05048 420LB28 - 420LE60 Only One Name Means ProTek’Tion™ TWO LINE PAIR 4-20mA CONTROL LOOP PROTECTOR Description The 420LE/B series is a two stage transient voltage protector providing primary and secondary protection against lightning, inductive switching and electrostatic discharge (ESD) transient threats. The first stage diverts the transient current through the ground terminal return path and the second stage clamps the voltage to a safe level without interruption of service. The 420LE/B series is designed to protect data lines from differential (line to line) and common mode (line to ground) transients. Terminals 1 and 2, 3 and 4 for the 420LE and pins 2 and 3, 4, and 5 for the 420LB are designated as line pairs. Each line pair is referenced to ground. A transient voltage suppressor is connected across each line pair for differential mode protection. Each line pair is referenced to ground. 420LB This product can also be used on telephone, signal/data lines, security, timing and control interface circuits. For most applications, the product should be located as close as possible to the equipment being protected. A low impedance grounding system is important to maintain a low voltage clamp between the line-to-ground connection. 420LE Features applications • Compatible with IEC 61000-4-2 (ESD): Air - 15kV, Contact - 8kV • Compatible with IEC 61000-4-4 (EFT): 40A - 5/50ns • Compatible with IEC 61000-4-5 (Surge): 95A, 8/20µs, Level 4 (LineGnd) & 48A, Level 4 (Line-Line) • Designed for 4-20mA Current Loops • Automatic Reset - Does Not Interrupt Service • Permanent Two-Stage Line Pair Protection • Common Mode & Differential Mode Protection • Subnanosecond Response Time • Effective Against Lightning, Inductive Switching and ESD • Multi-Process Control Loops • Fire & Security Systems • Petro-Chemical Plants • Refineries & Tank Farms Mechanical characteristics • Approximate Weight: 28 grams (420LB) & 142 grams (420LE) • Flammability Rating UL 94V-0 05048.R4 12/10 Page 1 www.protekdevices.com 05048 420LB28 - 420LE60 Only One Name Means ProTek’Tion™ typical device characteristics MAXIMUM RATINGS @ 25°C Unless Otherwise Specified PARAMETER SYMBOL VALUE UNITS IO 100 mA Operating Line Current Transient Source Voltage - 6 kV Transient Current - 8/20µs waveform - 10 kA/Wire Operating Temperature TA -55 to 100 °C TSTG -55 to 100 °C Storage Temperature ELECTRICAL CHARACTERISTICS PER LINE @ 25°C Unless Otherwise Specified PART NUMBER MAXIMUM operating line VOLTAGE MAXIMUM LEAKAGE CURRENT MAXIMUM CLAMPING VOLTAGE (8/20µs) maximum capacitance maximum line throughput resistance VOP ±volts @ vop ID µA @ 2000A VC volts @ 0v, 1mhz c pF r ohms 420LB28 28.0 5.0 40 2800 12 420LB35 35.0 5.0 60 1500 12 420LB60 60.0 5.0 85 1000 12 420LE28 28.0 5.0 40 2800 12 420LE35 35.0 5.0 60 1500 12 420LE60 60.0 5.0 85 1000 12 installation instructions There are five (5) terminals on the LINE SIDE and five (5) terminals on the EQUIPMENT SIDE of the 420LE, 4 data lines and one ground. Both grounds are connected together internally. A single low impedance is ground sufficient. Incoming data lines are cut or disconnected from the equipment to insert the 420LE/B products. The incoming lines are to be connected to the line side terminals as the equipment side lines are connected to the equipment side terminals. The location of the product should be as close to the equipment as possible. The 420LE/B series is designed with a short circuit failure mode to give maximum protection. A fuse, fusible link, or circuit breaker is recommended for each data/signal line on the input side for those that require an open circuit failure mode. Caution: A low DC resistance ground may not be indicative of a good lightning ground. Lightning contains a broad spectrum of frequencies up to 1 MHz. A low impedance path to ground at the transient frequencies is necessary. A ground strap is recommended or a #6 AWG stranded wire. For wire lengths over 1.5 meters, there may be some excessive line to earth potential under severe thunderstorm conditions. 05048.R4 12/10 Page 2 www.protekdevices.com 05048 420LB28 - 420LE60 Only One Name Means ProTek’Tion™ package information 420lB outline dimensions dim millimeters inches min max min max A - 12.7 - 0.50 B - 76.2 - 3.0 C - 48.2 - 1.90 D - 7.6 - 0.30 E - 17.8 - 0.7 Notes 1. I/O contacts spaced at 0.156” (3.96mm) centers. A B LINE EQUIPMENT D 05048.R4 12/10 C 14 4 3 15 2 13 ORIENTATION NOTCH 2 OUTPUT Connected to Transmit/Receive Circuits CONTINUITY INPUT OUTPUT 5 12 5 12 15 GND E Page 3 INPUT Connected to Line From Outside World www.protekdevices.com 05048 420LB28 - 420LE60 Only One Name Means ProTek’Tion™ package information 420lE outline dimensions dim millimeters inches min max min max A - 95.5 - 3.8 B 82.22 82.98 3.235 3.265 C - 57.2 - 2.25 D - 30.2 - 1.125 E - 15.5 - 0.61 F - 30.2 - 1.19 A B 3 3 4 WARNING 4 LINE GND EQUIPMENT GND 2 2 C D Terminal Strip 1 1 Adhesive Mylar Label Terminal Screw Mounting Hole for #8 Screw #6 Screws F E ORDERING INFORMATION base PART NUMBER (xx = Voltage) MARKING 420LBxx Logo, Date Code, Terminal Designations and Part Number 420LExx Logo, Date Code, Terminal Designations and Part Number 05048.R4 12/10 Page 4 www.protekdevices.com 05048 420LB28 - 420LE60 Only One Name Means ProTek’Tion™ company information COMPANY PROFILE ProTek Devices, based in Tempe, Arizona USA, is a manufacturer of Transient Voltage Suppression (TVS) products designed specifically for the protection of electronic systems from the effects of lightning, Electrostatic Discharge (ESD), Nuclear Electromagnetic Pulse (NEMP), inductive switching and EMI/RFI. With over 25 years of engineering and manufacturing experience, ProTek designs TVS devices that provide application specific protection solutions for all electronic equipment/systems. ProTek Devices Analog Products Division, also manufactures analog interface, control, RF and power management products. CONTACT US Corporate Headquarters 2929 South Fair Lane Tempe, Arizona 85282 USA By Telephone General: 602-431-8101 Sales: 602-414-5109 Customer Service: 602-414-5114 By Fax General: 602-431-2288 By E-mail: Sales: [email protected] Customer Service: [email protected] Technical Support: [email protected] Web www.protekdevices.com www.protekanalog.com COPYRIGHT © ProTek Devices 1998 - This literature is subject to all applicable copyright laws and is not for resale in any manner. SPECIFICATIONS: ProTek reserves the right to change the electrical and or mechanical characteristics described herein without notice. DESIGN CHANGES: ProTek reserves the right to discontinue product lines without notice and that the final judgement concerning selection and specifications is the buyer’s and that in furnishing engineering and technical assistance. ProTek assumes no responsibility with respect to the selection or specifications of such products. ProTek makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ProTek assume any liability arising out of the application or use of any product or circuit and specifically disclaims any and all liability without limitation special, consequential or incidental damages. LIFE SUPPORT POLICY: ProTek Devices products are not authorized for use in life support systems without written consent from the factory. 05048.R4 12/10 Page 5 www.protekdevices.com