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EMC1188-1-AIA-TR Equivalent & Substitute Parts
Part Overview
The EMC1188-1-AIA-TR is a digital temperature sensor manufactured by Microchip Technology, designed for local and remote temperature monitoring across -40°C to 125°C operating range. This component features I2C/SMBus interface output, 11-bit resolution, and surface mount packaging in a 10-DFN (3x3) form factor. The product status is obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | EMC1188-1-AIA-TR |
| Manufacturer | Microchip Technology |
| Category | Temperature Sensors |
| Sensor Type | Digital, Local/Remote |
| Sensing Temperature - Local | -40°C ~ 125°C |
| Sensing Temperature - Remote | -64°C ~ 191°C |
| Output Type | I2C/SMBus |
| Voltage - Supply | 3V ~ 3.6V |
| Resolution | 11 b |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
| Package / Case | 10-VFDFN Exposed Pad |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution of the EMC1188-1-AIA-TR is determined by the following critical parameters:
- Sensor Type: Digital, Local/Remote temperature monitoring capability
- Output Interface: I2C/SMBus protocol compatibility
- Sensing Temperature Range: Local -40°C ~ 125°C and Remote -64°C ~ 191°C
- Supply Voltage: Operating range must accommodate 3V ~ 3.6V
- Resolution: Minimum 11-bit resolution for equivalent measurement precision
- Mounting Type: Surface mount configuration
- Regulatory Compliance: ROHS3 compliance and EAR99 classification
The TMP451AIDQFT from Texas Instruments meets these substitution criteria while offering enhanced specifications in resolution (12-bit) and supply voltage flexibility (1.7V ~ 3.6V). Both components share identical functional capabilities for local/remote temperature sensing, I2C/SMBus interface, and operating temperature range.
Parameter Comparison
| Parameter | EMC1188-1-AIA-TR | TMP451AIDQFT |
|---|---|---|
| Manufacturer | Microchip Technology | Texas Instruments |
| Sensor Type | Digital, Local/Remote | Digital, Local/Remote |
| Sensing Temperature - Local | -40°C ~ 125°C | -40°C ~ 125°C |
| Sensing Temperature - Remote | -64°C ~ 191°C | -64°C ~ 191°C |
| Output Type | I2C/SMBus | I2C/SMBus |
| Voltage - Supply | 3V ~ 3.6V | 1.7V ~ 3.6V |
| Resolution | 11 b | 12 b |
| Accuracy - Highest (Lowest) | ±1°C (±2°C) | ±1°C (±2°C) |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 10-VFDFN Exposed Pad | 8-WFDFN |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected |
| ECCN | EAR99 | EAR99 |
Engineering Selection Recommendations
The TMP451AIDQFT qualifies as a direct functional substitute for the obsolete EMC1188-1-AIA-TR based on equivalent sensor type, temperature range, interface protocol, and regulatory compliance. Both components maintain ROHS3 compliance and EAR99 classification, ensuring regulatory continuity.
The TMP451AIDQFT provides enhanced supply voltage flexibility (1.7V ~ 3.6V versus 3V ~ 3.6V) and increased resolution (12-bit versus 11-bit), offering improved measurement precision without compromising compatibility with existing I2C/SMBus interface implementations. Package geometry differs (8-WFDFN versus 10-VFDFN), requiring PCB layout verification to confirm physical fit within existing designs.
Selection of the TMP451AIDQFT is appropriate for applications requiring continued production of temperature monitoring systems previously designed around the EMC1188-1-AIA-TR.
Frequently Asked Questions (FAQ)
Q: Can the TMP451AIDQFT directly replace the EMC1188-1-AIA-TR without firmware modification?
A: Yes. Both components implement I2C/SMBus protocol with identical functional temperature sensing ranges and output characteristics. Firmware modifications are not required for protocol compatibility. PCB layout changes may be necessary due to package geometry differences.
Q: What is the primary difference between these two components?
A: The TMP451AIDQFT offers 12-bit resolution compared to the EMC1188-1-AIA-TR's 11-bit resolution, providing finer temperature measurement granularity. The TMP451AIDQFT also supports lower supply voltage operation (1.7V minimum versus 3V minimum). Package form factors differ: 8-WFDFN versus 10-VFDFN.
Q: Are there any supply voltage compatibility concerns?
A: The EMC1188-1-AIA-TR requires 3V ~ 3.6V supply. The TMP451AIDQFT operates across 1.7V ~ 3.6V. Designs supplying 3V ~ 3.6V to the original component will operate the substitute without modification. Designs utilizing lower supply voltages below 3V cannot use the EMC1188-1-AIA-TR but can use the TMP451AIDQFT.
Q: How do package differences affect PCB design?
A: The EMC1188-1-AIA-TR uses 10-VFDFN (3x3) packaging, while the TMP451AIDQFT uses 8-WFDFN (2x2) packaging. Physical footprint dimensions differ, requiring PCB layout redesign. Pin count and pinout configuration must be verified against schematic requirements before implementation.
Q: Do both components meet the same regulatory requirements?
A: Yes. Both components are ROHS3 compliant, REACH unaffected, and classified as EAR99. Regulatory compliance is equivalent between the two parts.
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