SR1203 LEIDITECH
Document overview
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- PDF pages: 7
Technical content
A pplications Dime nsions SOT-143 Pin Configuration Mechanical Characteristics A bsolute Maximum Ratings(T amb=25°C unless otherwise specified) Pa rameter Symbol Value Unit Pp p 350 W ESD per IEC 61000−4−2 (Air) VES D ±30 Kv ES D per IEC 61000−4−2 (Contact) ±30 Opera ting Temperature Range TJ -55 to +125 ℃ Stora ge Temperature Range TST J -55 to +150 ℃ Pe ak Pulse Current (8/20μs) L OW CAPACITANCE TVS DIODE ARRAY U SB Power & Data Line Protection Ethernet 10BaseT I2C Bu s Protection Video Line Protection T1/E1 secondary IC Side Protection Microcontroller Input Protection ISDN S/T Interface WAN/LAN Equipment SOT -143 Package Molding Compound Flammability Rating : UL 94V-O Weight 10 Millgrams (Approximate) Quantity Per Reel : 3,000pcs Reel Size : 7 inch Lead Finish : Lead Free SR1203 Feat ures
- Ul tra low leakage: nA level
- Oper ating voltage: 12V
- Low clamping voltage
- Com plies with following standards: – IEC 61000-4-2 (ESD) immunity test Air discharge: ±30kV Contact discharge: ±30kV – IEC61000-4-4 (EFT) 40A (5/50ns) – IEC61000-4-5 (Lightning) 6.5A (8/20μs)
- RoH S Compliant AEC-Q101 qualified● Rev
l Characteristics(T A=25°C unless otherwise specified) Pa rt Number Device Marking VR WM (V) VBR (V) IT VC A Vc IR μA ax) C (Pf) (Typ.) (Max) (@A) SR1203 LKA 12 13.3 1 15.8 30 16 1 5 Rev SR1203
Figure 6. Typic Capacitance vs. Reverse Voltage
T o protect data lines and the power line, connect Pin 4 directly to the positive supply rail (Vcc). In this configuration the data lines are referanced to the supply voltage. The internal TVS diode prevents over-voltage on the supply rail. The path length is kept as short as possible to minimize parasitic inductance.' The SR1203 serise can be isolated from the power supply by adding a series resistor between pin 4 and Vcc+. A value or 10kΩ is recommended. The internal TVS and steering diodes remain biased, providing the advantage of lower capacitance. The path length is kept as short as possible to minimize parasitic inductance. In applications where no positive supply referance is available, or complete supply isolation is desired, the internal TVS may be used as the referance. In the case, pin 4 is not connected. The steering diodes will begin to conduct the voltage on the protected line exceeds the working voltage of the TVS (plus one diode drop). 1. Data lines and pow er supply protection using Vcc as referance 2. Data lines protection with bias and power supply isolation resistor 3. Data lines protection using internal TVS diodes as referance Rev SR1203
nghai Leiditech Electronic Co.,Ltd Email: sale1@leiditech.com Tel : +86- 021 50828806 Fax : +86- 021 50477059 Rev SR1203