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                About information presented in this cross reference

                The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
                Please note that this cross reference is based on TOSHIBA's estimate of compatibility with other manufacturers' products, based on other manufacturers' published data, at the time the data was collected.
                TOSHIBA is not responsible for any incorrect or incomplete information. Information is subject to change at any time without notice.

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                有助于提高IC电源线的可靠性的具有更高峰值脉冲电流额定值的双向TVS二极管:DF2B5PCT、DF2B7PCT

                Product News 2020-05

                Bidirectional TVS diode with a higher peak pulse current rating that contributes to improving reliability of the IC's power supply lines : DF2B5PCT, DF2B7PCT

                Toshiba Electronic Devices & Storage Corporation (“Toshiba”) has launched bidirectional TVS diodes (ESD protection diodes), “DF2B5PCT” and “DF2B7PCT”, which have increased the peak pulse current rating of standard capacitance types suitable for power supply lines of ICs.

                New products feature a peak pulse current rating[1] of 27 A and a typical dynamic resistance[2] of 0.1 Ω. Compared with DF2B7BSL, which is a bidirectional TVS diode with a high peak pulse current rating[1], the ESD absorbing performance improves about three times the peak pulse current[1], and about 50 % reduction in the typical dynamic resistance[2] and a low clamp voltage[1]. Therefore, it contributes to the improvement of reliability.
                The new product lineup includes DF2B7PCT for the standard 5 V power supply line and DF2B5PCT for the 3.3 V power supply line. By selecting a TVS diode suitable for the power supply voltage, excessive applied voltage, which is generated at power supplies in transient state, to the ICs and another parts to be protected in following stages can be suppressed and damage can be prevented.
                The package uses a small SOD-882 (Toshiba’s package name : CST2). Since the mounting area of the board can be reduced, it can be used for various applications besides mobile devices.

                Due to lowering ESD capacity derived from miniaturization process of ICs, reliability requirements for mobile devices such as smartphones and tablets are increasing. In addition, the protective device itself requires a high peak pulse current because the device must be protected from transient overvoltages caused by ESD, induced lightning, and poor power supply quality. To meet these demands, we have developed a lineup of new products with high peak pulse current ratings and low dynamic resistance.

                Notes:
                [1] @IEC61000-4-5 (tp=8/20 μs)
                [2] TLP parameters : Z0=50 Ω, tp=100 ns, tr=300 ps, averaging window : t1=30 ns to t2=60 ns, extraction of dynamic resistance using least squares fit of TLP characteristics between IPP1=8 A and IPP2=30 A.

                Features

                • High peak pulse current rating[1] : IPP=27 A
                • Low dynamic resistance[2] : RDYN=0.1 Ω (typ.)
                • Low clamp voltage[1] :
                    VC=14 V (typ.) @IPP=27 A (DF2B5PCT)
                    VC=16 V (typ.) @IPP=27 A (DF2B7PCT)
                • High electrostatic discharge voltage rating[3] : VESD=±30 kV
                • Working peak reverse voltage :
                    VRWM=3.6 V (max) (DF2B5PCT)
                    VRWM=5.5 V (max) (DF2B7PCT)

                Notes:
                [3] @IEC61000-4-2 (Contact)

                Applications

                • Smart phones
                • Tablets
                • Game consoles, etc.

                Product Specifications

                (@Ta=25 °C)

                Part
                number
                Package Absolute
                maximum ratings
                Working
                peak
                reverse
                voltage
                VRWM
                max
                (V)
                Reverse
                breakdown
                voltage
                VBR
                min / max
                @IBR=1 mA
                (V)
                Clamp
                voltage
                VC[1]
                typ.
                @IPP=27 A
                (V)
                Dynamic
                resistance
                RDYN[2]
                typ.
                (Ω)
                Total
                capacitance
                Ct
                typ.
                @VR=0 V
                (pF)
                Name Size
                typ.
                (mm)
                Electrostatic
                discharge
                voltage
                VESD[3]
                (kV)
                Peak
                pulse
                current
                IPP[1]
                (A)
                DF2B5PCT SOD-882
                (CST2)
                1.0×0.6
                ×0.38
                ±30 27 3.6 3.7 / 6.5 14 0.1 41
                DF2B7PCT 5.5 5.6 / 7.8 16 45

                Internal Circuit

                The illustration of internal circuit of bidirectional TVS diode with a higher peak pulse current rating that contributes to improving reliability of the IC's power supply lines : DF2B5PCT, DF2B7PCT.

                Application Circuit Example

                The illustration of application circuit example of bidirectional TVS diode with a higher peak pulse current rating that contributes to improving reliability of the IC's power supply lines : DF2B5PCT, DF2B7PCT.

                The application circuits shown in this document are provided for reference purposes only. Thorough evaluation is required, especially at the mass-production design stage. Providing these application circuit examples does not grant any license for industrial property rights.

                Characteristic figure (Reference)

                The illustration of characteristic figure (reference) of bidirectional TVS diode with a higher peak pulse current rating that contributes to improving reliability of the IC's power supply lines : DF2B5PCT, DF2B7PCT.

                Information in this document, including product prices and specifications, content of services and contact information, is correct on the date of the announcement but is subject to change without prior notice.

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