Tvs Diode Array Spa Diodes Page 21 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 Description Features ESD Interface Capability for HBM Standards - MIL STD 3015.7 .................................................15kV - IEC 61000-4-2, Direct Discharge, - Single Input .......................................... 4kV (Level 2) - Two Inputs in Parallel ............................ 8kV (Level 4) - IEC 61000-4-2, Air Discharge ...............15kV (Level 4) High Peak Current Capability - IEC 61000-4-5 (8/20s) .......................................3A - Single Pulse, 100s Pulse Width ........................2A - Single Pulse, 4s Pulse Width ............................5A Designed to Provide Over-Voltage Protection - Single-Ended Voltage Range to ........................ +30V - Differential Voltage Range to ............................ 15V Fast Switching .............................................2ns Rise Time Low Input Leakages ............................1nA at 25C Typical Low Input Capacitance.....................................3pF Typical An Array of 6 SCR/Diode Pairs Operating Temperature Range....................-40C to 105C Applications The SP721 is an array of SCR/Diode bipolar structures for ESD and over-voltage protection to sensitive input circuits. The SP721 has 2 protection SCR/Diode device structures per input. There are a total of 6 available inputs that can be used to protect up to 6 external signal or bus lines. Over- voltage protection is from the IN (Pins 1 - 3 and Pins 5 - 7) to V+ or V-. The SCR structures are designed for fast triggering at a threshold of one +V BE diode threshold above V+ (Pin 8) or a -V BE diode threshold below V- (Pin 4). 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 V BE above V+. A similar clamp to V- is activated if a negative pulse, one V BE less than V-, is applied to an IN input. Standard ESD Human Body Model (HBM) Capability is: Microprocessor/Logic Input Protection Data Bus Protection Analog Device Input Protection Voltage Clamp Pinout Functional Block Diagram 4 V+ V- IN 3, 5-7 IN 1 8 2 SP721 (PDIP, SOIC) TOP VIEW IN V- 1 2 3 4 8 7 6 5 V+ IN RoHS Pb GREEN SP721 Series 3pF 4kV Diode Array Additional Information Datasheet Resources Samples

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