Key Specifications

The UM5055 ESD protection diode is designed to replace multilayer varistors (MLVs) in portable applications such as cell phones, notebook computers, and PDA’s. It features large cross-sectional area junctions for conducting high transient currents, offers desirable electrical characteristics for board level protection, such as fast response time, lower operating voltage, lower clamping voltage and no device degradation when compared to MLVs. 

The UM5055 ESD protection diode protects sensitive semiconductor components from damage or upset due to electrostatic discharge (ESD) and other voltage induced transient events. The UM5055 is available in SOD523 package and with working voltages of 5 volt. 

It gives designer the flexibility to protect one unidirectional line in applications where arrays are not practical. Additionally, it may be “sprinkled” around the board in applications where board space is at a premium. It may be used to meet the ESD immunity requirements of IEC 61000-4-2, Level 4 (±15kV air, ±8kV contact discharge).

 

 

- Transient Protection for Data & Power Lines to

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

- Small Package for Use in Portable Electronics

- Suitable Replacement for MLV’s in ESD Protection Applications

- Protect One I/O or Power Line

- Low Clamping Voltage

- Stand-Off Voltage: 5V

- Low Leakage Current

- Solid-State Silicon-Avalanche Technology

 

 

- Cell Phone Handsets and Accessories

- Microprocessor Based Equipment

- Personal Digital Assistants (PDA’s)

- Notebooks, Desktops and Servers

- Portable Instrumentation

- Cordless Phones

- Digital Cameras

- Peripherals

- MP3 Players

 

 

(T=25°C, Device for 5.0V Reverse Stand-Off Voltage)
 

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Reverse Stand-Off Voltage	VRWM				5	V
Reverse Breakdown Voltage	VBR	IT=1mA	6	6.8	7.8	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
Forward Voltage	VF	IF=10mA		0.8		V
Junction Capacitance	CJ	VR=0V, f=1MHz		40	55	pF
Junction Capacitance	CJ	VR=2.5V, f=1MHz		30	40	pF

 

Part Number	Working Voltage	Packaging Type	Channel	Marking Code	Shipping Qty
UM5055	5.0V	SOD523	1	ZF	3000pcs/7Inch Tape & Reel