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Flash Memory


Audio Special Purpose

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Clock/Timing - Clock Buffers, Drivers

Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers

Clock/Timing - Delay Lines

Clock/Timing - IC Batteries

Clock/Timing - Programmable Timers and Oscillators

Clock/Timing - Real Time Clocks

Data Acquisition - ADCs/DACs - Special Purpose

Data Acquisition - Analog Front End (AFE)

Data Acquisition - Analog to Digital Converters (ADC)

Data Acquisition - Digital Potentiometers

Data Acquisition - Digital to Analog Converters (DAC)

Data Acquisition - Touch Screen Controllers

Embedded - CPLDs (Complex Programmable Logic Devices)

Embedded - DSP (Digital Signal Processors)

Embedded - FPGAs (Field Programmable Gate Array)

Embedded - FPGAs (Field Programmable Gate Array) with Microcontrollers

Embedded - Microcontroller, Microprocessor, FPGA Modules

Embedded - Microcontrollers

Embedded - Microcontrollers - Application Specific

Embedded - Microprocessors

Embedded - PLDs (Programmable Logic Device)

Embedded - System On Chip (SoC)

Interface - Analog Switches - Special Purpose

Interface - Analog Switches, Multiplexers, Demultiplexers

Interface - CODECs

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Interface - Direct Digital Synthesis (DDS)

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Interface - Filters - Active

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Interface - Serializers, Deserializers

Interface - Signal Buffers, Repeaters, Splitters

Interface - Signal Terminators

Interface - Specialized

Interface - Telecom

Interface - UARTs (Universal Asynchronous Receiver Transmitter)

Interface - Voice Record and Playback

Linear - Amplifiers - Audio

Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Linear - Amplifiers - Special Purpose

Linear - Amplifiers - Video Amps and Modules

Linear - Analog Multipliers, Dividers

Linear - Comparators

Linear - Video Processing

Logic - Buffers, Drivers, Receivers, Transceivers

Logic - Comparators

Logic - Counters, Dividers

Logic - FIFOs Memory

Logic - Flip Flops

Logic - Gates and Inverters

Logic - Gates and Inverters - Multi-Function, Configurable

Logic - Latches

Logic - Multivibrators

Logic - Parity Generators and Checkers

Logic - Shift Registers

Logic - Signal Switches, Multiplexers, Decoders

Logic - Specialty Logic

Logic - Translators, Level Shifters

Logic - Universal Bus Functions

Memory - Batteries

Memory - Configuration Proms for FPGAs

Memory - Controllers

PMIC - AC DC Converters, Offline Switchers

PMIC - Battery Chargers

PMIC - Battery Management

PMIC - Current Regulation/Management

PMIC - Display Drivers

PMIC - Energy Metering

PMIC - Full, Half-Bridge Drivers

PMIC - Gate Drivers

PMIC - Hot Swap Controllers

PMIC - Laser Drivers

PMIC - LED Drivers

PMIC - Lighting, Ballast Controllers

PMIC - Motor Drivers, Controllers

PMIC - OR Controllers, Ideal Diodes

PMIC - PFC (Power Factor Correction)

PMIC - Power Distribution Switches, Load Drivers

PMIC - Power Management - Specialized

PMIC - Power Over Ethernet (PoE) Controllers

PMIC - Power Supply Controllers, Monitors

PMIC - RMS to DC Converters

PMIC - Supervisors

PMIC - Thermal Management

PMIC - V/F and F/V Converters

PMIC - Voltage Reference

PMIC - Voltage Regulators - DC DC Switching Controllers

PMIC - Voltage Regulators - DC DC Switching Regulators

PMIC - Voltage Regulators - Linear

PMIC - Voltage Regulators - Linear + Switching

PMIC - Voltage Regulators - Linear Regulator Controllers

PMIC - Voltage Regulators - Special Purpose

Specialized ICs






Power Supply

Smart Power Module

SCR,GTO and Diode


Darlington Transistors

RF Modules




Servo drive & amplifier & Servo

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Transistor Module

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Contactor & Breaker

Elevator Board

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Bipolar transistors


Carbon Film Resistors

Cement Resistors

Chassis Mount Resistors

Chip Resistor - Surface Mount

Current Sense Resistors

Fusible Chip Resistor

High Precision & Low TCR SMD Resistors

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LED Strip Resistors

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Metal Alloy Resistors

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Metal Glaze Resistors

Metal Oxide Film Resistors

Metal Oxide Resistors

NTC Thermistors

PTC Thermistors


Potentiometers & Variable Resistors

Precision Potentiometer

Resistor Networks & Arrays

Resistor Networks & Arrays (TH)

Ultra Low Resistors (SMD)

