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APX812-44UG-7 Equivalent & Substitute Parts
Part Overview
The APX812-44UG-7 is a single-channel power supply supervisor IC manufactured by Diodes Incorporated, designed for power-on reset and simple reset applications. This Surface Mount device operates across the industrial temperature range of -40°C to 85°C and features a push-pull, totem pole output configuration with an active high reset signal. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).
Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across critical monitoring and output parameters, enabling design flexibility and supply chain continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Voltage Threshold | 4.38V |
| Number of Voltages Monitored | 1 |
| Output Configuration | Push-Pull, Totem Pole |
| Reset Logic | Active High |
| Reset Timeout | 140ms Minimum |
| Operating Temperature Range | -40°C to 85°C (TA) |
| Mounting Type | Surface Mount |
| Package Type | TO-253-4, TO-253AA (SOT-143) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the APX812-44UG-7 are qualified based on strict equivalence across the following critical parameters:
- Voltage threshold monitoring: 4.38V
- Single channel supervision capability
- Push-pull, totem pole output stage
- Active high reset signal logic
- 140ms minimum reset timeout duration
- Surface mount technology with TO-253-4/TO-253AA package compatibility
- Operating temperature range: -40°C to 85°C
- ROHS3 compliance and MSL 1 rating
Both identified substitute parts maintain full electrical and mechanical compatibility within these defined parameters.
Parameter Comparison
| Parameter | APX812-44UG-7 | MAX812MEUS+T | STM812MW16F |
|---|---|---|---|
| Manufacturer | Diodes Incorporated | Analog Devices Inc./Maxim Integrated | Nexperia USA Inc. |
| Voltage Threshold | 4.38V | 4.38V | 4.38V |
| Number of Voltages Monitored | 1 | 1 | 1 |
| Output Configuration | Push-Pull, Totem Pole | Push-Pull, Totem Pole | Push-Pull, Totem Pole |
| Reset Logic | Active High | Active High | Active High |
| Reset Timeout | 140ms Minimum | 140ms Minimum | Not Specified |
| Operating Temperature | -40°C to 85°C | -40°C to 85°C | Not Specified |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | TO-253-4, TO-253AA | TO-253-4, TO-253AA | Not Specified |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Not Specified |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | Not Specified |
| Product Status | Active | Active | Active |
Engineering Selection Recommendations
The MAX812MEUS+T from Analog Devices Inc./Maxim Integrated provides complete parametric equivalence to the APX812-44UG-7, with all critical electrical and mechanical specifications matching exactly. Both parts maintain ROHS3 compliance, MSL 1 rating, and active production status. The MAX812MEUS+T is available in Cut Tape and Digi-Reel packaging formats with higher inventory availability (15,300 units).
The STM812MW16F from Nexperia USA Inc. maintains the core functional requirements of single-channel supervision with 4.38V threshold and active high reset logic. However, detailed specifications for reset timeout, operating temperature range, package configuration, and compliance certifications are not provided in available documentation. Selection of this part requires verification of these parameters against application requirements.
Frequently Asked Questions (FAQ)
Q: Can the MAX812MEUS+T be used as a direct replacement for the APX812-44UG-7?
A: Yes. The MAX812MEUS+T meets all specified electrical parameters including 4.38V threshold, 140ms minimum reset timeout, active high reset logic, and push-pull totem pole output. Both parts use identical TO-253-4/TO-253AA surface mount packages and maintain equivalent compliance certifications.
Q: What are the key differences between packaging options for substitute parts?
A: The APX812-44UG-7 is supplied in Tape & Reel format. The MAX812MEUS+T is available in Cut Tape and Digi-Reel packaging. The STM812MW16F is supplied in Bulk format. Package format selection depends on assembly line requirements and volume specifications.
Q: Are all substitute parts suitable for the full -40°C to 85°C operating range?
A: The MAX812MEUS+T is specified for -40°C to 85°C operation. The STM812MW16F operating temperature range is not provided in available documentation and must be verified before selection for applications requiring full industrial temperature range operation.
Q: Do all parts maintain the same moisture sensitivity level?
A: The APX812-44UG-7 and MAX812MEUS+T both carry MSL 1 (Unlimited) rating. The STM812MW16F moisture sensitivity level is not specified in available documentation.
Q: What compliance certifications apply to these parts?
A: The APX812-44UG-7 and MAX812MEUS+T are both ROHS3 compliant with REACH Unaffected status and EAR99 ECCN classification. Compliance information for the STM812MW16F is not provided in available documentation.
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