TVS Diode Arrays (SPA™ Family of Products) General Purpose ESD Protection - SP720 Series SP720 Series 3pF 4kV Rail Clamp Array RoHS Pb GREEN The SP720 is an array of SCR/Diode bipolar structures for ESD and over-voltage protection to sensitive input circuits. The SP720 has 2 protection SCR/Diode device structures per input. A total of 14 available inputs can be used to protect up to 14 external signal or bus lines. Over-voltage protection is from the IN (pins 1-7 and 9-15) to V+ or V-. The SCR structures are designed for fast triggering at a threshold of one +VBE diode threshold above V+ (Pin 16) or a -VBE diode threshold below V- (Pin 8). From an IN input, a clamp to V+ is activated if a transient pulse causes the input to be increased to a voltage level greater than one VBE above V+. A similar clamp to V- is activated if a negative pulse, one VBE less than V-, is applied to an IN input. Standard ESD Human Body Model (HBM) Capability is: Pinout SP720 (PDIP, SOIC) TOP VIEW IN 1 16 V+ IN 2 15 IN IN 3 14 IN IN 4 13 IN IN 5 12 IN - MIL STD 3015.7 ................................................. 15kV IN 6 11 IN - IEC 61000-4-2, Direct Discharge, IN 7 10 IN - Single Input .......................................... 4kV (Level 2) 9 IN - Two Inputs in Parallel ............................ 8kV (Level 4) V- 8 Features t &4%*OUFSGBDF$BQBCJMJUZGPS)#.4UBOEBSET - IEC 61000-4-2, Air Discharge ...............15kV (Level 4) t )JHI1FBL$VSSFOU$BQBCJMJUZ Functional Block Diagram - IEC 61000-4-5 (8/20μs) ....................................... ±3A - Single Pulse, 100μs Pulse Width ........................ ±2A V+ 16 - Single Pulse, 4μs Pulse Width ............................ ±5A t %FTJHOFEUP1SPWJEF0WFS7PMUBHF1SPUFDUJPO - Single-Ended Voltage Range to ........................ +30V IN IN 1 2 3-7 9 - 15 - Differential Voltage Range to ............................ ±15V t 'BTU4XJUDIJOH ..............................................2ns Risetime IN t -PX*OQVU-FBLBHFT .................................1nA at 25º (Typ) t -PX*OQVU$BQBDJUBODF....................................... 3pF (Typ) t "O"SSBZPG4$3%JPEF1BJST t 0QFSBUJOH5FNQFSBUVSF3BOHF....................-40ºC to 105ºC V- 8 Applications t .JDSPQSPDFTTPS-PHJD Input Protection t "OBMPH%FWJDF*OQVU Protection t %BUB#VT1SPUFDUJPO t 7PMUBHF$MBNQ Life Support Note: Not Intended for Use in Life Support or Life Saving Applications The products shown herein are not designed for use in life sustaining or life saving applications unless otherwise expressly indicated. ©2011 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/SPA for current information. 55 Revision: April 14, 2011 SP720 Lead-Free/Green Series Lead-Free/Green SP720 Description TVS Diode Arrays (SPA™ Family of Products) General Purpose ESD Protection - SP720 Series Thermal Information Absolute Maximum Ratings Parameter Rating Units +35 V ±2A, 100μs V Continuous Supply Voltage, (V+) - (V-) Forward Peak Current, IIN to VCC, IIN to GND (Refer to Figure 5) Parameter Thermal Resistance (Typical, Note 1) Rating TJA PDIP Package 90 o SOIC Package 130 o CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Maximum Storage Temperature Range Maximum Junction Temperature (Plastic Package) Note: Maximum Lead Temperature (Soldering 10s) (SOIC Lead Tips Only) ESD Ratings and Capability - See Figure 1, Table 1 Load Dump and Reverse Battery (Note 2) Units o C/W C/W C/W -65 to 150 o 150 o 260 o C C C 1. TJA is measured with the component mounted on an evaluation PC board in free air. Electrical Characteristics TA = -40oC to 105oC, VIN = 0.5VCC , Unless Otherwise Specified Parameter Symbol Operating Voltage Range, VSUPPLY = [(V+) - (V-)] Test Conditions VSUPPLY Forward Voltage Drop: Min Typ Max Units - 2 to 30 - V IIN = 1A (Peak Pulse) IN to V- VFWDL - 2 - V IN to V+ VFWDH - 