Variable Resistors


Wirewound Resistors


Aluminum Electrolytic Capacitors - SMD

CL21 Capacitor

Ceramic Disc Capacitors

High Voltage Capacitors

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Multilayer Ceramic Capacitors MLCC - Leaded

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Polyester Film Capacitors

Solid Polymer Electrolytic Capacitor

Supercapacitors & Ultracapacitors

Suppression Capacitors

Tantalum Capacitors

Trimmers, Variable Capacitors

Inductors & Ferrite Beads & Transformers


Current Transformers

General Inductors (TH)

HF Inductors

Inductors (SMD)

LINE Filter

Power Inductors

Power Transformer

RJ45 Transformer

Radial Inductor (TH)

The circular inductors





Ceramic Resonators

DIP Oscillators(XO)

Radial Cylinder Crystals

SAW Resonators

SMD Crystals

SMD Oscillators(XO)


AV Connectors

Audio & Video Connectors

Banana and Tip Connectors

Card Edge Connectors

Circular Connectors

Connector - Card Sockets


Connectors - Accessories

Connectors - Housings


D-Sub Connectors

Ethernet Connectors/Modular Connectors

FFC, FPC (Flat Flexible) Connectors

Fiber Optic Connectors

IC & Component Sockets

LED Light Pipes

Mezzanine Connectors (Board to Board)

PCB Connectors - Headers, Male Pins

PCB Connectors - Headers, Receptacles, Female Sockets

PCB Connectors - Housings

Power Connectors

RF Connectors/Coaxial Connectors

Shunts & Jumpers

Terminal Blocks - Accessories

Terminal Blocks - Barrier Blocks

Terminal Blocks - Din Rail, Channel

Terminal Blocks - Headers, Plugs and Sockets


Test Clips

Test Points/Test Rings

USB Connectors

Unspecified Connectors

Screw-type wiring

Spring-type wiring

Pluggable Terminal Blocks

Through-wall Terminal Blocks

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Category: Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Description: Dual Operational Amplifier

Price range ($)

2 Suppliers

0.22200 0.50000

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  • KA2904 Dual Operational Amplifier
Part Number Seller's Name Stock Brand Package/Case Date Code Description Price
  • KA2901

    Utsource 190920 ST DIP SOP 95+ Quad Comparator Inquiry

    Xing Sheng Electronics Co.,Ltd. 100 SAMSUNG DIP14 95+ US $0.33

    JIE RONG Electronics Co.,Ltd 25 FSC DIP14 02+ US $0.37

  • KA29010

    Utsource 39831 SAMSUNG SOP14 33+ US $2.20

    JIE RONG Electronics Co.,Ltd 360 SAMSUNG SOP14 33+ US $1.04

  • KA2901D

    Utsource 190920 SAMSUNG SOP14 96 Quad Comparator Inquiry

    Ming Xin Da Technology Co.,Ltd 2376 FAIRCHILD SOP-14 01+ US $0.13

    LIAN FENG Business 5695 FIAR SOP14 0004+ US $0.15

    Utsource Original Store 14526 FAIRCHILD SOP-14 01+ US $0.48

  • KA2901DMTF

    Utsource 190920 FSC SOP8 1029+ COMPARATOR QUAD 14-SOP Inquiry

  • KA2901DTF

    Utsource 190920 SAMSUNG SOP14 - Quad Comparator; Package: SOP; No of Pins: 14; Container: Tape & Reel Inquiry

    Jia Xing Chuang Da Technology Co.,Ltd. 198 SAMSUNG SOP 01+ You deserve it US $0.16

    Utsource Original Store 12348 SAMSUNG SOP 01+ You deserve it US $0.17

  • KA2901M

    Utsource 190920 FAIRCHILD SOP-14 04+ Inquiry

    Tuo Li Tong Bo Electronics Co.,Ltd. 300 FAIRCHILD SOP-14 04+ US $0.22

  • KA2902

    Utsource 190920 SAMSUNG DIP SOP 327B Quad Operational Amplifier Inquiry

    Xing Sheng Electronics Co.,Ltd. 100 SAMSUNG DIP14 327B US $0.44

  • KA2902D

    Utsource 190920 SANYO SOP-14 98+ Dual Operational Amplifier; Package: SOP; No of Pins: 14; Container: Rail Inquiry

    Tuo Li Tong Bo Electronics Co.,Ltd. 300 FAIRCHILD SOP-14 01+ IC OPAMP GP 4 CIRCUIT 14SOP US $0.22

  • KA2902DMTF

    Utsource 207050 On Semiconductor 14-SOIC (0.154", 3.90mm Width) - General Purpose Amplifier 4 Circuit 14-SOP Inquiry

  • KA2902DTF

    Utsource 190920 SAM SOP 05+ Dual Operational Amplifier; Package: SOP; No of Pins: 14; Container: Tape & Reel US $0.32

