RT100KP33A thru RT100KP400CA, e3 SCOTTSDALE DIVISION Preferred 100 kW Transient Voltage Suppressor for AIRCRAFT POWER BUS PROTECTION DESCRIPTION APPEARANCE WWW . Microsemi .C OM Microsemi’s 100 kW Transient Voltage Suppressors (TVSs) are designed for aircraft applications requiring high power transient protection with a comparatively small axial-leaded package size. This includes various threats such as “Waveform 4” at 6.4/69 µs per RTCA/DO-160E Section 22. It is also available with screening in accordance with MIL-PRF-19500 or avionics screening as described in the Features section herein. It may also be optionally acquired with 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 Available in both Unidirectional and Bidirectional construction (Bidirectional with CA suffix) TVS selection for 33 to 400 V Standoff Voltages (VWM) Suppresses transients up to 100 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) 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 • • • • • • • MAXIMUM RATINGS • • • • • • MECHANICAL & PACKAGING Peak Pulse Power dissipation at 25ºC: 100 kW at 6.4/69 µs waveform in Figure 8 (also see figures 1 and 2) Impulse repetition rate: 0.005% tclamping (0 volts to VBR min): <100 ps theoretical for unidirectional and <5 ns for bidirectional Operating & storage temperatures: -65oC to +150oC Thermal resistance: 17.5C/W junction to lead, or 77.5C/W junction to ambient when mounted on FR4 PC board with 4 mm2 copper pads (1 oz ) and track width 1 mm, length 25 mm Steady-state power dissipation: 7 Watts @ TL = 27.5oC or 1.61 Watts at TA =25 oC when mounted on FR4 PC Board described for thermal resistance above Forward surge: 250 Amps 8.3 ms half-sine wave for unidirectional devices only Solder Temperatures: 260oC for 10 s maximum Copyright © 2007 10-03-2007 Rev B • • • • • • • CASE: Void free transfer molded thermosetting epoxy meeting 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. WEIGHT: 1.7 grams (approximate) TAPE & REEL option: Standard per EIA-296 for axial package (add “TR” suffix to part number) Package dimensions: See last page Microsemi Scottsdale Division 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503 Page 1 RT100KP33A – 400CA, e3 • • Protection from high power switching transients, induced RF, and lightning threats with comparatively small package size (0.25 inch diameter) Protection from ESD and EFT per IEC61000-4-2 and IEC61000-4-4 Pin injection protection per RTCA/DO-160E up to Level 4 for Waveform 4 (6.4/69 µs) on all devices Pin injection protection per RTCA/DO-160E up to Level 5 for Waveform 4 (6.4/69 µs) on device types RT100KP33A or CA up to RT100KP260A or CA Pin injection protection per RTCA/DO-160E up to Level 3 for Waveform 5A (40/120 µs) on all devices Pin injection protection per RTCA/DO-160E up to Level 4 for Waveform 5A (40/120 µs) on device types RT100KP33A or CA up to RT100KP64A or CA Consult Factory for other voltages with similar Peak Pulse Power capabilities. RT100KP33A thru RT100KP400CA, e3 Preferred 100 kW Transient Voltage Suppressor for AIRCRAFT POWER BUS PROTECTION SCOTTSDALE DIVISION Part Number (1) (4) RT100KP33A RT100KP36A RT100KP40A RT100KP43A RT100KP45A RT100KP48A RT100KP51A RT100KP54A RT100KP58A RT100KP60A RT100KP64A RT100KP70A RT100KP75A RT100KP78A RT100KP85A RT100KP90A RT100KP100A RT100KP110A RT100KP120A RT100KP130A RT100KP150A RT100KP160A RT100KP170A RT100KP180A RT100KP200A RT100KP220A RT100KP250A RT100KP260A RT100KP280A RT100KP300A RT100KP350A RT100KP400A Maximum Clamping @ IPP (2) VOLTS VOLTS mA VC VOLTS Maximum Reverse Leakage @ VWM ID μAmps 33 36 40 43 45 48 51 54 58 60 64 70 75 78 85 90 100 110 120 130 150 160 170 180 200 220 250 260 280 300 350 400 36.7-40.6 40.0-44.2 44.4-49.1 47.8-52.8 50.0-55.3 