WESTCODE An IXYS Company Date:- 21 Dec, 24 Data Sheet Issue:- 1 Rectifier Diode Types W1856NC4 to W1856NC5 Old Type No: SW4-5CXC815 Absolute Maximum Ratings VOLTAGE RATINGS MAXIMUM LIMITS V RRM Repetitive peak reverse voltage, (note 1) 4-5 V V RSM Non-repetitive peak reverse voltage, (note 1) 41-51 V UNITS OTHER RATINGS MAXIMUM LIMITS I F(AV)M Maximum average forward current, T sink=55 C, (note 2) 1856 A I F(AV)M Maximum average forward current. T sink=1 C, (note 2) 131 A I F(AV)M Maximum average forward current. T sink=1 C, (note 3) 814 A I F(RMS) Nominal RMS forward current, T sink=25 C, (note 2) 3399 A I F(d.c.) D.C. forward current, T sink=25 C, (note 4) 326 A I FSM Peak non-repetitive surge t p=1ms, V rm=.6v RRM, (note 5) 16 ka I FSM2 Peak non-repetitive surge t p=1ms, V rm 1V, (note 5) 21 ka I 2 t I 2 t capacity for fusing t p=1ms, V rm=.6v RRM, (note 5) 1.28 1 6 A 2 s I 2 t I 2 t capacity for fusing t p=1ms, V rm 1V, (note 5) 2.21 1 6 A 2 s T j op Operating temperature range -4 to +16 C T stg Storage temperature range -55 to +16 C Notes:- 1) De-rating factor of.13% per C is applicable for T j below 25 C. 2) Double side cooled, single phase; 5Hz, 18 half-sinewave. 3) Single side cooled, single phase; 5Hz, 18 half-sinewave. 4) Double side cooled. 5) Half-sinewave, 16 C T j initial. UNITS Data Sheet. Types W1856NC4 to W1856NC5 Page 1 of 9 December, 24
Characteristics V FM PARAMETER MIN. TYP. MAX. TEST CONDITIONS (Note 1) UNITS - - 2.2 I FM=3A Maximum peak forward voltage V - - 2.95 I FM=555A V T Threshold voltage - -.975 V r T Slope resistance - -.348 mω I RRM - - 5 Rated V RRM Peak reverse current ma - - 5 Rated V RRM, T j=25 C Q rr Recovered charge - 62 - µc Q ra Recovered charge, 5% Chord - 3 32 I TM=1A, t p=1µs, di/dt=1a/µs, µc I rr Reverse recovery current - 165 - V r=5v A t rr Reverse recovery time - 36 - µs R thjk - -.22 Double side cooled Thermal resistance, junction to heatsink K/W - -.44 Single side cooled F Mounting force 19-26 kn W t Weight - 48 - g Notes; - 1) Unless otherwise indicated T j=16 C. Data Sheet. Types W1856NC4 to W1856NC5 Page 2 of 9 December, 24
Notes on Ratings and Characteristics 1. Voltage Grade Table Voltage Grade V DRM V DSM V RRM V RSM V D V R V V DC V 4 4 41 2 42 42 43 24 44 44 45 28 46 46 47 212 48 48 49 216 5 5 51 22 2. Extension of Voltage Grades This report is applicable to other voltage grades when supply has been agreed by Sales/Production. 3. De-rating Factor A blocking voltage de-rating factor of.13%/ C is applicable to this device for T j below 25 C. 4. Snubber Components When selecting snubber components, care must be taken not to use excessively large values of snubber capacitor or excessively small values of snubber resistor. Such excessive component values may lead to device damage due to the large resultant values of snubber discharge current. If required, please consult the factory for assistance. 