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RT9818D-30GV Equivalent & Substitute Parts
Part Overview
The RT9818D-30GV is an active low reset supervisor IC manufactured by Richtek USA Inc., designed for single-channel voltage monitoring and power-on reset applications. This Surface Mount device operates across the industrial temperature range of -40°C to 85°C and is classified as Active product status. Substitute parts are identified when equivalent electrical characteristics, package compatibility, and compliance certifications align with the original specification, enabling seamless integration into existing designs without functional compromise.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Voltage Threshold | 3V |
| Output Type | Open Drain or Open Collector |
| Reset Logic | Active Low |
| Reset Timeout | 292ms Minimum |
| Monitored Channels | 1 |
| Package / Case | TO-236-3, SC-59, SOT-23-3 |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution eligibility for the RT9818D-30GV is determined by strict alignment of the following critical parameters:
- Voltage threshold matching at 3V
- Single-channel voltage monitoring capability
- Active Low reset output configuration
- Open Drain or Open Collector output topology
- Minimum reset timeout of 292ms
- SOT-23-3 package compatibility
- Surface Mount mounting type
- Operating temperature range of -40°C to 85°C
- ROHS3 compliance and REACH unaffected status
The APX803L40-30SA-7 from Diodes Incorporated satisfies all substitution criteria and is classified as a parametric equivalent.
Parameter Comparison
| Parameter | RT9818D-30GV (Richtek) | APX803L40-30SA-7 (Diodes) |
|---|---|---|
| Manufacturer | Richtek USA Inc. | Diodes Incorporated |
| Category | Power Management (PMIC) | Power Management (PMIC) |
| Type | Simple Reset/Power-On Reset | Simple Reset/Power-On Reset |
| Number of Voltages Monitored | 1 | 1 |
| Voltage - Threshold | 3V | 3V |
| Output | Open Drain or Open Collector | Open Drain or Open Collector |
| Reset | Active Low | Active Low |
| Reset Timeout | 292ms Minimum | 292ms Minimum |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | TO-236-3, SC-59, SOT-23-3 | TO-236-3, SC-59, SOT-23-3 |
| Supplier Device Package | SOT-23-3 | SOT-23-3 |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| REACH Status | REACH Unaffected | REACH Unaffected |
| ECCN | EAR99 | EAR99 |
| HTSUS | 8542.39.0001 | 8542.39.0001 |
| Product Status | Active | Active |
Engineering Selection Recommendations
Both the RT9818D-30GV and APX803L40-30SA-7 maintain Active product status, ensuring continued manufacturer support and supply chain availability. Both devices carry ROHS3 compliance and REACH unaffected certification, meeting regulatory requirements for industrial and commercial applications. The APX803L40-30SA-7 features Moisture Sensitivity Level (MSL) 1 with unlimited storage duration, compared to the RT9818D-30GV MSL 3 rating, providing enhanced reliability in high-humidity storage and assembly environments. Selection between these parts should be based on supply availability, lead time requirements, and specific moisture sensitivity constraints of the application.
Frequently Asked Questions (FAQ)
Q: What makes the APX803L40-30SA-7 a valid substitute for the RT9818D-30GV?
A: Both devices share identical electrical specifications including 3V threshold voltage, single-channel monitoring, Active Low reset output, 292ms minimum reset timeout, and -40°C to 85°C operating temperature range. Both are packaged in SOT-23-3 and maintain equivalent compliance certifications (ROHS3, REACH unaffected, EAR99).
Q: Are there any differences in package handling between these parts?
A: Both parts use the SOT-23-3 package and Surface Mount mounting type, ensuring identical PCB footprint and assembly compatibility. The APX803L40-30SA-7 is supplied in Tape & Reel packaging, while the RT9818D-30GV packaging format is not specified in the provided data.
Q: What is the significance of the Moisture Sensitivity Level (MSL) difference?
A: The APX803L40-30SA-7 carries MSL 1 (unlimited storage), while the RT9818D-30GV carries MSL 3 (168 hours). MSL 1 indicates superior moisture resistance and allows extended shelf storage without baking requirements prior to assembly.
**Q: Can these parts be used interchangeably in production
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