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

Infineon Technologies KP235C4115XTMA1

Name: KP235C4115XTMA1
Brand: Infineon Technologies
SKU: KP235C4115XTMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: KP235C4115XTMA1

Manufacturer:: Infineon Technologies

Category:: Pressure Sensors, Transducers

Package:: -

Datasheet:: KP235C4115XTMA1.pdf

Description:: KP235 - Analog Absolute Pressure

Quantity:: RFQ Add To RFQ list

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Inventory:12,000

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Product details

Overview

KP235C4115 from Infineon Technologies is an analog absolute pressure sensor IC based on capacitive MEMS sensing with monolithic BiCMOS signal conditioning. It delivers ratiometric voltage output (0.2 V to 4.7 V) across a 15–115 kPa pressure range, operates from −40 °C to +125 °C, and achieves ±1.2 kPa total accuracy. It is used in automotive barometric air pressure measurement for engine control and altitude compensation.

For engineers reviewing the KP235C4115 datasheet, KP235C4115 pinout, KP235C4115 application, or KP235C4115 equivalent, key selection criteria include calibrated analog transfer function, broken-wire detection capability, automotive-grade temperature range, and PG-DSOF-8-16 surface-mount package compatibility.

Technical Context

The KP235C4115 integrates a capacitive pressure-sensing element with on-chip BiCMOS signal conditioning, including amplifier, voltage reference, and ratiometric output driver. Its transfer function is factory-calibrated to map 15–115 kPa linearly to 0.2–4.7 V with supply voltage as reference.

It features built-in diagnostics: broken-wire detection triggers output saturation at <0.1 V or >4.8 V under open-circuit conditions, and clamping limits output to safe bounds during overvoltage or ESD events. No digital interface or configuration registers are present - it is a fixed-function analog sensor.

Key Specifications

Parameter	Value and Actual Design Meaning
Pressure Range	15 kPa to 115 kPa absolute - covers sea-level to ~15,000 m altitude, suitable for barometric and altimetric use.
Output Voltage	0.2 V to 4.7 V ratiometric - scales linearly with supply voltage; enables direct ADC interfacing without external scaling.
Total Accuracy	±1.2 kPa over full range and temperature - includes nonlinearity, hysteresis, repeatability, and thermal effects.
Operating Temperature	−40 °C to +125 °C - qualified for under-hood automotive environments and industrial enclosures.
Supply Voltage	4.5 V to 5.5 V - tight tolerance ensures stable reference for ratiometric output and minimizes supply-induced error.
Response Time	≤10 ms (90% step response) - sufficient for dynamic barometric correction in engine management systems.
Package	PG-DSOF-8-16 - 8-pin leadless SMD package with exposed thermal pad; RoHS-compliant "green" molding compound.

Pinout & Package

The KP235C4115 is housed in the PG-DSOF-8-16 package: an 8-terminal, leadless, surface-mount outline with exposed thermal pad (pin 8), optimized for high-reliability automotive PCB assembly and thermal dissipation.

Pin/Terminal	Circuit Role	Design Meaning
V_S	Supply Voltage Input	4.5–5.5 V power rail; serves as reference for ratiometric output and internal bias generation.
GND	Ground Reference	Analog ground return; must be low-impedance and separated from digital ground to preserve accuracy.
V_OUT	Analog Output	Ratiometric voltage output (0.2–4.7 V); drives ≤10 kΩ load with ≤10 mV error due to loading.
NC	No Connect	Internally unconnected; must remain floating or tied to GND per layout guidelines to avoid coupling noise.
NC	No Connect	Second no-connect terminal; electrically isolated and not bonded - no routing or soldering required.
NC	No Connect	Third no-connect terminal; identical isolation status as other NC pins; no functional impact if left unconnected.
NC	No Connect	Fourth no-connect terminal; unused bond pad; no electrical or thermal role in operation.
EPAD	Exposed Thermal Pad	Thermal and mechanical anchor; must be soldered to PCB copper pour for thermal stability and mechanical reliability.

Key Features

Feature	Design Value
Capacitive MEMS Sensing Element	Monolithic silicon diaphragm with integrated electrode structure; provides long-term stability and minimal hysteresis (<0.1 kPa).
Ratiometric Analog Output	Output voltage directly proportional to supply voltage; eliminates need for precision external reference in ADC systems.
Broken-Wire Detection	Outputs <0.1 V or >4.8 V when V_OUT line is open; enables fail-safe diagnostics in safety-critical automotive ECUs.
Integrated Clamping Protection	Internal diodes limit V_OUT to safe bounds during transient overvoltage or ESD; prevents downstream ADC damage.
Automotive Qualification	AEC-Q100 Grade 1 compliant; validated for 1000+ hours at 125 °C and 1000 thermal cycles (−40/+125 °C).

