LESHAN RADIO COMPANY, LTD. Transient Voltage Suppressors for ESD Protection General Description The LGSOT12LT1G is a transient 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. LGSOT12LT1G S-LGSOT12LT1G 3 1 2 Applications z z z Computers Printers Communication systems SOT– 23 Features z Unidirectional Transil functions z z z Low leakage current: IR max< 20 μA at VRM 300W peak pulse power(8/20μs) Transient protection for data lines as per IEC61000-4-2(ESD) 15KV(air) 8KV(contact) IEC61000-4-5(Lightning) see IPPM below We declare that the material of product compliance with RoHS requirements. S- Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC-Q101 Qualified and PPAP Capable. z z ORDERING INFORMATION Device LGSOT12LT1G S-LGSOT12LT1G Package Shipping SOT–23 3000/Tape & Reel Absolute Ratings (Tamb=25°C ) Symbol Parameter Value Units PPP Peak Pulse Power (tp = 8/20μs) 300 W TL Maximum lead temperature for soldering during 10s 260 °C Tstg Storage Temperature Range -55 to +150 °C Top Operating Temperature Range -40 to +125 °C Tj Maximum junction temperature 150 °C IEC61000-4-2 air discharge 15 kv IEC61000-4-2 contact discharge 8 Electrostatic discharge VPP Rev.O 1/5 LESHAN RADIO COMPANY, LTD. LGSOT12LT1G,S-LGSOT12LT1G Electrical Parameter Symbol Parameter VRM Stand-off voltage VBR Breakdown voltage VCL Clamping voltage IRM Leakage current IPPM Peak pulse current Electrical Characteristics Maximum Minimum Maximum Maximum Leakage Breakdown Clamping Pulse Peak Current Voltage Voltage Current @ VRM 1mA VRM IRM VBR V µA V V LGSOT04LT1G 4.0 20.0 5.0 LGSOT05LT1G 5.0 20.0 LGSOT08LT1G 8.0 LGSOT12LT1G 12.0 Rated Stand-off Part Numbers Maximum Capacitance Voltage 1A 1) 5A 1) tp=8/20us 0v, 1MHz IPPM C V A pF 8.5 10.5 17 300 6.0 9.8 12.5 17 220 5.0 8.5 13.4 15.0 15 190 1.0 13.3 19.0 28.0 12 150 VCL 1).8/20 waveform used. (see fig2.) Typical Characteristics Fig1. Peak Pulse Power VS Pulse Time Rev.O 2/5 LESHAN RADIO COMPANY, LTD. LGSOT12LT1G,S-LGSOT12LT1G Fig2. Pulse Waveform Fig3.Power Derating Rev.O 3/5 LESHAN RADIO COMPANY, LTD. LGSOT12LT1G,S-LGSOT12LT1G Application Note 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 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 becomes a low impedance path diverting the transient current to ground. The LGS0T12LT1G is the ideal board evel protection 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. Rev.O 4/5 LESHAN RADIO COMPANY, LTD. LGSOT12LT1G,S-LGSOT12LT1G SOT-23 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M,1982 2. CONTROLLING DIMENSION: INCH. A L 3 1 V 2 DIM B S G C D H K J MIN 0.1102 0.0472 0.0350 0.0150 0.0701 0.0005 0.0034 0.0140 0.0350 0.0830 0.0177 A B C D G H J K L S V 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 0.177 0.35 0.69 0.89 1.02 2.10 2.64 0.45 0.60 0.037 0.95 0.037 0.95 0.079 2.0 0.035 0.9 0.031 0.8 inches mm Rev.O 5/5