2 - V IIN -20 5 20 nA IQUIESCENT - 50 200 nA Note 3 - 1.1 - V VFWD/IFWD; Note 3 - 1 - Ω Input Leakage Current Quiescent Supply Current Equivalent SCR ON Threshold Equivalent SCR ON Resistance Input Capacitance CIN - 3 - pF Input Switching Speed tON - 2 - ns Notes: 2. In automotive and battery operated systems, the power supply lines should be externally protected for load dump and everse battery V+ and V- pins are connected to the same supply voltage source as the device or control line under protection, a current limiting resistor should be connected in series between the external supply and the SP720 supply pins to limit reverse battery current to within the rated maximum limits. Bypass capacitors of typically 0.01μF or larger from the V+ and V- pins to ground are recommended. 3. Refer to the Figure 3 graph for definitions of equivalent “SCR ON Threshold” and “SCR ON Resistance.” These characteristics are given here for thumb-rule nformation to determine peak current and dissipation under EOS conditions. Typical Application of the SP720 (Application as an Input Clamp for Over-voltage, greater than 1VBE Above V+ or less than -1VBE below V-) +VCC +VCC INPUT DRIVERS OR SIGNAL SOURCES LINEAR OR DIGITAL IC INTERFACE IN 1-7 IN 9-15 TO +VCC V+ SP720 V- SP720 INPUT PROTECTION CIRCUIT (1 OF 14 ON CHIP) SP720 Lead-Free/Green Series 56 Revision: April 14, 2011 ©2011 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/SPA for current information. TVS Diode Arrays (SPA™ Family of Products) General Purpose ESD Protection - SP720 Series ESD Capability ESD capability is dependent on the application and defined test standard. The evaluation results for various test standards and methods based on Figure 1 are shown in Table 1. Figure 1: Electrostatic Discharge Test CHARGE SWITCH DISCHARGE SWITCH CD IN H.V. SUPPLY VD DUT IEC 1000-4-2: R 1 50 to 100M MIL STD 3015.7: R 1 1 to 10M The HBM capability to the IEC 61000-4-2 standard is greater than 15kV for air discharge (Level 4) and greater than 4kV for direct discharge (Level 2). Dual pin capability (2 adjacent pins in parallel) is well in excess of 8kV (Level 4). Table 1: ESD Test Conditions Standard Type/Mode MIL STD 3015.7 For ESD testing of the SP720 to EIAJ IC121 Machine Model (MM) standard, the results are typically better than 1kV from 200pF with no series resistance. IEC 61000-4-2 EIAJ IC121 RD CD ±VD Modified HBM 1.5kΩ 100pF 15kV Standard HBM 1.5kΩ 100pF 6kV HBM, Air Discharge 330Ω 150pF 15kV HBM, Direct Discharge 330Ω 150pF 4kV HBM, Direct Discharge, Two Parallel Input Pins 330Ω 150pF 8kV 0kΩ 200pF 1kV Machine Model Figure 3: High Current SCR Forward Voltage Drop Curve Figure 2: Low Current SCR Forward Voltage Drop Curve 100 2.5 TA = 25°C SINGLE PULSE FORWARD SCR CURRENT (A) 80 60 40 20 0 TA = 25°C SINGLE PULSE 2 1.5 1 I FWD EQUIV. SAT. ON THRESHOLD ~ 1.1V V FWD 0.5 0 600 800 1000 1200 0 FORWARD SCR VOLTAGE DROP (mV) ©2011 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/SPA for current information. 1 2 3 FORWARD SCR VOLTAGE DROP (V) 57 Revision: April 14, 2011 SP720 Lead-Free/Green Series Lead-Free/Green SP720 For the “Modified” MIL-STD-3015.7 condition that is defined as an “in-circuit” method of ESD testing, the V+ and V- pins have a return path to ground and the SP720 ESD capability is typically greater than 15kV from 100pF through 1.5kΩ. By strict definition of MIL-STD-3015.7 using “pin-to-pin” device testing, the ESD voltage capability is greater than 6kV. The MIL-STD-3015.7 results were determined from AT&T ESD Test Lab measurements. FORWARD SCR CURRENT (mA) RD R1 TVS Diode Arrays (SPA™ Family of Products) General Purpose ESD Protection - SP720 Series Peak Transient Current Capability for Long Duration Surges The peak transient current capability rises sharply as the width of the current