RTCA65KP48A thru RTCA65KP75CA, e3
AIRCRAFT DC POWER BUS PROTECTION
S C O T T S D A L E D I V I S I O N
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.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
FEATURES
APPLICATIONS / BENEFITS
•
Unidirectional TVS construction with A suffix or
bidirectional with a CA suffix
•
Pin injection protection per RTCA/DO-160E up to Level
5 for Waveform 4 (6.4/69 µs) 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
•
•
•
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 -55oC to +125oC (10X), surge (3X) in
each direction, 24 hours HTRB in each direction, and post
test (VBR and ID)
The RTCA65KP48A is designed for Category A in
protecting 80V components**
The RTCA65KP54A or 60A is designed for Category B
in protecting 90V or 100 V components**
•
Options for screening in accordance with MIL-PRF-19500
for JAN, JANTX, JANTXV, and JANS are also available
by adding MQ, MX, MV, or MSP prefixes respectively to
part numbers.
The RTCA65KP75A is designed for Category Z in
protecting 125 V components**
Consult Factory for other voltages with similar Peak
Pulse Power capabilities.
•
•
Moisture classification is Level 1 with no dry pack required
per IPC/JEDEC J-STD-020B.
**includes switching transistors, MOSFETs & IGBTs
in off-line switching power supplies
RoHS Compliant devices available by adding “e3” suffix
MAXIMUM RATINGS
MECHANICAL & PACKAGING
•
•
Steady-state power dissipation: 7 W @ TL = 25oC
•
•
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)
Peak Pulse Power (PPP) at 25oC: 65 kW at 6.4/69 µs per
waveform in Figure 8 (derate per Figure 2)
•
•
•
•
•
•
•
Repetition rate: 0.01% max.
Operating & storage temperatures: -55oC to +150oC
Temperature coefficient of voltage: +0.100%/oC max
Solder Temperatures: 260oC for 10 s maximum
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
Peak Pulse
Current
IPP @ 6.4/69 μs
(Note 2)
Working
Standoff
Voltage
VWM
Maximum
Standby
Current
ID @ VWM
μA
Minimum
Breakdown
Voltage
Maximum
Clamping
Voltage
MICROSEMI PART
NUMBER
Breakdown
Current
I(BR)
VBR @ I(BR)
VC @ IPP (Note 1)
(replace A suffix with
CA for bidirectional)
V max
V
mA
V
A
RTCA65KP48A
RTCA65KP54A
RTCA65KP60A
RTCA65KP75A
48
54
60
75
5
5
5
5
53.3
60.0
66.7
83.3
5
5
5
5
77.7
87.5
97.3
122
836
742
668
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 RTCA65KP48A, 54A, 60A, and 75A part numbers respectively. Also see Peak Pulse Power
(PPP) performance levels for other aircraft waveforms on page 3 for this device series.
Copyright © 2005
8-08-2005 REV 0
Microsemi
Scottsdale Division
Page 1
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
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