5.AT3G Series, SZ5.AT3G Series 4 Watt Peak Power Zener Transient Voltage Suppressors Unidirectional The series is designed to protect voltage sensitive components from high voltage, high energy transients. They have excellent clamping capability, high surge capability, low zener impedance and fast response time. The series is supplied in the Littelfuse exclusive, cost-effective, highly reliable package and is ideally suited for use in communication systems, automotive, numerical controls, process controls, medical equipment, business machines, power supplies and many other industrial/consumer applications. Features Working Peak Reverse Voltage Range 5. V to 78 V Standard Zener Breakdown Voltage Range 6.7 V to 9.25 V Peak Power 4 W @ ms ESD Rating of Class 3 (> 6 kv) per Human Body Model Response Time is Typically < ns Flat Handling Surface for Accurate Placement Package Design for Top Slide or Bottom Circuit Board Mounting Low Profile Package SZ Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC Q Qualified and PPAP Capable These are Pb Free Devices Mechanical Characteristics: CASE: Void-free, transfer-molded plastic FINISH: All external surfaces are corrosion resistant and leads are readily solderable MAXIMUM CASE TEMPERATURE FOR SOLDERING PURPOSES: 26 C for Seconds POLARITY: Cathode indicated by molded polarity notch or polarity band MOUNTING POSITION: Any PLASTIC SURFACE MOUNT ZENER OVERVOLTAGE TRANSIENT SUPPRESSORS 5. 78 V, 4 W PEAK POWER CATHODE CASE 43D STYLE MARKING DIAGRAM xx AYWW ANODE xx = Device Code (Refer to page 3) A = Assembly Location Y = Year WW = Work Week = Pb Free Package ORDERING INFORMATION Device Package Shipping xxat3g 5, / (Pb Free) Tape & Reel SZxxAT3G Littelfuse.com (Pb Free) 5, / Tape & Reel DEVICE MARKING INFORMATION See specific marking information in the device marking column of the Electrical Characteristics table on page 3 of this data sheet. Publication Order Number:
5.AT3G Series, SZ5.AT3G Series MAXIMUM RATINGS Rating Symbol Value Unit Peak Power Dissipation (Note ) @ T L = 25 C, Pulse Width = ms P PK 4 W DC Power Dissipation @ T L = 75 C Measured Zero Lead Length (Note 2) Derate Above 75 C Thermal Resistance from Junction to Lead DC Power Dissipation (Note 3) @ T A = 25 C Derate Above 25 C Thermal Resistance from Junction to Ambient Forward Surge Current (Note 4) @ T A = 25 C I FSM 4 A Operating and Storage Temperature Range T J, T stg 65 to +5 C P D R JL P D R JA.5 2 5.5 4. 25 W mw/ C C/W W mw/ C C/W Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected.. X s, non repetitive. 2. square copper pad, FR 4 board. 3. FR 4 board, using Littelfuse minimum recommended footprint, as shown in 43B case outline dimensions spec. 4. /2 sine wave (or equivalent square wave), PW = 8.3 ms, duty cycle = 4 pulses per minute maximum. ELECTRICAL CHARACTERISTICS (T A = 25 C unless otherwise noted, V F = 3.5 V Max. @ I F = 3 A for all types) (Note 5) Symbol I PP Parameter Maximum Reverse Peak Pulse Current I F I V C Clamping Voltage @ I PP I R Working Peak Reverse Voltage Maximum Reverse Leakage Current @ V C V BR I R I T V F V V BR Breakdown Voltage @ I T I T Test Current I F Forward Current I PP V F Forward Voltage @ I F 5. /2 sine wave or equivalent, PW = 8.3 ms, non repetitive duty cycle. Uni Directional TVS 2 Publication Order Number:
5.AT3G Series, SZ5.AT3G Series ELECTRICAL CHARACTERISTICS Device* Device Marking (Note 6) I R @ Breakdown Voltage V C @ I PP (Note 8) V BR (Volts) (Note 7) @ I T V C I PP C Typ. (Note 9) Volts A Min Nom Max ma Volts Amps pf 5.AT3G QE 5. 4 6.4 6.7 7. 9.2 43.5 235 6.AT3G QG 6. 4 6.67 7.2 7.37.3 38.8 73 6.5AT3G QK 6.5 25 7.22 7.6 7.98.2 35.7 65 8.AT3G QR 8. 25 8.89 9.36 9.83 3.6 29.4 35 8.5AT3G QT 8.5 5. 9.44 9.92.4 4.4 27.8 265 9.AT3G QV 9. 2.5.55. 5.4 26. 2 AT3G QX 2.5..7 2.3 7. 23.5 9 AT3G QZ 2.5 2.2 2.85 3.5 8.2 22. 2AT3G RE 2 2.5 3.3 4. 4.7 9.9 2. 925 3AT3G RG 3 2.5 4.4 5.5 5.9 2.5 8.6 86 4AT3G RH 4 2.5 5.6 6.4 7.2 23.2 7.2 8 5AT3G RM 5 2.5 6.7 7.6 8.5 24.4 6.4 758 6AT3G RP 6 2.5 7.8 8.75 9.7 26. 5.4 75 7AT3G RR 7 2.5 8.9 9.9 2.9 27.6 4.5 68 8AT3G RT 8 2.5 2 2.5 22. 29.2 3.7 645 2AT3G RV 2 2.5 22.2 23.35 24.5 32.4 2.3 585 22AT3G RX 22 2.5 24.4 25.65 26.9 35.5.3 54 24AT3G RZ 24 2.5 26.7 28. 29.5 38.9.3 5 26AT3G SE 26 2.5 28.9 3.4 3.9 42. 9.5 46 28AT3G SG 28 2.5 3. 32.75 34.4 45.4 8.8 43 3AT3G SK 3 2.5 33.3 35.5 36.8 48.4 8.3 45 33AT3G SM 33 2.5 36.7 38.65 4.6 53.3 7.5 375 36AT3G SP 36 2.5 4 42. 44.2 58. 6.9 345 4AT3G SR 4 2.5 44.4 46.75 49. 64.5 6.2 35 43AT3G ST 43 2.5 47.8 5.3 52.8 69.4 5.8 295 45AT3G SV 45 2.5 5 52.65 55.3 72.2 5.5 28 48AT3G SX 48 2.5 53.3 56. 58.9 77.4 5.2 265 54AT3G TE 54 2.5 6 63.5 66.3 87. 4.6 24 58AT3G TG 58 2.5 64.4 67.8 7.5 93.6 4.3 225 7AT3G TP 7 2.5 77.8 8.9 86. 3 3.5 9 6. A transient suppressor is normally selected according to the working peak reverse voltage ( ), which should be equal to or greater than the DC or continuous peak operating voltage level. 7. V BR measured at pulse test current I T at an ambient temperature of 25 C. 8. Surge current waveform per Figure 2 and derate per Figure 3. 9. Bias voltage = V, F =. MHz, T J = 25 C. Please see CAT3 to 75CAT3 for Bidirectional devices. * Include SZ-prefix devices where applicable. 3 Publication Order Number:
5.AT3G Series, SZ5.AT3G Series RATING AND TYPICAL CHARACTERISTIC CURVES, PEAK POWER (kw) P pk NONREPETITIVE PULSE WAVEFORM SHOWN IN FIGURE 2. T A = 25 C Ippm, PEAK PULSE CURRENT (%) 2 8 6 4 2 t d s PEAK VALUE I ppm T A = 25 C PW (I D ) IS DEFINED AS THE POINT WHERE THE PEAK CURRENT DECAYS TO 5% OF I pp. HALF VALUE - I pp /2 / s WAVEFORM AS DEFINED BY R.E.A.. -4.. t P, PULSE WIDTH (ms). 2 3 4 t, TIME (ms) 5 Figure. Pulse Rating Curve Figure 2. Pulse Waveform PEAK PULSE DERATING IN % OF PEAK POWER OR CURRENT 2 8 6 4 2 x WAVEFORM AS DEFINED BY R.E.A. C, CAPACITANCE (pf),, 5.AT3G AT3G 64AT3G T J = 25 C F = MHz 36AT3G 4 8 2 6 T A, AMBIENT TEMPERATURE ( C) Figure 3. Pulse Derating Curve 2 BIAS VOLTAGE (VOLTS) Figure 4. Typical Junction Capacitance vs. Bias Voltage P D, MAXIMUM POWER DISSIPATION (WATTS) 6 5 4 3 2 @ T A = 25 C P D =.5 W @ T L = 75 C P D =.5 W 25 5 75 25 5 T, TEMPERATURE ( C) Figure 5. Steady State Power Derating 4 Publication Order Number:
5.AT3G Series, SZ5.AT3G Series PACKAGE DIMENSIONS CASE 43D ISSUE H H E E NOTES:. DIMENSIONING AND TOLERANCING PER ANSI Y4.5M, 982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION b SHALL BE MEASURED WITHIN DIMENSION L. b D POLARITY INDICATOR OPTIONAL AS NEEDED (SEE STYLES) MILLIMETERS INCHES DIM MIN NOM MAX MIN NOM MAX A.97 2. 2.2.78.83.87 A.5..2.2.4.8 b.27.45.63.5.57.64 c.5.28.4.6..6 D 2.29 2.6 2.92.9.3.5 E 4.6 4.32 4.57.6.7.8 H E 4.83 5.2 5.59.9.25.22 L.76.4.52.3.45.6 STYLE : PIN. CATHODE (POLARITY BAND) 2. ANODE A L c A SOLDERING FOOTPRINT 4..57 2..79 2..79 SCALE 8: mm inches Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. Littelfuse.com 5 Publication Order Number: