Bourns TBU. High-Speed Protectors Short Form Brochure
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1 Bourns TBU High-Speed Protectors Short Form Brochure
2 Bourns TBU Product Overview Basic TBU Device Operation Bourns TBU high-speed protectors are circuit protection devices constructed using MOSFET semiconductor technology. When placed in series in the system, the TBU protector monitors the current flowing through the line. If the current exceeds a preset level, the TBU device triggers, providing an effective barrier to large, destructive voltages or currents during surge events, thereby protecting sensitive electronics. The TBU device operates in approximately μs - once line current exceeds the TBU device s trigger current. When operated, the TBU device restricts line current to less than ma typically, and blocks voltages including the surge up to rated limits. After the surge, the TBU automatically resets itself when the voltage across the TBU device falls to the V reset or below. Therefore, the TBU device will automatically reset on lines which have no DC bias or have DC bias below V reset (such as unpowered signal lines). If the line has a normal DC bias above V reset, the voltage across the TBU device may not fall below V reset after the surge. In such cases, special care needs to be taken to ensure that the TBU device will reset; software monitoring may be used to accomplish this task. Bourns application engineers can provide further assistance. Key Features: TBU device is used in series with the line TBU device is triggered by current rise TBU device can block voltages up to 850 V, enabling easy coordination TBU device provides superior protection in less than µs TBU device resets on voltage TBU device offers an extremely low capacitance per line Key Benefits: High-speed performance Blocks voltages and currents Extremely low let-through energy of 00 nj Self-resetting on non-dc biased lines Very high bandwidth up to 3 GHz Small size in DFN package TBU-PL & TBU-PK series offer voltage triggering Smallest PCB area Ultra low profile TBU-VI Curve Reset Voltage Threshold I I OP /R Forward Trigger Current Reset Voltage Threshold Residual Reset Current V TBU-based Solution Device Selection Step : Current characterization: Determine the peak system operating current and maximum operating ambient temperature. Use the TBU device data sheet s trigger current versus temperature derating curve to determine the TBU device derating value. Step 2: Overvoltage selection: Select an overvoltage device that has the lowest available DC breakdown voltage greater than the normal system voltages and any expected AC power faults. The selected device must also be capable of handling the required lightning current. Step 3: TBU device selection: Choose a TBU device with a maximum impulse voltage ( ) greater than the maximum impulse breakover or clamping voltage of the selected overvoltage protector. The selected TBU device must also have a minimum specified above the maximum peak system operating current compensating for the temperature derating. Step 4: Tertiary protection: In most applications, the protected circuit sources sufficient current to trigger the TBU device. If the protected circuit impedance is high, a small avalanche diode to ground or small signal diodes clamping to the power supply rails may be placed after the TBU device. This will ensure that the TBU device triggers, preventing the voltage at the interface from rising to unsafe levels. Reverse Trigger Current -I OP 2
3 Bourns TBU Product Examples VOICE GND -VBAT VDSL Line SLIC Line 2 SLIC TBU TBU-PL WH Line Line 2 Review VOICE Protection Solution Selection Guide to select TBU and overvoltage part numbers to meet protection industry standard. VDSL Driver Ca 203-5T-SM VOICE Protection Solution Selection Guide Industry Standard Telcordia GR-089-CORE Intra-building Port Type 4 Telcordia GR-089-CORE Intra-building Port Type 4a Non-GR-089-CORE Intrabuilding Specifications ITU-T Basic K.20, K.2, K.45 Surge & AC Withstand 500 V, 00 A 2/0 µs 20, 25 A, 900 s 000 V, 00 A 0/000 µs 20, 25 A, 900 s 5000 V, 500 A 2/0 µs 230, 25 A, 900 s 500 V, 00 A 2/0 µs 275, 25 A, 900 s 4000 V, 40 Ω 0/700 µs Ω Ω, 900 s Ω, 0.2 s 4000 V, 40 Ω 0/700 µs Ω -000 Ω, 900 s Ω, 0. s Bourns TBU Device Selection TBU Device Part Qty OVP Device Part Qty TBU-PL WH MOV-07D20K 2 TBU-PL WH 2 TBU-PL WH MOV-0D36K 2 TBU-PL WH MOV-0D43K 2 TBU-PL WH MOV-0D36K 2 TBU-PL WH TISP4400M3BJ 2 TBU-CA WH Cb ITU-T Enhanced K.20, K.2, K V, 40 Ω 0/700 µs Ω Ω, 900 s Ω, 0.2 s Ω, s* 500, 200 Ω, 2 s* TBU-PL WH MOV-0D39K 2 T/E Interface TTIP Ta Transformer TBU.25 A Fuse Tx Tip 6000 V, 40 Ω 0/700 µs Ω Ω, 900 s Ω, s 500, 200 Ω, 2 s TBU-PL WH TISP4500H3BJ 2 T/E TRING Physical Line Interface Unit RTIP RRING Tb CM Transformer P850-U TBU P850-U T-SM Fuse.25 A.25 A Fuse T-SM Fuse.25 A Tx Ring Rx Tip Rx Ring * GDT Special Test Protector with DC breakdown (DCBD) of less than 330 V. Notes: ) The Le9500, Le9520 and Le9530 (VE950 series) require a 200 ma TBU device for normal operation. Other SLIC types should use the 00 ma device. 2) The MOV maximum continuous rms voltage rating should not be exceeded. The exception is where the data sheet highlights withstand capability such as the 600, A for 0.2 s, for example. 3) If EN55024 EMC compliance is required, the TBU device may require capacitors to be fitted between the Tip and Ring connections and ground (i.e. in parallel with the MOV device). The capacitance value can be chosen to meet levels as follows: 0 nf for EN55024 Level 20 nf for EN55024 Level 2 47 nf for EN55024 Level 3 Selection of capacitor voltage rating depends upon TBU part number selection. Recommendations include: TBU-PL050 & TBU-PL060 Series: 20 VAC, 500 V Peak Surge Rated TBU-PL075 & TBU-PL085 Series: 240 VAC, 750 V Peak Surge Rated Depending upon the SLIC type, it is usually possible to remove any EMI capacitors present between the output of the SLIC and ground when using capacitors C and C2 in parallel with the MOVs. 3
4 Bourns TBU Product Examples RS232 Interface RS485 Interface TBU-CA WH CDSOT23-SM72 RS232 TBU-CA WH SMBJ26CA T-SM RS485 RS422 Interface CANBUS RS422 SMBJ2CA TBU-CA WH CANBUS SMBJ2CA TBU-CA WH T-SM Diode voltage dependent on CANbus driver resistibility. Typically 6-20 V, check specification. Intelligent Transport System Intrinsically Safe Sensor Composite Video 75 Ω TBU-CA WH T-SM 75 Ω Coax Line TBU-CA WH 500 Ω SMAJ26A Equipment Microwave Link Video Surveillance TBU-CA WH HV LP Filter 203-5T-SM SDI TBU-CA WH CDSOD323-T05LC T-SM IF TX/RX DC or AC Power Protection for higher power split mounted IF feed equipment 4
5 Bidirectional Dual TBU Protectors TBU-PL, TBU-PK & P40 Product Families Part Maximum Ratings Min. Operating Characteristics Max. (µs) (Ω) Device Size (mm) Form Factor P40-G240-WH x 4.00 TBU-PL WH TBU-PL WH TBU-PL WH TBU-PL WH TBU-PL WH TBU-PL WH TBU-PL WH TBU-PL WH TBU-PK WH TBU-PK WH TBU-PK WH x x 4.00 L50 C954 K50 C959 Maximum peak impulse voltage withstand with duration less than 0 ms. Maximum continuous alternating current RMS voltage. Minimum and maximum current required for the device to go from operating state to protected state. Maximum time for the device to go from normal operating state to protected state. Typical series resistance of the TBU device. Consult factory for alternate specification values. See data sheet for detailed specifications. TBU Lightning Surge Protection TBU Power Fault Protection V/div. 200 ma/div V/div. 200 ma/div. 2 µs/div. 4 ms/div. Ch V Ch2 V2 Ch3 Current Ch V Ch2 V2 Ch3 Current 5
