PL
IA
NT
CO
M
*R
oH
S
TISP4070M3LM THRU TISP4115M3LM,
TISP4125M3LM THRU TISP4220M3LM,
TISP4240M3LM THRU TISP4400M3LM
BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS
TISP4xxxM3LM Overvoltage Protector Series
TISP4xxxM3LM Overview
This TISP® device series protects central office, access and customer premise equipment against overvoltages on the telecom line. The
TISP4xxxM3LM is available in a wide range of voltages and has a medium current capability. These protectors have been specified mindful
of the following standards and recommendations: GR-1089-CORE, FCC Part 68, UL1950, EN 60950, IEC 60950, ITU-T K.20, K.21 and K.45.
The TISP4350M3LM meets the FCC Part 68 “B” ringer voltage requirement and survives the Type B impulse tests. These devices are housed
in a through-hole DO-92 package (TO-92 package with cropped center leg).
Summary Electrical Characteristics
V(BO)
VT @ IT
VDRM
V
V
V
TISP4070M3
58
70
3
TISP4080M3
65
80
3
TISP4095M3
75
95
3
TISP4115M3
90
115
3
TISP4125M3
100
125
3
TISP4145M3
120
145
3
TISP4165M3
135
165
3
TISP4180M3
145
180
3
TISP4220M3
160
220
3
TISP4240M3
180
240
3
TISP4250M3
190
250
3
TISP4260M3
200
260
3
TISP4290M3
220
290
3
TISP4300M3
230
300
3
TISP4350M3
275
350
3
TISP4395M3
320
395
3
TISP4400M3
300
400
3
ourns' part has an improved protection voltage
Part #
IDRM
μA
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
I(BO)
mA
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
IT
A
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
IH
mA
150
150
150
150
150
150
150
150
150
150
150
150
150
150
150
150
150
Co @ -2 V
pF
120
120
120
120
65
65
65
65
65
55
55
55
55
55
55
55
55
Functionally
Replaces
P0640EA
P0720EA
P0900EA
P1100EA
ITSM
A
1 cycle 60 Hz
32
di/dt
A/μs
2/10 Wavefront
300
E
T
E
L
O
S
B
O
P1300EA
P1500EA
P1800EA
P2300EA
P2600EA
P3100EA
P3500EA
Summary Current Ratings
ITSP
A
Parameter
Waveshape
Value
2/10
300
1.2/50, 8/20
220
10/160
120
NOVEMBER 1997 - REVISED JANUARY 2010
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
5/320
100
10/560
75
10/1000
50
TISP4xxxM3LM Overvoltage Protector Series
ITU-T K.20/21 Rating ............................ 4 kV 10/700, 100 A 5/310
LM Package (Top View)
Ion-Implanted Breakdown Region
Precise and Stable Voltage
Low Voltage Overshoot under Surge
Device
‘4070
‘4080
‘4095
‘4115
‘4125
‘4145
‘4165
‘4180
‘4220
‘4240
‘4250
‘4260
‘4290
‘4300
‘4350
‘4395
‘4400
VDRM
V(BO)
V
58
65
75
90
100
120
135
145
160
180
190
200
220
230
275
320
300
V
70
80
95
115
125
145
165
180
220
240
250
260
290
300
350
395
400
T(A)
NC
R(B)
MD4XAT
NC - No internal connection on pin 2
LMF Package (LM Package with Formed Leads) (Top View)
T(A)
E
T
E
L
O
S
B
O
NC
R(B)
10/700 µs
10/560 µs
10/1000 µs
GR-1089-CORE
IEC 61000-4-5
FCC Part 68
ITU-T K.20/21
FCC Part 68
FCC Part 68
GR-1089-CORE
1
2
3
MD4XAKB
NC - No internal connection on pin 2
Device Symbol
T
Rated for International Surge Wave Shapes
ITSP
Waveshape
Standard
A
2/10 µs
8/20 µs
10/160 µs
1
2
3
R
300
220
120
SD4XAA
Terminals T and R correspond to the
alternative line designators of A and B
100
Low Differential Capacitance ...................................... 43 pF max.
