P4SMA-E Series RoHS Pb e3 Description The P4SMA-E series is designed specifically to protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events. Features Ratings and Thermal Characteristics (T A =25 O C unless otherwise noted Parameter Symbol Value Unit Peak Pulse Power Dissipation at T A =25ºC by 1/µs Waveform (Fig.2(Note 1, (Note 2 Power Dissipation on Infinite Heat Sink at T L =5 O C Peak Forward Surge Current, 8.3ms Single Half Sine Wave (Note 3 Instantaneous Forward Voltage at 25A for Unidirectional Only 4 W P D 3.3 W I FSM 6 A V F 3.5 V Operating Temperature Range T J -65 to 15 C Storage Temperature Range T STG -65 to 175 C Typical Thermal Resistance Junction to Lead Typical Thermal Resistance Junction to Ambient R θjl 3 C/W R θja 12 C/W Notes: 1. Non-repetitive current pulse, per Fig.4 and derated above T J (initial =25ºC per Fig. 3. 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. Excellent clamping capability For surface mounted applications to optimize board space Low profile package Typical failure mode is short from over-specified voltage or current Whisker test is conducted based on JEDEC JESD21A per its table 4a and 4c IEC-6-4-2 ESD 3kV(Air, 3kV (Contact ESD protection of data lines in accordance with IEC 6-4-2 EFT protection of data lines in accordance with IEC 6-4-4 Built-in strain relief 4W peak pulse power capability at 1/µs waveform, repetition rate (duty cycles:.1% Low incremental surge resistance Fast response time: typically less than 1.ps from V to BV min High temperature to reflow soldering guaranteed: 26 C/4sec @ T J = @25 C x (1+αT x (T J - 25 (αt:temperature Coefficient, typical value is.1% EPI silicon technology Meet MSL level1, per J-STD-2C, LF maximun peak of 26 C Matte tin lead free Plated Halogen-free and RoHS compliant Pb-free E3 means 2nd level interconnect is Pb-free and the terminal finish material is tin(sn (IPC/JEDEC J-STD- 69A.1 Functional Diagram Bi-directional Applications Cathode Anode 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.
Electrical Characteristics (T A =25 C unless otherwise noted Part Number (Uni Marking I-V Curve Characteristics Reverse Stand off Voltage V R (Volts Breakdown Voltage (Volts @ I T 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 P4SMA35A-E 35S 3 332. 368. 1 482..9 1 P4SMA4A-E 4S 342 38. 42. 1 548..75 1 P4SMA44A-E 44S 376 418. 462. 1 62..68 1 P4SMA48A-E* 48S 48 456. 54. 1 658..61 1 P4SMA51A-E* 51S 434 485. 535. 1 698..57 1 P4SMA53A-E* 53S 451 53.5 556.5 1 725..55 1 P4SMA54A-E* 54S 46 513. 567. 1 74..54 1 P4SMA55A-E* 55S 468 522.5 577.5 1 76..53 1 P4SMA6A-E* 6S 51 57. 63. 1 822..49 1 P4SMA65A-E* 65S 553 617.5 682.5 1 891..45 1 P4SMA7A-E* 7S 595 665. 735. 1 959..42 1 P4SMA8A-E* 8S 68 76. 84. 1 196..37 1 P4SMA9A-E* 9S 765 855. 945. 1 1233..33 1 P4SMAA-E* S 85 95. 15. 1 1365..3 1 Note: for parts with * are still under development Vc VBR VR IR IT VF V Ipp Peak Pulse Power Dissipation -- Max power dissipation V R Stand-off Voltage -- voltage that can be applied to the TVS without operation Breakdown Voltage -- voltage that flows though the TVS at a specified test current (I T V C Clamping Voltage -- Peak voltage measured across the TVS at a specified Ippm (peak impulse current I R V F Reverse Leakage Current -- Current measured at V R Forward Voltage Drop for
