1
MOTOROLA
1SMA10CAT3 through 1SMA78CAT3
Zener Transient Voltage
Suppressors
Specification Features:
Reverse StandOff Voltage Range: 10 78 V
Bidirectional Operation
Peak Power -- 400 Watts @ 1.0 ms
ESD Rating of Class 3 (>16 kV) per Human Body Model
Pico Seconds Response Time (0 V to BV)
Flat Handling Surface for Accurate Placement
Package Design for Top Side or Bottom Circuit Board Mounting
Available in Tape and Reel
Low Profile Package
Mechanical Characteristics:
Case: Voidfree, transfer-molded plastic
Maximum Case Temperature for Soldering Purposes: 260
C for
10 seconds
Finish: All external surfaces are corrosion resistant with readily solderable
leads
Polarity: None
Mounted Position: Any
MAXIMUM RATINGS AND CHARACTERISTICS
Rating
Symbol
Value
Unit
Peak Power Dissipation @ TL = 25
C, PW = 10/1000
s (Note 1)
Ppk
400
Watts
Thermal Resistance from Junction to Lead
R
JL
29
C/W
Thermal Resistance from Junction to Ambient
R
JA
150
C/W
Operating and Storage Junction Temperature Range
TJ, Tstg
150
C
* FR4 Board, using Motorola minimum recommended footprint, as shown in case 403B outline dimensions spec.
1. Nonrepetitive current pulse.
ELECTRICAL CHARACTERISTICS
D
i
Reverse
Breakdown Voltage
Maximum
Reverse Voltage
Maximum
Reverse
Maximum
D
Device
Standoff
Voltage VRWM
(Volts)
VBR
Volts
(Min)
IT
mA
Reverse Voltage
@ IRSM
(Clamping Voltage)
VRSM (Volts)
Reverse
Surge Current
IRSM
(Amps)
Reverse Leakage
@ VRWM
IR (
A)
Devce
Marking
1SMA10CAT3
10
11.1
1
17.0
23.5
2.5
QXC
1SMA11CAT3
11
12.2
1
18.2
22.0
2.5
QZC
1SMA12CAT3
12
13.3
1
19.9
20.1
2.5
REC
1SMA13CAT3
13
14.4
1
21.5
18.6
2.5
RGC
1SMA14CAT3
14
15.6
1
23.2
17.2
2.5
RKC
1SMA15CAT3
15
16.7
1
24.4
16.4
2.5
RMC
1SMA16CAT3
16
17.8
1
26.0
15.4
2.5
RPC
1SMA17CAT3
17
18.9
1
27.6
14.5
2.5
RRC
* TOLERANCE AND VOLTAGE DESIGNATION Tolerance designation The type number listed indicates a tolerance of
5%.
(continued)
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order this document
by 1SMA10CAT3/D
Motorola, Inc. 1996
1SMA10CAT3
through
1SMA78CAT3
PLASTIC SURFACE MOUNT
BIDIRECTIONAL
ZENER OVERVOLTAGE
TRANSIENT SUPPRESSORS
10 78 VOLTS VR
400 WATTS PEAK POWER
SMA
CASE 403B01
PLASTIC
REV 1
MOTOROLA
2
1SMA10CAT3 through 1SMA78CAT3
ELECTRICAL CHARACTERISTICS -- continued
D
i
Reverse
Breakdown Voltage
Maximum
Reverse Voltage
Maximum
Reverse
Maximum
D
Device
Standoff
Voltage VRWM
(Volts)
VBR
Volts
(Min)
IT
mA
Reverse Voltage
@ IRSM
(Clamping Voltage)
VRSM (Volts)
Reverse
Surge Current
IRSM
(Amps)
Reverse Leakage
@ VRWM
IR (
A)
Devce
Marking
1SMA18CAT3
18
20
1
29.2
13.7
