STC-FM4-DRC - SOLAHD - Datasheet.Live

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1Power Protection and Conditioning

STC-642 Series, Data/Signal Line Protection

The STC-642 series of surge suppressors are dual pair (four

wire) modules using three-stage hybrid technology. This

module addresses over voltage transients with gas tubes

and silicon avalanche components. In addition, sneak and

fault currents are mitigated with resetable fuses (PTCs). The

PTCs increase resistance several orders of magnitude when

over currents exceed safe levels. A normal state resumes

when over currents are removed. The ability to self restore in

this manner signicantly increases suppressor performance

and survivability.

The STC-642 card edge module is gold-plated, double

sided and is designed to mate with the STC-642 gold-plated

female terminal connector (sold separately). When snapped

together, the data circuits pass thru the protector in a serial

fashion from the four Field Side terminals to the four

Electronics Side terminals. Terminals 1 or 10 of the

STC-PCB1B must be attached to building approved ground.

Application

• Intended for indoor use on communication loop circuits

which have been isolated from the Public Switch

Telephone Network.

• RS232 applications used with STC642-020 and

STC-PCB1B

• 4-20 ma signal applications used with STC642-036 and

STC-PCB1B

• For use in service capable of supplying less than 150

milliamperes continuously.

Features

• Lightning protection for low voltage data

• Signal lines

• Three-stage protection

• Sneak/fault current protection

• Resetable solid-state fuses - PTCs

• Low capacitance option for high speed data

• Plug-in module / Requires PCB1B base

• Hybrid design of includes series resistance

• Fast response time

• Five year limited warranty

Certifications and Compliances

• Listed

- UL 497B

• RoHS Compliant

Specifications

Description STC642-020 * STC642-036 *

Peak Surge Current

(10 times)

8x20 s .. 10kA

10x700 s 500A per line

Life Expectancy 8x20 s (2000A) .. >100 occurrences

10x700 s (400A)

Response Time <1ns

Voltage Clamp 20 36

Technology SAD Hybrid

Resistance 5 (typical)

Capacitance (typical) 1500pf

Operating Temperature -40oC to +85oC

Weight 2 oz.

Dimensions H x W x L - in (mm)

STC-642 & PCB1B

2.05 x 1.00 x 2.40

(52.1 x 25.4 x 61.0)

Warranty 5 year limited warranty

Catalog Number Description

STC642-020 20 Volt Clamp

STC642-036 36 Volt Clamp

STC-PCB1B

Base for all STC-642 models. Designed to

accommodate up to 10 AWG wire. It offers Flat/

Phillips screws and can be mounted using 2 #6

size screws. Must be ordered separately.

STC-FM4-DRC Optional DIN Rail Mounting Clip for STC-PCB1B

* Part number STC-PCBIB sold separately

Selection Table