SSRP105| Datasheet

SSRP105, SSRP105B1

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SSRP105B1
DUAL ASYMMETRICAL OVERVOLTAGE PROTECTION FOR TELECOM LINE

Application Specific Discretes ASDTM

MAIN APPLICATIONS Where asymmetrical protection against lightning strikes and other transient overvoltages is required : s Solid-State relays s SLIC with integrated ring generator DESCRIPTION The SSRP105B1 is a dual asymmetrical transient voltage suppressor designed to protect a solid-state ring relay or SLICs with integrated ring generator from overvoltages. The asymmetrical protection configuration is necessary to allow the use of all different types of ringing schemes.

SO-8

FUNCTIONAL DIAGRAM FEATURES
s

s s

Dual bi-directional asymmetrical protection Stand-off voltages: q Between Line and Ground +105V for positive voltages -180V for negative voltages q Between Line and Line +180V for positive voltages -180V for negative voltages Peak pulse current: IPP = 50A (5/310us) Holding current: q IH+ = 100mA q IH- = 150mA

TIP

GND

RING

GND

COMPLY WITH THE FOLLOWING STANDARDS Peak Surge Voltage (V) ITU-T K20 / K21 VDE0433 IEC61000-4-5 FCC Part 68 BELLCORE GR1089 First level 1500 2000 Level 3 Level 4 1500 800 2500 1000 Voltage Waveform (us) 10/700 10/700 10/700 1.2/50 10/160 10/560 2/10 10/1000 Current Waveform (us) 5/310 5/310 5/310 8/20 10/160 10/560 2/10 10/1000 Required Peak current (A) 38 50 50 100 200 100 500 100 Min. serial resistor to meet standards () 18 10 10 19

TM: ASD is trademarks of STMicroelectronics.

October 2002 - Ed: 1A

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