Ratings and Characteristic Curves (T A =25 C unless otherwise noted Figure 1 - TVS Transients Clamping Waveform Figure 2 - Peak Pulse Power Rating Curve Voltage Transients Voltage or Current Voltage Across TVS Current Through TVS -Peak Pulse Power (kw TJ initial = Tamb 1 1.1.1.1.1 1 1 t d -Pulse Width (ms Time Figure 3 - Peak Pulse Power Derating Curve Figure 4 - Pulse Waveform Peak Pulse Power (P PP or Current (I PP Derating in Percentage % 8 6 4 2 25 5 75 125 15 175 T J - Initial Junction Temperature (ºC I PPM - Peak Pulse Current, % I RSM 15 5 td tr=1µsec 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 1/µsec. Waveform as defined by R.E.A 1. 2. 3. 4. t-time (ms Figure 5 - Typical Junction Capacitance Figure 6 - Typical Transient Thermal Impedance. Cj (pf. 1. 1. - Reverse Breakdown Voltage (V Transient Thermal Impedance ( C/W 1 1.1.1.1.1 1 1 T -Pulse Duration (s P
Temperature (T TVS Diodes Figure 7 - Non-Repetitive Forward Surge Current Uni-Directional Only 7 Figure 8 - Peak Forward Voltage Drop vs Peak Forward Current (Typical Values. IFSM - Peak Forward Surve Current (A 6 5 4 3 2 1 IF-Peak Forward Current (A 1. 1. 1 1 Number of Cycles at 6 Hz.1. 1. 2. 3. 4. 5. 6. 7. 8. 9. VF-Peak Forward Voltage(V Soldering Parameters Reflow Condition Lead free assembly t p Pre Heat - Temperature Min (T s(min 15 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 6 18 secs T s(max Average ramp up rate (Liquidus Temp (T A to peak T S(max to T A - Ramp-up Rate 3 C/second max 3 C/second max T s(min t s Preheat Ramp-down Reflow - Temperature (T A (Liquidus 217 C - Time (min to max (t s 6 15 seconds 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 2 4 seconds Ramp-down Rate Time 25 C to peak Temperature (T P 6 C/second max 8 minutes Max. Environmental Specifications Do not exceed 26 C High Temp. Storage JESD22-A13 Physical Specifications HTRB JESD22-A18 Weight Case.2 ounce,.61 gram JEDEC DO-214AC. Molded plastic body over glass passivated junction Temperature Cycling JESD22-A14 MSL JEDEC-J-STD-2, Level 1 Polarity Color band denotes positive end (cathode except bidirectional H3TRB JESD22-A11 Terminal Matte Tin-plated leads, Solderable per JESD22-B12 RSH JESD22-A111
Dimensions DO-214AC (SMA Cathode Band (for products only Dimensions Inches Millimeters Min Max Min Max A C A.49.65 1.25 1.65 B.157.181 3.99 4.6 C.95.11 2.4 2.79 D B H D.75.9 1.9 2.29 E.3.6.78 1.52 F -.8 -.23 G.189.28 4.8 5.28 E J F G K L H.6.12.152.35 I.7-1.8 - J.82-2. - K -.9-2.3 I L.82-2. - Solder Pads (all dimensions in mm Part Numbering System Part Marking System P4SMA XXX A-E EPI SILICON TECHNOLOGY 5% VOLTAGE TOLERANCE F Cathode Band (for products only Littelfuse Logo SERIES VOLTAGE XX YMXXX Marking Code Trace Code Marking Y:Year Code M: Month Code XXX: Lot Code Part number Component Package Quantity Option Specification P4SMAxxxA-E DO-214AC 5 Tape & Reel - 12mm tape/13 reel EIA STD RS-481 Tape and Reel Specification.47 (12..157 (4. Cathode.157 (4..59 DIA (1.5 Cover tape.8 (2.2 Arbor Hole Dia. 13. (33 Dimensions are in inches (and millimeters..49 (12.5 Direction of Feed