PCT2202UKZ Equivalent & Substitute Parts

Part Overview

The PCT2202UKZ is a digital temperature sensor manufactured by NXP USA Inc., designed for local temperature measurement across the -40°C to 125°C range with 11-bit resolution and I2C/SMBus output interface. The device is classified as obsolete, necessitating identification of functionally equivalent active alternatives for new designs and ongoing production requirements. Substitute parts must maintain compatibility with the original electrical specifications, communication protocol, and thermal operating range while offering active product status and continued manufacturer support.

Substiute Parts

PCT2202UKZ

NXP USA Inc.In Stock: 4388PCT2202UKZ Datasheet

Current PartRFQ

P3T1108UKZ

NXP USA Inc.In Stock: 1136P3T1108UKZ Datasheet

MFR RecommendedRFQ

MCP9844T-BE/MNY

Microchip TechnologyIn Stock: 6644MCP9844T-BE/MNY Datasheet

MFR RecommendedRFQ

MCP9844T-BE/MNYAA

Microchip TechnologyIn Stock: 1241MCP9844T-BE/MNYAA Datasheet

MFR RecommendedRFQ

MCP9844T-BE/MNYAB

Microchip TechnologyIn Stock: 6664MCP9844T-BE/MNYAB Datasheet

MFR RecommendedRFQ

TMP112AQDRLRQ1

Texas InstrumentsIn Stock: 53520TMP112AQDRLRQ1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PCT2202UKZ are selected based on the following critical parameters:

• Sensor Type: Digital, Local temperature measurement capability
• Temperature Range: Full -40°C to 125°C coverage
• Communication Protocol: I2C/SMBus interface compatibility
• Supply Voltage: Operating voltage range that encompasses or exceeds the original 1.65V ~ 1.95V specification
• Resolution: Minimum 11-bit resolution for equivalent measurement precision
• Accuracy: Temperature measurement accuracy within specified test conditions
• Mounting: Surface mount technology with compatible package footprint
• Product Status: Active manufacturing status with ongoing supplier support
• Compliance: RoHS3 compliance and REACH unaffected status

The substitute parts identified—MCP9844T-BE/MNY, MCP9844T-BE/MNYAA, MCP9844T-BE/MNYAB, and TMP112AQDRLRQ1—satisfy these core substitution criteria through equivalent functional performance and communication interface specifications.

Parameter Comparison

Engineering Selection Recommendations

MCP9844T-BE/MNY, MCP9844T-BE/MNYAA, MCP9844T-BE/MNYAB: These Microchip Technology variants are functionally equivalent across all three packaging options (Cut Tape, Tape & Reel, and standard). All three maintain active product status with high inventory availability (1,136 to 6,573 units). The devices provide I2C communication compatibility, full -40°C to 125°C temperature range coverage, and extended supply voltage range (1.7V ~ 3.6V). RoHS3 compliance and REACH unaffected status align with regulatory requirements. The primary design consideration is package footprint transition from 6-WLCSP to 8-TDFN, requiring PCB layout modification.

TMP112AQDRLRQ1: The Texas Instruments TMP112AQDRLRQ1 offers the highest accuracy specification (±0.3°C at 25°C) and 12-bit resolution, exceeding the original PCT2202UKZ performance. This device carries automotive-grade qualification (AEC-Q100) and is available in high volume (53,418 units). The extended supply voltage range (1.4V ~ 3.6V) provides additional design flexibility. Package transition to SOT-5X3 requires PCB layout modification. This option is suitable for applications requiring enhanced measurement precision and automotive reliability standards.

All substitute parts maintain RoHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original component.

Frequently Asked Questions (FAQ)

Q: Can the MCP9844T-BE variants be used as direct pin-for-pin replacements for the PCT2202UKZ?

A: No. While the MCP9844T-BE variants maintain I2C communication protocol compatibility and identical temperature range specifications, the package footprint differs (8-TDFN versus 6-WLCSP). PCB layout modification is required for implementation.

Q: What is the primary difference between MCP9844T-BE/MNY, MCP9844T-BE/MNYAA, and MCP9844T-BE/MNYAB?

A: The three variants differ only in packaging format: Cut Tape (CT) & Digi-Reel for MCP9844T-BE/MNY, Tape & Reel (TR) for MCP9844T-BE/MNYAA, and standard packaging for MCP9844T-BE/MNYAB. Electrical specifications and functional performance are identical across all three.

Q: Does the TMP112AQDRLRQ1 require different firmware or software implementation compared to the PCT2202UKZ?

A: Both devices use I2C/SMBus communication protocol. Register-level compatibility must be verified during integration, as command sets and register definitions may differ between manufacturers.

Q: What is the supply voltage consideration when substituting the PCT2202UKZ?

A: The original PCT2202UKZ operates at 1.65V ~ 1.95V. All substitute parts accept this voltage range: MCP9844T-BE variants operate at 1.7V ~ 3.6V, and TMP112AQDRLRQ1 operates at 1.4V ~ 3.6V. Existing power supply designs remain compatible.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitute parts—MCP9844T-BE/MNY, MCP9844T-BE/MNYAA, MCP9844T-BE/MNYAB, and TMP112AQDRLRQ1—carry RoHS3 compliance certification and REACH unaffected status, matching the original component's regulatory standing.

Q: Which substitute part offers the best accuracy specification?

A: The TMP112AQDRLRQ1 provides the highest accuracy at ±0.3°C (25°C) and ±1°C (-40°C ~ 125°C), compared to the original PCT2202UKZ accuracy of ±1°C (0°C ~ 85°C) and ±2°C (-40°C ~ 125°C). The MCP9844T-BE variants specify ±3°C maximum accuracy.