RT130KP275CV, RT130KP275CA,
RT130KP295CV, RT130KP295CA, e3
AIRCRAFT AC POWER BUS PROTECTION
SCOTTSDALE DIVISION
DESCRIPTION
Microsemi’s
RT130KP275 and RT130KP295
bidirectional 130 kW
Transient Voltage Suppressors (TVSs) protects 120 volt ac airborne
electronic equipment from harsh lightning per
RTCA/DO-160E
Section 22
and is compatible with Section 16 for 180 volt ac 100 ms highline surges
(paragraph 16.5.2.3.1b). Microsemi also offers a broad spectrum of other
TVS products to meet your needs.
IMPORTANT:
For the most current data, consult
MICROSEMI’s
website:
http://www.microsemi.com
APPEARANCE
WWW .
Microsemi
.C
OM
FEATURES
•
•
•
•
•
•
Symmetrical bidirectional TVS construction
Two Working Standoff Voltages of 275 V and 295 V
Available as either low clamp with “CV” suffix or normal
clamping features with “CA” suffix.
Suppresses transients up to
130 kW @ 6.4/69 µs
Fast response with less than 5 ns turn-on time.
Optional 100%
screening for avionics grade
is available
by adding
MA
prefix to part number for added 100%
temperature cycle -55
o
C to +125
o
C (10X), surge (3X) in
each direction, 24 hours HTRB in each direction, and post
test (V
Z
and I
R
)
Options for
screening
in accordance with MIL-PRF-19500
for JAN JANTX, and JANTXV
are also available by adding
MQ, MX, or MV prefixes respectively to part numbers
Moisture classification is Level 1 with no dry pack required
per IPC/JEDEC J-STD-020B
RoHS Compliant devices available by adding “e3” suffix
APPLICATIONS / BENEFITS
•
Pin injection protection per RTCA/DO-160E Table 22-
2 up to Level 5 for Waveform 4 (6.4/69 µs) and Level
3 for Waveform 5A (40/120
μs)
at 70
o
C
•
Compatible with “abnormal surge voltage” as
described in 16.5.2.3.1b of RTCA/DO-160E
•
The very low clamping with “CV” suffix is designed for
low clamping protection of 400V transistors, IGBTs
and MOSFETs in off-line switching power supplies.
•
The normal clamp device with “CA” suffix is for use in
less-sensitive applications including RFI/EMI filters
and general across-the-line protection.
•
Consult Factory for other voltages with similar Peak
Pulse Power capabilities.
•
Secondary lightning protection per IEC61000-4-5 with
12 Ohms source impedance for Class 1,2, 3 and 4
•
Secondary lightning protection per IEC61000-4-5 with
2 Ohms source impedance for Class 2 and 3
•
Consult Factory for other voltages with similar Peak
Pulse Power capabilities
•
•
•
MAXIMUM RATINGS
•
•
•
•
•
•
Steady-state power dissipation: 7 W @ T
L
= 25
o
C or
1.6 W @ T
A
= 25
o
C when mounted on FR4 PC board.
Peak Pulse Power (P
PP
) at 25
o
C: 130 kW at 6.4/69 µs per
waveform in Figure 8 (derate per Figure 2)
Repetition rate: 0.001% max for T
A
= 25
o
C
o
o
Operating & storage temperatures: -55 C to +150 C
Temperature coefficient of voltage: +0.100%/
o
C max
Solder Temperatures: 260
o
C for 10 s maximum
Working
Standoff
Voltage
V
WM
V max
Maximum
Standby
Current
I
D
@ V
WM
μA
Minimum
Breakdown
Voltage
V
BR
@ I
(BR)
Volts
MECHANICAL & PACKAGING
•
CASE: Molded Epoxy (meets UL 94V-0
requirements)
•
FINISH: Tin-Lead or RoHS Compliant annealed
matte-Tin plating solderable per MIL-STD-750,
method 2026
•
Polarity: No band required for bidirectional
•
MARKING: Manufacturers logo and part number
(add prefix MA, MQ, MX, etc., for screened parts)
•
Package dimensions: See last page
RT130KP275, 295CA &
RT130KP275, 295CV,e3
ELECTRICAL PARAMETERS @ 25
o
C
Devices are Bi-directional
Breakdown
Current
I
(BR)
mA
Maximum
Clamping
Voltage
V
C
@ I
PP
(Note 1)
Volts
Peak Pulse
Current
I
PP
@ 6.4/69
μs
(Note 2)
Amps
MICROSEMI PART
NUMBER
RT130KP275CV
275
5
300
5
292
400
RT130KP275CA
275
5
300
5
292
445
RT130KP295CV
295
5
300
5
282
410
RT130KP295CA
295
5
300
5
282
460
NOTE 1:
See MicroNote 108 for lower Clamping Voltage performance at reduced I
P
values relative to I
PP
and P
PP
ratings and Figure 1.