    Yue Hong Fa Electronics Co.,Ltd. 2000 ON/FAIRCHILD SOP14 - US $0.44

  • KA2903

    Utsource 190920 NEC SMD8 98+ Dual Differential Comparator US $1.30

    Xing Sheng Electronics Co.,Ltd. 150 SAMSUNG DIP8 9432 IC COMPARATOR DUAL DIFF 8-DIP US $0.22


  • KA2903D

    Utsource 190920 SAMSUNG SOP-8 - Dual Comparator; Package: SOIC; No of Pins: 8; Container: Rail Inquiry

    Tuo Li Tong Bo Electronics Co.,Ltd. 1000 FAIRCHILD SOP-8 04+ IC COMPARATOR DUAL DIFF 8-SOP US $0.22

  • KA2903DM

    Utsource 190920 FAIRCHILD SOP-8 04+ Inquiry

  • KA2903DMTF

    Utsource 207096 On Semiconductor 8-SOIC (0.154", 3.90mm Width) - Comparator Differential 8-SOIC Inquiry

  • KA2903DTF

    Utsource 190920 ROHM SOP 2009+ COMPARATOR DUAL DIFF 8-SOP Inquiry

    ZJW Co. Ltd 233 FAIRCHILD SOP8 1307+ US $0.13

    zhuo yi Technology Co.,Ltd. 14690 FSC SOP8 13+ IC COMPARATOR DUAL DIFF 8-SOP US $0.37

    Chang Yi Electronic Business Department 2690 FSC SOP8 2009PB IC COMPARATOR DUAL DIFF 8-SOP US $0.13

  • KA2903M

    Jia Xing Chuang Da Technology Co.,Ltd. 2406 FSC DIP 07+PB You deserve it US $0.47

    Utsource 48288 FSC DIP 07+PB IC COMPARATOR DUAL DIFF US $0.44

    Utsource Original Store 14556 FSC DIP 07+PB You deserve it US $0.50

  • KA2904

    Utsource 190920 SAMSUNG DIP-8 98+ Dual Operational Amplifier US $0.50

    Xing Sheng Electronics Co.,Ltd. 150 FAI DIP8 01+ IC OPAMP GP 2 CIRCUIT 8DIP US $0.22

  • KA2904D

    Utsource 190920 SAMSUNG SOP8 9851 Dual Operational Amplifier; Package: SOIC; No of Pins: 8; Container: Rail Inquiry

    Tuo Li Tong Bo Electronics Co.,Ltd. 200 FAIRCHILD SOP-8 01+ IC OPAMP GP 2 CIRCUIT 8SOIC US $0.22

  • KA2904DMTF

    Utsource 207050 On Semiconductor 8-SOIC (0.154", 3.90mm Width) - General Purpose Amplifier 2 Circuit 8-SOIC Inquiry

  • KA2904DTF

    Utsource 190920 SAMSUNG SMD 98 Dual Operational Amplifier; Package: SOIC; No of Pins: 8; Container: Tape & Reel US $0.18

    Feng Wei Da Electronics Co.,Ltd. 288 SAMSDNG SOP8 9840+ IC OPAMP GP 2 CIRCUIT 8SOIC US $0.21

    Utsource Original Store 12438 SAMSDNG SOP8 9840+ IC OPAMP GP 2 CIRCUIT 8SOIC US $0.74


KA2904 has several brands around the world that may have alternate names for KA2904 due to regional differences or acquisition. KA2904 may also be known as the following names:

  • ST
  • FSC
  • FIAR
  • On Semiconductor
  • SAM
  • NEC
  • ON Semiconductor
  • ROHM
  • FAI

All sellers


Brand new


Certified preowned




Third Party



Part Number Product Description Summary Price Buy



5.0 out of 5 stars

1 star 0.1%
2 star 0%
3 star 0.2%
4 star 0.3%
5 star 99.3%

Total products: 2399987

Total sales: 5170563

Average lead time: 38.93 Hour

Delivery times (Express): 71782Deliverytimes

Delivery times (Post office): 8185

KA2904 Dual Operational Amplifier


Utsource certified used partsUsed and refurbished parts offered by Utsource are guaranteed can be used normally.



Dual Operational Amplifier

≥1: US $0.50000 US $0.45000

More: Inquiry

Xing Sheng Electronics Co.,Ltd.


5.0 out of 5 stars

1 star 0.2%
3 star 0.2%
4 star 0.6%
5 star 99%

Total products: 50974

Total sales: 57881

Average lead time: 50.29 Hour

Delivery times (Express): 5054Deliverytimes

Delivery times (Post office): 491



Third-party used partsUsed parts offered by the third-party




≥1: US $0.22200 US $0.19980

More: Inquiry

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