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Data Sheet. Types M1494NC180 to M1494NC250 Issue 2 Page 1 of 11 October 2014 Date:- 20 Oct 2014 Data Sheet Issue:- 2 Soft Recovery Diode Type M1494NC180 to M1494NC250 Absolute Maximum Ratings VOLTAGE RATINGS MAXIMUM LIMITS UNITS VRRM Repetitive peak reverse voltage, (note 1) 1800-2500 V VRSM Non-repetitive peak reverse voltage, (note 1) 1900-2600 V OTHER RATINGS MAXIMUM LIMITS UNITS IF(av)M Maximum average forward current, Tsink=55°C, (note 2) 1494 A IF(av)M Maximum average forward current. Tsink=100°C, (note 2) 705 A IF(av)M Maximum average forward. Tsink=100°C, (note 3) 402 A IF(RMS) Nominal RMS forward current, Tsink=25°C, (note 2) 2982 A IF(d.c.) D.C. forward current, Tsink=25°C, (note 4) 2506 A IFSM Peak non-repetitive surge tp=10ms, VRM=60%VRRM, (note 5) 19.6 kA IFSM2 Peak non-repetitive surge tp=10ms, VRM10V, (note 5) 21.5 kA I2t I2t capacity for fusing tp=10ms, VRM=60%VRRM, (note 5) 1.92 × 106 A2s I2t I2t capacity for fusing tp=10ms, VRM10V, (note 5) 2.31 × 106 A2s Tj op Operating temperature range -40 to +125 °C Tstg Storage temperature range -40 to +150 °C Notes:- 1) De-rating factor of 0.13% per °C is applicable for T j below 25°C. 2) Double side cooled, single phase; 50Hz, 180° half -sinewave. 3) Single side cooled, single phase; 50Hz, 180° half -sinewave. 4) Double side cooled. 5) Half-sinewave, 125°C Tj initial.
Soft Recovery Diode Types M1494NC180 to M1494NC250 Data Sheet. Types M1494NC180 to M1494NC250 Issue 2 Page 2 of 11 October 2014 Characteristics PARAMETER MIN. TYP. MAX. TEST CONDITIONS (Note 1) UNITS VFM Maximum peak forward voltage - - 1.85 IFM=3000A V - - 2.34 IFM=4500A V VT0 Threshold voltage - - 1.150 V rT Slope resistance - - 0.265 m VFRM Maximum forward recovery voltage - - 45 di/dt = 1000A/µs V - - 28 di/dt = 1000A/µs, Tj= 25°C IRRM Peak reverse current - - 85 Rated VRRM mA Qrr Recovered charge - 815 - IFM=1000A, tp=1000µs, di/dt=60A/µs, Vr=50V, 50% Chord. µC Qra Recovered charge, 50% Chord - 275 380 µC Irm Reverse recovery current - 140 - A trr Reverse recovery time, 50% Chord - 3.9 - µs RthJK Thermal resistance, junction to heatsink - - 0.022 Double side cooled K/W - - 0.044 Single side cooled F Mounting force 19 - 26 Note 2 kN Wt Weight - 510 - g Notes:- 1) Unless otherwise indicated Tj=125°C. 2) For other clamp forces, please consult factory.
Soft Recovery Diode Types M1494NC180 to M1494NC250 Data Sheet. Types M1494NC180 to M1494NC250 Issue 2 Page 3 of 11 October 2014 Notes on Ratings and Characteristics
1.0 Voltage Grade Table
(V) VRSM (V) VR dc (V) 18 1800 1900 1150 20 2000 2100 1250 22 2200 2300 1350 24 2400 2500 1450 25 2500 2600 1500
2.0 De-rating Factor
A blocking voltage de-rating factor of 0.13% per °C is applicable to this device for Tj below 25°C.
3.0 ABCD Constants
These constants (applicable only over current range of VF characteristic in Figure 1) are the coefficients of the expression for the forward characteristic given below: where IF = instantaneous forward current.
