FDC6420C Equivalent & Substitute Parts

Part Overview

The FDC6420C is an active-status N and P-Channel complementary MOSFET array manufactured by onsemi, designed for surface mount applications in the PowerTrench® series. This dual-channel device integrates logic-level gate control in a compact SuperSOT™-6 package, providing 20V drain-to-source voltage capability with 3A (N-channel) and 2.2A (P-channel) continuous drain current ratings. The device operates across an industrial temperature range of -55°C to 150°C and dissipates up to 700mW. Equivalent and substitute parts are identified based on matching electrical performance parameters, package compatibility, and operational specifications to support component procurement flexibility and supply chain continuity.

Substiute Parts

FDC6420C

onsemiIn Stock: 85116FDC6420C Datasheet

Current PartRFQ

AO6604

Alpha & Omega Semiconductor Inc.In Stock: 210285AO6604 Datasheet

SimilarRFQ

BSL215CH6327XTSA1

Infineon TechnologiesIn Stock: 28460BSL215CH6327XTSA1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FDC6420C are identified based on the following critical electrical and mechanical parameters:

Matching Criteria:

• Drain to Source Voltage (Vdss): 20V
• Configuration: N and P-Channel complementary topology
• FET Feature: Logic Level Gate operation
• Operating Temperature Range: -55°C ~ 150°C
• Mounting Type: Surface Mount
• Technology: MOSFET (Metal Oxide)
• Product Status: Active
• RoHS Compliance: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Substitution Logic: The AO6604 and BSL215CH6327XTSA1 are classified as equivalent or substitute parts because they satisfy the core electrical requirements (20V Vdss, N/P-channel configuration, logic-level gate drive, and matching temperature range). Variations in continuous drain current (Id), on-resistance (Rds On), gate charge (Qg), and power dissipation are acceptable within the scope of component substitution, provided the substitute part meets or exceeds the performance requirements of the application circuit. Package differences (SuperSOT™-6 versus 6-TSOP versus PG-TSOP6-6) are noted as mechanical considerations for PCB layout compatibility.

Parameter Comparison

Engineering Selection Recommendations

FDC6420C (onsemi PowerTrench®): Select this part for applications requiring the specified balance of gate charge, input capacitance, and on-resistance in the SuperSOT™-6 package. The device is active-status with full ROHS3 compliance and unlimited moisture sensitivity rating, suitable for standard industrial and commercial applications.

AO6604 (Alpha & Omega Semiconductor): This substitute offers improved continuous drain current (3.4A N-channel, 2.5A P-channel) and lower on-resistance (65mOhm) compared to the FDC6420C, with reduced gate charge (3.8nC). The 6-TSOP package provides an alternative footprint. Select this part when higher current capacity or lower switching losses are required within the same voltage and temperature specifications. Active-status with ROHS3 compliance.

BSL215CH6327XTSA1 (Infineon OptiMOS™): This substitute is rated for lower continuous drain current (1.5A) and maximum power dissipation (500mW), with significantly reduced gate charge (0.73nC) and input capacitance (143pF). The device carries automotive-grade qualification (AEC-Q101) and is packaged in PG-TSOP6-6. Select this part for applications with lower current requirements, reduced switching frequency demands, or automotive-qualified designs. Active-status with ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can the AO6604 directly replace the FDC6420C on the same PCB?

A: The AO6604 uses a 6-TSOP package (SC-74, SOT-457) while the FDC6420C uses SuperSOT™-6 (SOT-23-6 Thin). Although both are surface mount packages, the pinout and footprint differ. PCB layout modification is required for direct substitution.

Q: What are the key electrical differences between these three parts?

A: The FDC6420C and AO6604 are comparable in current capacity (3A/2.2A versus 3.4A/2.5A) and on-resistance (70mOhm versus 65mOhm). The BSL215CH6327XTSA1 is rated for significantly lower current (1.5A) and power dissipation (500mW), with substantially lower gate charge (0.73nC) and input capacitance (143pF). All three maintain 20V Vdss and -55°C to 150°C operating range.

Q: Is the BSL215CH6327XTSA1 suitable for high-current applications?

A: No. The BSL215CH6327XTSA1 is rated for 1.5A continuous drain current, which is lower than both the FDC6420C (3A) and AO6604 (3.4A). This part is appropriate for lower-current switching applications or designs where reduced gate charge and capacitance are prioritized.

Q: What is the significance of the automotive qualification on the BSL215CH6327XTSA1?

A: The BSL215CH6327XTSA1 carries AEC-Q101 automotive qualification, indicating compliance with automotive-grade reliability and testing standards. This qualification is relevant only for applications requiring automotive-level component certification. The FDC6420C and AO6604 do not carry this designation.

Q: Are all three parts RoHS compliant?

A: Yes. The FDC6420C, AO6604, and BSL215CH6327XTSA1 are all ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), meeting environmental and regulatory requirements for commercial and industrial applications.

Q: How do gate charge differences affect circuit performance?

A: Gate charge (Qg) determines the energy required to switch the MOSFET on and off. The FDC6420C requires 4.6nC, the AO6604 requires 3.8nC, and the BSL215CH6327XTSA1 requires 0.73nC. Lower gate charge reduces switching losses and allows faster switching speeds, which is beneficial in high-frequency applications. The choice depends on the driver circuit capability and switching frequency requirements.

Q: Can these parts be used interchangeably in a boost converter design?

A: Interchangeability depends on the specific circuit requirements. If the application requires 3A continuous drain current, the BSL215CH6327XTSA1 (1.5A rating) is unsuitable. The FDC6420C and AO6604 are electrically compatible for equivalent current levels. Package differences must be resolved through PCB redesign. Verify gate drive voltage compatibility (4.5V for FDC6420C and AO6604, 2.5V for BSL215CH6327XTSA1) with the driver circuit.