3 4 5 6 7 8 9 10
10
20
30
40
50
60
70
80
90
100
Fig.7 VZ, ZENER VOLTAGE (VOLTS)
Fig.8 VZ, ZENER VOLTAGE (VOLTS)
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