Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Sensors, Transducers > Pressure Sensors, Transducers

Infineon Technologies KPY52-AK

Name: KPY52-AK
Brand: Infineon Technologies
SKU: KPY52-AK
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: KPY52-AK

Manufacturer:: Infineon Technologies

Category:: Pressure Sensors, Transducers

Package:: TO-8 Style, 8 Leads

Datasheet:: KPY52-AK.pdf

Description:: SENSOR 8.7PSIA 0.2" .045V TO8-5

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:1,689

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

KPY52-AK from Infineon Technologies is a silicon piezoresistive absolute pressure sensor with 0–0.6 bar full-scale range, 11.0–24.0 mV/V·bar sensitivity, ±0.15% V_fin linearity (best-fit straight line), integrated 2 kΩ silicon temperature sensor (pins 4 & 5), and TO-8-5 metal can package. It delivers high long-term stability and low hysteresis for precision barometric and vacuum monitoring in industrial instrumentation.

For engineers reviewing the KPY52-AK datasheet, KPY52-AK pinout, KPY52-AK application, or KPY52-AK equivalent, key selection criteria include absolute pressure range (0–0.6 bar), bridge resistance (4–8 kΩ), temperature coefficient of output voltage (−0.19 to −0.12 %/K), offset voltage (±25 mV), and capillary tube interface for sealed reference chamber integration.

Technical Context

The KPY52-AK uses a monocrystalline silicon diaphragm with four diffused piezoresistors forming a Wheatstone bridge, excited by a 5 V supply. Its output is ratiometric (mV/V·bar), requiring external signal conditioning for analog voltage or current output.

Pin 1 is a capillary tube for absolute pressure reference; pins 2 and 6 are bridge excitation inputs (+VIN/−VIN); pins 3 and 7 are differential bridge outputs (−VOUT/+VOUT); pins 4 and 5 form a 2 kΩ NTC-type temperature sensor at 25 °C; pin 8 is NC. The device operates from −40 °C to +125 °C with 12 V absolute max supply.

Key Specifications

Parameter	Value and Actual Design Meaning
Pressure Range	0 to 0.6 bar absolute - defines full-scale input for barometric or low-vacuum sensing applications
Sensitivity	11.0–24.0 mV/V·bar - determines minimum detectable pressure change per excitation volt
Bridge Resistance	4–8 kΩ - sets excitation current and thermal self-heating limits under 5 V bias
Linearity Error	±0.15% of full-scale output - constrains calibration complexity for <0.2% total error systems
Offset Voltage	±25 mV at P = P₀ - requires trimming or digital compensation in precision analog front-ends
Temp. Coeff. of V_fin	−0.19 to −0.12 %/K - mandates temperature compensation for <0.5% span drift over −40 to +125 °C
Operating Temp.	−40 to +125 °C - enables deployment in automotive engine bay or industrial control enclosures

Pinout & Package

Package: TO-8-5 metal can with glass-sealed capillary tube (Pin 1), 8-terminal configuration, 4.1 g mass, 17.3 mm height, 10.92 mm diameter.

Pin/Terminal	Circuit Role	Design Meaning
1	Capillary tube	Sealed reference chamber inlet for absolute pressure measurement
2	+VIN	Positive bridge excitation input - connects to regulated 5 V supply
3	−VOUT	Negative differential bridge output - used with instrumentation amplifier
4	Temperature sensor (1)	One terminal of integrated 2 kΩ silicon NTC sensor at 25 °C
5	Temperature sensor (2)	Second terminal of same 2 kΩ sensor - enables 2-wire RTD-style compensation
6	−VIN	Negative bridge excitation input - completes Wheatstone bridge bias path
7	+VOUT	Positive differential bridge output - paired with Pin 3 for ratiometric readout
8	Not connected	No internal connection - must remain floating or grounded per layout guidelines

Key Features

Feature	Design Value
Fatigue-free monocrystalline silicon diaphragm	Enables >1 million load cycles without performance degradation in continuous monitoring
Built-in silicon temperature sensor (2 kΩ @ 25 °C)	Permits on-chip thermal compensation without external thermistor placement or routing
Low pressure hysteresis (±0.1% V_fin)	Reduces calibration uncertainty in cyclic pressure applications like HVAC damper control
High long-term stability	Minimizes annual recalibration need in environmental monitoring and metrology equipment
Fast response time	Supports dynamic pressure tracking up to ~1 kHz bandwidth in closed-loop control systems

Applications

Barometric Weather Stations

Industrial Vacuum Monitoring

Use Scenario: Measuring atmospheric pressure variations for weather forecasting and altitude estimation.

IC Role / Device Role / Timing Role: Absolute pressure transducer providing ratiometric mV output referenced to sealed vacuum cavity.

Use Value: ±0.15% linearity and −40 to +125 °C operation ensure stable readings across outdoor temperature extremes.

Use Scenario: Monitoring vacuum levels in semiconductor process chambers or packaging equipment.

IC Role / Device Role / Timing Role: Low-range absolute sensor interfaced to 24-bit ADC with on-board temperature compensation.

Use Value: 0–0.6 bar range and fast response enable real-time detection of leak rates below 10⁻³ mbar/s.

