RT9817C-30PH Equivalent & Substitute Parts

Part Overview

The RT9817C-30PH is a micro-power voltage detector manufactured by Richtek USA Inc., classified as a Power Management Integrated Circuit (PMIC). This supervisor device operates as a push-pull, totem pole output configuration with single-channel voltage monitoring at a 3V threshold. The component is housed in a SOT-143 surface mount package and features a 143ms minimum reset timeout with active high/active low reset capability.

The RT9817C-30PH is currently listed as obsolete. Locating equivalent or substitute components is necessary to support ongoing production requirements, maintenance operations, and design continuity where this part number is specified in existing bill of materials documentation.

Substiute Parts

RT9817C-30PH

Richtek USA Inc.In Stock: 4511RT9817C-30PH Datasheet

Current PartRFQ

RT9817C-30GH

Richtek USA Inc.In Stock: 1160RT9817C-30GH Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RT9817C-30PH is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Manufacturer: Richtek USA Inc.
• Category: Power Management (PMIC)
• Type: Voltage Detector / Supervisor
• Number of Voltages Monitored: 1 channel
• Voltage Threshold: 3V
• Output Configuration: Push-Pull, Totem Pole
• Reset Timeout: 143ms Minimum
• Operating Temperature Range: -40°C ~ 85°C (TA)
• Mounting Type: Surface Mount
• Package / Case: TO-253-4, TO-253AA
• Supplier Device Package: SOT-143
• Base Product Number: RT9817
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 3 (168 Hours)
• REACH Status: REACH Unaffected

Allowable Variation:

• Reset Type: Active High/Active Low configuration may differ between main part and substitute, provided the application circuit design accommodates the specific reset polarity of the selected substitute.
• Product Status: Substitute parts may be active production items, providing improved availability compared to obsolete main part numbers.

The RT9817C-30GH meets all mandatory matching parameters and qualifies as a direct substitute for the RT9817C-30PH.

Parameter Comparison

Engineering Selection Recommendations

RT9817C-30GH as Primary Substitute:

The RT9817C-30GH is qualified as a direct substitute for the RT9817C-30PH based on electrical and mechanical parameter alignment. Both components share identical voltage threshold (3V), output configuration (push-pull, totem pole), reset timeout (143ms minimum), operating temperature range (-40°C ~ 85°C), package type (SOT-143), and compliance certifications (ROHS3, REACH Unaffected).

The RT9817C-30GH holds active product status, ensuring ongoing availability and supply chain continuity. This contrasts with the RT9817C-30PH, which is obsolete and subject to inventory depletion.

The primary distinction between these components is reset polarity: the RT9817C-30PH supports both active high and active low reset configurations, while the RT9817C-30GH operates exclusively in active low reset mode. Circuit designs utilizing the RT9817C-30PH must be evaluated to confirm compatibility with active low reset operation before implementing the RT9817C-30GH as a substitute.

Both components maintain identical RoHS3 compliance and REACH unaffected status, supporting regulatory requirements for new production and long-term product support.

Frequently Asked Questions (FAQ)

Q: Can the RT9817C-30GH directly replace the RT9817C-30PH without circuit modification?

A: The RT9817C-30GH is electrically and mechanically compatible with the RT9817C-30PH provided the application circuit is designed for active low reset operation. If the original design requires active high reset capability, circuit modification is necessary to accommodate the active low reset polarity of the RT9817C-30GH.

Q: Are the SOT-143 packages for both parts identical?

A: Yes. Both the RT9817C-30PH and RT9817C-30GH utilize the SOT-143 package (TO-253-4, TO-253AA case designation), ensuring identical PCB footprint and mounting compatibility.

Q: What is the significance of the product status difference between these parts?

A: The RT9817C-30PH is classified as obsolete, indicating discontinued production and limited remaining inventory. The RT9817C-30GH maintains active product status, ensuring availability through standard distribution channels and supporting long-term production requirements.

Q: Do both parts meet the same environmental and compliance standards?

A: Yes. Both the RT9817C-30PH and RT9817C-30GH are ROHS3 compliant, REACH unaffected, and maintain identical moisture sensitivity level (MSL 3, 168 hours) and operating temperature range (-40°C ~ 85°C).

Q: What is the reset timeout specification, and is it identical between both parts?

A: Both components feature a 143ms minimum reset timeout. This parameter defines the minimum duration the reset output remains asserted following a power supply transition or threshold crossing event.

Q: Are there any differences in the voltage monitoring threshold between these parts?

A: No. Both the RT9817C-30PH and RT9817C-30GH monitor a single voltage channel at an identical 3V threshold.