5. Computer Modelling Parameters I AV 5.1 Device Dissipation Calculations 2 VT + VT + = 2 4 ff 2 ff r T 2 r T W AV And: Where V T =.975V, r T =.348mΩ, R th = Supplementary thermal impedance, see table below and ff = Form factor, see table below. W AV T = R T = T th j max T K Supplementary Thermal Impedance Conduction Angle 6 phase (6 ) 3 phase (12 ) ½ wave (18 ) d.c. Square wave Double Side Cooled.285.255.24.22 Square wave Single Side Cooled.513.484.469.44 Sine wave Double Side Cooled.257.233.22 Sine wave Single Side Cooled.482.463.44 Form Factors Conduction Angle 6 phase (6 ) 3 phase (12 ) ½ wave (18 ) d.c. Square wave 2.449 1.732 1.414 1 Sine wave 2.778 1.879 1.57 Data Sheet. Types W1856NC4 to W1856NC5 Page 3 of 9 December, 24
5.2 Calculating V F using ABCD Coefficients The on-state characteristic I F vs. V F, on page 6 is represented in two ways; (i) the well established V T and r T tangent used for rating purposes and (ii) a set of constants A, B, C, D, forming the coefficients of the representative equation for V F in terms of I F given below: V F = A + B ln ( I F ) + C I F + D I F The constants, derived by curve fitting software, are given below for both hot and cold characteristics. The resulting values for V F agree with the true device characteristic over a current range, which is limited to that plotted. 25 C Coefficients 16 C Coefficients A.641971348 A.326766748 B.254553 B.5167461 C 1.77411 1-4 C 2.926949 1-4 D 6.29427 1-3 D 7.328941 1-3 Data Sheet. Types W1856NC4 to W1856NC5 Page 4 of 9 December, 24
5.3 D.C. Thermal Impedance Calculation p = n t = p= 1 r r p 1 e t τ p Where p = 1 to n, n is the number of terms in the series and: t = Duration of heating pulse in seconds. r t = Thermal resistance at time t. r p = Amplitude of p th term. τ p = Time Constant of r th term. The coefficients for this device are shown in the tables below: D.C. Single Side Cooled Term 1 2 3 4 5 r p.291698 4.295845 1-3 7.5719 1-3 2.19581 1-3 1.628753 1-3 τ p 5.67822 1.12362.147857.14381914 1.272749 1-3 D.C. Double Side Cooled Term 1 2 3 4 r p.1177146 6.485814 1-3 2.4717 1-3 1.6719 1-3 τ p.9495346.133795.1636628 1.255571 1-3 6. Reverse recovery ratings (i) Q ra is based on 5% I rm chord as shown in Fig. 1 Fig. 1 (ii) Q rr is based on a 15µs integration time i.e. (iii) K Factor = t t 1 2 Q rr = 15µ s i rr. dt Data Sheet. Types W1856NC4 to W1856NC5 Page 5 of 9 December, 24
Curves Figure 1 Forward characteristics Figure 2 Transient thermal impedance 1 25 C 16 C.1 SSC.44K/W DSC.22K/W Instantaneous forward current - I FM (A) 1 Thermal impedance (K/W).1.1 1 1 2 3 4 Maximum instantaneous forward voltage - V FM (V).1.1.1.1.1 1 1 1 Time (s) Figure 3 Maximum Surge and I 2 t Ratings Total peak half sine surge current - I FSM (A) 1 1 1 1 I FSM : V RRM 1V I FSM : V R =6% V RRM I 2 t: V RRM 1V I 2 t: V R =6% V RRM 1 3 5 1 1 5 1 5 1 W1856NC4-5 T j (initial) = 16 C 1.E+8 1.E+7 1.E+6 1.E+5 Maximum I 2 t (A 2 s) Duration of surge (ms) Duration of surge (cycles @ 5Hz) Data Sheet. Types W1856NC4 to W1856NC5 Page 6 of 9 December, 24