Medical Respiratory Devices

Automotive Cabin Pressure Control

Use Scenario: Sensing airway pressure in CPAP and ventilator systems during patient breathing cycles.

IC Role / Device Role / Timing Role: Primary pressure feedback element in closed-loop pressure regulation loop.

Use Value: Low hysteresis (±0.1% V_fin) ensures repeatable pressure delivery across inhalation/exhalation transitions.

Use Scenario: Regulating cabin pressure in electric vehicle HVAC systems during rapid altitude changes.

IC Role / Device Role / Timing Role: Absolute reference sensor compensating for ambient barometric shifts during ascent/descent.

Use Value: Integrated 2 kΩ temperature sensor allows single-chip thermal correction without added BOM cost.

Equivalent & Alternatives

The following parts are listed as comparable options for similar absolute pressure sensing applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MPX5700A	70 kPa range (0–70 kPa ≈ 0–0.7 bar), integrated signal conditioning, 5 V ratiometric output	Delivers amplified 0.2–4.8 V output; eliminates external op-amp stage required for KPY52-AK	Select when board space or design cycle time constraints favor integrated signal chain over discrete bridge optimization
MS5837-02BA	I²C digital output, 2 bar range, 0.2 mbar resolution, built-in ADC and compensation ROM	Provides calibrated digital pressure/temperature data; no analog signal conditioning or calibration firmware needed	Select when microcontroller has I²C interface and system-level calibration overhead must be minimized

Compared with MPX5700A and MS5837-02BA, the KPY52-AK offers superior long-term stability and lower hysteresis but requires external amplification and temperature compensation - making it optimal for high-accuracy analog systems where calibration infrastructure already exists.

Availability

KPY52-AK is available at Aetrix Electronics and suitable for barometric weather stations, industrial vacuum monitoring, medical respiratory devices, and automotive cabin pressure control requiring stable component supply across extended product lifecycles.

Supply support for KPY52-AK includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, sensor, and automotive ICs, with global manufacturing and quality certification to ISO/TS 16949 and AEC-Q200.

The KPY series belongs to Infineon's legacy silicon piezoresistive pressure sensor family, designed for high-stability absolute pressure measurement in industrial, medical, and environmental instrumentation where long-term repeatability outweighs integration convenience.

FAQ

What is the recommended excitation voltage for KPY52-AK?

The KPY52-AK is characterized at 5 V supply, with absolute maximum rating of 12 V. Operating at 5 V ensures specified sensitivity (11.0–24.0 mV/V·bar) and thermal drift (−0.19 to −0.12 %/K). Higher excitation increases output but also self-heating error and power dissipation in the 4–8 kΩ bridge.

How is the capillary tube (Pin 1) used in absolute pressure measurement?

Pin 1 is a sealed glass-metal capillary tube that houses a vacuum reference cavity bonded to the silicon diaphragm. This establishes a fixed zero-pressure reference, enabling true absolute pressure measurement relative to perfect vacuum - critical for barometric and altitude-sensing applications.

Can the integrated temperature sensor be used for full compensation of pressure output?

Yes - the 2 kΩ silicon temperature sensor (Pins 4 & 5) provides proportional resistance change with temperature. When combined with known TCV_fin (−0.19 to −0.12 %/K) and TCV₀ (±0.05 %/K), it enables first-order linear compensation of both span and offset drift in analog or digital domains.

Is KPY52-AK RoHS compliant and lead-free?

Yes - KPY52-AK conforms to RoHS Directive 2011/65/EU and is manufactured with lead-free terminations and packaging. The TO-8-5 metal can housing uses Pb-free solder preforms and complies with JEDEC J-STD-020 moisture sensitivity level (MSL) requirements for through-hole assembly.

KPY52-AK Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: TO-8 Style, 8 Leads

Packaging:: Bulk

Product Status:: Active

Applications:: Board Mount

Pressure Type:: Absolute

Operating Pressure:: 8.7PSI (60kPa)

Output Type:: Wheatstone Bridge

Output:: 0 mV ~ 45 mV

Accuracy:: -

Voltage - Supply:: 12V

Port Size:: Male - 0.2" (5.1mm) Tube

Port Style:: Barbless

Features:: -

Termination Style:: PC Pins

Maximum Pressure:: 87.02PSI (600kPa)

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-8-5

KPY52-AK FAQ

1.How can I place an order for KPY52-AK through Aetrix?

Please submit a Request for Quotation (RFQ) for KPY52-AK on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for KPY52-AK reliable?

The price and inventory of KPY52-AK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KPY52-AK is usually 5 days.

3.What payment methods are accepted for KPY52-AK?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KPY52-AK transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for KPY52-AK?

KPY52-AK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your KPY52-AK order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for KPY52-AK?

For technical support, including KPY52-AK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KPY52-AK requirements.

6.How does Aetrix verify that KPY52-AK is sourced from the original manufacturer or authorized distributors?

All KPY52-AK products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that KPY52-AK meets industry standards.

7.What is the process for return or replacement of KPY52-AK?

All KPY52-AK units undergo pre-shipment inspection (PSI). If there is an issue with KPY52-AK, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The KPY52-AK part is unused and in its original packaging.

Return procedure for KPY52-AK:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…

2026-07-17 Raspberry Pi Alternatives: Chip-Level Comparison, Compatibility and Replacement Guide

Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…