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SE95U,025 Temperature Sensor Equivalent & Substitute Parts
Part Overview
The SE95U,025 is a digital temperature sensor manufactured by NXP USA Inc., designed for local temperature measurement across a -55°C to 125°C range with 13-bit resolution and I2C/SMBus output interface. The product is classified as obsolete, necessitating identification of active equivalent components that maintain functional and electrical compatibility for new designs and production continuity.
Substiute Parts
Key Parameters
| Parameter | SE95U,025 |
|---|---|
| Manufacturer | NXP USA Inc. |
| Sensor Type | Digital, Local |
| Sensing Temperature Range | -55°C ~ 125°C |
| Output Type | I2C/SMBus |
| Resolution | 13 bit |
| Voltage Supply | 2.8V ~ 5.5V |
| Accuracy | ±1°C (-25°C ~ 100°C) / ±3°C (-55°C ~ 125°C) |
| Features | Output Switch, Programmable Limit, Shutdown Mode |
| Mounting Type | Surface Mount |
| Package | Die |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution of the SE95U,025 is based on the following critical parameters:
- Output Interface: I2C/SMBus serial communication protocol
- Temperature Range: Operating capability across -55°C to 125°C minimum
- Resolution & Accuracy: 13-bit resolution with ±3°C accuracy at extended temperature range
- Supply Voltage Compatibility: Operating voltage range overlap with 2.8V ~ 5.5V
- Mounting & Package: Surface mount configuration with compatible pinout
- Product Status: Active status for ongoing availability and support
The MCP9844T series from Microchip Technology meets these substitution criteria through I2C output interface, -40°C to 125°C operating range, ±3°C accuracy specification, and active product status. Packaging variants (Cut Tape, Tape & Reel) provide supply chain flexibility while maintaining electrical equivalence.
Parameter Comparison
| Parameter | SE95U,025 | MCP9844T-BE/MNY | MCP9844T-BE/MNYAA | MCP9844T-BE/MNYAB |
|---|---|---|---|---|
| Manufacturer | NXP USA Inc. | Microchip Technology | Microchip Technology | Microchip Technology |
| Sensor Type | Digital, Local | Internal | Internal | Internal |
| Operating Temperature | -55°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C |
| Output Type | I2C/SMBus | 2-Wire Serial, I2C | 2-Wire Serial, I2C | 2-Wire Serial, I2C |
| Accuracy | ±3°C (-55°C ~ 125°C) | ±3°C (Max) | ±3°C (Max) | ±3°C (Max) |
| Voltage Supply | 2.8V ~ 5.5V | 1.7V ~ 3.6V | 1.7V ~ 3.6V | 1.7V ~ 3.6V |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | Die | 8-WFDFN Exposed Pad | 8-WFDFN Exposed Pad | 8-WFDFN Exposed Pad |
| Product Status | Obsolete | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
The MCP9844T-BE series represents the primary substitute path for SE95U,025 applications. All three variants (MCP9844T-BE/MNY, MCP9844T-BE/MNYAA, MCP9844T-BE/MNYAB) maintain active product status with ROHS3 compliance and REACH unaffected certification, ensuring long-term supply chain viability and regulatory alignment.
Selection between packaging variants depends on procurement requirements: MCP9844T-BE/MNY (Cut Tape & Digi-Reel) supports flexible order quantities, while MCP9844T-BE/MNYAA and MCP9844T-BE/MNYAB (Tape & Reel configurations) optimize high-volume production workflows.
The lower supply voltage range (1.7V ~ 3.6V) of MCP9844T series requires verification against original 2.8V ~ 5.5V specification in applications utilizing the full upper voltage range. The -40°C lower temperature limit (versus -55°C) must be evaluated for designs requiring extended low-temperature operation.
Frequently Asked Questions (FAQ)
Q: Can MCP9844T-BE variants directly replace SE95U,025 in existing designs?
A: MCP9844T-BE series provides functional equivalence through I2C interface compatibility and matching ±3°C accuracy. Physical package differences (8-WFDFN versus Die) require PCB layout modification. Supply voltage range differences must be verified for specific application requirements.
Q: What are the key differences between MCP9844T-BE/MNY, MCP9844T-BE/MNYAA, and MCP9844T-BE/MNYAB?
A: All three variants share identical electrical specifications and package configuration (8-WFDFN Exposed Pad). Differences are limited to packaging format: MCP9844T-BE/MNY uses Cut Tape & Digi-Reel, while MCP9844T-BE/MNYAA and MCP9844T-BE/MNYAB use Tape & Reel configurations. Selection is based on procurement and assembly process requirements.
Q: Does the MCP9844T-BE operate across the full -55°C to 125°C range of the SE95U,025?
A: MCP9844T-BE operates from -40°C to 125°C. Applications requiring operation below -40°C must retain SE95U,025 or identify alternative components with extended low-temperature specifications.
Q: Are there supply voltage compatibility concerns?
A: SE95U,025 operates at 2.8V ~ 5.5V while MCP9844T-BE operates at 1.7V ~ 3.6V. Designs utilizing supply voltages above 3.6V require voltage regulation or alternative component selection.
Q: What certifications apply to MCP9844T-BE substitutes?
A: All MCP9844T-BE variants are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8542.39.0001, matching the regulatory profile of SE95U,025.
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