TVS Diode Arrays (SPA® Diodes) General Purpose ESD Protection - SP724 Series SP724 Series 3pF 8kV Diode Array RoHS Pb GREEN Description The SP724 is a quad array of transient voltage clamping circuits designed to suppress ESD and other transient over- voltage events. The SP724 is used to help protect sensitive digital or analog input circuits on data, signal, or control lines operating on power supplies up to 20VDC. The SP724 is comprised of bipolar SCR/diode structures to protect up to four independent lines by clamping transients of either polarity to the power supply rails. The SP724 offers very low leakage (1nA Typical) and low input capacitance (3pF Typical). Additionally, the SP724 is rated to withstand the IEC 61000-4-2 ESD specification for both contact and air discharge methods to level 4. Pinout The SP724 is connected to the sensitive input line and its associated power supply lines. Clamping action occurs I/O V+ I/O during the transient pulse, turning on the diode and fast 6 5 4 triggering SCR structures when the voltage on the input SP724 line exceeds one V threshold above the V+ supply (or one BE (SOT-23) V threshold below the V- supply). Therefore, the SP724P BE TOP VIEW operation is unaffected by poor power supply regulation or voltage fluctuations within its operating range. 1 2 3 I/O V– I/O Features • An Array of 4 SCR/Diode Pairs in 6-Lead SOT-23 Functional Block Diagram • ESD Capability per HBM Standards - IEC 61000-4-2, Direct Discharge ..........8kV (Level 4) - IEC 61000-4-2, Air Discharge ...............15kV (Level 4) - MIL STD 3015.7 ................................................>8kV • Input Protection for Applications with Power Supplies Up to +20V (Single-Ended Voltage), and ±10V (Differential Voltage) • Peak Current Capability - IEC 61000-4-5 (8/20µs) .......................................±3A - Single Pulse, 100µs Pulse Width .....................±2.2A • Low Input Leakage ..........................................1nA Typical Notes: • Low Input Capacitance .....................................3pF Typical 1. The design of the SP724 SCR/Diode ESD Protection Arrays are covered by Littelfuse • Operating Temperature Range....................-40ºC to 105ºC patent 4567500. 2. The full ESD capability of the SP724 is achieved when wired in a circuit that includes connection to both the V+ and V- pins. When handling individual devices, follow proper procedures for electrostatic discharge. Applications • Microprocessor/Logic • Analog Device Input Input Protection Protection • Data Bus Protection • Voltage Clamp Additional Information 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. Resources Samples © 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 05/12/17

TVS Diode Arrays (SPA® Diodes) General Purpose ESD Protection - SP724 Series Absolute Maximum Ratings Thermal Information Parameter Rating Units Parameter Rating Units Continuous Supply Voltage, (V+) - (V-) +20 V Thermal Resistance (Typical, Note 3) θJA oC/W Forward Peak Current, I to V , GND SOT Package 220 oC/W IN CC ±2.2, 100µs A (Refer to Figure 5) Maximum Storage Temperature Range -65 to 150 oC CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause Maximum Junction Temperature 150 oC permanent damage to the device. This is a stress only rating and operation of the device Maximum Lead Temperature at these or any other conditions above those indicated in the operational sections of this 260 oC specification is not implied. (Soldering 20-40s) (SOT - Lead Tips Only) Note: Note: 3. θ is measured with the component mounted on an evaluation PC board in free air. ESD Ratings and Capability - See Figure 1, Table 1 JA Electrical Characteristics T = -40oC to 105oC, V = 0.5V , Unless Otherwise Specified A IN CC Parameter Symbol Test Conditions Min Typ Max Units Operating Voltage Range, V 1 - 20 V V = [(V+) - (V-)] (Notes 4, 5) SUPPLY SUPPLY Forward Voltage Drop Forward Voltage Drop IN to V- V I = 1A (Peak Pulse) - 2 - V FWDL IN IN to V+ V - 2 - V FWDH Input Leakage Current I -10 1 10 nA IN Quiescent Supply Current I V+ = 20V, V- = GND - - 100 nA QUIESCENT Equivalent SCR ON Threshold (Note 6) - 1.1 - V Equivalent SCR ON Resistance V /I (Note 6) - 1.0 - Ω FWD FWD Input Capacitance C - 3 - pF IN Notes: 4. In automotive and other battery charging systems, the SP724 power supply lines should be externally protected for load dump and reverse battery. When the 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 SP724 supply pins to limit reverse battery current to within the rated maximum limits. 5. Bypass capacitors of typically 0.01µF or larger should be connected closely between the V+ and V- Pins for all applications. 6. Refer to the Figure 3 graph for definitions of equivalent “SCR ON Threshold” and “SCR ON Resistance”. These characteristics are given here for information to determine peak current and dissipation under EOS conditions. Typical Application of the SP724 Application as an Input Clamp for Over-voltage, Greater than 1V BE Above V+ or less than -1V below V-) BE © 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 05/12/17