pulse narrows. Destructive testing was done to fully evaluate the SP720’s ability to withstand a wide range of transient current pulses. The circuit used to generate current pulses is shown in Figure 4. Figure 4: Typical SP720 Peak Current Test Circuit with a Variable Pulse Width Input + VG - The test circuit of Figure 4 is shown with a positive pulse input. For a negative pulse input, the (-) current pulse input goes to an SP720 ‘IN’ input pin and the (+) current pulse input goes to the SP720 V- pin. The V+ to V- supply of the SP720 must be allowed to float. (i.e., It is not tied to the ground reference of the current pulse generator.) Figure 5 shows the point of overstress as defined by increased leakage in excess of the data sheet published limits. VARIABLE TIME DURATION CURRENT PULSE GENERA TOR R1 CURRENT SENSE (-) (+) VOLTAGE PROBE The maximum peak input current capability is dependent on the V+ to V- voltage supply level, improving as the supply voltage is reduced. Values of 0, 5, 15 and 30 voltages are shown. The safe operating range of the transient peak current should be limited to no more than 75% of the measured overstress level for any given pulse width as shown in Figure 5. R 1 ~ 10 TYPICAL VG ADJ. 10V/ATYPICAL C1 ~ 100 μF 1 IN V+ 16 2 IN IN 15 3 IN IN 14 4 IN IN 13 + C1 SP720 5 IN IN 12 6 IN IN 11 7 IN IN 10 8 V- IN 9 - Figure 5: SP720 Typical Nonrepetitive Peak Current Pulse Capability Showing the Measured Point of Overstress in Amperes vs pulse width time in milliseconds (TA = 25oC) When adjacent input pins are paralleled, the sustained peak current capability is increased to nearly twice that of a single pin. For comparison, tests were run using dual pin combinations 1+2, 3+4, 5+6, 7+9, 10+11, 12+13 and 14+15. 10 CAUTION: SAFE OPERATING CONDITIONS LIMIT THE MAXIMUM PEAK CURRENT FOR A GIVEN PULSE WIDTH TO BE NO GREATER THAN 75% OF THE VALUES SHOWN ON EACH CURVE. SINGLE PIN STRESS CURVES DUAL PIN STRESS CURVE 9 8 PEAK CURRENT (A) The overstress curve is shown in Figure 5 for a 15V supply condition. The dual pins are capable of 10A peak current for a 10μs pulse and 4A peak current for a 1ms pulse. The complete for single pulse peak current vs. pulse width time ranging up to 1 second are shown in Figure 5. 7 6 5 4 3 15V 0V 5V 30V 2 1 15V V+ TOV-SUPPLY 0 0.001 0.01 0.1 1 10 100 1000 PULSE WIDTH TIME (ms) SP720 Lead-Free/Green Series 58 Revision: April 14, 2011 ©2011 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/SPA for current information. TVS Diode Arrays (SPA™ Family of Products) General Purpose ESD Protection - SP720 Series Soldering Parameters Pb – Free assembly tP Pre Heat - Temperature Min (Ts(min)) 150°C - Temperature Max (Ts(max)) 200°C - Time (min to max) (ts) 60 – 180 secs Average ramp up rate (Liquidus) Temp (TL) to peak 5°C/second max TS(max) to TL - Ramp-up Rate 5°C/second max Reflow - Temperature (TL) (Liquidus) 217°C - Temperature (tL) 60 – 150 seconds Temperature TP Critical Zone TL to TP Ramp-up TL TS(max) tL Lead-Free/Green SP720 Reflow Condition Ramp-do Ramp-down Preheat TS(min) tS 25 Peak Temperature (TP) 250+0/-5 °C Time within 5°C of actual peak Temperature (tp) 20 – 40 seconds Ramp-down Rate 5°C/second max Time 25°C to peak Temperature (TP) 8 minutes Max. Do not exceed 260°C time to peak temperature Time Package Dimensions Dual-In-Line Plastic Packages (PDIP) N E1 INDEX AREA 1 2 3 N/2 Package PDIP Pins 16 Lead Dual-in-Line JEDEC E16.3 MS-001-BB Issue D -B- Millimeters -AD A2 -C- SEATING PLANE A - A1 0.39 A L D1 e B1 Max E BASE PLANE D1 eA A1 B CL eC 0.010 (0.25) M C A B S Max 5.33 - 0.210 4 - 0.015 - 4 2.93 4.95 0.115 0.195 - B 0.356 0.558 0.014 0.022 - B1 1.15 1.77 0.045 0.070 8, 10 C 0.204 0.355 0.008 0.014 - Notes: 1. Controlling Dimensions: INCH. in case of conflict between English and Metric dimensions, the inch dimensions control. Notes Min A2 C eB Inches Min D 18.66 19.68 0.735 0.775 5 D1 0.13 - 0.005 - 5 E 7.62 8.25 0.300 0.325 6 E1 6.10 7.11 0.240 0.280 5 2. Dimensioning and tolerancing per ANSI Y14.5M-1982. 