Datasheet TBU-RS (Bourns)
| Manufacturer | Bourns |
| Description | TBU-RSxxx-300-WH - TBU High-Speed Protector |
| Pages / Page | 9 / 1 — Features. Applications. TBU-RSxxx-300-WH - TBU® High-Speed Protector. … |
| File Format / Size | PDF / 682 Kb |
| Document Language | English |
Features. Applications. TBU-RSxxx-300-WH - TBU® High-Speed Protector. General Information. Functional Block Diagram. LINE
Model Line for this Datasheet
Text Version of Document
Features Applications
n Dual channel protector for RS-485 interfaces n RS-485 interface surge protection n Aids compliance to IEC 61000-4-2 (ESD), n AISG (Antenna Interface Standards Group) IEC 61000-4-4 (EFT) and IEC 61000-4-5 modem protection (Surge) standards R8530 92700 n Fast protection response time (1 µs) n RoHS compliant*
TBU-RSxxx-300-WH - TBU® High-Speed Protector General Information Functional Block Diagram
Bourns® Model TBU-RSxxx-300-WH Series is an integrated dual channel Transient Blocking Unit (TBU) overcurrent device and TVS overvoltage Pin Pin 7 5 protector for the RS-485 communications interface. When coupled with an Media B Transceiver B overvoltage protector like the Bourns® GDT (Model 2030-42T-SM-RPLF) or (MB) (TB) TISP® Thyristor Surge Protector (Model TISP4350J3BJR-S), the integrated Pin4 solution aids compliance to IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT) and
LINE TBU® Device
GND
PHY
IEC 61000-4-5 (Surge) standards (see Application section). Apart from a reduction in the number of components used, there is also a savings of Pin Pin 1 3 52 % in board space when compared to a discrete solution. Media A Transceiver A (MA) (TA) The Model TBU-RSxxx-300-WH Series is available in a DFN package and meets industry standards such as RoHS and Pb-free solder reflow profiles.
Absolute Maximum Ratings (@ TA = 25 °C Unless Otherwise Noted) Symbol Parameter Part Number Value Unit
V +/- MA to TA or +/- MB to TB; TBU-RS055-300-WH 550 imp Peak impulse voltage withstand with duration less than 10 ms TBU-RS085-300-WH 850 V V +/- MA to TA or +/- MB to TB with GND floating; TBU-RS055-300-WH 250 rms Continuous A.C. RMS voltage TBU-RS085-300-WH 425 V Top Operating temperature range -55 to +125 °C Tamax Maximum ambient temperature +125 °C ESD ESD protection per IEC 61000-4-2 - Contact discharge ±2 kV VWM Maximum working voltage (Line to PHY or reverse) 12 or -7 V
Electrical Characteristics (@ TA = 25 °C Unless Otherwise Noted) Symbol Pin Configuration Description Part Number Min. Typ. Max. Unit
Itrigger Current required for the device to go from operating state to protected state 300 450 600 mA V Voltage below which the triggered TBU® device will transition to normal reset operating state 12 16 20 V Line to PHY IQ or Current through the triggered TBU® device with 50 Vdc voltage 0.5 mA Reverse R 6 10 14 device On resistance of the TBU® device TBU-RS055-300-WH TBU-RS085-300-WH 15 21.5 26 Ω tblock Time for the device to go from normal operating state to protected state 1 µs VBR Minimum breakdown voltage @ 1 mA 13.3 -7.5 V I 1 D Leakage current @ VWM 20 µA PHY TA/B Vc to GND Maximum clamping voltage @ 1 A 19 -11 V V or c Maximum clamping voltage @ 5 A (8/20 pulse) 20 Reverse -12 V Vc Maximum clamping voltage @ 17 A (8/20 pulse) 26 -14 V C Typical Junction Capacitance, D VOSC = 30 mV, Vbias = 0 V, Osc. Frequency = 1 MHz 95 pF
Environmental Specifications WARNING Cancer and Reproductive Harm
www.P65Warnings.ca.gov Moisture Sensitivity Level ..1 *RoHS Directive 2015/863, Mar 31, 2015 and Annex. ESD Classification (HBM)..2 Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
n Dual channel protector for RS-485 interfaces n RS-485 interface surge protection n Aids compliance to IEC 61000-4-2 (ESD), n AISG (Antenna Interface Standards Group) IEC 61000-4-4 (EFT) and IEC 61000-4-5 modem protection (Surge) standards R8530 92700 n Fast protection response time (1 µs) n RoHS compliant*
TBU-RSxxx-300-WH - TBU® High-Speed Protector General Information Functional Block Diagram
Bourns® Model TBU-RSxxx-300-WH Series is an integrated dual channel Transient Blocking Unit (TBU) overcurrent device and TVS overvoltage Pin Pin 7 5 protector for the RS-485 communications interface. When coupled with an Media B Transceiver B overvoltage protector like the Bourns® GDT (Model 2030-42T-SM-RPLF) or (MB) (TB) TISP® Thyristor Surge Protector (Model TISP4350J3BJR-S), the integrated Pin4 solution aids compliance to IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT) and
LINE TBU® Device
GND
PHY
IEC 61000-4-5 (Surge) standards (see Application section). Apart from a reduction in the number of components used, there is also a savings of Pin Pin 1 3 52 % in board space when compared to a discrete solution. Media A Transceiver A (MA) (TA) The Model TBU-RSxxx-300-WH Series is available in a DFN package and meets industry standards such as RoHS and Pb-free solder reflow profiles.
Absolute Maximum Ratings (@ TA = 25 °C Unless Otherwise Noted) Symbol Parameter Part Number Value Unit
V +/- MA to TA or +/- MB to TB; TBU-RS055-300-WH 550 imp Peak impulse voltage withstand with duration less than 10 ms TBU-RS085-300-WH 850 V V +/- MA to TA or +/- MB to TB with GND floating; TBU-RS055-300-WH 250 rms Continuous A.C. RMS voltage TBU-RS085-300-WH 425 V Top Operating temperature range -55 to +125 °C Tamax Maximum ambient temperature +125 °C ESD ESD protection per IEC 61000-4-2 - Contact discharge ±2 kV VWM Maximum working voltage (Line to PHY or reverse) 12 or -7 V
Electrical Characteristics (@ TA = 25 °C Unless Otherwise Noted) Symbol Pin Configuration Description Part Number Min. Typ. Max. Unit
Itrigger Current required for the device to go from operating state to protected state 300 450 600 mA V Voltage below which the triggered TBU® device will transition to normal reset operating state 12 16 20 V Line to PHY IQ or Current through the triggered TBU® device with 50 Vdc voltage 0.5 mA Reverse R 6 10 14 device On resistance of the TBU® device TBU-RS055-300-WH TBU-RS085-300-WH 15 21.5 26 Ω tblock Time for the device to go from normal operating state to protected state 1 µs VBR Minimum breakdown voltage @ 1 mA 13.3 -7.5 V I 1 D Leakage current @ VWM 20 µA PHY TA/B Vc to GND Maximum clamping voltage @ 1 A 19 -11 V V or c Maximum clamping voltage @ 5 A (8/20 pulse) 20 Reverse -12 V Vc Maximum clamping voltage @ 17 A (8/20 pulse) 26 -14 V C Typical Junction Capacitance, D VOSC = 30 mV, Vbias = 0 V, Osc. Frequency = 1 MHz 95 pF
Environmental Specifications WARNING Cancer and Reproductive Harm
www.P65Warnings.ca.gov Moisture Sensitivity Level ..1 *RoHS Directive 2015/863, Mar 31, 2015 and Annex. ESD Classification (HBM)..2 Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
