BYV21 NJSEMI | Alldatasheet
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, O ne.. 20 STERN AVE. SPRINGFIELD, NEW JERSEY 07081 U.S.A. TELEPHONE: (973) 376-2922 (212) 227-6005 FAX: (973) 376-8960 BYV21 SERIES SCHOTTKY-BARRIER RECTIFIER DIODES High-efficiency schottky-barrier rectifier diodes in DO-4 metal envelopes, featuring low forward voltage drop, low capacitance, absence of stored charge and high temperature stability. They are intended for use in low output voltage switched-mode power supplies and high-frequency circuits in general, where both low conduction losses and zero switching losses are important. They can also withstand reverse voltage transients. The series consists of normal polarity (cathode to stud) types. A version with guaranteed reverse surge capability, BYV21-40A, is also available. QUICK REFERENCE DATA Repetitive peak Average forwarc Forward voltage reverse voltage current Junction temperature VRRM 'F(AV) VF Ti BYV21-30 35 max. 30 35 40(A) 45 40 45 V max. 30 A < 0.55 V max. 150 °C MECHANICAL DATA Fig.1 DO-4 with 10-32 UNF sutd (04.83 mm) as standard, Metric M5 stud (05 mm) is available on request, e.g. BYV21-30M. Dimensions in mm 11.5 10.7 I — ma X -4 — .IU.2J3 p max 1 | r c 2.3 nin **, .. 20.3 __^ max 5.2 9.3 max max Net mass: 7 g Diameter of clearance hole: 5.2 mm Accessories supplied on request: 5629Sa (mica washer), 56295b (PTFE ring), 56295c (insulating bush). Supplied with device: 1 nut, 1 lock washer. Torque on nut: min. 0.9 Nm (9 kg cm), max. 1,7 Nm (17 kg cm). Nut dimensions across the flats: 10-32 UNF, 9.5 mm; M5. 8.0 mm. NJ Semi-Corjductors reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by NJ Semi-Conductors is believed to be both accurate and reliable at the time of going to press. However. NJ Semi-Conductors assumes no responsibility for any errors or omissions discovered in its use. NJ Semi-Conductors encourages customers to verify that datasheets are current before placing orders. Quality Semi-Conductors
max. max. max. max. 40(A) max. max. max. RATINGS Limiting values in accordance with the Absolute Maximum System (IEC 134) Voltages Non-repetitive peak reverse voltage VRSM Repetitive peak reverse voltage (note 1) VfiRM Crest working reverse voltage VRWM Continuous reverse voltage Vp
- Currents Average forward current; switching losses negligible square wave; 8 = 0.5; up to Tmb=124°C(note2) IF(AV, sinusoidal; up to Tmb = 126 °C (note 2) 'F(AV) R.M.S. forward current 'p(RMS) Repetitive peak forward current tp = 20 ><s; 5 = 0.02 IFRM Non-repetitive peak forward current half sine-wave; Tj «= 125 °C prior to surge; with reapplied VRWM max-' t = 10ms IFSM t = 8,3ms IFSM I2t for fusing (t= 10ms) l*t Reverse surge current (BYV21-40A only) tp=100/is IRSM Temperatures Storage temperature Tstg Junction temperature Tj MOUNTING INSTRUCTIONS The top connector should be neither bent nor twisted; it should be soldered into the circuit so that there is no strain on it. During soldering, the heat conduction to the junction should be kept to a minimum. max. max. max. 42.5 500 600 650 1800 1.0 -55 to+150 150 V V V V A A A A A A's THERMAL RESISTANCE From junction to mounting base From mounting base to heatsink with heatsink compound without heatsink compound Transient thermal impedance; t = 1 ms CHARACTERISTICS Forward voltage !F = 30A;Tj= 100 °C IF =80A;Tj = 25°C Rate of rise of reverse voltage VR = VRWMmax Reverse current Rth j-mb Rth mb-h Rth mb-h zth j-mb VF VF dt j = 125°C Capacitance at f = 1 MHz VR = 5 V;Tj = 25to 125 °C typ. 0.3 0.5 0.15 0.55 0.88 1500 150 1150 K/W K/W K/W K/W mA PF