Surface Mount 4W > SMAJ series RoHS Agency Approvals AGENCY AGENCY FILE NUMBER E2353 Ratings and Thermal Characteristics ( =25 O C unless otherwise noted Parameter Symbol Value Unit Peak Pulse Power Dissipation at =25ºC by xμs waveform P PPM 4 W (Fig.(Note, (Note 2 Power Dissipation on infinite heat sink at =5 O C P M(AV 3.3 W Peak Forward Surge Current, 8.3ms Single Half Sine Wave (Note 3 I FSM 4 A Instantaneous Forward Voltage at 25A for Unidirectional V F 3.5V/6.5 V only (Note 4 Operating Junction and Storage Temperature Range T J, T STG -65 to 5 C Typical Thermal Resistance Junction to Lead R ujl 3 C/W Typical Thermal Resistance Junction to Ambient R uja 2 C/W Description The SMAJ series is designed specifically to protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events. Features applications to optimize board space capability capability at x μs waveform, repetition rate (duty cycle:.% Applications typically less than.ps from Volts to V BR min R less than μa above 2V soldering: 26 C/4 seconds at terminals temperature coefficient ΔV BR =.% x V BR @25 C x ΔT Underwriters Laboratory Flammability 94V-O Plated TVS devices are ideal for the protection of I/O Interfaces, V CC bus and other vulnerable circuits used in Telecom, Computer, Industrial and Consumer electronic applications. Notes:. Non-repetitive current pulse, per Fig.3 and derated above =25ºC per Fig. 2. 2. Mounted on 5.x5.mm copper pad to each terminal. 3. Measured on 8.3ms single half sine wave or equivalent square wave for unidirectional device only. 4. V F < 3.5V for V BR _< 2V and V F < 6.5V for V BR _> 2V. 7 Revision: January 9, 29
Surface Mount 4W > SMAJ series Electrical Characteristics Part Number (Uni Part Number (Bi Marking Reverse Stand off Voltage V R (Volts Breakdown Voltage V BR (Volts @ I T UNI BI MIN MAX Test Current I T (ma Clamping Voltage V C @ I pp (V Peak Pulse Current I pp (A Reverse Leakage I R @ V R (μa SMAJ5.A SMAJ5.CA AE WE 5. 6.4 7. 9.2 43.5 8 X SMAJ6.A SMAJ6.CA AG WG 6. 6.67 7.37.3 38.8 8 X SMAJ6.5A SMAJ6.5CA AK WK 6.5 7.22 7.98.2 35.7 5 X SMAJ7.A SMAJ7.CA AM WM 7. 7.78 8.6 2. 33.3 2 X SMAJ7.5A SMAJ7.5CA AP WP 7.5 8.33 9.2 2.9 3. X SMAJ8.A SMAJ8.CA AR WR 8. 8.89 9.83 3.6 29.4 5 X SMAJ8.5A SMAJ8.5CA AT WT 8.5 9.44.4 4.4 27.8 2 X SMAJ9.A SMAJ9.CA AV WV 9... 5.4 26. X SMAJA SMAJCA AX WX.. 2.3 7. 23.5 5 X SMAJA SMAJCA AZ WZ. 2.2 3.5 8.2 22. X SMAJ2A SMAJ2CA BE XE 2. 3.3 4.7 9.9 2. X SMAJ3A SMAJ3CA BG XG 3. 4.4 5.9 2.5 8.6 X SMAJ4A SMAJ4CA BK XK 4. 5.6 7.2 23.2 7.2 X SMAJ5A SMAJ5CA BM XM 5. 6.7 8.5 24.4 6.4 X SMAJ6A SMAJ6CA BP XP 6. 7.8 9.7 26. 5.4 X SMAJ7A SMAJ7CA BR XR 7. 8.9 2.9 27.6 4.5 X SMAJ8A SMAJ8CA BT XT 8. 2. 22. 29.2 3.7 X SMAJ2A SMAJ2CA BV XV 2. 22.2 24.5 32.4 2.3 X SMAJ22A SMAJ22CA BX XX 22. 24.4 26.9 35.5.3 X SMAJ24A SMAJ24CA BZ XZ 24. 26.7 29.5 38.9.3 X SMAJ26A SMAJ26CA CE YE 26. 28.9 3.9 42. 9.5 X SMAJ28A SMAJ28CA CG YG 28. 3. 34.4 45.4 8.8 X SMAJ3A SMAJ3CA CK YK 3. 33.3 36.8 48.4 8.3 X SMAJ33A SMAJ33CA CM YM 33. 36.7 4.6 53.3 7.5 X SMAJ36A SMAJ36CA CP YP 36. 4. 44.2 58. 6.9 X SMAJ4A SMAJ4CA CR YR 4. 44.4 49. 64.5 6.2 X SMAJ43A SMAJ43CA CT YT 43. 47.8 52.8 69.4 5.8 X SMAJ45A SMAJ45CA CV YV 45. 5. 55.3 72.7 5.5 X SMAJ48A SMAJ48CA CX YX 48. 53.3 58.9 77.4 5.2 X SMAJ5A SMAJ5CA CZ YZ 5. 56.7 62.7 82.4 4.9 X SMAJ54A SMAJ54CA RE ZE 54. 6. 66.3 87. 4.6 X SMAJ58A SMAJ58CA RG ZG 58. 64.4 7.2 93.6 4.3 X SMAJ6A SMAJ6CA RK ZK 6. 66.7 73.7 96.8 4. X SMAJ64A SMAJ64CA RM ZM 64. 7. 78.6 3. 3.9 X SMAJ7A SMAJ7CA RP ZP 7. 77.8 86. 3. 3.5 X SMAJ75A SMAJ75CA RR ZR 75. 83.3 92. 2. 3.3 X SMAJ78A SMAJ78CA RT ZT 78. 86.7 95.8 26. 3.2 X SMAJ85A SMAJ85CA RV ZV 85. 94.4 4. 37. 