75
50
................................................UL Recognized Component
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 and 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).
How to Order
Device
TISP4xxxM3LM
Package
Straight Lead DO-92 (LM)
Carrier
Order As
Bulk Pack
TISP4xxxM3LM-S
Tape and Reeled
Formed Lead DO-92 (LMF) Tape and Reeled
TISP4xxxM3LMR-S
TISP4xxxM3LMFR-S
Insert xxx value corresponding to protection voltages of 070, 080, 095, 115 etc.
NOVEMBER 1997 - REVISED JANUARY 2010
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
TISP4xxxM3LM Overvoltage Protector Series
Description
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 helps prevent
d.c. latchup as the diverted current subsides.
This TISP4xxxM3LM range consists of seventeen voltage variants to meet various maximum system voltage levels (58 V to 320 V). They are
guaranteed to voltage limit and withstand the listed international lightning surges in both polarities. These protection devices are supplied
in a DO-92 (LM) cylindrical plastic package. The TISP4xxxM3LM is a straight lead DO-92 supplied in bulk pack and on tape and reel. The
TISP4xxxM3LMF is a formed lead DO-92 supplied only on tape and reel. For higher rated impulse currents in the DO-92 package, the 100 A
10/1000 TISP4xxxH3LM series is available.
Absolute Maximum Ratings, TA = 25 °C (Unless Otherwise Noted)
E
T
E
L
O
S
B
O
Rating
Repetitive peak off-state voltage, (see Note 1)
Symbol
‘4070
‘4080
‘4095
‘4115
‘4125
‘4145
‘4165
‘4180
‘4220
‘4240
‘4250
‘4260
‘4290
‘4300
‘4350
‘4395
‘4400
Non-repetitive peak on-state pulse current (see Notes 2, 3 and 4)
2/10 µs (GR-1089-CORE, 2/10 µs voltage wave shape)
8/20 µs (IEC 61000-4-5, combination wave generator, 1.2/50 voltage, 8/20 current)
10/160 µs (FCC Part 68, 10/160 µs voltage wave shape)
5/200 µs (VDE 0433, 10/700 µs voltage wave shape)
0.2/310 µs (I 31-24, 0.5/700 µs voltage wave shape)
5/310 µs (ITU-T K.20/21, 10/700 µs voltage wave shape)
5/310 µs (FTZ R12, 10/700 µs voltage wave shape)
5/320 µs (FCC Part 68, 9/720 µs voltage wave shape)
10/560 µs (FCC Part 68, 10/560 µs voltage wave shape)
10/1000 µs (GR-1089-CORE, 10/1000 µs voltage wave shape)
Non-repetitive peak on-state current (see Notes 2, 3 and 5)
20 ms (50 Hz) full sine wave
16.7 ms (60 Hz) full sine wave
1000 s 50 Hz/60 Hz a.c.
Initial rate of rise of on-state current, Exponential current ramp, Maximum ramp value < 100 A
Junction temperature
Storage temperature range
NOTES: 1.
2.
3.
4.
5.
VDRM
ITSP
Value
± 58
± 65
± 75
± 90
±100
±120
±135
±145
±160
±180
±190
±200
±220
±230
±275
±320
±300
300
220
120
110
100
100
100
100
75
50
Unit
V
A
ITSM
30
32
2.1
A
diT/dt
TJ
Tstg
300
-40 to +150
-65 to +150
A/µs
°C
°C
See Applications Information and Figure 10 for voltage values at lower temperatures.
Initially the TISP4xxxM3LM must be in thermal equilibrium with TJ = 25 °C.
The surge may be repeated after the TISP4xxxM3LM returns to its initial conditions.
See Applications Information and Figure 11 for current ratings at other temperatures.
