STL65DN3LLH5 Equivalent & Substitute Parts

Part Overview

The STL65DN3LLH5 is a dual N-channel MOSFET array manufactured by STMicroelectronics, designed for surface mount applications requiring high current switching capability. This device features a 30V drain-to-source voltage rating with a continuous drain current of 65A and operates across an industrial temperature range of -55°C to 150°C. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity.

Substiute Parts

STL65DN3LLH5

STMicroelectronicsIn Stock: 4149STL65DN3LLH5 Datasheet

Current PartRFQ

AON6816

Alpha & Omega Semiconductor Inc.In Stock: 1840AON6816 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the STL65DN3LLH5 is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Drain-to-Source Voltage (Vdss): Must equal 30V
• Configuration: Must be 2 N-Channel (Dual)
• FET Feature: Must support Logic Level Gate operation
• Operating Temperature Range: Must span -55°C to 150°C
• Package Type: Must be compatible surface mount form factor (PowerFlat or equivalent 8-pin DFN)
• RoHS Compliance: Must maintain ROHS3 Compliant status

Performance Parameters (Secondary Consideration):

• Continuous Drain Current (Id): Substitute must support application requirements
• On-State Resistance (Rds On): Substitute characteristics must be suitable for thermal and efficiency requirements
• Gate Charge (Qg) and Input Capacitance (Ciss): Substitute values must be compatible with gate drive circuitry

The AON6816 meets the critical electrical and mechanical matching criteria, though with reduced current and power ratings compared to the primary part.

Parameter Comparison

Engineering Selection Recommendations

STL65DN3LLH5 (Primary Part - Obsolete Status): The STL65DN3LLH5 is classified as obsolete and no longer in active production. While 4063 units remain in current inventory, long-term procurement cannot be guaranteed. This part maintains ROHS3 compliance and MSL Level 1 rating, suitable for industrial applications across the full -55°C to 150°C temperature range.

AON6816 (Active Substitute): The AON6816 is an active product from Alpha & Omega Semiconductor Inc., ensuring ongoing availability and supply chain continuity. This device maintains electrical compatibility across critical parameters: identical 30V Vdss rating, dual N-channel configuration with logic level gate operation, and matching -55°C to 150°C operating temperature range. Both parts carry ROHS3 compliance and MSL Level 1 moisture sensitivity ratings.

The AON6816 exhibits reduced continuous drain current (17A versus 65A) and maximum power dissipation (2.8W versus 60W). Selection of the AON6816 is appropriate for applications where the lower current and power ratings are sufficient. Applications requiring the full 65A continuous current capability of the STL65DN3LLH5 require evaluation of alternative high-current dual N-channel MOSFETs with matching voltage and temperature specifications.

Frequently Asked Questions (FAQ)

Q: Can the AON6816 directly replace the STL65DN3LLH5 in all applications?

A: The AON6816 provides electrical and mechanical compatibility for the critical parameters: 30V Vdss, dual N-channel configuration, logic level gate operation, and -55°C to 150°C temperature range. However, the reduced continuous drain current (17A versus 65A) and power dissipation (2.8W versus 60W) limit substitution to applications within these lower ratings. Verify application current requirements before selection.

Q: What are the package compatibility considerations?

A: Both the STL65DN3LLH5 (PowerFlat™ 5x6) and AON6816 (8-DFN 5x6) utilize 8-pin surface mount packages with identical 5x6mm footprints. PCB layout and thermal management designs developed for the STL65DN3LLH5 are mechanically compatible with the AON6816. Verify pinout alignment and thermal pad connectivity with device datasheets prior to implementation.

Q: How do gate charge and input capacitance differences affect circuit design?

A: The AON6816 exhibits higher gate charge (45nC @ 10V versus 12nC @ 4.5V) and comparable input capacitance (1540pF @ 15V versus 1500pF @ 25V). These differences require gate drive circuit evaluation to ensure adequate drive current and switching speed performance. Applications with marginal gate drive capability may require circuit modification.

Q: Are there compliance and regulatory differences between these parts?

A: Both the STL65DN3LLH5 and AON6816 maintain ROHS3 compliance, MSL Level 1 moisture sensitivity rating, and REACH Unaffected status. No regulatory or compliance barriers exist for substitution from an environmental or trade classification perspective (both carry EAR99 ECCN and 8541.29.0095 HTSUS classification).

Q: What is the product status impact on long-term availability?

A: The STL65DN3LLH5 is obsolete with no active production. Current inventory of 4063 units provides near-term availability, but procurement beyond existing stock cannot be guaranteed. The AON6816 is an active product with ongoing manufacturing, ensuring long-term supply chain continuity for new designs and production requirements.