H V SC AV ER OM AI SIO PL LA N IA BL S NT E TISP4A270H3BJ *R o ASYMMETRICAL-BIDIRECTIONAL THYRISTOR SPD TISP4A270H3BJ LCAS RLINE Protector Optimized LCAS RLINE Protector SMB Package (Top View) TISP4A270H3BJ V(BO) Derived from: -Break Switch, SW1 & SW2, Ratings -Ring Return Switch, SW3, Rating -Ringing Access Switch, SW4, Rating -Switch Isolation Ratings -Battery Voltage Range of -40 V to -60 V -Power Fault Conditions -Lightning Impulse Conditions -LCAS Characteristic Temperature Range MD4A270B Device Symbol and Circuit Application ‘4A270 V V +160 +217 -222 -270 TISP4165H3 TIP T LINE G R A 2/10 GR-1089-CORE 500 10/700 ITU-T K.20/45/21 150 10/1000 GR-1089-CORE 100 SW2 Break switch R LINE TISP4A270H3 IPPSM Standard T BAT F GND V BAT R BAT RING Rated for International Surge Wave Shapes Wave Shape SW3 Ring return switch SW1 Break switch V DD SW4 Ringing access switch Control logic Device V(BO) '7581 LCAS SCR, Diode protection TISP4A270H3BJ Designed for: -Battery-Backed Ringing Circuits Voltage Swing ........................................... +148 V to -206 V Allows ................. 103 V rms Ringing with -60 V Battery Temperature Range .................................. -40 °C to +85 °C VDRM 2 R G 1 LATCH INPUT DGND R RINGING T RING ING T SD AI4BITAMA ............................................ UL Recognized Components Description The TISP4A270H3BJ is an asymmetrical-bidirectional thyristor surge protective device (SPD). It is designed to limit the peak voltages on the RLINE (Ring Line) terminal of ‘7581/2/3 LCAS (Line Card Access Switch) devices. The TISP4A270H3BJ must have the bar-indexed terminal 1 (G) connected to the protective ground and terminal 2 (R) connected to the RLINE terminal. The TISP4A270H3BJ voltages are chosen to give RLINE terminal protection for all LCAS switch conditions. The most potentially stressful condition is low level power cross when the switches are closed. Under this condition, the TISP4A270H3BJ limits the voltage and corresponding LCAS dissipation until the LCAS thermal trip operates and opens the switches. Under open-circuit ringing conditions, the RLINE terminal will have high peak voltages. For battery backed ringing, the RLINE terminal will have a larger peak negative voltage than positive, i.e. the peak voltages are asymmetric. The TISP4A270H3BJ has a similar voltage asymmetry which will allow the maximum possible ringing voltage, while still giving protection. With a connected telephone line, the LCAS TLINE (Tip Line) terminal voltage levels will be less than 50 % of the open-circuit RLINE terminal values. So the TLINE terminal can be protected by a symmetricalbidirectional overvoltage protector of the TISP4xxxH3BJ series. How to Order Device Package Carrier For Standard Termination Finish Order As TISP4A270H3BJ BJ (SMB/DO-214AA with J-Bend) R (Embossed Tape Reeled) TISP4A270H3BJR *RoHS Directive 2002/95/EC Jan 27 2003 including Annex APRIL 2002 - REVISED FEBRUARY 2005 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. For Lead Free Termination Finish Order As TISP4A270H3BJRS TISP4A270H3BJ LCAS RLINE Protector Description (Continued) These devices allow signal voltages up to the maximum off-state voltage value, VDRM , see Figure 1. Voltages above VDRM are clipped and will not exceed the