EIA/JESD51-2 environment and EIA/JESD51-3 PCB with standard footprint dimensions connected with 5 A rated printed wiring
track widths. See Figure 8 for the current ratings at other durations. Derate current values at -0.61 %/°C for ambient
temperatures above 25 °C
NOVEMBER 1997 - REVISED JANUARY 2010
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
TISP4xxxM3LM
TISP4xxxF3LM Overvoltage
Overvoltage Protector
Protector Series
Series
Electrical Characteristics, TA = 25 °C (Unless Otherwise Noted)
IDRM
Parameter
Repetitive peak offstate current
VD = ±V DRM
V(BO)
Breakover voltage
dv/dt = ±750 V/ms,
V(BO)
Impulse breakover
voltage
dv/dt ≤ ±1000
Linear voltage ramp,
Maximum ramp value = ±500 V
di/dt = ±20 A
Linear current ramp,
Maximum ramp value = ±10 A
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
Test Conditions
Min
TA = 25 °C
TA = 85 °C
‘4070
‘4080
‘4095
‘4115
‘4125
‘4145
‘4165
‘4180
‘4220
‘4240
‘4250
‘4260
‘4290
‘4300
‘4350
‘4395
‘4400
‘4070
‘4080
‘4095
‘4115
‘4125
‘4145
‘4165
‘4180
‘4220
‘4240
‘4250
‘4260
‘4290
‘4300
‘4350
‘4395
‘4400
E
T
E
L
O
S
B
O
RSOURCE =
dv/dt = ±750 V/ms, RSOURCE =
IT = ±5 A,t W = 100
IT = ±5 A,d i/dt = - /+ 30 m A/ms
±0.15
±0.15
Max
±5
±10
±70
±80
±95
±115
±125
±145
±165
±180
±220
±240
±250
±260
±290
±300
±350
±395
±400
±78
±88
±102
±122
±132
±151
±171
±186
±227
±247
±257
±267
±298
±308
±359
±405
±410
±0.6
±3
±0.6
±5
Linear voltage ramp, Maximum ramp value < 0.85VDRM
VD = ±50 V
Typ
TA = 85 °C
Unit
V
V
A
V
A
kV
±10
μA
NOVEMBER 1997 - REVISED JANUARY 2010
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
TISP4xxxM3LM
TISP4xxxF3LM Overvoltage Protector Series
Electrical Characteristics, TA = 25 °C (Unless Otherwise Noted) (Continued)
Parameter
Test Conditions
f = 100 kHz, Vd = 1 V rms, VD = 0,
f = 100 kHz, Vd = 1 V rms, VD = -1 V
Coff
Off-state capacitance
f = 100 kHz, Vd = 1 V rms, VD = -2 V
E
T
E
L
O
S
B
O
f = 100 kHz, Vd = 1 V rms, VD = -50 V
f = 100 kHz, Vd = 1 V rms, VD = -100 V
(see Note 6)
NOTE
Parameter
NOTE
Typ
86
60
54
80
56
50
74
52
46
36
26
20
20
16
Max
110
80
70
96
74
64
90
70
60
47
36
30
30
24
Unit
Typ
Max
Unit
pF
6: To avoid possible voltage clipping, the ‘4125 is tested with VD = -98 V.
Thermal Characteristics
R θJA
Min
4070 thru ‘4115
‘4125 thru ‘4220
‘4240 thru ‘4400
‘4070 thru ‘4115
‘4125 thru ‘4220
‘4240 thru ‘4400
‘4070 thru ‘4115
‘4125 thru ‘4220
‘4240 thru ‘4400
‘4070 thru ‘4115
‘4125 thru ‘4220
‘4240 thru ‘4400
‘4125 thru ‘4220
‘4240 thru ‘4400
Junction to free air thermal resistance
Test Conditions
Min
EIA/JESD51-3 PCB, IT = ITSM(1000),
TA = 25 °C, (see Note 7)
265 mm x 210 mm populated line card,
4-layer PCB, IT = ITSM(1000), TA = 25 °C
120
° C /W
57
7: EIA/JESD51-2 environment and PCB has standard footprint dimensions connected with 5 A rated printed wiring track widths.
