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DISCRETE SEMICONDUCTORS
DATA SHEET
M3D319
BAS521 High voltage switching diode
Product specification 2003 Aug 12
Philips Semiconductors
Product specification
High voltage switching diode
FEATURES * High switching speed: max. 50 ns * High continuous reverse voltage: 300 V * Repetitive peak forward current: 625 mA * Ultra small plastic SMD package. APPLICATIONS * High speed switching * High voltage switching. DESCRIPTION The BAS521 is a high-voltage switching diode fabricated in planar technology and encapsulated in an ultra small SOD523 (SC-79) plastic SMD package. PINNING
BAS521
handbook, halfpage1
Marking code: L4. The marking bar indicates the cathode.

PIN 1 2
Top view
DESCRIPTION cathode anode
2
MAM408
Fig.1
Simplified outline (SOD523; SC-79), and symbol.
LIMITING VALUES In accordance with the absolute Maximum Rating System (IEC 60134). SYMBOL VR VRRM IF IFRM IFSM Ptot Tstg Tj Tamb Note 1. Ts is the temperature at the soldering point of the cathode tab. PARAMETER continuous reverse voltage repetitive peak reverse voltage continuous forward current repetitive peak forward current non-repetitive peak forward current total power dissipation storage temperature junction temperature operating ambient temperature Ts 90 C; note 1 tp = 1 ms; = 0.25 tp = 1 s; square wave; Tj = 25 C prior to surge Ts 90 C; note 1 CONDITIONS - - - - - - -65 - -65 MIN. MAX. 300 300 250 1 4.5 500 +150 150 +150 UNIT V V mA A A mW C C C
2003 Aug 12
2
Philips Semiconductors
Product specification
High voltage switching diode
ELECTRICAL CHARACTERISTICS Tamb = 25 C unless otherwise specified. SYMBOL VBR VF IR trr PARAMETER breakdown voltage forward voltage reverse current reverse recovery time IR = 100 A IF = 100 mA; note 1 VR = 250 V VR = 250 V; Ta = 150 C when switched from IF = 30 mA to IR = 30 mA; RL = 100 ; measured at IR = 3 mA VR = 0 V; f = 1 MHz CONDITIONS - - - - MIN. 300 TYP. 340 0.95 30 40 16 - 1.1 150 100 50
BAS521
MAX.
UNIT V V nA A ns
Cd Note
diode capacitance
-
0.4
5
pF
1. Pulse test: tp = 300 s; = 0.02. THERMAL CHARACTERISTICS SYMBOL Rth j-s Rth j-a Notes 1. Soldering point of the cathode tab. 2. Refer to SOD523 (SC-79) standard mounting conditions. PARAMETER thermal resistance from junction to solder point thermal resistance from junction to ambient CONDITIONS note 1 note 2 VALUE 120 500 UNIT K/W K/W
2003 Aug 12
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Philips Semiconductors
Product specification
High voltage switching diode
GRAPHICAL DATA
BAS521
handbook, halfpage
500
MHC618
IF (mA)
102 handbook, halfpage IR (A) 10
MHC619
400
300 1 200 10-1
100
(1) (2)
(3)
0 0 0.5 1 VF (V) 1.5
10-2
0
40
80
120
160
200 Tj (C)
(1) Tamb = 150 C. (2) Tamb = 75 C. (3) Tamb =25 C.
VR = VRmax; typical values.
Fig.2
Forward current as a function of forward voltage; typical values.
Fig.3
Reverse current as a function of junction temperature.
handbook, halfpage
300
MHC620
handbook, halfpage
0.42
MHC621
IF (mA) 200
Cd (pF)
0.38
100
0.34
0 0 50 100 150 200 Tamb (C)
0.3 0 10 20 30 VR (V) 40
Fig.4
Maximum permissible continuous forward current as a function of ambient temperature.
Fig.5
Diode capacitance as a function of reverse voltage; typical values.
2003 Aug 12
4
Philips Semiconductors
Product specification
High voltage switching diode
BAS521
102 handbook, full pagewidth IFSM (A)
MBG703
10
1
10-1 1 Based on square wave currents. Tj = 25C prior to surge. 10
102
103
tp (s)
104
Fig.6 Maximum permissible non-repetitive peak forward current as a function of pulse duration.
2003 Aug 12
5
Philips Semiconductors
Product specification
High voltage switching diode
PACKAGE OUTLINE Plastic surface mounted package; 2 leads
BAS521
SOD523
A c HE vMA
D
A
0
0.5 scale
1 mm
1 E bp
2
DIMENSIONS (mm are the original dimensions) UNIT mm A 0.65 0.58 bp 0.34 0.26 c 0.17 0.11 D 1.25 1.15 E 0.85 0.75 HE 1.65 1.55 v 0.1
(1)
Note 1. The marking bar indicates the cathode. OUTLINE VERSION SOD523 REFERENCES IEC JEDEC JEITA SC-79 EUROPEAN PROJECTION ISSUE DATE 98-11-25 02-12-13
2003 Aug 12
6
Philips Semiconductors
Product specification
High voltage switching diode
DATA SHEET STATUS LEVEL I DATA SHEET STATUS(1) Objective data PRODUCT STATUS(2)(3) Development DEFINITION
BAS521
This data sheet contains data from the objective specification for product development. Philips Semiconductors reserves the right to change the specification in any manner without notice. This data sheet contains data from the preliminary specification. Supplementary data will be published at a later date. Philips Semiconductors reserves the right to change the specification without notice, in order to improve the design and supply the best possible product. This data sheet contains data from the product specification. Philips Semiconductors reserves the right to make changes at any time in order to improve the design, manufacturing and supply. Relevant changes will be communicated via a Customer Product/Process Change Notification (CPCN).
II
Preliminary data Qualification
III
Product data
Production
Notes 1. Please consult the most recently issued data sheet before initiating or completing a design. 2. The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com. 3. For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status. DEFINITIONS Short-form specification The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook. Limiting values definition Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification. DISCLAIMERS Life support applications These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application. Right to make changes Philips Semiconductors reserves the right to make changes in the products including circuits, standard cells, and/or software described or contained herein in order to improve design and/or performance. When the product is in full production (status `Production'), relevant changes will be communicated via a Customer Product/Process Change Notification (CPCN). Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no licence or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified.
2003 Aug 12
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Philips Semiconductors - a worldwide company
Contact information For additional information please visit http://www.semiconductors.philips.com. Fax: +31 40 27 24825 For sales offices addresses send e-mail to: sales.addresses@www.semiconductors.philips.com.
(c) Koninklijke Philips Electronics N.V. 2003
SCA75
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights.
Printed in The Netherlands
613514/01/pp8
Date of release: 2003
Aug 12
Document order number:
9397 750 11448

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