breakover voltage, V(BO), level. If sufficient current flows due to the overvoltage, the device switches into a low-voltage on-state condition, which diverts the current from the overvoltage though the device. When the diverted current falls below the holding current, IH, level the devices switches off and restores normal system operation. The TISP4A270H3BJ is guaranteed to voltage limit and withstand the listed international lightning surges in both polarities. This high current protection device is in a plastic SMB package (JEDEC DO-214AA) and supplied in embossed tape reel pack. Absolute Maximum Ratings, TA = 25 °C (Unless Otherwise Noted) Rating Symbol TA = 25 °C Repetitive peak off-state voltage, (see Note 1) TA = -40 °C VDRM Value +160/-222 148/-206 Unit V Non-repetitive peak on-state pulse current (see Notes 2 and 3) 2/10 (GR-1089-CORE, 2/10 voltage wave shape) 5/310 (ITU-T K.44, 10/700 µs voltage wave shape used in K.20/45/21) IPPSM 10/1000 (GR-1089-CORE, 10/1000 voltage wave shape) 500 150 A 100 Non-repetitive peak on-state current (see Notes 2, 3 and 4) 20 ms (50 Hz) full sine wave 55 16.7 ms (60 Hz) full sine wave ITSM 1000 s 50 Hz/60 Hz a.c. Initial rate of rise of on-state current, Exponential current ramp, Maximum ramp value < 200 A Junction temperature Storage temperature range NOTES: 1. 2. 3. 4. 60 A 2.2 diT/dt 400 A/µs TJ -40 to +150 °C Tstg -65 to +150 °C See Figure 7 for voltage values at intermediate temperatures. Initially, the TISP4A270H3BJ must be in thermal equilibrium with TJ = 25 °C. The surge may be repeated after the TISP4A270H3BJ returns to its initial conditions. EIA/JESD51-2 environment and EIA/JESD51-3 PCB with standard footprint dimensions connected with 5 A rated printed wiring track widths. See Figure 6 for the current ratings at other durations. Derate current values at -0.61 % /°C for ambient temperatures above 25 °C. Overload Ratings, TA = 25 °C (Unless Otherwise Noted) Rating Symbol Value Unit Maximum a overload on-state current without open circuit, 50 Hz/60 Hz a.c. (see Note 5) 60 0.03 s 0.07 s IT(OV)M 1.6 s 8 A rms 7 5.0 s 2.2 1000 s NOTE 40 5: Peak overload on-state current during a.c. power cross tests of GR-1089-CORE and UL 1950/60950. These electrical stress levels may damage the TISP4A270H3BJ silicon chip. After test, the pass criterion is either that the device is functional or, if it is faulty, that it has a short circuit fault mode. In the short circuit fault mode, the following equipment is protected as the device is a permanent short across the line. The equipment would be unprotected if an open circuit fault mode developed. APRIL 2002 - REVISED FEBRUARY 2005 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. TISP4A270H3BJ LCAS RLINE Protector Electrical Characteristics, TA = 25 °C (Unless Otherwise Noted) IDRM Parameter Repetitive peak offstate current Test Conditions Min VD = +100 V and -200 V TA = 25 °C Max ±5 TA = 85 °C ±10 V(BO) Breakover voltage dv/dt = ±250 V/ms, V(BO) Ramp breakover voltage dv/dt ≤ ±1 kV/µs, Linear voltage ramp, Maximum ramp value = ±500 V dv/dt = ±20 A/µs, Linear current ramp, Maximum ramp value = ±10 A I(BO) IH dv/dt ID Coff R SOURCE = 300 Ω Breakover current dv/dt = ±250 V/ms, Holding current I T = ±5 A, di/dt = +/-30 mA/ms Critical rate of rise