NOVEMBER 1997 - REVISED JANUARY 2010
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
TISP4xxxM3LM Overvoltage Protector Series
Parameter Measurement Information
+i
Quadrant I
ITSP
Switching
Characteristic
ITSM
IT
V(BO)
VT
I(BO)
IH
VDRM
-v
IDRM
E
T
E
L
O
S
B
O
IDRM
ID
VD
ID
VD
VDRM
+v
IH
I(BO)
V(BO)
VT
IT
ITSM
Quadrant III
Switching
Characteristic
ITSP
-i
PMXXAAB
Figure 1. Voltage-current Characteristic for T and R Terminals
All Measurements are Referenced to the R Terminal
NOVEMBER 1997 - REVISED JANUARY 2010
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
TISP4xxxM3LM Overvoltage Protector Series
Typical Characteristics
OFF-STATE CURRENT
vs
JUNCTION TEMPERATURE
100
TCMAG
NORMALIZED BREAKOVER VOLTAGE
vs
JUNCTION TEMPERATURE
TC4MAF
1.10
Normalized Breakover Voltage
VD = ±50 V
|ID| - Off-State Current - µA
10
1
1.05
E
T
E
L
O
S
B
O
0·1
0·01
1.00
0.95
0·001
-25
0
25
50
75
100
TJ - Junction Temperature - °C
125
-25
150
Figure 2.
ON-STATE CURRENT
vs
ON-STATE VOLTAGE
100
50
40
30
NORMALIZED HOLDING CURRENT
vs
JUNCTION TEMPERATURE
TC4MAJA
2.0
TA = 25 °C
tW = 100 µs
10
5
4
3
2
1.5
1
0.7
'4125
THRU
'4220
'4240
THRU
'4400
TC4MAD
1.5
20
15
7
150
Figure 3.
Normalized Holding Current
IT - On-State Current - A
70
0
25
50
75
100 125
TJ - Junction Temperature - °C
'4070
THRU
'4115
1.0
0.9
0.8
0.7
0.6
0.5
0.4
1
1.5
2
31 4 5
VT - On-State Voltage - V
7
Figure 4.
NOVEMBER 1997 - REVISED JANUARY 2010
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
0
-25
0
25
50
75
100 125
TJ - Junction Temperature - °C
Figure 5.
150
TISP4xxxM3LM Overvoltage Protector Series
Typical Characteristics
Capacitance Normalized to V D = 0
0.7
0.6
0.5
'4125 THRU '4220
0.3
'4240 THRU '4400
0.2
0.5
'4145
'4165
'4180
'4125
45
E
T
E
L
O
S
B
O
'4070 THRU '4115
0.4
'4115
TJ = 25 °C
Vd = 1 Vrms
0.8
'4095
0.9
TC4MALB
50
'4220
'4240
'4250
'4260
'4290
'4300
'4350
'4395
'4400
TC4MAKA
'4070
'4080
1
DIFFERENTIAL OFF-STATE CAPACITANCE
vs
RATED REPETITIVE PEAK OFF-STATE VOLTAGE
C - Differential Off-State Capacitance - pF
NORMALIZED CAPACITANCE
vs
OFF-STATE VOLTAGE
40
C = Coff(-2 V) - Coff(-50 V)
35
30
25
1
2
3
5
10
20 30
VD - Off-state Voltage - V
Figure 6.
50
100150
50
60 70 80 90100
150
200 250 300
VDRM - Repetitive Peak Off-State Voltage - V
Figure 7.
