Details, datasheet, quote on part number: LM238
CategoryPower Management => Regulators => Linear Regulators
DescriptionTVS Clamping Arrays
Quad bidirectional Transil array for ESD protection
CompanyST Microelectronics, Inc.
DatasheetDownload LM238 datasheet
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Features, Applications

2 bidirectional Transil functions ESD protection: IEC 61000-4-2 level 4 Stand off voltage: 12 V Min. Low leakage current Very small PCB area mm2 400 microns pitch

IEC 15 kV (air discharge) 8 kV (contact discharge) MIL STD 883E- Method 3015-7: class 25 kV (human body model)

Where transient overvoltage protection in ESD sensitive equipment is required, such as:

Computers Printers Communication systems and cellular phones Video equipment Figure 2. Configuration


The is a monolithic array designed to protect 2 lines against ESD transients. The device is ideal for applications where both reduced line capacitance and board space saving are required. This device is particularly adapted to the protection of symmetrical signals.

Peak pulse power (8/20µs) Junction temperature Storage temperature range Lead solder temperature (10 seconds duration) Operating temperature range

Parameter Breakdown voltage Leakage current @ VRM Stand-off voltage Clamping voltage Dynamic impedance Peak pulse current Voltage temperature coefficient Capacitance VBR @ IR IRM @ VRM max mA 1 max. 3 Rd

Relative variation of peak pulse power versus intial junction temperature
Peak pulse power versus exponential pulse duration
Clamping voltage versus peak pulse current (typical values, rectangular waveform)
Junction capacitance versus reverse applied voltage (typical values)


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