Circuit Protection Selection Guide
108Pages

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Introduction > . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Why Protection is Needed > . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Bourns Circuit Protection Products > . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Select the Appropriate Device for your Application > . . . . . ....

Bourns is pleased to present this comprehensiveguide to Telecom Circuit Protection, encompassing our broad range of technologies and products. This guide will provide the background information and selection recommendations needed to ensure that your next project achieves the level of cost-effective field reliability demanded by todays customers. Bourns commissioned a survey of telecom circuit protection users worldwide to determine their priorities and needs. We found that reliability, technical and design support and exemplary knowledge of protection technology were by far the three most...

which operate by rapidly moving fromhigh impedance to a non-linear resistance characteristic that clamps surge voltages. TVS diodes provide a fast-acting and well-controlled clamping voltage, however they exhibit high capacitance and low energy capability thereby restricting the maximum surge current. > TISPήThyristor Transient Voltage Suppressor(TVS) Diodes -based devices initiallyclamp the line voltage, and then switch to a low- voltage OnӔ state. After the surge, when the current drops below the holding current,Ӕ the protector returns to its original high impedance state.Bourns offers a...

Bourns family of Line Feed Resistor (LFR) Line Protection Modules (LPMs) , normally fabricated as athick-film resistor on a ceramic substrate. LPMs have the ability to withstand high voltage impulses without breaking down, AC current interruption occurs when the high temperature developed by the resistor causes mechanical expansion stresses that result in the ceramic breaking open. Low current power induction may not break the LFR open, creating long-term surface temperatures of more than 300 C. To avoid heat damage to the PCB and adjacent components, maximum surface temperature can be...

Data and Signal Systems Surge Protectors offersurge protection to field mounted 4-20 mA transmitters. They feature a 1669 series protector with a sealed stainless steel pipe for easy connection to a field transmitter 1/2 inch NPT port and typically a rail-mounted 1820 series protector to protect the DCS equipment at the opposite end of the loop. connect the device to other external devices such aslaptop computers and headsets. Bourns offers the capability to integrate resistors, capacitors, inductors, diodes and transistors into a single monolithic device with minimal packaging overhead. >...

The following Network Diagram gives an overview of where thevarious technologies are used in todays communication electronics industry.

USB On The Go (OTG) Power over Ethernet (PoE) > After the success of the USB 2.0 standard, the USBImplementers Forum, Inc. developed an expansion standard called USB OTG (On The Go). USB OTG was developed based on the concept of allowing peripheral devices to communicate directly with each other without going through a PC host. USB 2.0 traditionally consisted of a host/periphery topology where a PC was the host and the peripheral could communicate only through the host device. However, USB OTG was introduced to supplement USB 2.0 to allow existing mobile devices to communicate in a...

TSP (Thyristor SurgeProtector) See NoYes Yes YesYesYesYesNoNoNoNoNo STARTESDProtection Request? > (IEC61000-4-2) ArrayRequired?Is SurgeRequired? Diode Arrays > (page 64) MLE Series > 8/20 յs + ESD specified 18 V max. DC operationՕ Leakage current characterized Tolerance CapacitanceRequirement? > (8/20 s) MLD Series Low CapacitanceRequirement?Low CapacitanceRequirement? > Օ 12 V DC voltages ESD data sheet characterizedՕ 5 pF max. MLC Series MLA Series > 5 V plus DC voltages Օ ESD data sheet characterized 0.5 pF max. 12 V option Օ Ultra-low leakage current 5.5 V plus DC voltages Օ 8/20 s...

12.7(.500) > 7.6(.30) R > DIMENSIONS = MILLIMETERS(INCHES) R2.0(.075)2 PLCS. 0.8(.030)2 PLCS. 1.5(.060) 8.1(.318) 2.0(.078) >

StandoffVoltageV ProtectionVoltageV I > TSP Ratings for Lightning Surge Standards Device DeliveryOptions > DRM (BO) GR-1089-CORE2/10 ֵs(A) GR-1089-CORE10/1000 s(A) ITU-T K20/215/310 յs(A) (V) (V) > TR TISP4072F3LM, LMR, LMFR5872803550TISP4082F3LM, LMR, LMFR6682TISP4125F3LM, LMR, LMFR1001251753550TISP4150F3LM, LMR, LMFR120150TISP4180F3LM, LMR, LMFR145180TISP4240F3LM, LMR, LMFR180240TISP4260F3LM, LMR, LMFR200260TISP4290F3LM, LMR, LMFR220290TISP4320F3LM, LMR, LMFR240320TISP4380F3LM, LMR, LMFR270380TISP4600F3LM, LMR, LMFR4206001904570TISP4700F3LM, LMR, LMFR500700 StandoffVoltageV...

StandoffVoltageV ProtectionVoltageV I > TSP Ratings for Lightning Surge Standards Device DeliveryOptions > DRM (BO) GR-1089-CORE2/10 ֵs(A) GR-1089-CORE10/1000 s(A) ITU-T K20/215/310 յs(A) (V) (V) > K1 K3 K4 K2 G3,G4AAG1,G2 TISP6NTP2ADRProgrammable 0 to -90 V852025TISP6NTP2CDRProgrammable 0 to -170 V902540 StandoffVoltageV ProtectionVoltageV I > TSP Ratings for Lightning Surge Standards Device DeliveryOptions > DRM (BO) GR-1089-CORE10/1000 s(A) ITU-T K20/215/310 յs(A) (V) (V) > TISP83121DRProgrammable 0 to 100 V150250 G1G2A K