6 Bidirectional Single TBU Protectors TBU-CA & TBU-CX Product Families Part Maximum Ratings Min. Operating Characteristics Max. (µs) TBU-CA WH TBU-CA WH TBU-CA WH TBU-CA WH TBU-CA WH TBU-CA WH TBU-CA WH TBU-CA WH TBU-CA WH TBU-CA WH TBU-CA WH TBU-CA WH TBU-CA WH TBU-CA WH TBU-CA WH TBU-CA WH TBU-CA WH TBU-CA WH TBU-CA WH TBU-CA WH TBU-CA WH TBU-CA WH TBU-CA WH TBU-CA WH TBU-CA WH TBU-CX025-VTC-WH TBU-CX040-VTC-WH TBU-CX050-VTC-WH TBU-CX065-VTC-WH TBU-CX085-VTC-WH (Ω) Device Size (mm) 6.50 x x 4.00 Form Factor A5050 E075 CX
7 Unidirectional Single TBU Protectors TBU-KE Product Family Part Maximum Ratings Min. Operating Characteristics Max. (µs) TBU-KE WH TBU-KE WH TBU-KE WH TBU-KE WH TBU-KE WH TBU-KE WH TBU-KE WH TBU-KE WH TBU-KE WH TBU-KE WH TBU-KE WH TBU-KE WH TBU-KE WH TBU-KE WH TBU-KE WH (Ω) Device Size (mm) 5.00 x 2.50 Form Factor E Unidirectional Dual TBU Protectors TBU-DT Product Family Part Maximum Ratings Min. Operating Characteristics Max. (µs) TBU-DT WH TBU-DT WH TBU-DT WH TBU-DT WH TBU-DT WH TBU-DT WH TBU-DT WH TBU-DT WH (Ω) Device Size (mm) 5.00 x 5.00 Form Factor T
8 Worldwide Sales Offices Country Phone Fax Americas: Brazil: China: Europe: +4 (0) (0) Japan: Singapore: Taiwan: Other Asia-Pacific Countries: Technical Assistance Region Phone Fax Asia-Pacific: Europe, Middle East, Africa: +4 (0) (0) Americas: Bourns products are available through an extensive network of manufacturer s representatives, agents and distributors. To obtain technical applications assistance, a quotation, or to place an order, contact a Bourns representative in your area. Specifications subject to change without notice. Actual performance in specific customer applications may differ due to the influence of other variables. Customers should verify actual device performance in their specific applications. TBU is a registered trademark of Bourns, Inc. in the U.S., Taiwan and European Community. Bourns is a registered trademark of Bourns, Inc. in the U.S. and other countries. COPYRIGHT 202, BOURNS, INC. WAG 3/2 5M/FU206
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Low Capacitance RClamp 4-Line ESD Protection PROTECTION PRODUCTS Description RailClamp TVS arrays are ultra low capacitance ESD protection devices designed to protect high speed data interfaces. This series
NUP8011MUTAG. Transient Voltage Suppressors
NUP0MU Transient Voltage Suppressors ESD Protection Diodes with Low Clamping Voltage Array This integrated transient voltage suppressor device (TVS) is designed for applications requiring transient overvoltage
MIC2544A/2548A. General Description. Features. Applications. Typical Application. Programmable Current Limit High-Side Switch
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Series AMEL10-MJZ 10 Watt AC-DC / DC-DC Converter
Click on Series name for product info on aimtec.com Models Single output Model Input Voltage (VAC/Hz) FEATURES: Input Voltage (VDC) Max Output wattage (W) Output Voltage (V) Output Current max (A) Maximum
PAM04DF ULTRA LOW CAPACITANCE STEERING DIODE/TVS ARRAY DESCRIPTION DFN-10 PACKAGE FEATURES APPLICATIONS MECHANICAL CHARACTERISTICS
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Headset/Speaker EMI Filter with ESD Protection CM1416/D. Features. Product Description. Applications. ±30kV ESD protection on each channel per
Headset/Speaker EMI Filter with ESD Protection CM1416 Features Functionally and pin compatible with the CSPEMI201A and CM1411 OptiGuard coated for improved reliability at assembly Two channels of EMI filtering
RClamp0504F RailClamp Low Capacitance TVS Array
- RailClamp Description RailClamps are surge rated diode arrays designed to protect high speed data interfaces. This series has been specifically designed to protect sensitive components which are connected
