2381 66. 9..../PTCTL..R.....E Vishay BCcomponents PTC Thermistors, Overload Protection For Telecommunication FEATURES PRIMARY PROTECTION (OPTIONAL) + PTC subscriber lines SECONDARY PROTECTION + PTC voltage clamp + + SUBSCRIBER LOOP INTERFACE CIRCUIT (SLIC) OR TRANSFORMER PTC MDF Typical telephone line showing where PTC thermistors can be used for overcurrent protection. * Wide resistance range in telecom area from 4 to 70 * Fast protection against power contact faults * Withstand high overload currents of up to 10 A * High voltage withstanding capabilities for the larger sized thermistors (up to 600 V) * Good tracking over a wide temperature range for all matched or binned thermistors (matching at 85 C 2 x matching at 25 C) * UL1434 approved types available (XGPU2) * All telecom PTCs are coated with a high temperature silicon lacquer (UL 94 V-0) to protect them from any harsh environments and to improve their lifetime * Compliant to RoHS directive 2002/95/EC and in accordance to WEEE 2002/96/EC DESCRIPTION APPLICATIONS Advanced developments in telephone equipment in recent years have radically altered the protection requirements for both exchange and subscriber equipment. The Vishay BCcomponents range of Positive Temperature Coefficient (PTC) thermistors includes devices specially designed to provide overcurrent protection in specific telecom applications. Over-temperature/over-load protection: * Main Distribution Frame (MDF) * Central Office Switching (C.O.) * Subscriber Terminal Equipment (T.E.) * Set-top box (S.B.) MARKING Clear marking on a grey coated body BC and R25 value ELECTRICAL DATA AND ORDERING INFORMATION MAX. I NON-TRIP TRIP TRIP MAX. RESISTANCE at CATALOG NUMBER MATCHING VMAX. CURRENT CURRENT TIME APPLICATION V at 1 A MAX. () AREA (4) (VRMS) R25 TOL. Int at T It at T tMAX. IMAX. 12NC SAP CODING () (%) (mA) (C) (mA) (C) (s) (A) (1) 25 20 1.0 220 70 70 200 25 2.5 4.0 C.O. 2381 661 93048 PTCTL4MR250GTE (1) (1) 10 20 1.0 230 100 70 250 25 3.0 2.0 MDF; ISDN 2381 661 93147 PTCTL3MR100GTE (1) 33 20 1.5 245 75 70 150 10 1.2 1.0 C.O. 2381 661 93037 PTCTL3MR330GTE 25 15 no 245 70 70 200 25 5.0 2.6 C.O. 2381 661 93175 (1) (3) PTCTL4NR250GTE (1) (3) 16 20 no 245 140 55 270 25 8.0 1.6 T.E. 2381 662 93081 (1) (3) PTCTL6NR160GTE (1) (3) 10 20 no 245 140 55 270 25 8.0 2.0 T.E. 2381 662 93074 (1) (3) PTCTL6NR100GTE (1) (3) 25 20 1.0 250 70 70 175 25 1.3 3.2 MDF; C.O. 2381 661 93148 (1) PTCTL3MR250HTE (1) 10 20 no 250 100 70 450 0 40.0 10.0 T.E. 2381 663 93025 (1) PTCTL8NR100HBE (1) 8 25 0.5 285 135 95 400 25 6.0 0.6 MDF; ISDN 2381 661 93078 (1) PTCTL4MR080JBE (1) 16 25 no 300 100 70 250 25 2.0 2.6 MDF; T.E. 2381 661 93121 (1) PTCTL3NR160KTE (1) 10 20 no 350 100 70 270 25 4.0 1.0 T.E.; S.B. 2381 661 93124 (1) PTCTL4NR100LBE (1) 10 20 1.0 350 100 70 270 25 4.0 1.0 C.O. 2381 661 93146 (1) PTCTL4MR100LTE (1) 50 20 1.0 600 50 70 140 25 1.0 1.0 C.O. 2381 661 93135 (1) PTCTL4MR500SBE (1) 35 20 3.0 600 70 70 600 0 3.0 1.0 C.O. 2381 661 93056 (1) PTCTL4MR350STE (1) 25 20 0.5 600 70 70 170 25 2.5 2.0 C.O. 2381 661 93139 (1) PTCTL4MR250STE (1) 25 