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oH V SC AV ER OM AI SIO PL LA N IA BL S NT E
TISP4070L3LM, TISP4350L3LM BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS
*R
TISP4xx0L3LM Overvoltage Protector Series
Ion-Implanted Breakdown Region Precise and Stable Voltage Low Voltage Overshoot under Surge
Device `4070 `4350 VDRM V 58 275 V(BO) V 70 350
LM Package (Top View)
T(A) NC R(B)
1 2 3
MD4XATA
NC - No internal connection on pin 2
Ring-Tip Protection ............................................ TISP4350L3LM Electronics Protection ....................................... TISP4070L3LM Rated for UL 1950, ITU-T and TIA/EIA-IS-968
Surge Type A B Wave Shape 10/160 10/560 9/720 10/700 ITSP A 50 30 40
Device Symbol
T
Standard TIA/EIA-IS-968 (formerly FCC Part 68) TIA/EIA-IS-968 UL 1950/ ITU-T K.21
R
SD4XAA
Terminals T and R correspond to the alternative line designators of A and B
Description
These devices are designed to limit overvoltages on the telephone line. Overvoltages are normally caused by a.c. power system or lightning flash disturbances which are induced or conducted on to the telephone line. A single device provides 2-point protection and is typically used for the protection of 2-wire telecommunication equipment (e.g. between the Ring to Tip wires for telephones and modems). Combinations of devices can be used for multi-point protection (e.g. 3-point protection between Ring, Tip and Ground). The protector consists of a symmetrical voltage-triggered bidirectional thyristor. Overvoltages are initially clipped by breakdown clamping until the voltage rises to the breakover level, which causes the device to crowbar into a low-voltage on state. This low-voltage on state causes the current resulting from the overvoltage to be safely diverted through the device. The high crowbar holding current prevents d.c. latchup as the diverted current subsides.These protectors are guaranteed to voltage limit and withstand the listed lightning surges in both polarities. After a Type A surge (200 A, 10/160, and 100 A, 10/560) the equipment is allowed to be non-operational or operational. For an operational pass, series resistance must be added to reduce the Type A currents to within the TISP4xxxL3LM ratings (50 A, 10/160 and 30 A, 10/560). Alternatively, a series fuse with an I2t greater than 0.45 A 2s and less than 5.6 A2s could be used to give a non-operational pass. After a Type B surge the equipment must be operational. As the TISP4xxxL3LM has a current rating of 40 A, will survive both Type B surges, metallic (25 A, 9/720) and longitudinal (37.5 A, 9/720), giving an operational pass to Type B surges. For metallic protection, the TISP4350L3LM is connected between the Ring and Tip conductors. For longitudinal protection two TISP4350L3LM protectors are used; one between the Ring conductor to ground and the other between the Tip conductor to ground. The FCC Part 68 B type ringer has voltages of 56.5 V d.c. and up to 150 V rms a.c., giving a peak voltage of 269 V. The TISP4350L3LM will not clip the B type ringing voltage as it has a high impedance up to 275 V. The TISP4070L3LM should be connected after the hook switch to protect the following electronics. As the TISP4070L3LM has a high impedance up to 58 V, it will switch off after a surge and not be triggered by the normal exchange battery voltage.
How To Order
For Standard Termination Finish Order As
TISP4070L3LM TISP4350L3LM
Device TISP4070L3 TISP4350L3
Package Type LM (Straight Lead DO-92) LM (Straight Lead DO-92)
Carrier Bulk Pack Bulk Pack
Quantity 2 000 2 000
For Lead Free Termination Finish Order As
TISP4070L3LM-S TISP4350L3LM-S
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex JULY 2000 - REVISED FEBRUARY 2005 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.
TISP4xx0L3LM Overvoltage Protector Series
Absolute Maximum Ratings, TA = 25 C (Unless Otherwise Noted)
Rating Repetitive peak off-state voltage Non-repetitive peak on-state pulse current (see Notes 1 and 2) 10/160 (TIA/EIA-IS-968 (formerly FCC Part 68), 10/160 s voltage wave shape) 5/310 (ITU-T K.21, 10/700 voltage wave shape) 5/320 (TIA/EIA-IS-968 (formerly FCC Part 68), 9/720 s voltage wave shape) 10/560 (TIA/EIA-IS-968 (formerly FCC Part 68), 10/560 s voltage wave shape) Non-repetitive peak on-state current (see Notes 2 and 3) 50/60 Hz, 1 s Initial rate of rise of on-state current, Linear current ramp, Maximum ramp value < 38 A Junction temperature Storage temperature range ITSP `4070 `4350 Symbol VDRM Value 58 275 50 40 40 30 4 250 -40 to +150 -65 to +150 Unit V
A
ITSM diT/dt TJ Tstg
A A/s C C
NOTES: 1. Initially, the TISP4xxxL3LM must be in thermal equilibrium with TJ = 25 C 2. The surge may be repeated after the TISP4xxxL3LM returns to its initial conditions. 3. EIA/JESD51-2 environment and EIA/JESD51-3 PCB with standard footprint dimensions connected with 5 A rated printed wiring track widths. Derate current values at -0.61 %/C for ambient temperatures above 25 C.
