Amazing Microelectronic Features ESD Surge Protection for Handheld Battery Power Rail

 February 5th, 2024 |   By Area51 Electronics  |   0 Comments

Every time we turn the power of an electronic product on, there is often a power spike on the battery power rail. Or, when replacing a battery, the product’s battery power rail is exposed to the risk of electrostatic interference. This type of electrostatic discharge (ESD) happens in everyday life, but it becomes a concern when the discharge of static electricity damages or destroys sensitive electronic components – particularly microelectronics and integrated circuits.

With this in mind, Amazing Microelectronic – a leading supplier of ESD protection solutions and specific analog IC, including transceivers and EMI filters – offers ESD/surge protection solutions designed specifically for handheld battery power rail. One of their featured ESD protection solutions is called the AZ5A16-01M series. 

What is an ESD Protection Device?

ESD protection devices are designed to safeguard sensitive electronic circuits and devices from damage caused by electrostatic discharge. They are integrated into electronic systems to divert, absorb, or limit the energy from electrostatic discharges, to prevent it from reaching and harming the sensitive components. 

Amazing Microelectronic’s AZ5A16-01M model is super tiny, but extremely powerful. 

AZ5A16-01M adopts the small-package MCSP0603P2Y design for more flexible PCB space arrangement for small handheld devices, and is equipped with the highest surge robustness in the industry at 20A (8/20µs) in order to ensure the product’s battery power rail passes the IEC 61000-4-5 surge test. This helps engineers meet the needs of both small package and extreme surge robustness, thus eliminating the trade-off between small PCB space and high surge robustness. 

The AZ5A16-01M model not only provides good voltage redundancy at 4.5V and 5V for battery power rail, but also features low reverse negative leakage current for longer battery life in products. No trade off is made in terms of clamping voltage despite the higher VRWM. Compared with 0201 unidirectional 5V – 6V TVS products, AZ5A16-01M features the lowest clamping voltage for the greatest protection available. Its unidirectional feature ensures optimized negative protection. 


  • ESD protection for one line with uni-directional
  • Provide transient protection for each line to:
    • IEC 61000-4-2 (ESD)±30kV (air/contact)
    • IEC 61000-4-4 (EFT)±80A (5/50ns)
    • IEC 61000-4-5 (Lightning)20A (8/20s)
  • Tiny package size (0201 small MCSP package)
  • Fast turn-on and low clamping voltage


  • Suitable for 6V and below operating voltage application
  • Medical applications powered by battery
  • Power supply protection
  • OLED/small panel modules
  • Consumer electronics
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