20 0.5 600 70 70 170 25 5.0 2.0 C.O. 2381 662 93129 (1) PTCTL6MR250STE (1) 10 20 0.5 600 175 25 400 25 7.0 1.0 C.O. 2381 662 93114 (2) PTCTL7MR100SBE (2) 10 20 no 600 175 25 400 25 7.0 1.0 T.E.; S.B. 2381 662 93131 (2) PTCTL7NR100SBE (2) Notes (1) These types pass ITU-T K20-21-45 edition 2003 telecommunication protection recommendation (2) UL 1434 approved types and compatible with UL1459 and GR1089 (3) These types are compatible with FTCSE 131 (4) MDF: Main Distribution Frame; C.O.: Central Office Switching; T.E.: Subscriber Terminal Equipment; S.B.: Set-top Box www.vishay.com 34 For technical questions, contact: nlr@vishay.com Document Number: 29070 Revision: 25-Jun-09 2381 66. 9..../PTCTL..R.....E PTC Thermistors, Overload Protection For Telecommunication Vishay BCcomponents OVERCURRENT PROTECTION OF TELECOMMUNICATION LINES could occur for up to several hours. To handle this power, the resistance/temperature characteristic of the thermistor must have a very steep slope and the ceramic must be extremely homogeneous. The PTC thermistor must protect the telephone line circuit against overcurrent which may be caused by the following examples: * Surges due to lightning strikes on or near to the line plant. * Short-term induction of alternating voltages from adjacent power lines or railway systems, usually caused when these lines or systems develop faults. * Direct contact between telephone lines and power lines. To provide good protection under such conditions a PTC thermistor is connected in series with each line, usually as secondary protection; see Typical Telephone Line drawing on page 1. However, even with primary line protection (usually a gas discharge tube), the PTC thermistor must fulfil severe requirements. Surge pulses of up to 2 kV can occur and in order to withstand short-term power induction the PTC thermistor must withstand high voltages. If the line has primary protection a 220 V to 300 V PTC thermistor is adequate. Without primary protection, however, a 600 V PTC device is necessary. Vishay BCcomponents manufacturers a range of PTC thermistors (see Electrical Data and Ordering Information Table) covering both requirements. In case of overcurrent due to short-term induction of alternating voltages, currents of several AMPs with voltages as high as 650 VRMS can be present for several seconds For standard high voltage applications, resistance values from 25 to 50 are available. However, ISDN networks which carry high-frequency sound and vision, need lower line impedance. Telecommunication designers are therefore demanding high voltage thermistors with much lower R25 values, which places even greater demands on the manufacture of PTC thermistors. For these applications PTC thermistors which have a R25 value of 10 with voltages in the 300 VRMS to 600 VRMS range are available. In a typical telephone line application, two PTC thermistors are used, one each for the tip and ring (or A and B) wire together with their series resistors. For good line balance it is important that the thermistor and resistor pairs are matched. On