AIRCRAFT DC POWER BUS PROTECTION
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i
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S C O T TS DALE DIVISION
RT65KP48A thru RT65KP75CA, e3
RT65KP48
A
–75CA,
e3
DESCRIPTION
APPEARANCE
Microsemi’s 65 kW bidirectional Transient Voltage Suppressors (TVSs)
protects 28 volt dc airborne electronic equipment from harsh lightning
environments per RTCA/DO-160E Section 22 and is compatible with
Section 16, paragraph 16.6.2.4 Category A for 46.3 V, Category B for 60 V,
and Category Z for 80 V high-line surges. It is also optionally available with
screening in accordance with MIL-PRF-19500 or avionics screening as
described in the Features section. It is also available as RoHS Compliant
(annealed matte-Tin finish) with an e3 suffix added to the part number.
Microsemi also offers a broad spectrum of other TVSs to meet your needs.
FEATURES
APPLICATIONS / BENEFITS
Unidirectional TVS construction with A suffix or
bidirectional with a CA suffix
Suppresses transients up to 65 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
oC to +125oC (10X), surge (3X) in
each direction, 24 hours HTRB in each direction, and post
test (VBR and ID)
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
Pin injection protection per RTCA/DO-160E up to Level
5 for Waveform 4 (6.4/69 s) and up to Level 3 for
Waveform 5A (40/120
μs) at 70oC
Compatible with “abnormal surge voltage (dc)” in
16.6.2.4 (Category A, B, and Z) of RTCA/DO-160E
The RT65KP48A is designed for Category A in
protecting 80V components**
The RT65KP54A or 60A is designed for Category B in
protecting 90V or 100 V components**
The RT65KP75A is designed for Category Z in
protecting 125 V components**
Consult Factory for other voltages with similar Peak
Pulse Power capabilities.
**includes switching transistors, MOSFETs & IGBTs
in off-line switching power supplies
MAXIMUM RATINGS
MECHANICAL & PACKAGING
Steady-state power dissipation: 7 W @ TL = 25
oC
Peak Pulse Power (PPP) at 25
oC: 65 kW at 6.4/69 s per
waveform in Figure 8 (derate per Figure 2)
Repetition rate: 0.01% max.
Operating & storage temperatures: -55
oC to +150oC
Temperature coefficient of voltage: +0.100%/
oC max
Solder Temperatures: 260
oC for 10 s maximum
CASE: Molded Epoxy (meets UL94V-O requirements)
FINISH: Tin-Lead or RoHS Compliant matte-Tin
plating solderable per MIL-STD-750, method 2026
Polarity: Cathode marked with band for unidirectional
(no band required for bi-directional)
MARKING: Manufacturers logo and part number.
Add prefix MA, MQ, MX, etc., for screened parts.
Package dimensions: See last page
ELECTRICAL PARAMETERS @ 25oC Devices are Bidirectional
Working
Standoff
Voltage
VWM
Maximum
Standby
Current
ID @ VWM
Minimum
Breakdown
Voltage
VBR @ I(BR)
Breakdown
Current
I(BR)
Maximum
Clamping
Voltage
VC @ IPP (Note 1)
Peak Pulse
Current
IPP @ 6.4/69 μs
(Note 2)
MICROSEMI PART
NUMBER
(replace A suffix with
CA for bidirectional)
V max
μA
V
mA
V
A
RT65KP48A
48
5
53.3
5
77.7
836
RT65KP54A
54
5
60.0
5
87.5
742
RT65KP60A
60
5
66.7
5
97.3
668
RT65KP75A
75
5
83.3
5
122
533
NOTE 1: See MicroNote 108 for lower Clamping Voltage performance at lower IP values relative to IPP and PPP ratings and Figure 1.
NOTE 2: Equivalent to ratings of 257, 228, 205, and 164 Amps of 20 kW at a longer 10/1000 μs impulse (see Figure 1) with
clamping voltages shown for the RT65KP48A, 54A, 60A, and 75A part numbers respectively. Also see Peak Pulse Power
Microsemi
Scottsdale Division
Page 1
(PPP) performance levels for other aircraft waveforms on page 3 for this device series.
Copyright
2007
6-20-2007 REV B
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503