P4KE6.8 LUGUANG | Alldatasheet

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Dimensions in inches and (millimeters) DO-41 F e a t u r e s /cuspopen 400W surge capability at 10 x 100us waveform, duty cycle: 0.01% /cuspopen Excellent clamping capability /cuspopen Low zener impedance /cuspopen Fast response time: Typically less than 1.0ps from 0 volts to VBR for unidirectional and 5.0 ns for bidirectional /cuspopen Typical I R less than 1 uA above 10V /cuspopen High temperature soldering guaranteed: 260oC / 10 seconds / .375”,(9.5mm) lead length / 5lbs.,(2.3kg) tension M e c h a n i c a l D a t a /cuspopen Case: Molded plastic /cuspopen Polarity: Color band denotes cathode except bipolar /cuspopen Maximum Ratings and Electrical Characteristics Rating at 25 o C ambient temperature unless otherwise specified. Single phase, half wave, 60 Hz, resistive or inductive load. For capacitive load, derate current by 20% Type Number Symbol Value Units Peak Power Dissipation at TA=25 o C, Tp=1ms (Note 1) PPK Minimum 400 Watts Steady State Power Dissipation at TL=75 o C Lead Lengths .375”, 9.5mm (Note 2) PD 1.0 Watts Peak Forward Surge Current, 8.3 ms Single Half Sine-wave Superimposed on Rated Load (JEDEC method) (Note 3) IFSM 40 Amps Maximum Instantaneous Forward Voltage at 25.0A for Unidirectional Only (Note 4) VF 3.5 / 6.5 Volts Operating and Storage Temperature Range TJ, TSTG -55 to + 175 o C Notes: 1. Non-repetitive Current Pulse Per Fig. 3 and Derated above TA=25 o C Per Fig. 2. 3. 8.3ms Single Half Sine-wave or Equivalent Square Wave, Duty Cycle=4 Pulses Per Minutes Maximum. 4. VF=3.5V for Devices of VBR ≤ 200V and VF=6.5V Max. for Devices VBR>200V Devices for Bipolar Applications 1. For Bidirectional Use C or CA Suffix for Types P4KE6.8 thru Types P4KE440. 2. Electrical Characteristics Apply in Both Directions. P4KE SERIES

400 Watts Transient Voltage Suppressor Diodes

Weight: 0.35 gram http://www.luguang.cn mail:lge@luguang.cn

RATINGS AND CHARACTERISTIC CURVES (P4KE SERIES) FIG.5- TYPICAL JUNCTION CAPACITANCE UNIDIRECTIONAL P A C N O I T C N UJ , C ) F p ( . E CNAT I C A J 1 10 100 200 1,000 10,000 100 100,000 V , BREAKDOWN VOLTAGE. VOLTS(BR) Tj=25 C f=1.0MHz Vsig=50mVp-p MEASURED at ZERO BIAS MEASURED at STAND-OFF VOLTAGE, V WM FIG.4- MAXIMUM NON-REPETITIVE FORWARD SURGE CURRENT PEAK FORWARD SURGE CURRENT. (A) 10 100 NUMBER OF CYCLES AT 60Hz 8.3ms Single Half Sine Wave JEDEC Method UNIDIRECTIONAL ONLY FIG.1- PEAK PULSE POWER RATING CURVE Pppm, PEAK PULSE POWER, KW 0.1 100 td. PULSE WIDTH, sec. 0.1 s 1.0 s 10 s 100 s 1.0ms 10ms NON-REPETITIVE PULSE WAVEFORM SHOWN in FIG. 3 T =25 C A 0 FIG.3- CLAMPING POWER PULSE WAVEFORM PEAK PULSE CURRENT 0 0 1.0 2.0 3.0 4.0 100 t, TIME, ms PULSE WIDTH (td) is DEFINED as the POINT WHERE the PEAK CURRENT DECAYS to 50% of l PPM td tr=10 sec./c109 10/1000 sec. WAVEFORM as DEFINED by R.E.A. /c109 PEAK VALUE lPPM HALF VALUE- lPPM 150 TL, LEAD TEMPERATURE, C o FIG.2- DERATING CURVE PM , STEADY STATE POWER DISSIPATION, WATTS (AV) 0 25 50 75 100 125 150 175 200 2.5 5.0 1.6 X 1.6 X .040" (40 X 40 X 1mm.) COPPER HEAT SINKS L=0.375"(9.5mm) LEAD LENGTHS With heat sink Without heat sink PULSE P4KE SERIES http://www.luguang.cn mail:lge@luguang.cn

ELECTRICAL CHARACTERISTICS (TA=25OC unless otherwise noted) Test Stand-Off Maximum Maximum Maximum Maximum Device Nominal Current Voltage Reverse Leakage Peak Pulse Clamping Temperature Voltage @IT VWM at VWM Current IPPM Voltage at IPPM Coefficient (Volts) Min Max (mA) (Volts) ID (uA) (Note 2)(Amps) V C(Volts) of V BR(% / OC) Breakdown Voltage VBR (Volts) (Note 1) Notes: 1. VBR measured after IT applied for 300us, IT=square wave pulse or equivalent. 2. Surge current waveform per Figure 3 and derate per Figure 2. 3. For bipolar types having VWM of 10 volts and under, the ID limit is doubled. 4. All terms and symbols are consistent with ANSI/IEEE C62.35. P4KE SERIES http://www.luguang.cn mail:lge@luguang.cn

TVS APPLICATION NOTES: Transient Voltage Suppressors may be used at various points in a circuit to provide various degrees of protection. The following is a typical linear power supply with transient voltage suppressor units placed at different points. All provide protection of the load. FIGURE 1 Transient Voltage Suppressors 1 provides maximum protection. However, the system will probably require replacement of the line fuse(F) since it provides a dominant portion of the series impedance when a surge is encountered. However, we do not recommend to use the TVS diode here, unless we can know the electric circuit impedance and the magnitude of surge rushed into the circuit. Otherwise the TVS diode is easy to be destroyed by voltage surge. Transient Voltage Suppressor 2 provides execllent protection of circuitry excluding the transformer(T). However, since the transformer is a large part of the series impedance, the chance of the line fuse opening during the surge condition is reduced. Transient Voltage Suppressor 3 provides the load with complete protection. It uses a unidirectional Transient Voltage Suppressor, which is a cost advantage. The series impedance now includes the line fuse, transformer, and bridge rectifier(B) so failure of the line fuse is further reduced. If only Transient Voltage Suppressor 3 is in use, then the bridge rectifier is unprotected and would require a higher voltage and current rating to prevent failure by transients. Any combination of these three, or any one of these applications, will prevent damage to the load. This would require var ying trade-offs in power supply protection versus maintenance(changing the time fuse). An additional method is to utilize the Transient Voltage Suppressor units as a controlled avalanche bridge. This reduces the parts count and incorporates the protection within the bridge rectifier. FIGURE 2 P4KE SERIES http://www.luguang.cn mail:lge@luguang.cn