NOTE 2:
Also equivalent to 90 and 87 Amps (40 kW) respectively at a longer impulse of 10/1000
μs
(see Figure 1) with clamping voltages
shown. Also see other equivalent peak pulse power performance levels for aircraft waveforms on page 3 for this device.
Copyright
©
2010
1-24-2010 REV E; SD77A.pdf
Microsemi
Page 1
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
RT130KP275CV, RT130KP275CA,
RT130KP295CV, RT130KP295CA, e3
AIRCRAFT AC POWER BUS PROTECTION
SCOTTSDALE DIVISION
WWW .
Microsemi
.C
OM
GRAPHS
NOTE: This P
PP
vs. Time graph allows the designer to use these
parts over a broad power spectrum using the guidelines illustrated
in App Note 104 on Microsemi’s website. Aircraft transients are
described with exponential decaying waveforms. For suppression
of square waveforms, derate power and current to 66% of that for
exponential decay.
Peak Pulse Power (P
PP
) or continuous
o
Average Power in % of 25
C
rating
P
PP
Peak Pulse Power vs. Pulse Time – kW
Non-Repetitive Pulse
tp – Pulse Time – sec.
T
L
Lead Temperature
o
C
FIGURE 1
Peak Pulse Power vs. Pulse Time
To 50% of Exponentially Decaying Pulse
FIGURE 2
POWER DERATING
Correct
INSTALLATION
TVS devices used across power lines are
subject to relatively high magnitude surge
currents and are more prone to adverse
parasitic inductance effects in the mounting
leads. Minimizing the shunt path of the lead
inductance and their V= -Ldi/dt effects will
optimize the TVS effectiveness. Examples
of optimum installation and poor installation
are illustrated in figures 3 through figure 6.
Figure 3 illustrates minimal parasitic
inductance with attachment at end of device.
Inductive voltage drop is across input leads.
Virtually no “overshoot” voltage results as
illustrated with figure 4.
The loss of
effectiveness in protection caused by
excessive parasitic inductance is illustrated
in figures 5 and 6. Also see MicroNote 111
for further information on “Parasitic Lead
Inductance in TVS”.
Wrong
FIGURE 3
FIGURE 5
RT130KP275, 295CA &
RT130KP275, 295CV,e3
FIGURE 4
FIGURE 6
Copyright
©
2010
1-24-2010 REV E; SD77A.pdf
Microsemi
Page 2
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
RT130KP275CV, RT130KP275CA,
RT130KP295CV, RT130KP295CA, e3
AIRCRAFT AC POWER BUS PROTECTION
SCOTTSDALE DIVISION
WWW .
Microsemi
.C
OM
t
t – time
Note: frequency is 1MHz
t – time
t - Time
FIGURE 7 –
Waveform 3
FIGURE 8 –
Waveform 4
FIGURE 9 –
Waveform 5A
NOTE: The 1MHz damped oscillatory waveform (3) has an effective pulse width of 4
μs.
Equivalent peak pulse power for the RT130KP275CA and
RT130KP295CA at each of the pulse widths represented in RTCA/DO-160E for wave forms 3, 4 and 5A (above) have been determined referencing
Figure 1 herein as well as Application Notes 104 and 120 (found on Microsemi’s website) and are listed below.
WAVEFORM
NUMBER
PULSE WIDTH
μs
PEAK PULSE
POWER
kW
580
130
98
3
4
5A
4
6.4/69
40/120
Note: High current fast rise-time transients of 250 ns or less can more than triple the V
C
from parasitic inductance effects (V= -Ldi/dt) compared to the
clamping voltage shown in the initial Electrical Characteristics on page 1 as also described in Figures 5 and 6 herein.
DIMENSIONS
RT130KP275, 295CA &
RT130KP275, 295CV,e3
Copyright
©
2010
1-24-2010 REV E; SD77A.pdf
Microsemi
Page 3
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
