CMS14
Schottky Barrier Diode
CMS14
○ Radio-Frequency Rectification in Switching Regulators
○ DC-DC Converters
•
Unit: mm
Repetitive peak reverse voltage : VRRM = 60 V
: IF (AV) = 2.0 A
•
Average forward current
•
•
Peak forward voltage
: VFM = 0.58 V (max)
Suitable for high-density board assembly due to the use of a small
Toshiba Nickname: M−FLATTM
Absolute Maximum Ratings (Ta = 25°C)
Characteristics
Symbol
Rating
Unit
Repetitive peak reverse voltage
VRRM
60
V
Average forward current
IF (AV)
Non-repetitive peak forward surge current
Note 1: Tℓ = 112°C
2 CATHODE
A
IFSM
40 (50 Hz)
A
Tj
−40 to 150
°C
Tstg
−40 to 150
°C
Junction temperature
Storage temperature range
2.0 (Note 1)
1 ANODE
Device mounted on a ceramic board
board size
: 50 mm × 50 mm
Soldering land size
: 2 mm × 2 mm
board thickness
: 0.64 mm
Rectangular waveform : α = 180°, VR = 30 V
JEDEC
―
JEITA
―
TOSHIBA
3-4E1S
Weight: 0.023 g (typ.)
Note2: 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 = 25°C)
Characteristics
Peak forward voltage
Repetitive peak reverse current
Junction capacitance
Thermal resistance
(junction to ambient)
Thermal resistance (junction to lead)
Symbol
Test Condition
Min
Typ.
Max
VFM (1)
IFM = 1 A (pulse test)
―
0.45
―
VFM (2)
IFM = 2 A (pulse test)
―
0.53
0.58
IRRM (1)
VRRM = 5 V (pulse test)
―
0.6
―
IRRM (2)
VRRM = 60 V (pulse test)
―
25
200
VR = 10 V, f = 1 MHz
―
77
―
Device mounted on a ceramic board
board size
50 mm × 50 mm
soldering land size
2 mm × 2 mm
board thickness
0.64 mm
―
―
60
Device mounted on a glass-epoxy board
board size
50 mm × 50 mm
soldering land size
6 mm × 6 mm
board thickness
1.6 mm
―
―
135
Device mounted on a glass-epoxy board
board size
50 mm × 50 mm
soldering land size
2.1 mm × 1.4 mm
board thickness
1.6 mm
―
―
210
―
―
―
16
Cj
Rth (j-a)
Rth (j-ℓ)
Unit
V
μA
pF
°C/W
°C/W
Start of commercial production
2002-12
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CMS14
Marking
Abbreviation Code
Part No.
SD
CMS14
Land pattern dimensions for reference only
2.1
Unit: mm
1.4
3.0
1.4
Handling Precaution
1)
Schottky barrier diodes have reverse current characteristics compared to other diodes.
There is a possibility SBD may cause thermal runaway when it is used under high temperature or high voltage.
Please take forward and reverse loss into consideration during design.
2)
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 (1) above. VRRM has a temperature coefficient of 0.1%/°C. Take this
temperature coefficient into account designing a device at low temperature.
IF (AV): We recommend that the worst case current be no greater than 80% of the absolute maximum rating of
IF (AV) and Tj be below 120°C. When using this device, take the margin into consideration by using an
allowable Ta max - IF (AV) curve.
IFSM: 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.
Tj: 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 120°C.
3)
Thermal resistance between junction and ambient fluctuates depending on the device’s mounting condition. When
using a device, design a circuit board and a soldering land size to match the appropriate thermal resistance value.
4)
For other design considerations, see the Toshiba website.
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CMS14
I F – VF
PF (AV) – IF (AV)
Tj = 150°C
(A)
Forward current IF
2
Average forward power dissipation
PF (AV) (W)
10
1
125°C
75°C
25°C
0.1
Rectangular
waveform
DC
1.6
0° α 360°
180°
1.2 Conduction angle α
120°
α = 60°
0.8
0.4
Pulse test
0.01
0
0.2
0.4
0.6
Forward voltage
0.8
VF
1
0
0
1.2
0.6
(V)
Maximum allowable ambient temperature
Ta max (°C)
140
120
80
60
40
180°
DC
Rectangular
waveform
0° α 360°
IF (AV)
20 Conduction
angle α
VR = 30 V
0
0
0.4
0.8
1.2
1.6
Average forward current
2
3
IF (AV) (A)
2.4
2.8
140
120
100
80
Device mounted on a ceramic board: Rectangular
board size: 50 mm × 50 mm waveform
soldering land:
2 mm × 2 mm
board thickness:
0° α 360°
0.64mm
IF (AV)
Conduction
angle α
VR = 30 V
60
DC
40
20
120°
α = 60°
0
0
3.2
180°
0.4
IF (AV) (A)
0.8
1.2
1.6
2
Average forward current
2.4
2.8
3.2
IF (AV) (A)
rth (j-a) – t
1000
Transient thermal resistance
rth (j-a) (°C/W)
Maximum allowable lead temperature
Tℓ max (°C)
160
120°
2.4
Ta max – IF (AV)
Tℓ max – IF (AV)
α = 60°
1.8
Average forward current
160
100
1.2
Device mounted on a glass-epoxy board:
board size: 50 mm × 50 mm
Soldering land size: 2.1 mm × 1.4 mm
board thickness: 1.6 mm
100
Device mounted on a glass-epoxy board:
board size: 50 mm × 50 mm
Soldering land size: 6 mm × 6 mm
board thickness: 1.6 mm
10
Device mounted on a ceramic board:
board size: 50 mm × 50 mm
Soldering land: size 2 mm × 2 mm
board thickness: 0.64 mm
1
0.001
0.01
0.1
1
10
100
1000
Time t (s)
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CMS14
Cj – VR
Repetitive peak forward current
Ta = 25°C
(A)
f = 1 MHz
Repetitive peak forward current IFRM
Junction capacitance
Cj (pF)
500
100
10
1
10
100
Reverse voltage VR
(V)
f = 50 Hz
40
30
20
10
0
1
Average reverse power dissipation
PR (AV) (W)
(mA)
1
Reverse current IR
48 V
40 V
0.1
30 V
20 V
10 V
VR = 5 V
0.001
0.0001
0
20
40
60
80
10
100
PR (AV) – VR
0.4
Pulse test
0.01
Ta = 25°C
Number of cycles
I R – Tj
10
50
100
Junction temperature Tj
120
140
(°C)
0° α 360°
0.32
DC
VR
0.24
Conduction angle: α
Tj = 125°C
300°
240°
0.16
180°
120°
0.08
0
0
160
Rectangular
waveform
α = 60°
6
12
18
24
30
Reverse voltage VR
4
36
42
48
(V)
2018-10-16
CMS14
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