Country/Region Phone Fax Technical Assistance Region Phone Fax
Short Form Brochure Introduction Bourns supplies components used in the design and assembly of professional lighting equipment. With a commitment to excellence and technology, Bourns has established a
RClamp0504FA RailClamp Low Capacitance TVS Array
- RailClamp Description RailClamp low capacitance TVS array designed to protect high speed data interfaces. This series has been specifically designed to protect sensitive components which are connected
Electrostatic Discharged Protection Devices (ESD) Data Sheet
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CM DE. 4-Channel LCD and Camera EMI Filter Array with ESD Protection
CM1408-04DE 4-Channel LCD and Camera EMI Filter Array with ESD Protection Features Four Channels of EMI Filtering with Integrated ESD Protection Pi Style EMI Filters in a Capacitor Resistor Capacitor (C
PT SERIES SIP Package
FEATURES Industry Standard SIP 8 Package 3 Watts Isolated Output 2:1 Input Range Regulated Outputs Up to 86 % Efficiency -40 C to +85 operating temperature range Remote On/Off logic control Continuous
AZC099-04S 4 IEC (ESD)
Features ESD Protect for 4 high-speed I/O channels Provide ESD protection for each channel to IEC 000-4- (ESD) ±kv (air), ±8kV (contact) IEC 000-4-4 (EFT) (/0ns) Level-3, 0A for I/O, 40A for Power IEC
PLR0514LC ULTRA LOW CAPACITANCE STEERING DIODE/TVS ARRAY DESCRIPTION DFN-10 PACKAGE FEATURES APPLICATIONS MECHANICAL CHARACTERISTICS PIN CONFIGURATION
ULTRA LOW CAPACITANCE STEERING DIODE/TVS ARRAY DESCRIPTION The is an ultra low capacitance, 4-channel steering diode/tvs array. This device is designed to protect computing applications such as Gigabit
SRV05-4MR6. Transient Voltage Suppressors. ESD Protection Diodes with Low Clamping Voltage LOW CAPACITANCE TVS ARRAY 300 WATTS PEAK POWER 6 VOLTS
SRV0-4MR Transient Voltage Suppressors ESD Protection Diodes with Low Clamping Voltage The SRV0 4MR transient voltage suppressor is designed to protect high speed data lines from ESD, EFT, and lighting.
AIC1520. Ferrite Bead GND. *33µF, 16V Tantalum, or 100µF, 10V Electrolytic Bold line indicate high-current traces. USB High-Side Power Switch
USB High-Side Power Switch FEATURES 120mΩ (5V Input) High-Side MOSFET Switch. 500mA Continuous Load Current. 80µA Typical On-State Supply Current. Current-Limit / Short Circuit Protection. Thermal Limiting
PMMAD Series ULTRA LOW CAPACITANCE MULTI-LINE STEERING DIODE ARRAY DESCRIPTION SO-14 PACKAGE APPLICATIONS FEATURES MECHANICAL CHARACTERISTICS
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CUS150M1 Instruction Manual
BEFORE USING THE POWER SUPPLY UNIT Be sure to read this instruction manual thoroughly before using this product. Pay attention to all cautions and warnings before using this product. Incorrect usage could
MIC2546/2547. Features. General Description. Applications. Typical Application. Dual Programable Current Limit Switch
Dual Programable Current Limit Switch General Description The MIC2546 and MIC2547 are integrated high-side dual power switches optimized for low loss dc power switching and other power management applications,
1 V/ms V typ. Track input voltage: Pin 8 (See Note 6 & 7, page 3) ± 0.3 Vin
PTH00 5 Vin of 5 Total Power: 54 Watts # of Outputs: Single Special Features 5 A output current 5 V input voltage Wide-output voltage adjust 0.8 Vdc to 3. Vdc Auto-track sequencing* Margin up/down controls
CM1621. LCD and Camera EMI Filter Array with ESD Protection
LCD and Camera EMI Filter Array with ESD Protection Features Six Channels of EMI Filtering with Integrated ESD Protection Pi Style EMI Filters in a Capacitor Resistor Capacitor (C R C) Network ±15 kv ESD
BOURNS THYRISTOR SURGE PROTECTOR PRODUCTS SMB (DO-214AA)
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