53.3-58.9 56.7-62.7 60.0-66.3 64.4-71.2 66.7-73.7 71.1-78.6 77.8-86.0 83.3-92.1 86.7-95.8 94.4-104 100-111 111-123 122-135 133-147 144-159 167-185 178-197 189-209 200-221 222-245 245-271 278-308 289-320 311-345 333-369 389-431 444-492 50 50 20 10 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 58.6 61.8 68.6 71.0 73.0 77.7 82.8 87.5 94.0 97.3 104 114 122 126 137 146 162 178 193 209 243 259 275 291 322 356 403 419 451 483 564 644 5000 5000 1500 500 150 150 50 25 15 15 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 Rated Stand-off Voltage VWM Breakdown Voltage V(BR) Volts @ I(BR) V(BR) I(BR) Maximum Peak Pulse Current (3) @6.4/69 µs IPP Amps Maximum V(BR) temperature Coefficient αV(BR) o mV/ C 1825 * 1672 * 1518 * 1432 * 1365 * 1285 * 1205 * 1139 * 1066 * 1012 * 959 * 879 819 793 726 686 619 559 519 473 413 386 366 346 313 280 246 236 220 206 176 153 38 41 46 50 52 56 60 63 68 71 76 83 89 93 102 109 121 133 145 157 183 195 207 219 243 269 306 318 344 368 430 490 WWW . Microsemi .C OM ELECTRICAL CHARACTERISTICS at 25ºC 1. For bidirectional construction, indicate a CA suffix (instead of A) after the part number 2. Clamping voltage does not include any variable parasitic lead inductance effects observed during the 6.4 µs rise time due to lead length. 3. The Maximum Peak Pulse Current (IPP) shown represents the performance capabilities by design. * Surge test screening is only performed up to 900 Amps (test equipment limitations). 4. Part numbers in bold italics are preferred devices. RT100KP33A – 400CA, e3 Copyright © 2007 10-03-2007 Rev B Microsemi Scottsdale Division 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503 Page 2 RT100KP33A thru RT100KP400CA, e3 TL Lead Temperature oC PPP Peak Pulse Power vs. Pulse Time – kW Non-Repetitive Pulse tp – Pulse Time – sec. FIGURE 1 Peak Pulse Power vs. Pulse Time To 50% of Exponentially Decaying Pulse INSTALLATION Correct FIGURE 3 FIGURE 2 POWER DERATING Wrong FIGURE 5 RT100KP33A – 400CA, e3 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”. FIGURE 4 Copyright © 2007 10-03-2007 Rev B WWW . Microsemi .C OM NOTE:GRAPHS This PPP versus 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 squarewave impulses, derate power and current to 66% of that for exponential decay shown in Figure 1. Peak Pulse Power (PPP) or continuous o Power in % of 25 C rating SCOTTSDALE DIVISION Preferred 100 kW Transient Voltage Suppressor for AIRCRAFT POWER BUS PROTECTION FIGURE 6 Microsemi Scottsdale Division 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503 Page 3 RT100KP33A thru RT100KP400CA, e3 Preferred 100 kW Transient Voltage Suppressor for AIRCRAFT POWER BUS PROTECTION SCOTTSDALE DIVISION WWW . Microsemi .C OM t t – time Note: frequency is 1MHz t – time FIGURE 7 – Waveform 3 t - Time 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 at each of the pulse widths represented in RTCA/DO-160E for waveforms 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 PEAK PULSE POWER μs 3 4 5A kW 340 100 70 4 6.4/69 40/120 Peak Pulse Current Conversion Factor * from Rated IPP at 6.4/69 µs 3.40x 1.00x 0.70x * Multiply by the conversion factor shown with reference to the maximum rated IPP in the Electrical Characteristics Table on page 2. Note: High current fast rise-time transients of 250 ns or less can more than triple the VC 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. Also see MicroNotes 127, 130, and 132 on the Microsemi website (Support section) for further information on Transient Voltage Suppressors with reference to aircraft industry specification RTCA/DO-160E. DIMENSIONS RT100KP33A – 400CA, e3 Copyright © 2007 10-03-2007 Rev B Microsemi Scottsdale Division 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503 Page 4