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UMD05-0402 の電気的特性と機能

UMD05-0402のメーカーはUMDです、この部品の機能は「Small Surface Mount Device TVS」です。


製品の詳細 ( Datasheet PDF )

部品番号 UMD05-0402
部品説明 Small Surface Mount Device TVS
メーカ UMD
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UMD05-0402 Datasheet, UMD05-0402 PDF,ピン配置, 機能
_______________________________________________________________________________________
UNITED MICRO DEVICE INC. UMD05-0402
_______________________________________________________________________________________
PKCSP0402 Single Line TVS Diode for ESD Protection
Description
TVS diodes are designed to replace multilayer
varistors (MLVs) in portable applications such as
cell phones, notebook computers, and PDA’s.
They offer superior electrical characteristics such
as lower clamping voltage and no device
degradation when compared to MLVs.
The UMD05-0402 is a Uni-Directional TVS that
is designed to provide high overvoltage protection
by clamping action and have instantaneous
response to transient overvoltages. The
PKCSP0402 is a very small package which
allows space saving on high density printed
circuit board and also gives the designer the
flexibility to protect one line in applications
where arrays are not practical.
Small Surface Mount Device TVS
PKCSP0402 Pin Configuration
1
2
Pin Description
1 Cathode
2 Anode
Features
* Solid-state silicon avalanche technology
* PKCSP0402 package
* Uni-Directional protection
* Protects one I/O or Power line
* 150 Watts peak pulse power (tp = 8/20µs)
* Working voltage: 5V
* Low clamping factor Vcl/Vbr
* Low leakage current
* Full RoHS compliance
* Complies with the following standards:
- IEC 61000-4-2 (ESD) Air-15kv, Contact-8kv
- IEC 61000-4-4 (EFT) (5/50ns)
- IEC 61000-4-5 (Surge) (8/20µs)
Mechanical Characteristics
* Molded PKCSP0402 package
* Weight 1.369 milligrams (Approximate)
* Available in Lead-Free Gold Plating
* Solder Reflow Temp: Pure-Tin (Sn), 260-270ºC
* Consult Factory for Leaded Device Availability
* Flammability Rating UL 94V-0
* 8mm Tape and Reel per EIA Standard 481
* Device Marking: Marking Code,
Pin one defined by DOT
Applications
* Cellular Handset
* PDA
* Notebook
* Digital Camera
* Wifi Phone
_______________________________________________________________________________________
Rev 15/07/10
- 1 - ©United Micro Device Inc

1 Page





UMD05-0402 pdf, ピン配列
_______________________________________________________________________________________
UNITED MICRO DEVICE INC. UMD05-0402
_______________________________________________________________________________________
PKCSP0402 Single Line TVS Diode for ESD Protection
Electrical Characteristics Graphs
10000
PEAK PULSE POWER vs. PULSE TIME
POWER DERATING CURVE
100
90
80
1000
70
60
50
40
30
100 20
10
0.1
1 10 100
Pulse Duration – tp (µs)
10
0
0
1000
25 50 75 100 125
Ambient Temperature – TA (°C)
CAPACITANCE vs. REVERSE VOLTAGE
PULSE WAVEFORM (8/20µs)
100
FOR UMD05-0402
100
90
80 80
70
60 60
50
40 40
30
20
10
0
05
25
20
10 15 20 25 30
Time (µs)
00
12
3
Reverse Voltage – VR (V)
CLAMPING VOLTAGE vs. PEAK PULSE CURRENT FOR UMD05-0402
150
4
20
15
10
5
0 0 1 2 3 4 5 6 7 8 9 10 11 12
___________________________________P_e_a_k_P_u_ls_e_C_u_r_re_n_t __Ip_p__(A_)_________________________________
Rev 15/07/10
- 3 - ©United Micro Device Inc


3Pages


UMD05-0402 電子部品, 半導体
_______________________________________________________________________________________
UNITED MICRO DEVICE INC. UMD05-0402
_______________________________________________________________________________________
PKCSP0402 Single Line TVS Diode for ESD Protection
Circuit Board Layout Recommendations
Good circuit board layout is critical for creating
an effective surge suppression circuit. The
following PCB guidelines are recommended to
enhance the performance of a TVS device:
Place the TVS near the input terminals or
connectors to restrict transient coupling.
Minimize the path length between the TVS
and the protected line.
The ESD transient return path to ground
should be kept as short as possible.
Place a TVS and decoupling capacitor
between power and ground of components
that may be vulnerable to electrostatic
discharges to the ground plane.
Minimize all conductive loops including
power and ground loops.
Use multilayer boards when possible.
Minimize interconnecting line lengths.
Never run critical signals near board edges.
Fill unused portions of the PCB with
ground plane.
Poor PCB Layout
TVS
IC
TVS
PCB
Poor PCB Layout
TVS
IC
TVS
PCB
Poor PCB Layout
Oscillator
Clock
IC
PCB
TVS
Reset
Gold Plating Finish
Gold Plating has become one of the industry
standards for lead-free finishes. Gold plating is
highly valued for its physical properties in many
applications and the ability to resist corrosion and
oxides forming on the surface, which could
prevent conductivity in applications. Gold plating
provides good wear resistance and contact
resistance in low-pressure applications.
Excellent conductivity and the ability to
withstand the elevated temperatures and long
dwell times required for lead-free reflow are two
more benefits of gold plating.
Good PCB Layout
IC
PCB
TVS
TVS
Good PCB Layout
IC
PCB
TVS
TVS
Good PCB Layout
Oscillator
Clock
IC
Reset TVS
PCB
_______________________________________________________________________________________
Rev 15/07/10
- 6 - ©United Micro Device Inc

6 Page



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部品番号部品説明メーカ
UMD05-0402

Small Surface Mount Device TVS

UMD
UMD


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