RT9818A-34GV Equivalent & Substitute Parts

Part Overview

The RT9818A-34GV 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 ROHS3 compliant. The part is currently in active production status with 6,100 units available in inventory. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when supply chain optimization is required.

Substiute Parts

RT9818A-34GV

Richtek USA Inc.In Stock: 6153RT9818A-34GV Datasheet

Current PartRFQ

STM1061N34WX6F

STMicroelectronicsIn Stock: 155288STM1061N34WX6F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RT9818A-34GV is determined by the following critical parameters:

• Voltage Threshold: 3.4V (single-channel monitoring requirement)
• Output Configuration: Open Drain or Open Collector topology
• Reset Logic: Active Low operation
• Package Type: SOT-23-3 (TO-236-3, SC-59) for mechanical and electrical compatibility
• Mounting Type: Surface Mount
• Operating Temperature Range: -40°C to 85°C minimum
• Regulatory Compliance: ROHS3 and REACH Unaffected status

The STM1061N34WX6F from STMicroelectronics meets all substitution criteria. Both parts share identical voltage threshold, output configuration, reset logic, package specification, and temperature operating range. Both are ROHS3 compliant and REACH unaffected, ensuring regulatory equivalence.

Parameter Comparison

Engineering Selection Recommendations

Both the RT9818A-34GV and STM1061N34WX6F are active production devices with full ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for industrial and commercial applications.

The RT9818A-34GV is the primary specification part with established design history and 6,100 units in current inventory. The STM1061N34WX6F provides an equivalent alternative with significantly higher inventory availability (155,200 units), offering supply chain flexibility. Both parts are functionally interchangeable within the specified electrical and mechanical parameters.

The STM1061N34WX6F features improved moisture handling characteristics (MSL 1 versus MSL 3), which may provide advantages in high-humidity storage or extended shelf-life applications. The 30µs propagation delay specification on the STM part provides explicit timing documentation compared to the 0ms typical specification on the RT part.

Frequently Asked Questions (FAQ)

Q: Can the STM1061N34WX6F directly replace the RT9818A-34GV in existing designs?

A: Yes. Both parts share identical voltage threshold (3.4V), output configuration (Open Drain/Open Collector), reset logic (Active Low), package type (SOT-23-3), and operating temperature range (-40°C to 85°C). No circuit modifications are required.

Q: What is the significance of the different Reset Timeout specifications?

A: The RT9818A-34GV specifies 0ms typical reset timeout, while the STM1061N34WX6F specifies 30µs typical propagation delay. Both values fall within acceptable reset timing for standard power-on reset applications. The STM specification provides explicit propagation delay documentation.

Q: Does the difference in Moisture Sensitivity Level (MSL) affect substitution?

A: The MSL difference (3 versus 1) reflects different moisture absorption characteristics during storage. MSL 1 (unlimited shelf life) provides superior moisture handling. Both parts meet ROHS3 compliance. MSL rating does not affect electrical performance or circuit compatibility.

Q: Are both parts suitable for industrial temperature applications?

A: Yes. Both the RT9818A-34GV and STM1061N34WX6F operate across the full industrial temperature range of -40°C to 85°C (TA), meeting standard industrial specifications.

Q: What packaging formats are available for the STM1061N34WX6F?

A: The STM1061N34WX6F is available in Cut Tape (CT) and Digi-Reel® packaging formats, providing flexibility for both manual assembly and automated reel-fed production processes.