NOVEMBER 1997 - REVISED JANUARY 2010
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
TISP4xxxM3LM Overvoltage Protector Series
Rating and Thermal Information
THERMAL IMPEDANCE
vs
POWER DURATION
30
150
VGEN = 600 Vrms, 50/60 Hz
ZθJA(t) - Transient Thermal Impedance - °C/W
ITSM(t) - Non-Repetitive Peak On-State Current - A
NON-REPETITIVE PEAK ON-STATE CURRENT
vs
CURRENT DURATION
RGEN = 1.4*VGEN/ITSM(t)
20
EIA/JESD51-2 ENVIRONMENT
EIA/JESD51-3 PCB
TA = 25 °C
15
10
9
8
7
6
5
3
2
1.5
0·1
100
90
80
70
60
50
40
E
T
E
L
O
S
B
O
4
1
10
100
1000
30
20
15
10
9
8
7
6
5
4
0·1
t - Current Duration - s
ITSM(t) APPLIED FOR TIME t
EIA/JESD51-2 ENVIRONMENT
EIA/JESD51-3 PCB
TA = 25 °C
1
10
100
1000
t - Power Duration - s
Figure 8.
1.00
TI4MAG
Figure 9.
VDRM DERATING FACTOR
vs
MINIMUM AMBIENT TEMPERATURE TI4MAHA
400
IMPULSE RATING
vs
AMBIENT TEMPERATURE
TC4MAA
BELLCORE 2/10
300
0.99
250
'4125 THRU '4220
Impulse Current - A
Derating Factor
0.98
0.97
0.96
0.95
'4070 THRU '4115
IEC 1.2/50, 8/20
200
150
FCC 10/160
120
100
90
80
70
ITU-T 10/700
FCC 10/560
60
0.94
'4240 THRU '4400
50
BELLCORE 10/1000
0.93
-40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25
TAMIN - Minimum Ambient Temperature - °C
Figure 10.
NOVEMBER 1997 - REVISED JANUARY 2010
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
40
-40 -30 -20 -10 0
10 20 30 40 50 60 70 80
TA - Ambient Temperature - °C
Figure 11.
TISP4xxxM3LM Overvoltage Protector Series
APPLICATIONS INFORMATION
Deployment
These devices are two terminal overvoltage protectors. They may be used either singly to limit the voltage between two conductors
(Figure 12) or in multiples to limit the voltage at several points in a circuit (Figure 13).
Th3
Th1
Th1
Th2
E
T
E
L
O
S
B
O
Figure 12. Two Point Protection
Figure 13. Multi-point Protection
In Figure 12, protector Th1 limits the maximum voltage between the two conductors to ±V(BO). This configuration is normally used to
protect circuits without a ground reference, such as modems. In Figure 13, protectors Th2 and Th3 limit the maximum voltage between each
conductor and ground to the ±V(BO) of the individual protector. Protector Th1 limits the maximum voltage between the two conductors to its
±V(BO) value. If the equipment being protected has all its vulnerable components connected between the conductors and ground, then
protector Th1 is not required.
Impulse Testing
To verify the withstand capability and safety of the equipment, standards require that the equipment is tested with various impulse wave
forms. The table below shows some common values.
Standard
Peak Voltage
Setting
V
Voltage
Waveform
Peak Current
Value
A
Current
Waveform
TISP4xxxM3
25 C Rating
A
Series
Resistance
2500
2/10
500
2/10
300
11
1000
10/1000
100
10/1000
50
1500
10/160
200
10/160
120
2x5.6
800
10/560
100
10/560
75
3
FCC Part 68
(March 1998)
1500
9/720
37.5
5/320
100
0
1000
9/720
25
5/320
100
0
I3124
1500
0.5/700
37.5
0.2/310
100
0
37.5
1500
5/310
100
0
ITU-T K.20/K.21
10/700
100
4000
FCC Part 68 terminology for the waveforms produced by the ITU-T recommendation K.21 10/700 impulse generator
GR-1089-CORE
If the impulse generator current exceeds the protector’s current rating, then a series resistance can be used to reduce the current to the
protector’s rated value to prevent possible failure. The required value of series resistance for a given waveform is given by the following
calculations. First, the minimum total circuit impedance is found by dividing the impulse generator’s peak voltage by the protector’s rated
current. The impulse generator’s fictive impedance (generator’s peak voltage divided by peak short circuit current) is then subtracted from the
minimum total circuit impedance to give the required value of series resistance.