Applications

Engine Control Unit (ECU)

Portable Altimeter

Use Scenario: Real-time barometric pressure input for air mass calculation and boost control in turbocharged gasoline engines.

IC Role / Device Role / Timing Role: Absolute pressure transducer providing analog feedback to ECU's ADC subsystem with ≤10 ms latency.

Use Value: Enables precise fuel injection and ignition timing adjustments across altitude changes, improving emissions compliance and torque consistency.

Use Scenario: Altitude tracking in handheld outdoor navigation devices using ambient air pressure.

IC Role / Device Role / Timing Role: Primary barometric sensor feeding calibrated analog voltage to low-power microcontroller ADC.

Use Value: Delivers ±10 m altitude resolution (at sea level) with single-supply 5 V operation and no calibration firmware overhead.

Weather Station Sensor Node

Medical Ventilator Pressure Monitor

Use Scenario: Long-term atmospheric pressure logging in battery-powered IoT weather stations deployed outdoors.

IC Role / Device Role / Timing Role: Low-drift analog pressure front-end with built-in diagnostics for unattended field operation.

Use Value: Maintains ±1.2 kPa accuracy over −40 °C to +70 °C operating range without periodic recalibration or temperature compensation code.

Use Scenario: Monitoring patient airway pressure in Class II medical ventilators requiring fault-detection capability.

IC Role / Device Role / Timing Role: Safety-critical pressure transducer with broken-wire detection and AEC-Q100 reliability validation.

Use Value: Provides immediate open-circuit alert via saturated output, supporting IEC 62304 safety requirements for ventilator pressure monitoring loops.

Availability

KP235C4115 is available at Aetrix Electronics and suitable for automotive engine control, portable altimeters, weather station sensor nodes, and medical ventilator pressure monitors requiring stable component supply, long-lifecycle support, and AEC-Q100-qualified performance.

Supply support for KP235C4115 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 AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and sensor solutions, with global R&D and manufacturing infrastructure.

The KP235C4115 belongs to Infineon's BAP (Barometric Air Pressure) sensor family, designed specifically for high-accuracy, automotive-grade absolute pressure measurement in engine management, climate control, and safety-critical environmental monitoring systems.

FAQ

Does the KP235C4115 require external calibration or trimming?

No. The KP235C4115 is fully factory-calibrated across its 15–115 kPa range and −40 °C to +125 °C temperature span. Its transfer function (0.2–4.7 V output) is laser-trimmed during production, eliminating need for system-level calibration or software compensation in typical applications.

What is the purpose of the four NC pins on the PG-DSOF-8-16 package?

The four NC pins are unconnected die bond pads with no internal circuit connection. They serve mechanical and layout purposes only - maintaining symmetry, aiding thermal uniformity, and enabling standardized PCB footprint reuse across Infineon's sensor portfolio. They must remain unconnected or grounded per layout guidelines.

Can the KP235C4115 operate from a 3.3 V supply?

No. The KP235C4115 requires 4.5–5.5 V supply voltage per its absolute maximum and operating specifications. Operation below 4.5 V risks incomplete internal biasing, degraded accuracy, and failure of broken-wire detection functionality. A dedicated 5 V LDO is recommended.

How does broken-wire detection manifest at the output pin?

When the V_OUT trace is open-circuited, the output saturates to <0.1 V (low-fault) or >4.8 V (high-fault), depending on internal state. This deliberate saturation is detectable by any standard microcontroller ADC, enabling immediate fault flagging without additional external circuitry.

KP235C4115XTMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: -

Packaging:: Bulk

Product Status:: Obsolete

Applications:: -

Pressure Type:: -

Operating Pressure:: -

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Output:: -

Accuracy:: -

Voltage - Supply:: -

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Termination Style:: -

Maximum Pressure:: -

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Supplier Device Package:: -

KP235C4115XTMA1 FAQ

1.How can I place an order for KP235C4115XTMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for KP235C4115XTMA1 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 KP235C4115XTMA1 reliable?

The price and inventory of KP235C4115XTMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KP235C4115XTMA1 is usually 5 days.

3.What payment methods are accepted for KP235C4115XTMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KP235C4115XTMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for KP235C4115XTMA1?

KP235C4115XTMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your KP235C4115XTMA1 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 KP235C4115XTMA1?

For technical support, including KP235C4115XTMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KP235C4115XTMA1 requirements.

6.How does Aetrix verify that KP235C4115XTMA1 is sourced from the original manufacturer or authorized distributors?

All KP235C4115XTMA1 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 KP235C4115XTMA1 meets industry standards.

7.What is the process for return or replacement of KP235C4115XTMA1?

All KP235C4115XTMA1 units undergo pre-shipment inspection (PSI). If there is an issue with KP235C4115XTMA1, 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 KP235C4115XTMA1 part is unused and in its original packaging.

Return procedure for KP235C4115XTMA1:

1.Submit a request within 90 days.

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

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