TISP4350L3BJR Bourns Inc., TISP4350L3BJR Datasheet - Page 6

• Manufacturer Part Number: TISP4350L3BJR
• Description: SURGE SUPP 275V BIDIR DO-214AA
• Manufacturer: Bourns Inc.

Specifications of TISP4350L3BJR

• Package / Case: DO-214AA, SMB
• Voltage - Breakover: 350V
• Voltage - Off State: 275V
• Voltage - On State: 3V
• Current - Hold (ih): 120mA
• Number Of Elements: 1
• Capacitance: 30pF
• Breakover Current Ibo Max: 13 A
• Rated Repetitive Off-state Voltage Vdrm: 275 V
• Off-state Leakage Current @ Vdrm Idrm: 0.005 mA
• Forward Voltage Drop: 3 V
• Mounting Style: SMD/SMT
• Current - Peak Pulse (8 X 20µs): -
• Current - Peak Pulse (10 X 1000µs): -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AUGUST 1999 - REVISED JANUARY 2007
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
From 2001, the registrations for FCC equipment changed from the FCC to ACTA, Administrative Council for Terminal Attachments. For this
function, ACTA needed to adopt a US National standard specifying terminal equipment requirements. The TIA, Telecommunications Industry
Association, in conjunction with the EIA, Electronic Industries Alliance, created TIA/EIA-IS-968 for this purpose. The first issue of TIA/EIA-IS-968
is essentially a renumbered version of the FCC Part 68 requirement. Clause and figure changes are shown in the table.
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 values for the TIA/EIA-IS-968 and ITU-T recommendation K.21.
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 wave form 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 TIA/EIA-IS-968 10/560 wave form the following values result. The minimum total circuit impedance is 800/30 = 26.7 Ω and the
generator’s fictive impedance is 800/100 = 8 Ω. For an inter-conductor connected TISP4xxxL3, this gives a minimum series resistance value of
26.7 - 8 = 18.7 Ω. After allowing for tolerance, a 20 Ω ±5 % resistor would be suitable. The 10/160 wave form only needs to be considered if
the TISP4350L3 is connected from the conductor to ground. In this case, the conductor series resistance is 24 Ω ±5 % per conductor.
These electrical safety standards for IT (Information Technology) equipment at the customer premise use the IEC (International Electro-
technical Commission) 60950 standard as the core document. The IEC 60950 covers fundamental safety criteria such as creepage and
isolation. The connection to a telecommunication network voltage (TNV) is covered in clause 6.
Europe is harmonized by CENELEC (Comité Européen de Normalization Electro-technique) under EN 60950 (included in the Low Voltage
Directive, CE mark). Up to the end of 2000, the US had UL (Underwriters Laboratories) 1950 and Canada CSA (Canadian Standards Authority)
C22.2 No. 950. The US and Canadian standards include regional changes and additions to the IEC 60950. A major addition is the inclusion of
clause 6.6, power cross withstand containing the flowchart Figure 18b and annex NAC covering testing. Remarks made for UL 1950 will
generally be true for CSA 22.2 No. 950.
FCC Part 68, ACTA, TIA and EIA
TIA/EIA-IS-968 (FCC Part 68) Impulse Testing
TIA/EIA-IS-968
ITU-T K.21 ‡
Basic Level
ITU-T K.21 ‡
Enhanced Level
† TIA/EIA-IS-968 terminology for the wave forms produced by the ITU-T recommendation K.21 10/700 impulse generator
‡ Values assume the TISP4xxxL3 is connected inter-conductor and a 400 V primary is used
IEC 60950, UL 1950/60950, CSA C22.2 No. 950/60950 and EN 60950
(F CC Part 68)
Standard
TISP4xxxL3BJ Overvoltage Protector Series
Longitudinal
Longitudinal
Transverse
Transverse
Condition
Metallic
Metallic
Test
V
Telephone Line Surge – Type A
Telephone Line Surge – Type B
Simplified Surge Generator
Open Circuit voltage Wave shape
Short Circuit Current Wave shape
Voltage
Peak
1500
1500
1000
1500
4000
1500
6000
800
V
Wave Form
Item
9/720 †
Voltage
9/720 †
10/700
10/700
10/160
10/560
APPLICATIONS INFORMATION
µs
Current
Peak
37.5
37.5
37.5
200
100
100
125
25
A
Clause 68.302 (c)
Clause 68.302 (b)
Fig. 68.302 (b)
Fig. 68.302 (c)
Fig. 68.302 (a)
FCC Part 68
Wave Form
Current
5/320 †
5/320 †
10/160
10/560
5/310
5/310
µs
Impedance
TIA/EIA-IS-968
Clause 4.2.3
Fictive
Clause 4.2.2
Figure 4.2
Figure 4.3
Figure 4.1
7.5
40
40
40
40
Ω
8
TISP4xxxL3
Rating
50
40
30
30
30
40
A
Resista nce
2 x 24
Series
19
10
10
0
0
0
0
Ω