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LESDA25VLT1G Dataheets PDF



Part Number LESDA25VLT1G
Manufacturers Leshan Radio Company
Logo Leshan Radio Company
Description Dual transil array
Datasheet LESDA25VLT1G DatasheetLESDA25VLT1G Datasheet (PDF)

www.DataSheet4U.com LESHAN RADIO COMPANY, LTD. Dual transil array for ESD protection General Description The LESDA25VLT1G is a dual monolithic voltage suppressor designed to protect components which are connected to data and transmission lines against ESD. It clamps the voltage just above the logic level supply for positive transients, and to a diode drop below ground for negative transients. It can also work as bidirectionnal suppressor by connecting only pin1 and 2. LESDA25VLT1G 3 1 2 App.

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www.DataSheet4U.com LESHAN RADIO COMPANY, LTD. Dual transil array for ESD protection General Description The LESDA25VLT1G is a dual monolithic voltage suppressor designed to protect components which are connected to data and transmission lines against ESD. It clamps the voltage just above the logic level supply for positive transients, and to a diode drop below ground for negative transients. It can also work as bidirectionnal suppressor by connecting only pin1 and 2. LESDA25VLT1G 3 1 2 Applications z Computers z Printers z Communication systems It is particulary recommended for the RS232 I/O port protection where the line interface withstands only with 2kV ESD surges. SOT– 23 Features z z z z z 2 Unidirectional Transil functions Low leakage current: IR max< 20 μA at VBR 3 00W peak pulse power(8/20μs) High ESD protection level: up to 25 kV We declare that the material of product compliance with RoHS requirements. High ESD protection level up to 25 kV. High integration. Suitable for high density boards. IEC61000-4-2 Level 4 MIL STD 883c - Method 3015-6 Class 3 (Human Body Model) ORDERING INFORMATION Device LESDA25VLT1G Package SOT−23 Shipping 3000/Tape & Reel Benefits z z z Complies with the following standards Absolute Ratings (Tamb=25°C ) Symbol Parameter Value Units PPP TL Tstg Top Tj Peak Pulse Power (tp = 8/20μs) Maximum lead temperature for soldering during 10s Storage Temperature Range Operating Temperature Range Maximum junction temperature Electrostatic discharge MIL STD 883C -Method 3015-6 IEC61000-4-2 air discharge IEC61000-4-2 contact discharge 300 260 -55 to +150 -40 to +125 150 25 16 9 W °C °C °C °C VPP kv 1/7 www.DataSheet4U.com LESHAN RADIO COMPANY, LTD. LESDA25VLT1G Electrical Parameter Symbol VRM VBR VCL IRM IPP αT VF C Rd Parameter Stand-off voltage Breakdown voltage Clamping voltage Leakage current Peak pulse current Voltage temperature coefficient Forward voltage drop Capacitance Dynamic resistance Electrical Characteristics Part Numbers Min. v LESDA5V3LT1G LESDA6V1LT1G LESDA14V2LT1G LESDA25VLT1G VBR Max. v 5.9 7.2 15.8 30 IR mA 1 1 1 1 VRM v 3 5.25 12 24 IRM µA 2 20 5 1 VF Max. v 1.25 1.25 1.25 1.2 IF mA 200 200 200 10 Rd Typ.(1) mΩ 280 350 650 1000 αT Max.(2) 10-4/°C 5 6 10 10 C Typ. 0v bias pF 220 140 90 50 5.3 6.1 14.2 25 1.Square pulse IPP=15A,tp=2.5µs 2.△VBR=aT*(Tamb-25°C)*VBR(25°C) Typical Characteristics Fig1.Peak power dissipation versus Initial junction temperature Fig2. Peak pulse power versus exponential pulse duration(Tj initial=25°C) 2/7 www.DataSheet4U.com LESHAN RADIO COMPANY, LTD. LESDA25VLT1G Fig3. Clamping voltage versus peak pulse current(Tj initial=25°C, rectangular Waveform,tp=2.5μs) Fig4. Capacitance versus reverse Applied voltage Fig5.Relative variation of leakage current Versus junction temperature Application Note Fig6. Peak forward voltage drop versus peak forward current Electrostatic discharge (ESD) is a major cause of failure in electronic systems. Transient Voltage Suppressors (TVS) are an ideal choice for ESD protection. They are capable of clamping the incoming transient to a low enough level such that damage to the protected semiconductor is prevented. Surface mount TVS arrays offer the best choice for minimal lead inductance. They serve as parallel protection elements, connected between the signal line to ground. As the transient rises above the operating voltage of the device, the TVS array becomes a low impedance path diverting the transient current to ground. The LESDAxxxLT1G array is the ideal board evel prot ection of ESD sensitive semiconductor components. The tiny SOT23 package allows design flexibility in the design of high density boards where the space saving is at a premium. This enables to shorten the routing and contributes to hardening againt ESD. 3/7 www.DataSheet4U.com LESHAN RADIO COMPANY, LTD. LESDA25VLT1G 4/7 www.DataSheet4U.com LESHAN RADIO COMPANY, LTD. LESDA25VLT1G SOT-23 NOTES: A L 3 1 V G 2 B S DIM A B C D G H J J K L S V MIN 0.1102 0.0472 0.0350 0.0150 0.0701 0.0005 0.0034 0.0140 0.0350 0.0830 0.0177 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M,1982 2. CONTROLLING DIMENSION: INCH. INCHES MAX 0.1197 0.0551 0.0440 0.0200 0.0807 0.0040 0.0070 0.0285 0.0401 0.1039 0.0236 MILLIMETERS MIN MAX 2.80 3.04 1.20 1.40 0.89 1.11 0.37 0.50 1.78 2.04 0.013 0.100 0.085 0.35 0.89 2.10 0.45 0.177 0.69 1.02 2.64 0.60 C D H K 0.037 0.95 0.037 0.95 0.079 2.0 0.035 0.9 0.031 0.8 inches mm 5/7 LESHAN RADIO COMPANY, LTD. www.DataSheet4U.com EMBOSSED TAPE AND REEL DATA FOR DISCRETES T Max Outside Dimension Measured at Edge 13.0mm ± 0.5mm 1.5mm Min (.512 ±.002’’) (.06’’) A 20.2mm Min (.795’’) 50mm Min (1.969’’) Full Radius G Inside Dimension Measured Near Hub Size 8 mm A Max 330mm (12.992’’) G 8.4mm+1.5mm, -0.0 (.33’’+.059’’, -0.00) T Max 14.4mm (.56’’) Reel Dimensions Metric Dimensions Govern –– English are in parentheses for reference only Storage Conditions Temperature: 5 to 40 Deg..


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