STTH32 HIGH EFFICIENCY ULTRAFAST DIODE MAIN PRODUCT CHARACTERISTICS I F(AV) V RRM 3A 2 V Tj (max) 175 C V F (max).75 V trr (max) 35 ns FEATURES AND BENEFITS Very low conduction losses Negligible switching losses Low forward and reverse recovery times High junction temperature DESCRIPTION The STTH32 which is using ST's new 2V planar technology, is specially suited for switching mode base drive & transistor circuits. The device is also intended for use as a free wheeling diode in power supplies and other power switching applications. DO-21AD STTH32 ABSOLUTE RATINGS (limiting values) Symbol Parameter Value Unit V RRM Repetitive peak reverse voltage 2 V I F (AV) Average forward current TI = 17 C δ =.5 3 A I FSM Surge non repetitive forward current t p = 1ms Sinusoidal 13 A T stg Storage temperature range -65to+175 C Tj Maximum operating junction temperature 175 C THERMAL PARAMETERS Symbol Parameter Value Unit Rth (j-a) Junction-ambient* 25 C/W * On infinite heatsink with 1mm lead length. November 21 - Ed: 1A 1/5
STATIC ELECTRICAL CHARACTERISTICS Symbol Parameter Test Conditions Min. Typ. Max. Unit I R * Reverse leakage current T j = 25 C V R =V RRM 3 µa T j = 125 C 4 75 V F ** Forward voltage drop T j = 25 C I F =3A.95 V Pulse test :*tp=5ms,δ<2% ** tp = 38 µs, δ <2% T j = 125 C.66.75 To evaluate the maximum conduction losses use the following equations: 2 P=.6xI F(AV) +.5 I F (RMS) DYNAMIC ELECTRICAL CHARACTERISTICS Symbol Parameter Test conditions Min. Typ. Max. Unit trr Reverse recovery time I F =1A di F /dt = - 5A/µs V R = 3V T j = 25 C 35 ns tfr V FP Forward recovery time Forward recovery voltage I F =3A di F /dt = 5A/µs V FR =1.1xV F max T j = 25 C 7 ns T j = 25 C 1.6 V 2/5
Fig. 1: Average forward power dissipation versus average forward current. Fig. 2: Average forward current versus ambient temperature (δ=.5). 3. PF(av)(W) δ =.5 δ =.1 δ =.2 δ =.5 IF(av)(A) 3.5 3. Rth(j-a)=Rth(j-l) 2. δ = 1 T.5 IF(av)(A) δ=tp/t tp...5 2. 3. 3.5 2. Rth(j-a)=75 C/W.5 Tamb( C). 25 5 75 1 125 15 175 Fig. 3: Thermal resistance versus lead length. Fig. 4: Relative variation of thermal impedance junction ambient versus pulse duration (printed circuit board epoxy FR4, LIeads = 1mm). Rth( C/W) 9 8 7 6 5 4 3 2 1 Rth(j-a) Rth(j-l) Lleads(mm) 5 1 15 2 25 Zth(j-a)/Rth(j-a).9.8.7.6 δ =.5.5.4.3 δ =.2 T.2 δ =.1.1 Single pulse tp(s) δ=tp/t tp. 1.E-1 1.E+ 1.E+1 1.E+2 1.E+3 Fig. 5: Forward voltage drop versus forward current. Fig. 6: Junction capacitance versus reverse voltage applied (typical values). IFM(A) 1. (Maximum values) C(pF) 1 F=1MHz Vosc=3mV 1. (Typical values) (Maximum values).1 VFM(V)..2.4.6.8 1.2 1.4 1.6 1.8 1 VR(V) 1 1 1 1 3/5
Fig. 7: Reverse recovery time versus di F /dt (9% confidence). Fig. 8: Peak reverse recovery current versus di F /dt (9% confidence). trr(ns) 1 9 8 VR=1V IRM(A) 6 5 VR=1V 7 6 4 5 3 4 3 2 2 1 dif/dt(a/µs) 1 1 1 1 1 dif/dt(a/µs) 1 1 1 1 Fig. 9: Relative variations of dynamic parameters versus junction temperature. 5. 4.5 IRM; trr; Qrr[Tj]/IRM; trr; Qrr[] dif/dt=2a/µs VR=1V 4. Qrr 3.5 3. 2. IRM trr Tj( C) 25 5 75 1 125 15 175 4/5
PACKAGE MECHANICAL DATA DO-21AD B A B ØC note 1 E E note 1 ØD ØD note 2 DIMENSIONS REF. Millimeters Inches NOTES Min. Max. Min. Max. A 9.5.374 1 - The lead diameter D is not controlled over zone E B 25.4 C 5.3.29 2 - The minimum axial length within which the device may be D 1.3.51 placed with its leads bent at right angles is.59"(15 mm) E 1.25.49 Ordering code Marking Package Weight Base qty Delivery mode STTH32 STTH32 DO-21AD 1.16 g 6 Ammopack STTH32RL STTH32 DO-21AD 1.16 g 19 Tape and reel White band indicates cathode Epoxy meets UL94,V Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics 21 STMicroelectronics - Printed in Italy - All rights reserved. STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany Hong Kong - India - Israel - Italy - Japan - Malaysia -Malta - Morocco - Singapore Spain - Sweden - Switzerland - United Kingdom - United States. http://www.st.com 5/5