4.0 Reverse recovery ratings
(i) Qra is based on 50% Irm chord as shown in Fig.(a) below. (ii) Qrr is based on a 150s integration time. I.e. s rrrr dtiQ 150 (iii) 1 t tFactorK
Soft Recovery Diode Types M1494NC180 to M1494NC250 Data Sheet. Types M1494NC180 to M1494NC250 Issue 2 Page 4 of 11 October 2014
5.0 Reverse Recovery Loss
The following procedure is recommended for use where it is necessary to include reverse recovery loss. From waveforms of recovery current obtained from a high frequency shunt (see Note 1) and reverse voltage present during recovery, an instantaneous reverse recovery loss waveform must be constructed. Let the area under this waveform be E joules per pulse. A new sink temperature can then be evaluated from: Where k = 0.2314 (°C/W)/s E = Area under reverse loss waveform per pulse in joules (W.s.) f = Rated frequency in Hz at the original sink temperature. Rth(J-Hs) = d.c. thermal resistance (°C/W) The total dissipation is now given by: fEWW originaltot )()( NOTE 1 - Reverse Recovery Loss by Measurement This device has a low reverse recovered charge and peak reverse recovery current. When measuring the charge, care must be taken to ensure that: (a) AC coupled devices such as current transformers are not affected by prior passage of high amplitude forward current. (b) A suitable, polarised, clipping circuit must be connected to the input of the measuring oscilloscope to avoid overloading the internal amplifiers by the relatively high amplitude forward current signal. (c) Measurement of reverse recovery waveform should be carried out with an appropriate critically damped snubber, connected across diode anode to cathode. The formula used for the calculation of this snubber is shown below: dtdi S r C VR 42 Where: Vr = Commutating source voltage CS = Snubber capacitance R = Snubber resistance
6.0 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 resul tant values of snubber discharge current. If required, please consult the factory for assistance.
Soft Recovery Diode Types M1494NC180 to M1494NC250 Data Sheet. Types M1494NC180 to M1494NC250 Issue 2 Page 5 of 11 October 2014
7.0 Computer Modelling Parameters
7.1 Device Dissipation Calculations
s AVsoo AV rff WrffVVI Where VT0 =1.15V, rT = 0.265m ff = form factor (normally unity for fast diode applications) KMAXj th AV TTT R TW
7.2 Calculation of VF using ABCD Coefficients
The forward characteristic IF Vs VF, on page 6 is represented in two ways; (i) the well established VT0 and rT tangent used for rating purposes and ((iiii)) a set of constants A, B, C, and D forming the coefficients of the representative equation for VF in terms of IF given below: The constants, derived by curve fitting software, are given in this report for hot characteristics. The resulting values for VF agree with the true device characteristic over a current range, which is limited to that plotted. 25°C Coefficients 125°C Coefficients A 0.6059922 -0.0548532 B 0.0483707 0.1612135 C 9.492610×10-5 2.274044×10-4 D 0.0112304 2.917716×10-4
8.0 Frequency Ratings
The curves illustrated in figures 8 to 16 are for guidance only and are superseded by the maximum ratings shown on page 1.
9.0 Square wave ratings
These ratings are given for load component rate of rise of forward current of 100 and 500 A/µs.
10.0 Duty cycle lines
The 100% duty cycle is represented on all the ratings by a straight line. Other duties can be included as parallel to the first.
Soft Recovery Diode Types M1494NC180 to M1494NC250 Data Sheet. Types M1494NC180 to M1494NC250 Issue 2 Page 11 of 11 October 2014 Outline Drawing & Ordering Information ORDERING INFORMATION (Please quote 10 digit code as below) M1494 NC 0 Fixed Type Code Fixed outline code Voltage code VDRM/100 18-25 Fixed code Order code: M1494NC180 – 1800V VRRM, 27.7mm clamp height capsule. IXYS Semiconductor GmbH Edisonstraße 15 D-68623 Lampertheim Tel: +49 6206 503-0 Fax: +49 6206 503-627 E-mail: marcom@ixys.de IXYS UK Westcode Ltd Langley Park Way, Langley Park, Chippenham, Wiltshire, SN15 1GE. Tel: +44 (0)1249 444524 Fax: +44 (0)1249 659448 E-mail: sales@ixysuk.com IXYS Corporation
1590 Buckeye Drive
Tel: +1 (408) 547 9000 Fax: +1 (408) 496 0670 E-mail: sales@ixys.net www.ixysuk.com www.ixys.com IXYS Long Beach, Inc IXYS Long Beach, Inc
2500 Mira Mar Ave, Long Beach
Tel: +1 (562) 296 6584 Fax: +1 (562) 296 6585 E-mail: service@ixyslongbeach.com The information contained herein is c onfidential 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 IXYS UK Westcode Ltd. In the interest of product improvement, IXYS UK Westcode Ltd 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. © IXYS UK Westcode Ltd.