Tvs Diode Array Spa Diodes Page 23 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 - SP721 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. 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 SP721 ESD capability is typically greater than 15kV from 100pF through 1.5k .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. 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). For ESD testing of the SP721 to EIAJ IC121 Machine Model (MM) standard, the results are typically better than 1kV from 200pF with no series resistance. Standard Type/Mode R D C D V D MIL STD 3015.7 Modified HBM 1.5k 100pF 15kV Standard HBM 1.5k 100pF 6kV IEC 61000-4-2 HBM, Air Discharge 330 150pF 15kV HBM, Direct Discharge 330 150pF 4kV HBM, Direct Discharge, Two Parallel Input Pins 330 150pF 8kV EIAJ IC121 Machine Model 0k 200pF 1kV 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 100 80 60 40 20 0 T A = 25C SINGLE PULSE 600 800 1000 1200 FORWARD SCR VOLTAGE DROP (mV) FORWARD SCR CURRENT (mA) 2.5 2 1.5 1 0.5 0 V FWD I FWD EQUIV. SAT. ON THRESHOLD ~ 1.1V 0 1 2 3 FORWARD SCR CURRENT (A) FORWARD SCT VOLTAGE DROP (V) T A = 25C SINGLE PULSE 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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