request, Vishay BCcomponents can supply matched or binned PTC thermistors with R25 values matched to as close as 0.5 . In the case of direct contact between the telephone line and a power line, the PTC thermistor must withstand very high inrush power at normal mains voltage. Under such conditions, overload currents of up to 10 A on a 230 V mains PTC THERMISTORS IN BULK T D H3 H2 F L1 d COMPONENT DIMENSIONS D MAX. (mm) T MAX. (mm) H2 (mm) L1 (mm) H3 MAX. (mm) H0 (mm) 8.5 7.0 7.0 8.3 11 11 7.0 13.6 8.3 7.0 5.0 4.0 5.0 4.0 4.5 4.5 4.0 6.0 5.0 4.0 1.5 to 3.0 2.0 0.5 1.5 to 3 1.5 to 3.0 4.0 1.0 4.0 1.0 2.0 0.5 4.0 1.0 1.5 0.5 2.5 0.5 20 4.0 20 3.0 - 11.5 9.8 10.0 11.0 15.5 15.5 9.8 18.6 10.3 10.0 16 18 16 18 16 16 18 16 Document Number: 29070 Revision: 25-Jun-09 PACKAGING (1) (2) CATALOG NUMBER TYPE SPQ 12NC SAP CODING Taped on reel Taped on reel Taped on reel Taped on reel Taped on reel Taped on reel Taped on reel Bulk Bulk Taped on reel 1500 1500 1500 1500 1500 1500 1500 200 250 1500 2381 661 93048 2381 661 93147 2381 661 93037 2381 661 93175 (3) 2381 662 93081 2381 662 93074 (3) 2381 661 93148 2381 663 93025 (3) 2381 661 93078 2381 661 93121 PTCTL4MR250GTE PTCTL3MR100GTE PTCTL3MR330GTE PTCTL4NR250GTE (3) PTCTL6NR160GTE PTCTL6NR100GTE (3) PTCTL3MR250HTE PTCTL8NR100HBE (3) PTCTL4MR080JBE PTCTL3NR160KTE For technical questions, contact: nlr@vishay.com www.vishay.com 35 2381 66. 9..../PTCTL..R.....E PTC Thermistors, Overload Protection For Telecommunication Vishay BCcomponents COMPONENT DIMENSIONS D MAX. (mm) T MAX. (mm) H2 (mm) L1 (mm) H3 MAX. (mm) H0 (mm) 8.5 8.5 8.5 8.0 8.5 10.5 13 13 4.0 4.0 4.0 5.0 4.0 5.0 5.5 5.5 2.5 0.5 2.5 0.5 2.5 0.5 2.5 0.5 2.0 0.5 2.0 0.5 4.0 1.0 4.0 1.0 4.1 0.5 4.1 0.5 20 min. 20 min. 11.5 11.5 11.5 11.0 11.0 12.6 18.0 18.0 16 16 16 16 - PACKAGING (1) (2) CATALOG NUMBER TYPE SPQ 12NC SAP CODING Bulk Taped on reel Bulk Taped on reel Taped on reel Taped on reel Bulk Bulk 500 1500 500 1500 1500 1500 200 200 2381 661 93124 2381 661 93146 2381 661 93135 2381 661 93056 2381 661 93139 2381 662 93129 2381 662 93114 2381 662 93131 PTCTL4NR100LBE PTCTL4MR100LTE PTCTL4MR500SBE PTCTL4MR350STE PTCTL4MR250STE PTCTL6MR250STE PTCTL7MR100SBE PTCTL7NR100SBE Notes (1) Taped in accordance with "IEC 60286-2" (2) Naked disc ceramic for substrate mounting, available on request (3) Insulated version is also available PTC THERMISTORS TAPE ON REEL ACCORDING IEC 60286-2 T P P D P h h H3 H2 d W2 H0 H 1 L W0 W1 W P0 P1 F D0 T1 t Dimensions of the reel TAPE AND REEL ACCORDING TO IEC60286-2 DIMENSIONS in millimeters SYMBOL PARAMETER DIMENSIONS TOLERANCE d Lead diameter 0.6 10 % P Pitch between thermistors 12.7 1 F Lead to lead distance 5 + 0.6 to - 0.1 H2 Component body to seating plane 4 1 H0 Lead-wire clinch height See table 0.5 www.vishay.com 36 For technical questions, contact: nlr@vishay.com REMARKS Guaranteed between component and tape Document Number: 29070 Revision: 25-Jun-09 Legal Disclaimer Notice www.vishay.com Vishay Disclaimer ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. 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