of off-state voltage Linear voltage ramp, Maximum ramp value < 0.85V DRM Off-state current V D = ±50 V Off-state capacitance f = 1 MHz, Typ R SOURCE = 300 Ω . µA +217 -270 V +231 -288 V ±0.15 ±0.6 A ±0.15 ±0.6 A kV/µs ±5 TA = 85 °C V d = 1 V rms Unit ±10 VD = 100 V 21 23 VD = 50 V 27 29 VD = 10 V 41 46 VD = 5 V 48 53 VD = 2 V 56 62 VD = 1 V 61 67 VD = 0 68 74 VD = -1 V 62 68 VD = -2 V 56 62 VD = -5 V 48 52 VD = -10 V 40 45 VD = -50 V 25 28 VD = -100 V 20 22 Typ Max µA pF Thermal Characteristics Parameter Test Conditions Min EIA/JESD51-3 PCB, IT = ITSM(1000), RΘJA Junction to free air thermal resistance 113 TA = 25 °C, (see Note 6) 265 mm x 210 mm populated line card, 4-layer PCB, IT = ITSM(1000), TA = 25 °C Unit °C/W 50 NOTE 6: EIA/JESD51-2 environment and PCB has standard footprint dimensions connected with 5 A rated printed wiring track widths. APRIL 2002 - REVISED FEBRUARY 2005 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. TISP4A270H3BJ LCAS RLINE Protector Parameter Measurement Information +i Quadrant I IPPSM Switching Characteristic ITSM V(BO) I(BO) IH IDRM VDRM -v VD ID VD ID VDRM +v IDRM IH I(BO) V(BO) ITSM Quadrant III Switching Characteristic IPPSM -i PMXXAEA Figure 1. Voltage-Current Characteristic for R and G Terminal Pair All Measurements are Referenced to the G Terminal APRIL 2002 - REVISED FEBRUARY 2005 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. TISP4A270H3BJ LCAS RLINE Protector Typical Characteristics OFF-STATE CURRENT vs JUNCTION TEMPERATURE TCHAG 100 1.10 NORMALIZED BREAKOVER VOLTAGE vs JUNCTION TEMPERATURE TC4HAF Normalized Breakover Vo ltage VD = ±50 V |ID| - Off-State Current - µA 10 1 0·1 0·01 1.05 1.00 0.95 0·001 -25 0 25 50 75 100 125 TJ - Junction Temperature - °C -25 150 Figure 2. 100 TA = 25 °C tW = 100 µs NORMALIZED HOLDING CURRENT vs JUNCTION TEMPERATURE TC4HAD 1.5 Normalized Holding Current IT - On-State Current - A 2.0 TC4HACBA 70 50 40 30 20 15 10 7 5 4 3 1.0 0.9 0.8 0.7 0.6 0.5 2 1.5 1 0.7 150 Figure 3. ON-STATE CURRENT vs ON-STATE VOLTAGE 200 150 0 25 50 75 100 125 TJ - Junction T emperature - °C 0.4 1 1.5 2 3 4 5 VT - On-State Voltage - V 7 Figure 4. APRIL 2002 - REVISED FEBRUARY 2005 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. 10 -25 0 25 50 75 100 125 TJ - Junction T emperature - °C Figure 5. 150 TISP4A270H3BJ LCAS RLINE Protector Rating and Thermal Information VDRM DERATING FACTOR vs MINIMUM AMBIENT TEMPERATURE TI4HAC 30 TI4HADC 1.00 VGEN = 600 Vrms, 50/60 Hz 20 RGEN = 1.4*VGEN/ITSM(t) 15 EIA/JESD51-2 ENVIRONMENT EIA/JESD51-3 PCB TA = 25 °C 0.99 0.98 10 9 8 7 6 5 Derating Factor ITSM(t) - Non-Repetitive Peak On-State Current - A NON-REPETITIVE PEAK ON-STATE CURRENT vs CURRENT DURATION 4 0.97 0.96 0.95 3 0.94 2 1.5 0·1 1 10 100 t - Current Duration - s Figure 6. 1000 0.93 -40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 TAMIN - Minimum Ambient Temperature - °C Figure 7. APRIL 2002 - REVISED FEBRUARY 2005 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. TISP4A270H3BJ LCAS RLINE Protector APPLICATIONS INFORMATION Calculation of the TISP4A270H3BJ Voltage Values Figure 8 and the following text summarizes the derivation process for the TISP4A270H3BJ voltages. Details of the full process and other design aspects are covered by the document entitled