Key Specifications

 

The UM8401 is a low pass filter array with integrated TVS diodes. It is designed to suppress unwanted EMI/RFI signals and provide electrostatic discharge (ESD) protection in portable electronic equipment. This state-of-the-art device utilizes silicon-avalanche technology for superior clamping performance and DC electrical characteristics. It has been optimized for protection of color LCD panels in cellular phones and other portable electronics.

The device consists of eight identical circuits comprised of TVS diodes for ESD protection, and a RC network for EMI filtering. A series resistor value of 100Ω and a capacitance value of 10pF are used to achieve 25dB minimum attenuation from 800 MHz to 2.5GHz. The TVS diodes provide effective suppression of ESD voltages in excess of ±15kV (air discharge) and ±8kV (contact discharge) per IEC 61000-4-2, level 4.

The UM8401 is in a 16-pin, RoHS compliant DFN16 package. It measures 4.0mm x 1.6mm. The leads are spaced at a pitch of 0.5mm and are finished with lead-free Ni Pd. The small package makes it ideal for use in portable electronics such as cell phones, digital still cameras, and PDAs.

 

- EMI/RFI Filter with Integrated TVS for ESD Protection

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

- 25dB Minimum Attenuation: 800MHz to 2.5GHz

- Working Voltage: 5V

- Resistor: 100Ω±15%

- Typical Capacitance: 15pF (V_R=2.5V)

- Solid-State Technology

- DFN16 Package: 4.0mm×1.6 mm

- Moisture Sensitivity Level 1

 
Applications

 

- EMI Filtering and ESD Protection for Data Lines
- Wireless Phones

- Handheld Products

- Notebook Computers

- LCD Displays

 

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Reverse Stand-Off Voltage	VRWM				5.0	V
Reverse Breakdown Voltage	VBR	IT=1mA	6.0	7.0	8.0	V
Reverse Leakage Current	IR	VRWM=3.3V			100	nA
Total Series Resistance	RA	IR=20mA, Each Line	85	100	115	Ω
Total Capacitance	Cd	Input to GND, Each Line VR=0V, f=1MHz	20	23	26	pF
Total Capacitance	Cd	Input to GND, Each Line VR=2.5V, f=1MHz	13	15	18	pF
Cut-Off Frequency (Note 1)	f3dB	Above this frequency, appreciable attenuation occurs		150		MHz

Note 1: 50Ω source and 50Ω load termination.

Part Number	Working Voltage	Packaging Type	Channel	Marking Code	Shipping Qty
UM8401	5.0V	DFN16  4.0×1.6	8	8401	3000pcs /7Inch Tape & Reel