AP3785HMTR-G1 Equivalent & Substitute Parts

Part Overview

The AP3785HMTR-G1 is an offline switch flyback converter IC manufactured by Diodes Incorporated, designed for isolated power management applications. This device operates at 80kHz switching frequency with 15W power capability and integrates fault protection for over-temperature, over-voltage, and short-circuit conditions. The part is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and production continuity.

Substiute Parts

AP3785HMTR-G1

Diodes IncorporatedIn Stock: 16201AP3785HMTR-G1 Datasheet

Current PartRFQ

AP3785TAMTR-G1

Diodes IncorporatedIn Stock: 120429AP3785TAMTR-G1 Datasheet

Parametric EquivalentRFQ

AP3785TMTR-G1

Diodes IncorporatedIn Stock: 103830AP3785TMTR-G1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AP3785HMTR-G1 is based on strict electrical and mechanical parameter matching across the Diodes Incorporated AP3785 product family. The following criteria determine valid substitutes:

Critical Matching Parameters:

• Topology: Flyback converter architecture
• Output Isolation: Isolated configuration
• Voltage Supply Range: 5.9V ~ 30V
• Startup Voltage: 13V
• Switching Frequency: 80kHz
• Power Rating: 15W
• Fault Protection: Over Temperature, Over Voltage, Short Circuit
• Operating Temperature: -40°C ~ 150°C (TJ)
• Package: 8-SOIC (0.154", 3.90mm Width)
• Mounting: Surface Mount

The substitute parts AP3785TAMTR-G1 and AP3785TMTR-G1 maintain identical electrical specifications and package geometry. The primary differences are packaging format (Tape & Reel vs. standard packaging) and product status (Active vs. Obsolete).

Parameter Comparison

Engineering Selection Recommendations

Both AP3785TAMTR-G1 and AP3785TMTR-G1 are direct functional equivalents to the obsolete AP3785HMTR-G1. Selection between these active alternatives should be based on:

Product Status: AP3785TAMTR-G1 and AP3785TMTR-G1 are both active products with confirmed ongoing availability, eliminating obsolescence risk associated with the original part.

Compliance & Certifications: All three parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for current manufacturing standards.

Packaging Considerations: The substitute parts are supplied in Tape & Reel format, which is standard for high-volume production environments. This packaging format does not affect electrical performance or pin compatibility.

Inventory & Lead Time: AP3785TAMTR-G1 and AP3785TMTR-G1 maintain substantial stock levels (120,400 and 103,800 units respectively), providing supply security for production planning.

Frequently Asked Questions (FAQ)

Q: Are AP3785TAMTR-G1 and AP3785TMTR-G1 pin-for-pin compatible with AP3785HMTR-G1?

A: Yes. All three parts use the 8-SOIC package with identical pin configuration and electrical characteristics. Direct PCB substitution is possible without layout modifications.

Q: What is the difference between AP3785TAMTR-G1 and AP3785TMTR-G1?

A: Both parts are electrically and mechanically identical. The primary distinction is packaging format designation within the Diodes Incorporated product line. Both are supplied in Tape & Reel format and maintain identical electrical specifications.

Q: Can I use Tape & Reel packaged parts in place of standard packaging?

A: Yes. Tape & Reel packaging is a standard supply format for surface-mount components and does not affect component performance or PCB assembly compatibility. The actual component remains unchanged.

Q: Why is the original AP3785HMTR-G1 marked as obsolete?

A: Product obsolescence typically reflects manufacturer discontinuation decisions. The active equivalents AP3785TAMTR-G1 and AP3785TMTR-G1 provide continued access to this topology and performance class.

Q: Are there any electrical performance differences between the three parts?

A: No. All three parts maintain identical electrical specifications including voltage supply range, switching frequency, power rating, fault protection features, and operating temperature range.

Q: What compliance certifications apply to these substitute parts?

A: All three parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.