BAS521 KEXIN | Alldatasheet

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Technical content

www.kexin.com.cn 1 Diod es Switching Diodes BAS521 (KAS521) ■ Features

  • High switching speed: trr ≤ 50 ns
  • High reverse voltage: VR ≤ 300 V
  • Repetitive peak forward current: IFRM ≤ 1 A
  • High-speed switching
  • High-voltage switching SOD-523 Unit: mm 0.77max 0.6+0.1 -0.1 0.3 +0.05 -0.05 0.8+0.05 -0.05 1.2+0.1 -0.1 1.6+0.1 -0.1 0.1+0.05 -0.02 0.07max + - ■ Absolute Maximum Ratings Ta = 25℃ Parameter Symbol Rating Unit Repetitive Peak Reverse Voltage VRM 300 Reverse Voltage VR 300 Forward Current @ Tsp ≤ 90 °C IF 250 mA Repetitive Peak Forward Current IFRM 1 Non-repetitive peak forward surge current (t=1us) IFSM 4.5 Power Dissipation Pd 500 mW Thermal Resistance Junction to Ambient RθJA 500 Thermal Resistance Junction to Solder Point RθJSP 120 Junction Temperature TJ 150 Storage Temperature range Tstg -65 to 150 V A ℃/W ■ Electrical Characteristics Ta = 25℃ Parameter Symbol Test Conditions Min Typ Max Unit Reverse breakdown voltage VR IR= 100 uA 300 Forward voltage (Note.1) VF IF= 100 mA 1.1 VR= 250 V 150 nA VR= 250 V , Ta = 150℃ 100 uA Junction capacitance Cj VR= 0 V, f= 1 MHz 5 pF Reverse recovery time trr (Note.2) 50 ns V Reverse voltage leakage current IR Note.1: Pulse test: tp = 300 μs; δ = 0.02. Note.2: When switched from IF = 30 mA to IR = 30 mA; RL = 100 Ω; measured at IR = 3 mA. ■ Marking Marking L4 cathode anode

www.kexin.com.cn2 Dio des Switching Diodes BAS521 (KAS521) ■ Typical Characterisitics (1) Tamb = 150 °C (2) Tamb = 75 °C (3) Tamb = 25 °C VR = VRmax Fig 1. Forward current as a function of forward voltage; typical values Fig 2. Reverse current as a function of junction temperature; typical values f = 1 MHz; Tamb = 25 °C Fig 3. Forward current as a function of ambient temperature; derating curve Fig 4. Diode capacitance as a function of reverse voltage; typical values 0 0.5 1 1.5 IF (mA) VF (V) 500 400 300 200 100 (2)(1) (3) 2000 40 80 120 IR (µA) 160 Tj (°C) 102 10−1 10−2 300 200 100 50 100 200 Tamb (°C) 150 IF (mA) 0402010 0.42 0.3 0.34 0.38 Cd (pF) VR (V)

www.kexin.com.cn 3 Diod es Switching Diodes BAS521 (KAS521) ■ Typical Characterisitics Based on square wave currents. Tj = 25 °C prior to surge. Fig 5. Non-repetitive peak forward current as a function of pulse duration; maximum values 102 IFSM (A) 10−1 tp (µs) 011 410310 102 (1) IR = 3 mA Fig 6. Reverse recovery time test circuit and waveforms trr (1) + IF t output signal tr tp t 10 % 90 %VR input signal V = VR + IF × RS RS = 50 Ω IF D.U.T. Ri = 50 Ω SAMPLING OSCILLOSCOPE mga881