MSAC5.0 – MSAC50A(e3)
Screened in reference
to MIL-PRF-19500
Available
500 Watt Low Capacitance
Transient Voltage Suppressors
DESCRIPTION
This family of MSAC5.0 through MSAC50A Transient Voltage Suppressors are high-reliability
controlled devices that offer thru-hole mounting. They feature unidirectional construction and
working standoff voltage (Vwm) selections from 5 to 50 volts. Microsemi also offers a great
variety of other Transient Voltage Suppressors to meet higher and lower power demands and
special applications.
Important:
For the latest information, visit our website
http://www.microsemi.com.
FEATURES
•
•
•
•
•
•
•
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•
High reliability controlled devices with wafer fabrication and assembly lot traceability.
100% surge testing of all devices.
Suppresses transients up to 500 W @ 10/1000 μs.
Working standoff voltage (V
WM
) values from 5 to 50 V.
5% and 10% voltage tolerance options.
Unidirectional low-capacitance device (30 pF). For bidirectional applications, see
Figure 6.
Various screening levels in reference to MIL-PRF-19500.
(Refer to
High Reliability Non-Hermetic Products portfolio
for more details on the screening options.)
Moisture classification is Level 1 with no dry pack required per IPC/JEDEC J-STD-020B.
3σ lot norm screening performed on standby current I
D
.
RoHS compliant versions available.
DO-41
(DO-204AL)
Package
APPLICATIONS / BENEFITS
•
•
Low Capacitance for data-line protection to 10 MHz.
Protection for fast data rate lines in aircraft up to:
-
RTCA/DO-160G - Level 3 Waveform 4 and Level 1 Waveform 5A (also see
MicroNote 130)
-
ARINC 429, Part 1, paragraph 2.4.1.1 up to bit rates of 100 kb/s
ESD and EFT protection per IEC61000-4-2 and IEC61000-4-4 respectively.
Secondary lightning protection per IEC 61000-4-5 with 42 ohms source impedance:
Class 1: MSAC5.0 to MSAC50
Class 2: MSAC5.0 to MSAC45
Class 3: MSAC5.0 to MSAC22
Class 4: MSAC5.0 to MSAC10
Secondary lightning protection per IEC 61000-4-5 with 12 ohms source impedance:
Class 1: MSAC5.0 to MSAC26
Class 2: MSAC5.0 to MSAC15
Class 3: MSAC5.0 to MSAC7.0
•
•
•
MSC – Lawrence
6 Lake Street,
Lawrence, MA 01841
Tel: 1-800-446-1158 or
(978) 620-2600
Fax: (978) 689-0803
MSC – Ireland
Gort Road Business Park,
Ennis, Co. Clare, Ireland
Tel: +353 (0) 65 6840044
Fax: +353 (0) 65 6822298
Website:
www.microsemi.com
RF01018, Rev. B (5/7/13)
©2013 Microsemi Corporation
Page 1 of 6
MSAC5.0 – MSAC50A(e3)
MAXIMUM RATINGS
@ 25 ºC unless otherwise stated
Parameters/Test Conditions
Junction and Storage Temperature
Peak Pulse Power Dissipation @ 10/1000
µs
o
(2)
Average Power Dissipation @ T
L
= +75 C
Clamping Speed (0 volts to V
(BR)
min.)
Solder Temperature @ 10 s
(1)
Symbol
T
J
and T
STG
P
PP
P
M(AV)
T
SP
Value
-65 to +150
500
2.5
<5
260
Unit
o
C
W
W
ns
o
C
Notes:
1. With impulse repetition rate (duty factor) of 0.01 % max. TVS devices are not typically used for dc
power dissipation and are instead operated ≤ V
WM
(rated standoff voltage) except for transients that
briefly drive the device into avalanche breakdown (V
(BR)
to V
C
region) of the TVS element. Also see
Figures 5 and 6
for further protection details in rated peak pulse power for unidirectional and
bidirectional configurations respectively.
2. At 3/8 (10 mm) lead length from body.
MECHANICAL and PACKAGING
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•
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CASE: Void-free transfer molded thermosetting epoxy body meeting UL94V-0.
TERMINALS: Tin-lead or RoHS compliant annealed matte-tin plating. Solderable per MIL-STD-750, method 2026.
MARKING: Part number.
POLARITY: Cathode indicated by band.
TAPE & REEL option: Standard per EIA-296 (add “TR” suffix to part number). Consult factory for quantities.
WEIGHT: Approximately 0.7 grams.
See
Package Dimensions
on last page.