3. Symbols are defined in the “MO Series Symbol List” in Section 2.2 of Publication No. 95. 4. Dimensions A, A1 and L are measured with the package seated in JE-DEC seating plane gauge GS-3. e 2.54 BSC 5. D, D1, and E1 dimensions do not include mold flash or protrusions. Mold flash or protrusions shall not exceed 0.010 inch (0.25mm). eA 6. E and eA are measured with the leads constrained to be perpendicular to datum -C- . eB - L 2.93 7. eB and eC are measured at the lead tips with the leads unconstrained. eC must be zero or greater. 8. B1 maximum dimensions do not include dambar protrusions. Dambar protrusions shall not exceed 0.010 inch (0.25mm). N 7.62 BSC 16 0.100 BSC - 0.300 BSC 6 10.92 - 0.430 7 3.81 0.115 0.150 4 16 9 9. N is the maximum number of terminal positions. 10. Corner leads (1, N, N/2 and N/2 + 1) for E8.3, E16.3, E18.3, E28.3, E42.6 will have a B1 dimension of 0.030 - 0.045 inch (0.76 - 1.14mm). ©2011 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/SPA for current information. 59 Revision: April 14, 2011 SP720 Lead-Free/Green Series TVS Diode Arrays (SPA™ Family of Products) General Purpose ESD Protection - SP720 Series Package Dimensions — Small Outline Plastic Packages (SOIC) N Package INDEX AREA H 0.25(0.010) M B M Pins 16 JEDEC M16.15 (JEDEC MS-012-AC Issue C) E -B- SOIC Millimeters 1 2 3 L SEATING PLANE -A- h x 45o A D -C- μ e A1 B C Inches Notes Min Max Min Max A A1 B C D E 1.35 0.10 0.33 0.19 9.80 3.80 1.75 0.25 0.51 0.25 10.00 4.00 0.0532 0.0040 0.013 0.0075 0.3859 0.1497 0.0688 0.0098 0.020 0.0098 0.3937 0.1574 9 3 4 e H h L N 1.27 BSC 5.80 6.20 0.25 0.50 0.40 1.27 16 0.050 BSC 0.2284 0.2440 0.0099 0.0196 0.016 0.050 16 5 6 7 0.10(0.004) 0.25(0.010) M C A M B S Notes: 1. Symbols are defined in the “MO Series Symbol List” in Section 2.2 of Publication Number 95. 2. Dimensioning and tolerancing per ANSI Y14.5M-1982. 3. Dimension “D” does not include mold flash, protrusions or gate burrs. Mold flash, protrusion and gate burrs shall not exceed 0.15mm (0.006 inch) per side. μ 0º 8º 0º 8º - 4. Dimension “E” does not include interlead flash or protrusions. Interlead flash and protrusions shall not exceed 0.25mm (0.010 inch) per side. 5. The chamfer on the body is optional. If it is not present, a visual index feature must be located within the crosshatched area. 6. “L” is the length of terminal for soldering to a substrate. 7. “N” is the number of terminal positions. 8. Terminal numbers are shown for reference only. 9. The lead width “B”, as measured 0.36mm (0.014 inch) or greater above the seating plane, shall not exceed a maximum value of 0.61mm (0.024 inch). 10. Controlling dimension:MILLIMETER. Converted inch dimensions are not necessarily exact. Part Numbering System Product Characteristics SP720ABTG P=Lead Free G = Green TG= Tape and Reel / Green Silicon Protection Array (SPATM) Family of TVS Diode Arrays Package Series AB = 16 Ld SOIC AP = 16 Ld PDIP See Ordering Information section for specific options available Lead Plating Matte Tin Lead Material Copper Alloy Lead Coplanarity 0.004 inches (0.102mm) Subsitute Material Silicon Body Material Molded Epoxy Flammability UL94-V-0 Ordering Information Part Number Temp. Range (ºC) Package Environmental Informaton Marking Min. Order SP720APP -40 to 105 16 Ld PDIP Lead-free 720APP 1500 SP720ABG -40 to 105 16 Ld SOIC Green 720ABG 1920 SP720ABTG -40 to 105 16 Ld SOIC Tape and Reel Green 720ABG 2500 SP720 Lead-Free/Green Series 60 Revision: April 14, 2011 ©2011 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/SPA for current information.