Figure 4 Total recovered charge, Q rr Figure 5 Recovered charge, Q ra (5% chord) 1 T j = 16 C 1 T j = 16 C Total recovered charge - Q rr (µc) 1 2A 15A 1A 5A Recovered charge, 5% chord - Q ra (µc) 2A 15A 1A 5A 1 1 1 1 1 Commutation rate - di/dt (A/µs) 1 1 1 1 1 Commutation rate - di/dt (A/µs) Figure 6 Peak reverse recovery current, I rm Figure 7 Maximum recovery time, t rr (5% chord) 1 T j = 16 C 1 T j = 16 C Reverse recovery current - I rm (A) 1 1 2A 15A 1A 5A Recovery time, 5% chord - t rr (µs) 1 2A 15A 1A 5A 1 1 1 1 1 Commutation rate - di/dt (A/µs) 1 1 1 1 1 Commutation rate - di/dt (A/µs) Data Sheet. Types W1856NC4 to W1856NC5 Page 7 of 9 December, 24
Figure 8 Forward current vs. Power dissipation - Double Side Cooled Figure 9 Forward current vs. Heatsink temperature - Double Side Cooled 7 18 6 ½ wave d.c. 16 3ø 14 Maximum Forward Dissipation (W) 5 4 3 2 6ø Maximum permissable heatsink temperature ( C) 12 1 8 6 4 1 2 6ø 3ø ½ wave d.c. 5 1 15 2 25 3 35 Mean Forward Current (A) (Whole cycle averaged) Figure 1 Forward current vs. Power dissipation - Single Side Cooled 35 3 6ø 3ø ½ wave d.c. 5 1 15 2 25 3 35 Mean Forward Current (A) (Whole cycle averaged) Figure 11 Forward current vs. Heatsink temperature - Single Side Cooled 18 16 14 Maximum Forward Dissipation (W) 25 2 15 1 Maximum permissible heatsink temperature ( C) 12 1 8 6 4 5 2 6ø 3ø ½ wave d.c. 5 1 15 2 25 Mean Forward Current (A) (Whole cycle averaged) 5 1 15 2 25 Mean forward current (A) (Whole cycle averaged) Data Sheet. Types W1856NC4 to W1856NC5 Page 8 of 9 December, 24
Outline Drawing & Ordering Information ORDERING INFORMATION (Please quote 1 digit code as below) W1856 NC Fixed Type Code Fixed outline code Typical order code: W1856NC4 4V V RRM, 27.7mm clamp height capsule. Voltage code V DRM/1 4-5 Fixed code IXYS Semiconductor GmbH Edisonstraße 15 D-68623 Lampertheim Tel: +49 626 53- Fax: +49 626 53-627 WESTCODE E-mail: marcom@ixys.de An IXYS Company Westcode Semiconductors Ltd Langley Park Way, Langley Park, Chippenham, Wiltshire, SN15 1GE. Tel: +44 ()1249 444524 Fax: +44 ()1249 659448 E-mail: WSL.sales@westcode,com IXYS Corporation 354 Bassett Street Santa Clara CA 9554 USA Tel: +1 (48) 982 7 Fax: +1 (48) 496 67 E-mail: sales@ixys.net www.westcode.com www.ixys.com Westcode Semiconductors INC 327 Cherry Avenue Long Beach CA 987 USA Tel: +1 (562) 595 6971 Fax: +1 (562) 595 8182 E-mail: WSI.sales@westcode.com The information contained herein is confidential and is protected by Copyright. The information may not be used or disclosed except with the written permission of and in the manner permitted by the proprietors Westcode Semiconductors Ltd. Westcode Semiconductors Ltd. In the interest of product improvement, Westcode reserves the right to change specifications at any time without prior notice. Devices with a suffix code (2-letter, 3-letter or letter/digit/letter combination) added to their generic code are not necessarily subject to the conditions and limits contained in this report. Data Sheet. Types W1856NC4 to W1856NC5 Page 9 of 9 December, 24
Data Sheet. Types W1856NC4 to W1856NC5 Page 1 of 9 December, 24