TVS Diode Arrays (SPA® Diodes) General Purpose ESD Protection - SP724 Series ESD Capability ESD rating is dependent on the defined test standard. The Figure 1: Electrostatic Discharge Test evaluation results for various test standards and methods based on Figure 1 are shown in Table 1.3 The SP724 has a Level 4 rating when tested to the IEC 61000-4-2 Human Body Model (HBM) standard and connected in a circuit in which the V+ and V- pins have a return path to ground. Level 4 specifies a required capability greater than 8kV for direct discharge and greater than 15kV for air discharge. The “Modified” MIL-STD-3015.7 condition is defined as an “in-circuit” method of ESD testing, the V+ and V- pins have a return path to ground.The SP724 ESD capability is greater than 8kV with 100pF discharged through 1.5kΩ. By strict Table 1: ESD Test Conditions definition of the standard MIL-STD-3015.7 method using “pin-to-pin” device testing, the ESD voltage capability is Standard Type/Mode R C ±V greater than 2kV. D D D IEC 61000-4-2 HBM, Air Discharge 330 Ω 150pF 15kV For the SP724 EIAJ IC121 Machine Model (MM) standard, (Level 4) the ESD capability is typically greater than 1.8kV with HBM, Direct Discharge 330 Ω 150pF 8kV 200pF discharged through 0kΩ. Modified HBM 1.5k Ω 100pF 8kV † MIL-STD-3015.7 Standard HBM 1.5k Ω 100pF 2kV The Charged Device model is based upon the self- EIAJ IC121 Machine Model 0k Ω 200pF 400V capacitance of the SOT-23 package through 0kΩ. Charged Device US ESD DS 5.3 0k Ω NA 3kV Model †Upper limit of laboratory test set. Figure 2: Low Current SCR Forward Voltage Drop Curve Figure 3: High Current SCR Forward Voltage Drop Curve © 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 05/12/17

TVS Diode Arrays (SPA® Diodes) General Purpose ESD Protection - SP724 Series Peak Transient Current Capability for Long Duration Surges The peak transient current capability is inversely Figure 4: Typical SP724 Peak Current Test Circuit proportional to the width of the current pulse. Testing was with a Variable Pulse Width Input done to fully evaluate the SP724’s ability to withstand long duration current pulses using the circuit of Figure 4. Figure 5 shows the point of overstress as defined by increased leakage in excess of the data sheet published limits. 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 the curve of Figure 5. 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 SP724 ‘IN’ input pin and the (+) current pulse input goes to the SP724 V- pin. The V+ to V- supply of the SP724 must be allowed to float. (i.e., It is not tied to the ground reference of the current pulse generator.) Figure 5: SP724 Typical Nonrepetitive Peak Current Note that two input pins of the SP724 may be paralleled to Pulse Capability improve current (and ESD) capability. The sustained peak Showing the Measured Point of Overstress in Amperes vs current capability is increased to nearly twice that of a pulse width time in milliseconds single pin. 8 NOTE: TO ENSURE SAFE OPERATION LIMIT 7 THE MAXIMUM PEAK CURRENT FOR A GIVEN PULSE WIDTH TO BE NO GREATER THAN 75% 6 OF THE VALUES SHOWN. A) T = 25ºC T ( 5 VA+ TO V-SUPPLY = 15V N E RR 4 U C K 3 A E P 2 1 0 0.001 0.01 0.1 1 10 100 1000 SQUARE WAVE PULSE WIDTH (ms) © 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 05/12/17

