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CMS08
TOSHIBA Schottky Barrier Rectifier Schottky Barrier Type
CMS08
Switching Mode Power Supply Applications Portable Equipment Battery Applications
* * * * Forward voltage: VFM = 0.37 V (max) Average forward current: IF (AV) = 1.0 A Repetitive peak reverse voltage: VRRM = 30 V Suitable for compact assembly due to small surface-mount package "M-FLATTM" (Toshiba package name) Unit: mm
Absolute Maximum Ratings (Ta = 25C)
Characteristics Repetitive peak reverse voltage Symbol VRRM IF (AV) (Note 1) IF (AV) Peak one cycle surge forward current (non-repetitive) Junction temperature Storage temperature IFSM Tj Tstg Rating 30 1.0 (Ta = 51C) 1.0 (T = 106C) 25 (50 Hz) -40~125 -40~150 Unit V A A A C C
Average forward current
JEDEC JEITA TOSHIBA
3-4E1A
Note 1: Device mounted on a ceramic board (board size: 50 mm x 50 mm, soldering land: 2 mm x 2 mm)
Weight: 0.023 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 IRRM Cj Test Condition IFM = 0.1 A IFM = 0.5 A IFM = 1.0 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 Rth (j-a) Device mounted on a glass-epoxy board (soldering land: 6 mm x 6 mm) Min Typ. 0.23 0.29 0.32 0.04 0.38 70 Max 0.37 1.5 60 C/W 135 16 C/W mA pF V Unit
Thermal resistance
Rth (j-)
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CMS08
Marking
Abbreviation Code S8 Part No. CMS08
Standard Soldering Pad
Unit: mm
1.4
3.0
1.4
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.
2.1
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CMS08
iF - vF
10 0.5
PF (AV) - IF (AV)
Rectangular waveform DC 0 360 0.3 Conduction angle: = 60 0.2 = 120 = 180
iF (A)
Average forward power dissipation PF (AV) (W)
0.5 0.6 0.7 0.8
0.4
Instantaneous forward current
125C
1
75C
25C
0.1
0.1 0
0.1
0.2
0.3
0.4
0 0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
Instantaneous forward voltage vF
(V)
Average forward current
IF (AV) (A)
140
Ta max - IF (AV) Device mounted on a ceramic board (board size: 50 mm x 50 mm)
Maximum allowable lead temperature T max (C)
T max - IF (AV)
140 120 100 = 60 80 60 40 Rectangular waveform = 180 DC
Maximum allowable ambient temperature Ta max (C)
120 100 80 = 180 60 40 20 0 0 = 120 = 60
DC
Rectangular waveform
= 120
0 360 IF (AV) Conduction angle: VR = 15 V 0.6 0.8 1.0 1.2 1.4 1.6
0 360 IF (AV) 20 Conduction angle: VR = 15 V 0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
0.2
0.4
Average forward current
IF (AV) (A)
Average forward current
IF (AV) (A)
rth (j-a) - t
(C/W)
500 Device mounted on a glass-epoxy board Soldering land: 2.1 mm x 1.4 mm 100
Transient thermal impedance rth (j-a)
Device mounted on a glass-epoxy board Soldering land: 6.0 mm x 6.0 mm 10 Device mounted on a ceramic board Soldering land: 2.0 mm x 2.0 mm
1 0.5 0.001 0.01 0.1 1 10 100 1000
Time t (s)
3
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CMS08
Surge forward current (non-repetitive)
28
Cj - VR
1000
(typ.)
f = 1 MHz Ta = 25C
IFSM (A)
24 20 16 12 8 4 0 1
Ta = 25C f = 50 Hz
Peak surge forward current
Junction capacitance
10 100
Cj (pF)
100
Number of cycles
10 1
10
100
Reverse voltage
VR
(V)
IR - Tj
1000
(typ.)
Pulse test 4.0 3.6
PR (AV) - VR
Rectangular waveform 0 360
(typ.)
(mA)
100
Average reverse power dissipation PR (AV) (W)
VR = 30 V
3.2 2.8 2.4 2.0 1.6 1.2 0.8 0.4
DC 300 240 180 120 60
VR
Reverse current IR
10 VR = 20 V 1 VR = 15 V VR = 10 V VR = 5 V 0.1 VR = 3 V
Conduction angle: Tj = 125C
0.01 0
20
40
60
80
100
120
140
0 0
10
20
30
Junction temperature Tj
(C)
Reverse voltage
VR
(V)
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CMS08
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.
5
2006-11-13

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