2.5
RTC
1SMA20CAT3
20
22.2
1
32.4
12.3
2.5
RVC
1SMA22CAT3
22
24.4
1
35.5
11.3
2.5
RXC
1SMA24CAT3
24
26.7
1
38.9
10.3
2.5
RZC
1SMA26CAT3
26
28.9
1
42.1
9.5
2.5
SEC
1SMA28CAT3
28
31.1
1
45.4
8.8
2.5
SGC
1SMA30CAT3
30
33.3
1
48.4
8.3
2.5
SKC
1SMA33CAT3
33
36.7
1
53.3
7.5
2.5
SMC
1SMA36CAT3
36
40
1
58.1
6.9
2.5
SPC
1SMA40CAT3
40
44.4
1
64.5
6.2
2.5
SRC
1SMA43CAT3
43
47.8
1
69.4
5.8
2.5
STC
1SMA45CAT3
45
50
1
72.2
5.5
2.5
SVC
1SMA48CAT3
48
53.3
1
77.4
5.2
2.5
SXC
1SMA51CAT3
51
56.7
1
82.4
4.9
2.5
SZC
1SMA54CAT3
54
60
1
87.1
4.6
2.5
TEC
1SMA58CAT3
58
64.4
1
93.6
4.3
2.5
TGC
1SMA60CAT3
60
66.7
1
96.8
4.1
2.5
TKC
1SMA64CAT3
64
71.1
1
103.0
3.9
2.5
TMC
1SMA70CAT3
70
77.8
1
113.0
3.5
2.5
TPC
1SMA75CAT3
75
83.3
1
121.0
3.3
2.5
TRC
1SMA78CAT3
78
86.7
1
126.0
3.2
2.5
TSC
* TOLERANCE AND VOLTAGE DESIGNATION Tolerance designation The type number listed indicates a tolerance of
5%.
3
MOTOROLA
1SMA10CAT3 through 1SMA78CAT3
RATING AND TYPICAL CHARACTERISTIC CURVES
TA = 25
C
PW (ID) IS DEFINED AS THE
POINT WHERE THE PEAK CURRENT
DECAYS TO 50% OF Ipp.
= 10
s
PEAK VALUE
Ippm
HALF VALUE Ipp/2
10/1000
s WAVEFORM
AS DEFINED BY R.E.A.
td
120
100
80
60
40
0
0
1
2
3
4
20
5
Figure 1. Pulse Rating Curve
104
100
0.1
1
10
10
1
0.1
tP, PULSE WIDTH (ms)
P
pk
NONREPETITIVE
PULSE WAVEFORM
SHOWN IN FIGURE 2.
TA = 25
C
, PEAK POWER (kW)
0.01
0.001
Figure 2. Pulse Waveform
t, TIME (ms)
I ppm
, PEAK PULSE CURRENT
(%)
Figure 3. Pulse Derating Curve
120
100
80
60
40
0
0
40
80
120
160
TA, AMBIENT TEMPERATURE (
C)
PEAK
PULSE
DERA
TING IN % OF
20
200
PEAK POWER OR CURRENT
10 x 1000 WAVEFORM
AS DEFINED BY R.E.A.
MOTOROLA
4
1SMA10CAT3 through 1SMA78CAT3
OUTLINE DIMENSIONS
CASE 403B01
ISSUE O
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
S
A
D
B
K
J
C
H
DIM
MIN
MAX
MIN
MAX
MILLIMETERS
INCHES
A
0.160
0.180
4.06
4.57
B
0.090
0.115
2.29
2.92
C
0.075
0.105
1.91
2.67
D
0.050
0.064
1.27
1.63
H
0.004
0.008
0.10
0.20
J
0.006
0.016
0.15
0.41
K
0.030
0.060
0.76
1.52
S
0.190
0.220
4.83
5.59
SMA
mm
inches
0.157
4.0
0.0787
2.0
0.0787
2.0
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages. "Typical" parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals"
must be validated for each customer application by customer's technical experts. Motorola does not convey any license under its patent rights nor the rights of
others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
Opportunity/Affirmative Action Employer.
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1SMA10CAT3/D
*1SMA10CAT3/D*
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