Tvs Diode Array Spa Diodes Page 35 TVS Diode Array SPA Diodes Catalog

2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 02/23/17 TVS Diode Arrays (SPA Diodes) General Purpose ESD Protection - SP724 Series ESD Capability ESD rating is dependent on the defined test standard. The 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 1.5k . By strict definition of the standard MIL-STD-3015.7 method using "pin-to-pin" device testing, the ESD voltage capability is greater than 2kV. For the SP724 EIAJ IC121 Machine Model (MM) standard, the ESD capability is typically greater than 1.8kV with 200pF discharged through 0k . The Charged Device model is based upon the self- capacitance of the SOT-23 package through 0k . Standard Type/Mode R D C D V D IEC 61000-4-2 (Level 4) HBM, Air Discharge 330 150pF 15kV HBM, Direct Discharge 330 150pF 8kV MIL-STD-3015.7 Modified HBM 1.5k 100pF 8kV Standard HBM 1.5k 100pF 2kV EIAJ IC121 Machine Model 0k 200pF 400V US ESD DS 5.3 Charged Device Model 0k NA 3kV H.V. SUPPLY V D IN DUT C D R 1 IEC 1000-4-2: R 1 50 to 100M R D CHARGE SWITCH DISCHARGE SWITCH MIL STD 3015.7: R 1 1 to 10M Upper limit of laboratory test set. 600 800 1000 1200 200 160 120 80 40 0 SINGLE PULSE T A = 25C FORWARD SCR VOLTAGE DROP (mV) FORWARD SCR CURRENT (mA) 5 4 3 2 1 0 T A = 25C SINGLE PULSE EQUIV. SAT. ON THRESHOLD ~ 1.1V FORWARD SCR VOLTAGE DROP (V) 0 1 2 3 FORWARD SCR CURRENT (A) Figure 1: Electrostatic Discharge Test Table 1: ESD Test Conditions Figure 3: High Current SCR Forward Voltage Drop Curve Figure 2: Low Current SCR Forward Voltage Drop Curve

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