1
MOTOROLA
1SMA10CAT3 through 1SMA78CAT3
Specification Features:
•Reverse Stand–Off 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: Void–free, 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 µs (Note 1) Ppk 400 Watts
Thermal Resistance from Junction to Lead RθJL 29 °C/W
Thermal Resistance from Junction to Ambient RθJA 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. Non–repetitive current pulse.
ELECTRICAL CHARACTERISTICS
Di
Reverse Breakdown Voltage Maximum
Reverse Voltage
Maximum
Reverse
Maximum
D
Device Stand–off
Voltage VRWM
(Volts)
VBR
Volts
(Min)
IT
mA
R
everse
V
o
lt
age
@ IRSM
(Clamping Voltage)
VRSM (Volts)
R
everse
Surge Current
IRSM
(Amps)
Reverse Leakage
@ VRWM
IR (µA)
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 DESIGNA TION Tolerance designation – The type number listed indicates a tolerance of ±5%. (continued)
SEMICONDUCTOR TECHNICAL DATA Order this document
by 1SMA10CAT3/D
Motorola, Inc. 1996
PLASTIC SURFACE MOUNT
BIDIRECTIONAL
ZENER OVERVOLTAGE
TRANSIENT SUPPRESSORS
10–78 VOLTS VR
400 WATTS PEAK POWER
SMA
CASE 403B–01
PLASTIC
REV 1
MOTOROLA
21SMA10CAT3 through 1SMA78CAT3
ELECTRICAL CHARACTERISTICS — continued
Di
Reverse Breakdown Voltage Maximum
Reverse Voltage
Maximum
Reverse
Maximum
D
Device Stand–off
Voltage VRWM
(Volts)
VBR
Volts
(Min)
IT
mA
R
everse
V
o
lt
age
@ IRSM
(Clamping Voltage)
VRSM (Volts)
R
everse
Surge Current
IRSM
(Amps)
Reverse Leakage
@ VRWM
IR (µA)
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 DESIGNA TION 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
µ
s
PEAK VALUE
Ippm
HALF VALUE – Ipp/2
10/1000
µ
s WAVEFORM
AS DEFINED BY R.E.A.
td
120
100
80
60
40
001234
20
5
Figure 1. Pulse Rating Curve
10–4
100
0.1 1 10
10
1
0.1
tP, PULSE WIDTH (ms)
Ppk
NONREPETITIVE
PULSE W AVEFORM
SHOWN IN FIGURE 2.
TA = 25
°
C
, PEAK POWER (kW)
0.010.001
Figure 2. Pulse Waveform
t, TIME (ms)
Ippm, PEAK PULSE CURRENT (%)
Figure 3. Pulse Derating Curve
120
100
80
60
40
00 40 80 120 160
TA, AMBIENT TEMPERATURE (
°
C)
PEAK PULSE DERATING IN % OF
20
200
PEAK POWER OR CURRENT
10 x 1000 W AVEFORM
AS DEFINED BY R.E.A.
MOTOROLA
41SMA10CAT3 through 1SMA78CAT3
OUTLINE DIMENSIONS
CASE 403B–01
ISSUE O
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
S
A
DB
KJ
C
H
DIM MIN MAX MIN MAX
MILLIMETERSINCHES
A0.160 0.180 4.06 4.57
B0.090 0.115 2.29 2.92
C0.075 0.105 1.91 2.67
D0.050 0.064 1.27 1.63
H0.004 0.008 0.10 0.20
J0.006 0.016 0.15 0.41
K0.030 0.060 0.76 1.52
S0.190 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/Af firmative Action Employer.
How to reach us:
USA/EUROPE/Locations Not Listed: Motorola Literature Distribution; JAPAN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, 6F Seibu–Butsuryu–Center,
P.O. Box 20912; Phoenix, Arizona 85036. 1–800–441–2447 or 602–303–5454 3–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 03–81–3521–8315
MFAX: RMF AX0@email.sps.mot.com – T OUCHTONE 602–244–6609 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park,
INTERNET: http://Design–NET.com 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298
1SMA10CAT3/D
*1SMA10CAT3/D*
◊
