RT7736FGE Equivalent & Substitute Parts

Part Overview

The RT7736FGE is an offline switching flyback converter IC manufactured by Richtek USA Inc., designed for isolated power management applications. This PMIC operates at 65kHz switching frequency with integrated current limiting, overload, overvoltage, and short circuit protection. The device is actively produced and widely stocked, with 3700 units available in new original condition. Alternative part numbers exist within the same product family to accommodate different packaging and distribution requirements while maintaining identical electrical and mechanical specifications.

Substiute Parts

RT7736FGE

Richtek USA Inc.In Stock: 3805RT7736FGE Datasheet

Current PartRFQ

RT7736GGE

Richtek USA Inc.In Stock: 4206RT7736GGE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The RT7736FGE has one parametric equivalent within the Richtek product family: RT7736GGE. Substitution eligibility is determined by strict equivalence across all electrical and mechanical parameters. Both parts share identical specifications for topology, voltage supply range, startup voltage, switching frequency, duty cycle, output isolation, fault protection features, operating temperature range, package type, and mounting configuration. The distinction between these part numbers reflects packaging and distribution format only—RT7736FGE is supplied in standard packaging, while RT7736GGE is available in Cut Tape (CT) and Digi-Reel® formats. Both maintain the same base product number (RT7736) and belong to the SmartJitter™ series.

Key Parameters Determining Substitution:

• Topology: Flyback
• Voltage Supply (Vcc/Vdd): 12V ~ 25V
• Startup Voltage: 14.5V
• Switching Frequency: 65kHz
• Duty Cycle: 75%
• Output Isolation: Isolated
• Fault Protection: Current Limiting, Overload, Overvoltage, Short Circuit
• Operating Temperature: -40°C ~ 85°C
• Package / Case: SOT-23-6
• Mounting Type: Surface Mount

Parameter Comparison

Engineering Selection Recommendations

Both RT7736FGE and RT7736GGE are active products with full ROHS3 compliance and REACH unaffected status, making them suitable for current design implementations. Selection between these parts should be based on packaging and supply chain requirements. The RT7736FGE is appropriate for standard component procurement workflows, while RT7736GGE accommodates automated assembly processes utilizing Cut Tape and Digi-Reel® formats. Both parts maintain identical electrical performance and thermal characteristics across the specified operating range. Inventory availability favors RT7736GGE with 4150 units in stock compared to 3700 units for RT7736FGE.

Frequently Asked Questions (FAQ)

Q: Can RT7736GGE be used as a direct replacement for RT7736FGE? A: Yes. Both parts are parametric equivalents with identical electrical specifications, topology, voltage ratings, switching frequency, protection features, and operating temperature range. The only difference is packaging format (Cut Tape/Digi-Reel® versus standard packaging).

Q: What determines whether these parts are interchangeable? A: Interchangeability is based on matching all critical electrical and mechanical parameters: flyback topology, 12V–25V supply voltage, 14.5V startup voltage, 65kHz switching frequency, 75% duty cycle, isolated output, identical fault protection, SOT-23-6 package, and surface mount configuration.

Q: Are there any compliance or certification differences between RT7736FGE and RT7736GGE? A: No. Both parts carry identical ROHS3 compliance, REACH unaffected status, EAR99 ECCN classification, and HTSUS code 8542.39.0001. MSL rating is 3 (168 Hours) for both.

Q: Which part should I select for high-volume production? A: RT7736GGE is optimized for automated assembly with Cut Tape and Digi-Reel® packaging. RT7736FGE is suitable for standard procurement. Both are active products with adequate inventory.

Q: Do these parts require different PCB layouts or thermal management? A: No. Both use the same SOT-23-6 package and surface mount configuration, requiring identical PCB footprints and thermal design considerations.