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CRS08
TOSHIBA Schottky Barrier Rectifier Schottky Barrier Type
CRS08
Switching Mode Power Supply Applications Portable Equipment Battery Applications
* * * * Forward voltage: VFM = 0.36 V (max) Average forward current: IF (AV) = 1.5 A Repetitive peak reverse voltage: VRRM = 30 V Suitable for compact assembly due to small surface-mount package "S-FLATTM" (Toshiba package name) Unit: mm
Absolute Maximum Ratings (Ta = 25C)
Characteristics Repetitive peak reverse voltage Average forward current Peak one cycle surge forward current (non-repetitive) Junction temperature Storage temperature Symbol VRRM IF (AV) IFSM Tj Tstg Rating 30 1.5 (Note 1) 30 (50 Hz) -40~125 -40~150 Unit V A A C C
JEDEC JEITA TOSHIBA
3-2A1A
Note 1: T = 86C: Rectangular waveform ( = 180), VR = 15 V
Weight: 0.013 g (typ.) Note 2: Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute maximum ratings. Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook ("Handling Precautions"/Derating Concept and Methods) and individual reliability data (i.e. reliability test report and estimated failure rate, etc).
Electrical Characteristics (Ta = 25C)
Characteristics Symbol VFM (1) Peak forward voltage VFM (2) VFM (3) Repetitive peak reverse current Junction capacitance IRRM (1) IRRM (2) Cj Test Condition IFM = 0.1 A IFM = 1.0 A IFM = 1.5 A VRRM = 5 V VRRM = 30 V VR = 10 V, f = 1.0 MHz Device mounted on a ceramic board (soldering land: 2 mm x 2 mm) Thermal resistance (junction to ambient) Rth (j-a) Device mounted on a glass-epoxy board (soldering land: 6 mm x 6 mm) Min Typ. 0.23 0.32 0.345 50 90 Max 0.36 1.0 70 C/W 140 20 C/W A mA pF V Unit
Thermal resistance (junction to lead)
Rth (j-)
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CRS08
Marking
Abbreviation Code S8 Part No. CRS08
Standard Soldering Pad
Unit: mm 1.2 1.2 2.8
Handling Precaution
Schottky barrier diodes have reverse current characteristic compared to the other diodes. There is a possibility SBD may cause thermal runaway when it is used under high temperature or high voltage. This device is VF-IRRM trade-off type, lower VF higher IRRM; therefore, thermal runaway might occur when voltage is applied. Please take forward and reverse loss into consideration during design. The absolute maximum ratings denote the absolute maximum ratings, which are rated values and must not be exceeded during operation, even for an instant. The following are the general derating methods that we recommend when you design a circuit with a device. VRRM: Use this rating with reference to the above. VRRM has a temperature coefficient of 0.1%/C. Take this temperature coefficient into account designing a device at low temperature. We recommend that the worst case current be no greater than 80% of the absolute maximum rating of IF(AV) and Tj be below 100C. When using this device, take the margin into consideration by using an allowable Tamax-IF(AV) curve. This rating specifies the non-repetitive peak current. This is only applied for an abnormal operation, which seldom occurs during the lifespan of the device. Derate this rating when using a device in order to ensure high reliability. We recommend that the device be used at a Tj of below 100C.
IF(AV):
IFSM:
Tj:
Thermal resistance between junction and ambient fluctuates depending on the device's mounting condition. When using a device, please design a circuit board and a soldering land size to match the appropriate thermal resistance value. Please refer to the Rectifiers databook for further information.
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CRS08
iF - vF
10 0.7
PF (AV) - IF (AV)
DC
iF (A)
3 Tj = 125C 1
Average forward power dissipation PF (AV) (W)
0.6 180 0.5 0.4 0.3 0.2 0.1 0 0 0 360 Conduction angle 0.4 0.8 1.2 1.6 2.0 2.4 120
Instantaneous forward current
0.3
75C 25C
= 60
0.1
Rectangular waveform
0.03
0.01 0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
Instantaneous forward voltage vF
(V)
Average forward current
IF (AV) (A)
T max - IF (AV)
140 30000 10000
rth (j-a) - t
Device mounted on a ceramic board Soldering land: 2 mm x 2 mm Device mounted on a glass-epoxy board Soldering land: 6 mm x 6 mm
Maximum allowable lead temperature T MAX (C)
120 100 80 = 60 60 40 20 0 360 IF (AV) Conduction angle VR = 15 V 0.4 0.8 1.2 1.6 2.0 2.4 Rectangular waveform 120 180 DC
Transient thermal impedance rth (j-a) (C/W)
1000
100 10
0
1 1
10
100
1000
10000
100000
Average forward current
IF (AV) (A)
Time t (ms)
Cj - VR
1000
(typ.)
f = 1 MHz Ta = 25C 40
Surge forward current (non-repetitive)
IFSM (A)
Ta = 25C f = 50 Hz 30
500
Cj (pF) Junction capacitance
300
100
Peak surge forward current
3 5 10 30 50 100
20
50 30
10
10 1
0 1
3
5
10
30
50
100
Reverse voltage
VR
(V)
Number of cycles
3
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CRS08
IR - Tj
1000 Pulse test
(typ.)
4.8 Rectangular waveform 360
PR (AV) - VR
(typ.)
Average reverse power dissipation PR (AV) (W)
(mA)
100 VR = 30 V 10 20 V 1 3V 0.1 10 V 5V
4.0
0
3.2
VR Conduction angle Tj = 125C DC 300 240
Reverse current IR
2.4
1.6 60 0.8
180 120
0.01 0
20
40
60
80
100
120
140
0
0
4
8
12
16
20
24
28
Junction temperature Tj
(C)
Reverse voltage
VR
(V)
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CRS08
RESTRICTIONS ON PRODUCT USE
* The information contained herein is subject to change without notice.
20070701-EN
* TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the "Handling Guide for Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc. * The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.).These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in his document shall be made at the customer's own risk. * The products described in this document shall not be used or embedded to any downstream products of which manufacture, use and/or sale are prohibited under any applicable laws and regulations. * The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any patents or other rights of TOSHIBA or the third parties. * Please contact your sales representative for product-by-product details in this document regarding RoHS compatibility. Please use these products in this document in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances. Toshiba assumes no liability for damage or losses occurring as a result of noncompliance with applicable laws and regulations.
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2006-11-13

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