SAC5.0 thru SAC50 500 WATT LOW CAPACITANCE TRANSIENT VOLTAGE SUPPRESSOR SCOTTSDALE DIVISION APPEARANCE This SAC5.0 thru SAC50 transient voltage suppressor (TVS) series rated at 500 watts provides an added rectifier element as shown in Figure 4 to achieve low capacitance in applications for higher speed data or signal lines. The low capacitance rating of 30 pF may be used for protecting higher frequency applications in inductive switching environments or electrical systems involving secondary lightning effects per IEC61000-4-5 as well as RTCA/DO-160D or ARINC 429 for airborne avionics. If bidirectional protection is needed, two SAC devices in anti-parallel configuration are required as shown in Figure 6. With their very fast response time, they also provide ESD and EFT protection per IEC61000-42 and IEC61000-4-4 respectively. DO-41 WWW . Microsemi .C OM DESCRIPTION IMPORTANT: For the most current data, consult MICROSEMI's website: http://www.microsemi.com FEATURES * * * * * * * APPLICATIONS / BENEFITS Unidirectional low-capacitance TVS series for flexible thru-hole mounting (for bidirectional see Figure 4) Suppresses transient up to 500 Watts Peak Pulse Power @ 10/1000 s Improved performance in low capacitance of 30 pF Economical plastic series in flexible axial-leaded DO-41 package Options for screening in accordance with MIL-PRF19500 for JAN, JANTX, JANTXV, and JANS are also available by adding MQ, MX, MV, or MSP prefixes respectively to part number, e.g. MXSAC5.0, MVSAC18, etc. Also available in surface mount with SMAJ or SMBJ prefix for part numbers (ex. SMAJSAC5.0) UL94V-0 Flammability Classification * * * * MAXIMUM RATINGS * * * MECHANICAL AND PACKAGING o Peak Pulse Power Dissipation at 25 C: 500 Watts @ 10/1000 s with repetition rate of 0.01% or less* o Steady State Power Dissipation* at TL = +75 C: 2.5 Watts (Lead Length = 3/8"). Clamping Speed (0 volts to V(BR) Min.) less than 5 nanoseconds. o o Operating and Storage Temperature: -65 C to +150 C. * * * * * * CASE: Void Free Transfer Molded Thermosetting Plastic (DO-41) meeting UL94V-0 TERMINATIONS: Tin-lead plated and solderable per MILSTD-750 method 2026 POLARITY: Cathode indicated by band MARKING: Part number and cathode band WEIGHT: 0.7 Grams (Approx.) See package dimensions on last page * TVS devices are not typically used for dc power dissipation and are instead operated < VWM (rated standoff voltage) except for transients that briefly drive the device into avalanche breakdown (VBR to VC 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. Copyright 2004 4-26-2004 REV B Microsemi Scottsdale Division 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503 Page 1 SAC5.0 thru SAC50 * Low Capacitance for data-line protection to 70 MHz ESD and EFT protection per IEC61000-4-2 and IEC61000-4-4 respectively Secondary lightning protection per IEC61000-4-5 with 42 Ohms source impedance: Class 1: SAC5.0 to SAC50 Class 2: SAC5.0 to SAC45 Class 3: SAC5.0 to SAC22 Class 4: SAC5.0 to SAC10 Secondary lightning protection per IEC61000-4-5 with 12 Ohms source impedance Class 1: SAC5.0 to SAC26 Class 2: SAC5.0 to SAC15 Class 3: SAC5.0 to SAC7.0 SAC5.0 thru SAC50 500 WATT LOW CAPACITANCE TRANSIENT VOLTAGE SUPPRESSOR SCOTTSDALE DIVISION MICROSEMI PART NUMBER REVERSE STAND-OFF VOLTAGE (Note 1) VWM Volts SAC5.0 SAC6.0 SAC7.0 SAC8.0 SAC8.5 SAC10 SAC12 SAC15 SAC18 SAC22 SAC26 SAC36 SAC45 SAC50 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) 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 MAXIMUM PEAK PULSE CURRENT RATING MAXIMUM CAPACITANCE WORKING INVERSE BLOCKING VOLTAGE INVERSE BLOCKING LEAKAGE CURRENT PEAK INVERSE BLOCKING VOLTAGE Volts IPP Amps @ O Volts pF VWIB Volts VPIB 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 44 41 38 36 34 29 25 20 15 14 11.1 8.6 6.8 5.8 30 30 30 30 30 30 30 30 30 30 30 30 30 30 75 75 75 75 75 75 75 75 75 75 75 75 150 150 @ VWIB IIB A 10 10 10 10 10 10 10 10 10 10 10 10 10 10 MAXIMUM MAXIMUM STANDBY CLAMPING CURRENT VOLTAGE VC ID @VWM @ IP = 5.0A A 300 300 300 100 50 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 100 100 100 100 100 100 100 100 100 100 100 100 200 200 WWW . Microsemi .C OM ELECTRICAL CHARACTERISTICS @ 25oC * TVS devices are not typically used for dc power dissipation and are instead operated < VWM (rated standoff voltage) except for transients that briefly drive the device into avalanche breakdown (VBR to VC region) of the TVS element. Note 1: A transient voltage suppressor is normally selected according to voltage (VWM), which should be equal to or greater than the dc or continuous peak operating voltage level. Note 2: When pulse testing, test in TVS avalanche direction. Do not pulse in "forward" direction. See section for "Schematic Applications" herein. GRAPHS SAC5.0 thru SAC50 tw - Pulse Width s FIGURE 1 Copyright 2004 4-26-2004 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 SAC5.0 thru SAC50 SCOTTSDALE DIVISION 500 WATT LOW CAPACITANCE TRANSIENT VOLTAGE SUPPRESSOR IPP - Peak Pulse Current - % IPP % of Rated Power WWW . Microsemi .C OM Peak Power (Single Pulse) Average Power Lead Length = 3/8" o TL - Lead Temperature - C t - Time - msec FIGURE 2 FIGURE 3 SCHEMATIC APPLICATIONS The TVS low capacitance device configuration is shown in Figure 4. As a further option for unidirectional applications, an additional low capacitance rectifier diode may be used in parallel in the same polarity direction as the TVS as shown in Figure 5. In applications where random high voltage transients occur, this will prevent reverse transients from damaging the internal low capacitance rectifier diode and also provide a low voltage conducting direction. The added rectifier diode should be of similar low capacitance and also have a higher reverse voltage rating than the TVS clamping voltage VC. The Microsemi recommended rectifier part number is the "LCR60" for the application in Figure 5. If using two (2) low capacitance TVS devices in anti-parallel for bidirectional applications, this added protective feature for both directions (including the reverse of each rectifier diode) is also provided. The unidirectional and bidirectional configurations in Figure 5 and 6 will both result in twice the capacitance of Figure 4. Copyright 2004 4-26-2004 REV B FIGURE 5 Optional Unidirectional configuration (TVS and separate rectifier diode) in parallel) FIGURE 6 Optional Bidirectional configuration (two TVS devices in anti-parallel) Microsemi Scottsdale Division 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503 SAC5.0 thru SAC50 FIGURE 4 TVS with internal Low Capacitance Diode Page 3 SAC5.0 thru SAC50 SCOTTSDALE DIVISION 500 WATT LOW CAPACITANCE TRANSIENT VOLTAGE SUPPRESSOR WWW . Microsemi .C OM PACKAGE DIMENSIONS SAC5.0 thru SAC50 Copyright 2004 4-26-2004 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