onsemi KA7818ETU
Standard Regulator Pos 18V 1A 3-Pin(3+Tab) TO-220 Rail
$ 0.349
Obsolete
Inventory History
3 month trend: +0.00%
CAD Models
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Alternate Parts
1 part available
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Alternate Parts
This Part
Alternate Parts
Price @ 1000
$ 0.349
$ 0.351
Stock
714,699
175,639,018
Authorized Distributors
2
6
Case/Package
TO-220-3
TO-220
Number of Pins
-
3
Number of Outputs
1
1
Max Output Current
1 A
1 A
Min Input Voltage
21 V
21 V
Max Input Voltage
33 V
33 V
Min Output Voltage
-
18 V
Max Output Voltage
-
-
Accuracy
4 %
4 %
Dropout Voltage
2 V
2 V
Power Supply Rejection Ratio (PSRR)
-
57 dB
Supply Chain
Country of OriginMainland China
Export Control Classification Number (ECCN) CodeEAR99
Harmonized Tariff Schedule (HTS) Code8542.39.00.60
Introduction Date2003-10-27
Lifecycle StatusObsolete (Last Updated: 7 months ago)
LTB Date2019-04-18
LTD Date2019-10-18
Related Parts
onsemiNCV7805BTG
Linear Voltage Regulator, 1 A, Ultra-High PSRR Vout: 5.0 V; TJ = -40°C to +125°C
onsemiMC7808ABTG
Linear Voltage Regulator, 1 A, 5 to 24 V, Positive Vout: 8.0 V; TJ = -40°C to +125°C
Descriptions
Descriptions of onsemi KA7818ETU provided by its distributors.
Standard Regulator Pos 18V 1A 3-Pin(3+Tab) TO-220 Rail
3-Terminal 1A Positive Voltage Regulator
Low voltage differential Regulator (LDO)
Fixed Positive Standard Regulator, 18V, BIPolar, PSFM3
KA7818 Tube Through Hole Over Temperature Short Circuit voltage regulator linear 2V 2.54mm 1A -40C~125C
IC REG LIN FIXED POS STD REG 18V
69dB(120Hz) 8mA positive electrode Fixed 1A 1 18V 21V 20V 35V 2V@ 1A (Typ) 360mV 360mV TO-220-3 Through hole mounting 9.4mm(height)
The KA78XXE/KA78XXAE series of three-terminal positive regulator are available in the TO-220/D-PAK package and with several fixed output voltages, making them useful in a wide range of applications. Each type employs internal current limiting, thermal shut down and safe operating area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents.
Manufacturer Aliases
onsemi has several brands around the world that distributors may use as alternate names. onsemi may also be known as the following names:
- ON Semiconductor
- ONS
- ONSEMICON
- ON SEM
- ON SEMICONDUCTO
- ON SEMICONDUCTORS
- ONSEMIC
- ON Semicondu
- OSC
- ONSE
- ON Semiconductor / Fairchild
- ON SEMICOND
- SCG
- ON Semiconductor Cor
- ON SEMICO
- ONSM
- onsemi / Fairchild
- ON SEMICONDUCTOR CORP
- MOT/ON SEMI
- Fairchild/ONSemiconductor
- ON Semiconductor Corporation
- ON4
- ON Semi - ON Semiconductor
- ON SEMICONDUCT
- ON-SEMI SCG
- ON Semiconductor Inc.
- onsemiconductor
- On Semiconductor Ltd
Inventory History
3 month trend: +0.00%
CAD Models
Download symbol, footprint, and 3D STEP
Alternate Parts
1 part available
Technical Specifications
Physical
Case/PackageTO-220-3
Contact PlatingTin
MountThrough Hole
Number of Terminals3
Weight1.8 g
Technical
Accuracy4 %
Dropout Voltage2 V
Max Input Voltage33 V
Max Junction Temperature (Tj)125 °C
Max Operating Temperature125 °C
Max Output Current1 A
Max Supply Voltage35 V
Min Input Voltage21 V
Min Operating Temperature-40 °C
Nominal Supply Current5.2 mA
Number of Circuits1
Number of Outputs1
Number of Regulators1
Output Current250 mA
Output TypeFixed
Output Voltage18 V
Output Voltage Accuracy4 %
PolarityPositive
Quiescent Current8 mA
Voltage Tolerance5 %
Dimensions
Height20.4 mm
Height - Seated (Max)20.4 mm
Length10.16 mm
Terminal Pitch2.54 mm
Width4.35 mm
Compliance
Environmental Classification
Lead FreeLead Free
REACH SVHCNo
RoHSCompliant
Compliance Statements