Passives

Diode saves PCB space for smartphone & tablet ESD protection

22nd January 2015
Barney Scott
0

 

Providing a reverse avalanche breakdown voltage above 15.5V alongside a low forward voltage, Vishay has released a Bidirectional And symmetrical (BiAs) single-line ESD protection diode for portable electronics in the ultra-compact LLP1006-2L package.

With a small 1.0x0.6mm footprint and an extremely low profile of under 0.4mm, the Vishay VESD15A1-HD1-G4-08 is designed to reduce the board space required for ESD protection in smartphones, tablets, gaming systems, and MP3 players. For these devices, the diode offers a high isolation to ground characterised by a low leakage current of less than 0.01µA and low load capacitance of 45pF at 0V.

Any transient voltage signal exceeding the reverse breakdown voltage of 15.5V minimum will be clamped and shorted to ground. Negative transient voltage signals drive the diode in the forward direction and are also clamped close below the ground level. The device features maximum reverse and forward clamping voltages of 20 and 1.3V, respectively, at 1A.

The VESD15A1-HD1-G4-08 provides transient protection for one data line as per IEC 61000 4 2 at ±30 kV (air and contact discharge) and high surge current protection according to IEC 61000-4-5 of over 6A. The device offers a moisture sensitivity level of 1 in accordance to J-STD-020, a UL 94 V-0 flammability rating, and NiPdAu (e4) pin plating to prevent whisker growth. The protection diode is RoHS-compliant, halogen-free, and Vishay Green. Soldering can be checked by standard vision inspection, with no X-ray necessary. 

Samples of the VESD15A1-HD1-G4-08 are available, and mass production is supported with lead times of eight weeks for large orders.

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