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SAC SERIES
Low Capacitance Transient Voltage Suppressor Diodes
Voltage Range
5.0 to 50 Volts
500 Watts Peak Power
1.0 Watt Steady State
Features
a Plastic package has Underwriters Laboratory Flammability
Classification 94V-0
a 500W surge capability at 10 X 10us waveform, duty cycle:
0.01%
a Excellent clamping capability
a Low incremental surge resistance
a Fast response time: Typically less than 1.0ps from 0 volts to
VBR for unidirectional and 5.0 nS for bidirectional
a High temperature soldering guaranteed: 250OC / 10 seconds
/ .375”,(9.5mm) lead length / 5lbs.,(2.3kg) tension
a Idel for data line applications
a Maximum junction capacitance at o volts is 50 pF
Mechanical Data
a Case: JEDEC DO-15 molded plastic over a
passicated junction
a Lead: Axial leads, solderable per MIL-STD-
750, Method 2026
a Polarity: Color band denotes cathode except
bipolar
a Weight: 0. 4 gram, 0.015 ounce
DO-15
Dimensions in inches and (millimeters)
Maximum Ratings and Electrical Characteristics
Rating at 25ambient temperature unless otherwise specified.
Type Number Symbol Value Units
Peak Power Dissipation at TA=25OC, Tp=1ms
(Note 1) PPK Minimum 500 Watts
Steady State Power Dissipation at TL=75 OC
Lead Lengths .375”, 9.5mm PD3.0 Watts
Operating and Storage Temperature Range TJ, TSTG -55 to + 175 OC
Note: Non-repetitive Current Pulse Per Fig. 3 and Derated above T
A
=25OC Per Fig. 2.
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Schematic
Diode
Translent
Voltage
Suppressor
Low Capacitance
TVS
ELECTRICAL CHARACTERISTICS (TA=25OC unless otherwise noted)
Test Stand-Off Maximum Maximum Maximum Maximum
Device Current Voltage Reverse Leakage Peak Pulse Clamping Temperature
(Volts) (Note 1) @IT VWM at VWM Current IPPM Voltage at IPPM Coefficient
Min Max (mA) (Volts) ID (uA) (Note 2)(Amps) VC(Volts) of VBR mV / OC)
SAC5.0 7.60 9.21 1.0 5.0 300 44 10.00 50
SAC6.0 7.90 9.51 1.0 6.0 300 41 11.2 50
SAC7.0 8.33 10.2 1.0 7.0 300 38 12.6 50
SAC8.0 8.89 10.9 1.0 8.0 100 36 13.4 50
SAC8.5 9.44 11.5 1.0 8.5 50 34 14.0 50
SAC10 11.10 13.6 1.0 10 5.0 29 16.3 50
SAC12 13.30 16.3 1.0 12 5.0 25 19.0 50
SAC15 16.70 20.4 1.0 15 5.0 20 23.6 50
SAC18 20.00 24.4 1.0 18 5.0 15 28.8 50
SAC22 24.40 29.8 1.0 22 5.0 14 35.4 50
SAC26 28.90 35.3 1.0 26 5.0 11.1 42.3 50
SAC30 33.30 40.7 1.0 30 5.0 10.0 48.6 50
SAC36 40.00 48.9 1.0 36 5.0 8.6 60.0 50
SAC45 50.00 61.1 1.0 45 5.0 6.8 77.0 50
SAC50 55.50 68.3 1.0 50 5.0 5.8 88.0 50
Note: There are A suffix for types SAC 5.0 thru type SAC 50. "A" : + / - 5% tolerance.
Notes: 1.
2. Device must be used with two units in parallel,
opposite in polarity as shown in circuit for AC
signal line protection
Breakdown Voltage
VBR
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Characteristics and Application
SAC is a Transient Voltage Suppressor Diode in series with a compensation diode
for low capacitance.
Transient Voltage Suppressors may be used at various points in a circuit to
provide various degrees of protection.
Transient Voltage Suppressor provides excellent clamping capability.
Since the low incremental surge resistance.
For telecommumication : multi-protocol serial transceivers. Please refer as below:
-) Cellular
-) Universal series bus (USB) port production.
-) Instrumentation.
-) LAN / WAN equipment.
-) Peripherals.
-) High speed data lines.
Tow devices are used in parallel and opposite polarity for protecting one
bi-directional ines (FIG. 1), or with a steeling diode for protecting one
unidirectional (FIG. 2).
The low capacitance TVS series are used on high speeded interfaces such as
video line, I2C RS-485, RS-422 and USB, for ESD protection the lines which
have signal, or data. Please refer as below:
1). Token Ring
2). I2C FIG. 1 FIG. 2
3). Video line
4). Set top box I/O
5). LAN / WAN equipment.
6). Security system
7). Automatic teller machine
8). HFC system
9). Networks
Device must be used with two units
in parallel, opposite in polarity as shown
in circuit for AC signal line protection
Low Capacitance
TVS
Low Capacitance
TVS
RATINGS AND CHARACTERISTIC CURVES (SAC SERIES)
FIG.2- PULSE DERATING CURVE
Percemtage of Rated Power (%)
050 100 150 175
0
25
50
75
100
T Lead Temperature( C)
L,o
FIG.3- PULSE WAVEFORM
I -Peak Pulse Current, % I
PPM PSM
00 1.0 2.0 3.0 4.0
100
150
50
t Time (ms)
T =25 C
Pulse Width (td)
is defined sa the point
where the peak current
decays to 50% of l
j
0
PPM
td
tr=10 sec.m
10/1000 sec. Waveform
as defined by R.E.A.
m
Peak Value
l
PPM
HALF VALUE - IPP
l
PPM 2
FIG.1- PEAK PULSE POWER RATING CURVE
P , Peak Pulse Power (kw)
PPM
0.1 s 100 s 1.0ms 10ms
10 s
1.0 s
0.1
30
10
1.0
tp, Pulse Width, (sec.)
Non-repetitive Pulse
Waveform shown in Fig.3
T =25 C
A
0
Impulse
Exponential
Decay
Half Sine
Square
Current Waveform
td
td
P
PK
P
PK
P
PK".
5
tld
td=7tp
Average Power
Peak Power
(single pulse)
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