TISP4A270H3BJ - Optimized ‘758x LCAS Overvoltage Protection. Calculation of RLINE protector voltage parameters A Maximum SW1, SW2, SW3 and Isolation voltages at TAMIN System TAMIN Maximum TLINE and RLINE B voltage ratings set by SW1, SW2 and SW3 Maximum TBAT, RBAT and TRINGING bias voltages on SW1, SW2 and SW3, 0, Vbat Maximum protector V(BO) C at TA = 25 °C Maximum power fault and impulse protection voltage increase of 25 °C V(BO) = 1.15 x D Protector VDRM at TA = 25 °C V(BO) /VDRM factor for specific V(BO) voltage E Minimum protector VDRM at TAMIN VDRM versus temperature data and TAMIN RLINE protector V(BO) @ 25 °C VDRM at 25 °C and TAMIN AI4CITRAMA Figure 8. Derivation of TI SP4A270H3BJ V(BO) and V DRM APRIL 2002 - REVISED FEBRUARY 2005 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. TISP4A270H3BJ LCAS RLINE Protector Calculation of the TISP4A270H3BJ Voltage Values (Continued) Box A: The voltage rating of the break and ring return switches and their isolation decreases with temperature. At the minimum LCAS operating temperature of -40 °C, the switch rating is ±310 V. Box B: A switch pole voltage rating to ground is reduced by any opposing bias voltage applied to the other pole. For battery-backed ringing the d.c. bias on TRINGING is zero. Bias voltages are applied to the RBAT and TBAT poles by the SLIC. For SLIC output levels of zero and -60 V, the RLINE and TLINE voltage ratings to ground become +250 V and -310 V at -40 °C. Box C: Allowing for the extreme condition of a power fault at -40 °C, the overvoltage protector V(BO) at its highest temperature must not exceed +250 V and -310 V. The IEEE Standard C62.37.1-2000, IEEE Guide for the Application of Thyristor Surge Protective Devices, pp 25-27 recommends a factor of 1.15 for the ratio of the power fault V(BO) to the 25 °C V(BO). Applying this factor makes the 25 °C V(BO) voltage values +217 V and -270 V. Box D: From the V(BO) values the values of protector 25 °C VDRM were determined as +160 V and -222 V. Box E: Derating the 25 °C VDRM down to the LCAS minimum operating temperature gives -40 °C VDRM values of +148 V and -206 V. A further rating check has to be done on the ringing access switch, SW4. The limit condition is in the negative ringing polarity. The applied ringing voltage to the RRINGING terminal must not exceed -205 V when the RLINE terminal is at +250 V. For a battery voltage of -40 V and -60 V the a.c. ringing levels must not exceed 117 V rms and 102 V rms respectively. In IVD (Integrated Voice Data) applications the a.c. ringing level must be reduced by the level of digital signal applied to the line. For a 20 V peak ADSL signal level, the ringing voltages reduce to 103 V rms and 89 V rms respectively. Figure 9 shows a typical application circuit. Fuses F1 and F2 need high breaking capacity to safely interrupt 40 A rms (UL 60950) and 60 A rms (Telcordia GR-1089-CORE) currents from a 600 V rms source. The Bourns® Telefuse™ type B1250T is a surface mount fuse which has UL recognition for these UL and Telcordia standards. The TISP4A270H3BJ is overload rated to carry currents up to 60 A rms for the time period that it takes the fuse to operate. SW1 Break switch '7581 LCAS TISP4165H3 Fuse overcurrent protectors RING SW3 Ring return switch Low pass filter G F2 