2.9 X SMAJ9A SMAJ9CA RX ZX 9... 46. 2.7 X SMAJA SMAJCA RZ ZZ.. 23. 62. 2.5 X SMAJA SMAJCA SE VE. 22. 35. 77. 2.3 X SMAJ2A SMAJ2CA SG VG 2. 33. 47. 93. 2. X SMAJ3A SMAJ3CA SK VK 3. 44. 59. 29..9 X SMAJ5A SMAJ5CA SM VM 5. 67. 85. 243..6 X SMAJ6A SMAJ6CA SP VP 6. 78. 97. 259..5 X SMAJ7A SMAJ7CA SR VR 7. 89. 29. 275..5 X SMAJ8A SMAJ8CA ST VT 8. 2. 222. 292..4 SMAJ2A SMAJ2CA SV VV 2. 224. 247. 324..2 SMAJ22A SMAJ22CA SX VX 22. 246. 272. 356.. SMAJ25A SMAJ25CA SZ VZ 25. 279. 39. 45.. SMAJ3A SMAJ3CA TE UE 3. 335. 37. 486..8 SMAJ35A SMAJ35CA TG UG 35. 39. 432. 567..7 SMAJ4A SMAJ4CA TK UK 4. 447. 494. 648..6 SMAJ44A SMAJ44CA TM UM 44. 492. 543. 73..6 For bidirectional type having V RWM of volts and less, the I R limit is double. For parts without A (V BR is ± % and V C is 5% higher than with A parts. Agency Approval 8 Revision: January 9, 29
Surface Mount 4W > SMAJ series Ratings and Characteristic Curves ( =25 C unless otherwise noted Figure - Peak Pulse Power Rating Curve P PPM -Peak Pulse Power (kw.2x.2" (5.x5.mm Copper Pad Area..... t d -Pulse Width (sec. Figure 2 - Pulse Derating Curve Peak Pulse Power (P PP or Current (I PP Derating in Percentage % 8 6 4 2 25 5 75 25 5 75 -Ambient temperature (ºC Figure 3 - Pulse Waveform Figure 4 - Typical Junction Capacitance I PPM - Peak Pulse Current, % I RSM 5 5 td tr=μsec Peak Value IPPM Half Value IPPM 2 IPPM ( TJ=25 C Pulse Width(td is defined as the point where the peak current decays to 5% of IPPM /μsec. Waveform as defined by R.E.A. 2. 3. 4. t-time (ms Cj (pf Uni-directional @VR Bi-directional V=V Bi-directional @VR Uni-directional V=V Tj=25ºC f=.mhz Vsig=5mVp-p.... V BR - Reverse Breakdown Voltage (V Figure 5 - Steady State Power Dissipation Derating Curve Figure 6 - Non-Repetitive Forward Surge Current Uni-Directional Only P M(AV, Steady State Power Dissipation (W.2.8.6.4.2 25 5 75 25 5 75 - Ambient Temperature (ºC I FSM - Peak Forward Surve Current (A 45 4 35 3 25 2 5 5 Number of Cycles at 6 Hz 9 Revision: January 9, 29
Temperature (T Transient Voltage Suppression Diodes Surface Mount 4W > SMAJ series Soldering Parameters Reflow Condition t p Pre Heat - Temperature Min (T s(min 5 C - Temperature Max (T s(max 2 C T P T L Ramp-up t L Critical Zone T L to T P - Time (min to max (t s T s(max Average ramp up rate (Liquidus Temp (T L to peak T S(max to T L - Ramp-up Rate 3 C/second max 3 C/second max T s(min t s Preheat Ramp-down Reflow - Temperature (T L (Liquidus 27 C - Time (min to max (t s 25 C t 25 C to Peak Time (t Peak Temperature (T P 26 +/-5 C Time within 5 C of actual peak Temperature (t p Ramp-down Rate 6 C/second max Time 25 C to peak Temperature (T P 8 minutes Max. Do not exceed 28 C Physical Specifications Environmental Specifications Weight.2 ounce,.6 gram Temperature Cycle JESD22-A4 Case JEDEC DO-24AC Molded Plastic over glass passivated junction Pressure Cooker JESD22-A2 Polarity Color band denotes cathode except Bipolar High Temp. Storage JESD22-A3 Terminal Matte Tin-plated leads, Solderable per JESD22-B2D HTRB JESD22-A8 Thermal Shock JESD22-A6 Dimensions DO-24AC (SMA Cathode Band Dimensions Inches Millimeters Min Max Min Max A C A.49.65.25.65 B.57.77 3.99 4.5 B C.. 2.54 2.79 D.78.9.98 2.29 D E J F G K L H E.3.6.78.52 F -.8 -.23 G.94.28 4.93 5.28 H.6.2.52.35 I.7 -.8 - J.82-2. - K -.9-2.3 I L.82-2. - Revision: January 9, 29
Surface Mount 4W > SMAJ series Part Numbering System Part Marking System SMAJ XXX C A 5% VOLTAGE TOLERANCE BI-DIRECTIONAL VOLTAGE SERIES Cathode Band XXX F Littelfuse Logo Marking Code Part number Component Package Quantity Option Specification SMAJxxxXX DO-24AC 5 EIA RS-48 Revision: January 9, 29