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
Plastic package has Underwriters Laboratory Flammability
Classification 94V-0
500W surge capability at 10 X 1000us waveform, duty cycle:
0.01%
Excellent clamping capability
Low incremental surge resistance
Fast response time: Typically less than 1.0ps from 0 volts to
VBR for unidirectional and 5.0 nS for bidirectional
O
High temperature soldering guaranteed: 260 C / 10 seconds
/ .375”,(9.5mm) lead length / 5lbs.,(2.3kg) tension
Idel for data line applications
Maximum junction capacitance at o volts is 50 pF
DO-15
Mechanical Data
Case: JEDEC DO-15 molded plastic over a
passicated junction
Lead: Axial leads, solderable per MIL-STD-
750, Method 2026
Polarity: Color band denotes cathode except
bipolar
Weight: 0. 4 gram, 0.015 ounce
Dimensions in inches and (millimeters)
Maximum Ratings and Electrical Characteristics
Rating at 25℃ambient temperature unless otherwise specified.
Type Number
P
eak
P
ower
D
issipation at
T
A
=25 C, Tp=1ms
(
N
ote 1)
O
Symbol
P
PK
P
D
T
J
, T
STG
Value
Minimum 500
3.0
-55 to + 175
O
Units
Watts
Watts
O
Steady State Power Dissipation at T
L
=75
O
C
Lead Lengths .375”, 9.5mm
Operating and Storage Temperature Range
C
Notes: 1. Non-repetitive Current Pulse Per Fig. 3 and Derated above T
A
=25 C Per Fig. 2.
- 638 -
ELECTRICAL CHARACTERISTICS (TA=25
O
C unless otherwise noted)
Device
Breakdown Voltage Test
Stand-Off
Maximum
VBR
Current Voltage Reverse Leakage
(Volts) (Note 1)
@IT
VWM
at VWM
Min
SAC5.0
SAC6.0
SAC7.0
SAC8.0
SAC8.5
SAC10
SAC12
SAC15
SAC18
SAC22
SAC26
SAC30
SAC36
SAC45
SAC50
7.60
7.90
8.33
8.89
9.44
11.10
13.30
16.70
20.00
24.40
28.90
33.30
40.00
50.00
55.50
Max
9.21
9.51
10.2
10.9
11.5
13.6
16.3
20.4
24.4
29.8
35.3
40.7
48.9
61.1
68.3
(mA)
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
(Volts)
5.0
6.0
7.0
8.0
8.5
10
12
15
18
22
26
30
36
45
50
ID (uA)
300
300
300
100
50
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
Maximum
Peak Pulse
Current IPPM
(Note 2)(Amps)
44
41
38
36
34
29
25
20
15
14
11.1
10.0
8.6
6.8
5.8
Maximum
Clamping
Voltage at IPPM
VC(Volts)
10.00
11.2
12.6
13.4
14.0
16.3
19.0
23.6
28.8
35.4
42.3
48.6
60.0
77.0
88.0
Maximum
Temperature
Coefficient
of VBR mV / C)
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
O
Note: There are A suffix for types SAC 5.0 thru type SAC 50. "A" : + / - 5% tolerance.
Notes:
1.
Diode
Schematic
Low Capacitance
TVS
Translent
Voltage
Suppressor
2. Device must be used with two units in parallel,
opposite in polarity as shown in circuit for AC
signal line protection
- 639 -
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, I C RS-485, RS-422 and USB, for ESD protection the lines which
have signal, or data. Please refer as below:
1). Token Ring
2). I C
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
Low Capacitance
TVS
Low Capacitance
TVS
2
2
FIG. 1
FIG. 2
Device must be used with two units
in parallel, opposite in polarity as shown
in circuit for AC signal line protection
- 640 -
RATINGS AND CHARACTERISTIC CURVES (SAC SERIES)
FIG.1- PEAK PULSE POWER RATING CURVE
100
FIG.2- PULSE DERATING CURVE
Average Power
10
Impulse
Exponential
Decay
Non-repetitive Pulse
Waveform shown in Fig.3
T
A
=25
0
C
PERCEMTAGE OF RATED POWER (%)
30
P
PPM
, PEAK PULSE POWER (KW)
75
Peak Power
(single pulse)
50
P
PK".
5
tld
1
P
PK
td
Half Sine
td=7tp
25
P
PK
Square
td
Current Waveform
0.1
0.1 s
1.0 s
10 s
100 s
0
1.0ms
10ms
0
50
100
O
150
175
tp, PULSE WIDTH, (sec.)
T
L,
LEAD TEMPERATURE( C)
FIG.3- PULSE WAVEFORM
150
T
j
=25
0
C
Pulse Width (td)
is defined sa the point
where the peak current
decays to 50% of l
PPM
I
PPM
-PEAK PULSE CURRENT, % I
PSM
tr=10
m
sec.
Peak Value
l
PPM
100
HALF VALUE - IPP
l
PPM
2
50
10/1000
m
sec. Waveform
as defined by R.E.A.
td
0
0
1.0
2.0
t TIME (ms)
3.0
4.0
- 641 -
51单片机
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