TVS Diode Arrays (SPA® Diodes) General Purpose ESD Protection - SP724 Series Soldering Parameters Reflow Condition Pb – Free assembly - Temperature Min (T ) 150°C s(min) Pre Heat - Temperature Max (T ) 200°C s(max) - Time (min to max) (t) 60 – 180 secs s Average ramp up rate (Liquidus) Temp 5°C/second max (T) to peak L T to T - Ramp-up Rate 5°C/second max S(max) L - Temperature (T) (Liquidus) 217°C Reflow L - Temperature (t) 60 – 150 seconds L Peak Temperature (T ) 260+0/-5 °C P Time within 5°C of actual peak 20 – 40 seconds Temperature (t ) p Ramp-down Rate 5°C/second max Time 25°C to peak Temperature (T ) 8 minutes Max. P Do not exceed 260°C Package Dimensions — Small Outline Transistor Plastic Packages (SOT23-6) Package SOT23-6 Pins 6 JEDEC MO-178 Millimeters Inches Notes Min Max Min Max A 0.900 1.450 0.035 0.057 - A1 0.000 0.150 0.000 0.006 - A2 0.900 1.300 0.035 0.051 - b 0.350 0.500 0.0138 0.0196 - C 0.080 0.220 0.0031 0.009 - D 2.800 3.000 0.11 0.118 3 E 2.600 3.000 0.102 0.118 - E1 1.500 1.750 0.06 0.069 3 e 0.95 Ref 0.0374 ref - e1 1.9 Ref 0.0748 Ref - L 0.100 0.600 0.004 0.023 4,5 Recommended Solder Pad Layout N 6 6 6 a 0º 10º 0º 10º - M 2.590 0.102 - O 0.690 .027 TYP - P 0.990 .039 TYP - R 0.950 0.038 - Notes: M 1. Dimensioning and tolerances per ANSI 14.5M-1982. 2. Package conforms to EIAJ SC-74 (1992). 3. Dimensions D and E1 are exclusive of mold flash, protrusions, or gate burrs. 4. Footlenth L measured at reference to seating plane. P 5. “L” is the length of flat foot surface for soldering to substrate. 6. “N” is the number of terminal positions. 7. Controling dimension: MILLIMETER. Converted inch dimensions are not necessarily R exact. O © 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 05/12/17

TVS Diode Arrays (SPA® Diodes) General Purpose ESD Protection - SP724 Series Part Numbering System Product Characteristics SP 724AHT G Lead Plating Matte Tin TVS Diode Arrays “Green” Lead Material Copper Alloy (SPA® Diodes) RoHS Compliant Lead Coplanarity 0.004 inches (0.102mm) Tape and Reel Package Type Substitute Material Silicon Series AH: SOT-23 Body Material Molded Epoxy Flammability UL 94 V-0 Ordering Information Notes: 1. All dimensions are in millimeters. Part Number Temp. Package Marking Min. 2. Dimensions include solder plating. Range (ºC) Order 3. Dimensions are exclusive of mold flash & metal burr. Qty. 4. Blo is facing up for mold and facing down for trim/form, i.e. reverse trim/form. 5. Package surface matte finish VDI 11-13. SP724AHTG -40 to 105 Tape and Reel 724G 3000 Embossed Carrier Tape & Reel Specification — SOT23-6 8mm TAPE AND REEL ACCESS HOLE DIA1..5 HmOmLE 4.0mm 2.0mm 1.75mm 14.4mm 8mm CL 4.0mm 13mm SOT-23 (8mm POCKET PITCH) GENERAL INFORMATION 1. 3000 PIECES PER REEL. 2. ORDER IN MULTIPLES OF FULL REELS ONLY. 180mm 60mm 3. MEETS EIA-481 REVISION "A" SPECIFICATIONS. 8.4mm USER DIRECTION OF FEED PIN 1 Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics. COVER TAPE © 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 05/12/17