Key Specifications

The UESD54B/55B/56B/64B of TVS diode array is designed to protect sensitive electronics from damage or latch-up due to ESD for use in applications where board space is at a premium. It is unidirectional device and may be used on lines where the signal polarities are above ground. The UESD54B/55B/64B will protect up to four lines and the UESD56B will protect up to five lines.

TVS diodes are solid-state devices feature large cross-sectional area junctions for conducting high transient currents, specifically for transient suppression. It offers desirable characteristics for board level protection including fast response time, low operating, low clamping voltage, and no device degradation.

The UESD54B/55B/56B/64B may be used to meet the immunity requirements of IEC 61000-4-2, level 4. The small package makes them ideal for use in portable electronics such as cell phones, PDA’s, notebook computers and digital cameras.

 

- Transient Protection for Data & Power Lines to

  IEC 61000-4-2 (ESD) ±15kV (Air), ±8kV (Contact)

- Working Voltage: 5V

- Low Leakage Current

- Low Clamping Voltage

- Solid-State Silicon Avalanche Technology

 

- Cellular Handsets & Accessories

- Cordless Phones

- Personal Digital Assistants (PDA’s)

- Notebooks & Handhelds

- Portable Instrumentation

- Digital Cameras

- Peripherals

- MP3 Players

 

 

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Reverse Stand-Off Voltage	VRWM				5	V
Reverse Breakdown Voltage	VBR	IT=1mA	6	6.8	7.2	V
Reverse Leakage Current	IR	VRWM=5V, T=25°C			0.1	μA
Clamping Voltage	VC	IPP=5A, tp=8/20μs			9.1	V
		IPP=11A, tp=8/20μs			13
Junction Capacitance	CJ	Between I/O Pins and GND VR=0V, f=1MHz		40	50	pF
Junction Capacitance	CJ	Between I/O Pins and GND VR=2.5V, f=1MHz		30	40	pF

  

Part Number	Working Voltage	Packaging Type	Channel	Marking Code	Shipping Qty
UESD55B	5.0V	SC89-6/SOT563/SOT666	4	UF5	3000pcs/7Inch Tape & Reel