For the FCC Part 68 10/560 waveform the following values result. The minimum total circuit impedance is 800/75 = 10.7 Ω and the generator’s fictive impedance is 800/100 = 8 Ω. This gives a minimum series resistance value of 10.7 - 8 = 2.7 Ω. After allowing for tolerance, a 3
Ω ±10% resistor would be suitable. The 10/160 waveform needs a standard resistor value of 5.6 Ω per conductor. These would be R1a and
R1b in Figure 15 and Figure 16. FCC Part 68 allows the equipment to be non-operational after the 10/160 (conductor to ground) and 10/560
(inter-conductor) impulses. The series resistor value may be reduced to zero to pass FCC Part 68 in a non-operational mode, e.g. Figure 14.
For this type of design, the series fuse must open before the TISP4xxxM3 fails. For Figure 14, the maximum fuse i2t is 2.3 A2s. In some cases,
the equipment will require verification over a temperature range. By using the rated waveform values from Figure 11, the appropriate series
resistor value can be calculated for ambient temperatures in the range of -40 °C to 85 °C.
NOVEMBER 1997 - REVISED JANUARY 2010
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
TISP4xxxM3LM Overvoltage Protector Series
APPLICATIONS INFORMATION
AC Power Testing
The protector can withstand currents applied for times not exceeding those shown in Figure 8. Currents that exceed these times must be
terminated or reduced to avoid protector failure. Fuses, PTC (Positive Temperature Coefficient) resistors and fusible resistors are overcurrent
protection devices which can be used to reduce the current flow. Protective fuses may range from a few hundred milliamperes to one a
mpere. In some cases, it may be necessary to add some extra series resistance to prevent the fuse from opening during impulse testing. The
current versus time characteristic of the overcurrent protector must be below the line shown in Figure 8. In some cases there may be a further
time limit imposed by the test standard (e.g. UL 1459 wiring simulator failure).
Capacitance
E
T
E
L
O
S
B
O
The protector characteristic off-state capacitance values are given for d.c. bias voltage, VD, values of 0, -1 V, -2 V and -50 V. Where possible,
values are also given for -100 V. Values for other voltages may be calculated by multiplying the VD = 0 capacitance value by the factor given
in Figure 6. Up to 10 MHz, the capacitance is essentially independent of frequency. Above 10 MHz, the effective capacitance is strongly
dependent on connection inductance. In many applications, such as Figure 15 and Figure 17, the typical conductor bias voltages will be
about -2 V and -50 V. Figure 7 shows the differential (line unbalance) capacitance caused by biasing one protector at -2 V and the other at
-50 V.
Normal System Voltage Levels
The protector should not clip or limit the voltages that occur in normal system operation. For unusual conditions, such as ringing without the
line connected, some degree of clipping is permissible. Under this condition, about 10 V of clipping is normally possible without activating
the ring trip circuit.
Figure 10 allows the calculation of the protector VDRM value at temperatures below 25 °C. The calculated value should not be less than the
maximum normal system voltages. The TISP4260M3LM, with a VDRM of 200 V, can be used for the protection of ring generators producing
100 V rms of ring on a battery voltage of -58 V (Th2 and Th3 in Figure 17). The peak ring voltage will be 58 + 1.414*100 = 199.4 V. However,
this is the open circuit voltage and the connection of the line and its equipment will reduce the peak voltage. In the extreme case of an
unconnected line, clipping the peak voltage to 190 V should not activate the ring trip. This level of clipping would occur at the temperature
when the VDRM has reduced to 190/200 = 0.95 of its 25 °C value. Figure 10 shows that this condition will occur at an ambient temperature of
-28 °C. In this example, the TISP4260M3LM will allow normal equipment operation provided that the minimum expected ambient temperature does not fall below -28 °C.