Electrical Characteristics, TA = 25 C (Unless Otherwise Noted)
Parameter IDRM V(BO) Repetitive peak offstate current Breakover voltage VD = V DRM dv/dt = 250 V/ms, RSOURCE = 300 dv/dt = 1000 V/s, Linear voltage ramp, Maximum ramp value = 500 V di/dt = 20 A/s, Linear current ramp, Maximum ramp value = 10 A dv/dt = 250 V/ms, RSOURCE = 300 IT = 5 A, tW = 100 s IT = 5 A, di/dt = - /+ 30 mA/ms Linear voltage ramp, Maximum ramp value < 0.85 VDRM VD = 50 V f = 100 kHz, Vd = 1 V rms, VD = 0, VD = 1 V, VD = 5 V f = 100 kHz, Vd = 1 V rms, VD = 0, VD = 1 V, VD = 5 V TA = 85 C `4070 40 38 31 26 24 20 Test Conditions TA = 25 C TA = 85 C `4070 `4350 Min Typ Max 5 10 70 350 Unit A V
V(BO)
Breakover voltage
'4070 '4350 40 120 5
78 359 250 3 350
V
I(BO) VT IH dv/dt ID
Breakover current On-state voltage Holding current Critical rate of rise of off-state voltage Off-state current
mA V mA kV/s
10 50 48 39 33 30 25
A
Coff
Off-state capacitance
`4350
pF
JULY 2000 - REVISED FEBRUARY 2005 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.
TISP4xx0L3LM Overvoltage Protector Series
Thermal Characteristics
Parameter Test Conditions EIA/JESD51-3 PCB, I T = I TSM(1000) , TA = 25 C, (see Note 4) 265 mm x 210 mm populated line card, 4-layer PCB, I T = I TSM(1000) , TA = 25 C 57 Min Typ Max 120 C/W Unit
RJA
Junction to free air thermal resistance
NOTE 4: EIA/JESD51-2 environment and PCB has standard footprint dimensions connected with 5 A rated printed wiring track widths.
JULY 2000 - REVISED FEBRUARY 2005 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.
TISP4xx0L3LM Overvoltage Protector Series
Parameter Measurement Information
+i ITSP Quadrant I Switching Characteristic
ITSM
V(BO)
IH
IDRM I(BO)
-v
VDRM IDRM
VD
ID ID VD
VDRM
+v
I(BO) V(BO)
IH
ITSM Quadrant III Switching Characteristic ITSP -i PMXXAJA
Figure 1. Voltage-Current Characteristic for T and R Terminals All Measurements are Referenced to the R Terminal
JULY 2000 - REVISED FEBRUARY 2005 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.
TISP4xx0L3LM Overvoltage Protector Series
MECHANICAL DATA
Device Symbolization Code
Devices will be coded as below.
Symbolization Code 4070L3 4350L3
Device TISP4070L3 TISP4350L3
JULY 2000 - REVISED FEBRUARY 2005 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.
TISP4xx0L3LM Overvoltage Protector Series
MECHANICAL DATA
LM002 (DO-92) 2-Pin Cylindrical Plastic Package
This single-in-line 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.
LM002 Package (DO-92)
4.44 - 5.21 (.175 - .205) 3.43 (.135) 2.03 - 2.67 (.080 - .105) MIN. 3.17 - 4.19 (.125 - .165) 2.03 - 2.67 (.080 - .105)
4.32 - 5.34 (.170 - .210) 2.20 (.086)
MAX.
2
A
2
MIN. 0.40 - 0.56 (.016 - .022)
12.7 (0.50)
1
3
3 VIEW A
1
1.14 - 1.40 (.045 - .055) 2.41 - 2.67 (.095 - .105)
0.35 - 0.41 (.014 - .016)
DIMENSIONS ARE: MILLIMETERS (INCHES)
MD4XARB
"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.
JULY 2000 - REVISED FEBRUARY 2005 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.

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