PART NOMENCLATURE
M
Reliability Level*
M (controlled product)
MA (Avionics grade)
MX (reference JANTX)
MXL (MX Lite)
*see
High Reliability Non-
Hermetic Products portfolio
SAC
5.0
A
e3
RoHS Compliance
e3 = RoHS compliant
Blank = non-RoHS compliant
Voltage Tolerance
A = 5% tolerance level
Blank = 10% tolerance
Series ID
Stand-off Voltage Rating
RF01018, Rev. B (5/7/13)
©2013 Microsemi Corporation
Page 2 of 6
MSAC5.0 – MSAC50A(e3)
SYMBOLS & DEFINITIONS
Definition
Breakdown Current: The current used for measuring Breakdown Voltage V
(BR)
.
Standby Current: The current through the device at rated stand-off voltage.
Peak Impulse Current: The maximum rated random recurring peak impulse current or nonrepetitive peak impulse
current that may be applied to a device. A random recurring or nonrepetitive transient current is usually due to an
external cause, and it is assumed that its effect will have completely disappeared before the next transient arrives.
Peak Pulse Power. The rated random recurring peak impulse power or rated nonrepetitive peak impulse power. The
impulse power is the maximum-rated value of the product of I
PP
and V
C
.
Breakdown Voltage: The voltage across the device at a specified current I
(BR)
in the breakdown region.
Clamping Voltage: The voltage across the device in a region of low differential resistance during the application of an
impulse current (I
PP
) for a specified waveform.
Working Standoff Voltage: The maximum-rated value of dc or repetitive peak positive cathode-to-anode voltage that
may be continuously applied over the standard operating temperature.
Symbol
I
(BR)
I
D
I
PP
P
PP
V
(BR)
V
C
V
WM
ELECTRICAL CHARACTERISTICS
@ 25 C unless otherwise stated
WORKING
STAND-
OFF
VOLTAGE
(Note 1)
V
WM
Volts
5.0
6.0
7.0
8.0
8.5
10
12
15
18
22
26
36
45
50
BREAKDOWN
VOLTAGE
V
BR
@ I
BR
1.0mA
V
(BR)
MAXIMUM
STANDBY
CURRENT
I
D
@ V
WM
MAXIMUM
CLAMPING
VOLTAGE
V
C
@ I
P
= 5.0A
MAXIMUM
PEAK
PULSE
CURRENT
RATING
(Note 2)
I
PP
Amps
44
41
38
36
34
29
25
20
15
14
11.1
8.6
6.8
5.8
MAXIMUM
CAPACITANCE
@ 0 Volts
WORKING
INVERSE
BLOCKING
VOLTAGE
V
WIB
INVERSE
BLOCKING
LEAKAGE
CURRENT
@ V
WIB
I
IB
µA
10
10
10
10
10
10
10
10
10
10
10
10
10
10
PEAK
INVERSE
BLOCKING
VOLTAGE
V
PIB
o
PART
NUMBER
MSAC5.0
MSAC6.0
MSAC7.0
MSAC8.0
MSAC8.5
MSAC10
MSAC12
MSAC15
MSAC18
MSAC22
MSAC26
MSAC36
MSAC45
MSAC50
Volts (min)
7.60
7.90
8.33
8.89
9.44
11.10
13.30
16.70
20.00
24.40
28.90
40.0
50.00
55.50
A
300
300
300
100
50
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
Volts
10.0
11.2
12.6
13.4
14.0
16.3
19.0
23.6
28.8
35.4
42.3
60.0
77.0
88.0
pF
30
30
30
30
30
30
30
30
30
30
30
30
30
30
Volts
75
75
75
75
75
75
75
75
75
75
75
75
150
150
Volts
100
100
100
100
100
100
100
100
100
100
100
100
200
200
Note 1:
A Transient Voltage Suppressor is normally selected according to voltage (V
WM
), which should be equal to or greater than the dc or
continuous peak operating voltage level.
Test in TVS avalanche direction. Do not pulse in “forward” direction. See section for
Application Schematics
herein.
Note 2:
RF01018, Rev. B (5/7/13)
©2013 Microsemi Corporation
Page 3 of 6
MSAC5.0 – MSAC50A(e3)
GRAPHS
(P
PP
) – Peak Pulse Power (kW)
tw – Pulse Width
FIGURE 1
Peak Pulse Power vs Pulse Time
% of Rated Power
T
L
– Lead Temperature - °C
Figure 2
Rated Power vs Lead Temperature
(At Lead Length = 3/8”)
RF01018, Rev. B (5/7/13)
©2013 Microsemi Corporation
Page 4 of 6
MSAC5.0 – MSAC50A(e3)
GRAPHS
(continued)
I
PP
– Peak Pulse Current (% I
PP
)
TEST WAVEFORM
PARAMETERS
t
r
= 10
µsec
t
d
= 1000
µsec
t – Time (msec)
Figure 3
Peak Pulse Current vs Time
RF01018, Rev. B (5/7/13)
©2013 Microsemi Corporation
Page 5 of 6
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