B1250T TBAT TLINE F1 R SLIC SW2 Break switch SCR, Diode protection B1250T TISP4A270H3 VADSL ADSL MODEM High pass filter VBAT VDD SW4 Ringing access switch C1 FGND RBAT RLINE Control logic TIP RRINGING TRINGING R1 R2 LATCH INPUT Vbat DGND TSD VRING VBAT Ring generator AI4AITAM A Figure 9. ADSL IVD using Common Protection APRIL 2002 - REVISED FEBRUARY 2005 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. TISP4A270H3BJ LCAS RLINE Protector MECHANICAL DATA Recommended Printed Wiring Land Pattern Dimensions 2.54 (.100) SMB Land Pattern 2.40 (.095) DIMENSIONS ARE: 2.16 (.085) MILLIMETERS (INCHES) MDXX BID Device Symbolization Code Devices will be coded as below. Terminal 1 is indicated by an adjacent bar marked on the package body. Device TISP4A270H3BJ Symbolization Code 4A270H Carrier Information For production quantities, the carrier will be embossed tape reel pack. Evaluation quantities may be shipped in bulk pack or embossed tape. Package SMB Carrier Standard Quantity Embossed Tape Reel Pack 3000 APRIL 2002 - REVISED FEBRUARY 2005 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. TISP4A270H3BJ LCAS RLINE Protector MECHANICAL DATA SMB (DO-214AA) Plastic Surface Mount Diode Package This surface mount package consists of a circuit mounted on a lead frame and encapsulated within a plastic compound. The compound will withstand soldering temperature with no deformation, and circuit performance characteristics will remain stable when operated in high humidity conditions. Leads require no additional cleaning or processing when used in soldered assembly. SMB02 4.06 - 4.57 (.160 - .180) 3. 30 - 3. 94 (.130 - .155) 1 2 Index Mark 2. 00 - 2.40 (.079 - .094) 1. 90 - 2.10 (.075 - .083) 0. 76 - 1.52 (.030 - .060) 0. 10 - 0. 20 (.004 - .008) 1. 96 - 2. 32 (.077 - .091) 5. 21 - 5.59 (.205 - .220) DIMENSIONS ARE: MILLIMETERS (INCHES) MDXXBHG APRIL 2002 - REVISED FEBRUARY 2005 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. TISP4A270H3BJ LCAS RLINE Protector MECHANICAL DATA Tape Dimensions SMB02 Package Single-Sprocket Tape 3. 90 - 4.10 (.154 - .161 ) ø 1. 95 - 2.05 (.077 - .081) 1. 50 MIN . (.059) 1. 55 - 1.65 ø (.061 - .065 ) 0. 40 MAX . (.016) 1. 65 - 1.85 (.065 - .073 ) 5. 45 - 5.55 (.215 - .219 ) 11.70 - 12.30 (.461 - .484 ) 8. 20 MAX . (.323) e 0 MIN . 7. 90 - 8.10 (.311 - .319 ) Direction of Feed Cover Tape Carrier Tape Embossment 20 ° Index Mark DIMENSIONS ARE: MILLIMETERS (INCHES) 4. 50 MAX . (.177) Maximum component rotation Typical component cavity center line Typical component center line NOTES: A. The clearance between the component and the cavity must be within 0.05 mm (.002 in) MIN. to 0.65 mm (.026 in) MAX. so that the component cannot rotate more than 20 ° within the determined cavity. B. Taped devices are supplied on a reel of the following dimensions:Reel diameter: 330 mm ± 3.0 mm (12.99 in ± .118 in) Reel hub diameter 75 mm (2.95 in) MIN. Reel axial hole: 13.0 mm ± 0.5 mm (.512 in ± .020 in) C. 3 000 devices are on a reel. “TISP” is a trademark of Bourns, Ltd., a Bourns Company, and is Registered in U.S. Patent and Trademark Office. “Bourns” is a registered trademark of Bourns, Inc. in the U.S. and other countries. APRIL 2002 - REVISED FEBRUARY 2005 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. MDXXBHF