JESD51 Thermal Measurement Method
To standardize thermal measurements, the EIA (Electronic Industries Alliance) has created the JESD51 standard. Part 2 of the standard
(JESD51-2, 1995) describes the test environment. This is a 0.0283 m3 (1 ft3) cube which contains the test PCB (Printed Circuit Board)
horizontally mounted at the center. Part 3 of the standard (JESD51-3, 1996) defines two test PCBs for surface mount components; one for
packages smaller than 27 mm (1.06 ’’) on a side and the other for packages up to 48 mm (1.89 ’’). The LM package measurements used the
smaller 76.2 mm x 114.3 mm (3.0 ’’ x 4.5 ’’) PCB. The JESD51-3 PCBs are designed to have low effective thermal conductivity (high thermal
resistance) and represent a worse case condition. The PCBs used in the majority of applications will achieve lower values of thermal resistance and so can dissipate higher power levels than indicated by the JESD51 values.
NOVEMBER 1997 - REVISED JANUARY 2010
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
TISP4xxxM3LM Overvoltage Protector Series
Typical Circuits
TIP
WIRE
MODEM
FUSE
TIP
WIRE
R1a
RING DETECTOR
Th3
HOOK SWITCH
TISP4350
OR
TISP4400
RING
WIRE
PROTECTED
EQUIPMENT
Th1
D.C. SINK
Th2
SIGNAL
AI6XBM
E.G. L INE CARD
R1b
RING
WIRE
AI6XBK
E
T
E
L
O
S
B
O
Figure 14. MODEM Inter-wire Protection
Figure 15. Protection Module
R1a
Th3
SIGNAL
Th1
Th2
R1b
AI6XBL
D.C.
Figure 16. ISDN Protection
OVERCURRENT
PROTECTION
TIP
WIRE
RING/TEST
PROTECTION
TEST
RELAY
RING
RELAY
SLIC
RELAY
S3a
R1a
Th3
S1a
SLIC
PROTECTION
Th4
S2a
SLIC
Th1
Th2
RING
WIRE
Th5
R1b
S3b
S1b
S2b
TISP6xxxx,
TISPPBLx,
1/2TISP6NTP2
C1
220 nF
TEST
EQUIPMENT
RING
GENERATOR
VBAT
AI6XBJ
Figure 17. Line Card Ring/Test Protection
NOVEMBER 1997 - REVISED JANUARY 2010
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
TISP4xxxM3LM Overvoltage Protector Series
MECHANICAL DATA
Device Symbolization Code
Devices will be coded as below.
Device
TISP4070M3LM
TISP4080M3LM
TISP4095M3LM
TISP4115M3LM
TISP4125M3LM
TISP4145M3LM
TISP4165M3LM
TISP4180M3LM
TISP4220M3LM
TISP4240M3LM
TISP4250M3LM
TISP4260M3LM
TISP4290M3LM
TISP4300M3LM
TISP4350M3LM
TISP4395M3LM
TISP4400M3LM
Carrier Information
Symbolization
Code
4070M3
4080M3
4095M3
4115M3
4125M3
4145M3
4165M3
4180M3
4220M3
4240M3
4250M3
4260M3
4290M3
4300M3
4350M3
4395M3
4400M3
E
T
E
L
O
S
B
O
Devices are shipped in one of the carriers below. A reel contains 2000 devices.
Package Type
Straight Lead DO-92
Straight Lead DO-92
Formed Lead DO-92
Carrier
Bulk Pack
Tape and Reeled
Tape and Reeled
Order As
TISP4xxxM3LM-S
TISP4xxxM3LMR-S
TISP4xxxM3LMFR-S
“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.
NOVEMBER 1997 - REVISED JANUARY 2010
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.