FDS4897AC Equivalent & Substitute Parts

Part Overview

The FDS4897AC is an N and P-Channel MOSFET array manufactured by onsemi, designed for surface mount applications in 8-SOIC packaging. This device features a 40V drain-to-source voltage rating with continuous drain currents of 6.1A (N-channel) and 5.2A (P-channel), and is rated for 900mW maximum power dissipation. The FDS4897AC operates across a temperature range of -55°C to 150°C and incorporates logic level gate technology for direct digital interface compatibility.

The FDS4897AC is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades where the original part is no longer readily procurable from primary sources.

Substiute Parts

FDS4897AC

onsemiIn Stock: 17003FDS4897AC Datasheet

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DMC3028LSD-13

Diodes IncorporatedIn Stock: 15395DMC3028LSD-13 Datasheet

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DMC3028LSDX-13

Diodes IncorporatedIn Stock: 55216DMC3028LSDX-13 Datasheet

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TPC8408,LQ(S

Toshiba Semiconductor and StorageIn Stock: 6097TPC8408,LQ(S Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the FDS4897AC is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Configuration: N and P-Channel dual MOSFET array
• Drain to Source Voltage (Vdss): Minimum 40V required to maintain voltage margin in 40V-rated applications
• Continuous Drain Current (Id): Minimum 6.1A (N-channel) and 5.2A (P-channel) to support specified load currents
• Gate Charge (Qg): Lower values improve switching performance; higher values acceptable if within thermal budget
• Input Capacitance (Ciss): Affects gate drive requirements; substitutes with higher capacitance require verification of driver capability
• Rds On: Lower on-resistance reduces power dissipation; higher values acceptable within thermal constraints
• Vgs(th): Logic level threshold (typically 2.3V to 3V) for direct digital interface compatibility

Mechanical Compatibility Criteria:

• Package: 8-SOIC (0.154", 3.90mm Width) for PCB layout compatibility
• Mounting Type: Surface Mount for automated assembly compatibility

Regulatory Compliance:

• RoHS3 Compliance required
• MSL Level 1 (Unlimited) for storage and handling compatibility

Substitute parts must satisfy all electrical parameters at or above the FDS4897AC specifications, maintain identical package geometry, and comply with applicable regulatory standards.

Parameter Comparison

Engineering Selection Recommendations

TPC8408,LQ(S (Toshiba Semiconductor and Storage)

The TPC8408,LQ(S is the primary direct substitute for the FDS4897AC. This device maintains identical 40V Vdss rating, matching drain current specifications (6.1A N-channel, 5.3A P-channel), and identical 8-SOIC package geometry. The TPC8408,LQ(S is classified as active product status, ensuring long-term availability and supply chain continuity. Both devices comply with RoHS standards and MSL Level 1 requirements. The TPC8408,LQ(S exhibits lower gate charge (24nC versus 21nC) and lower maximum power rating (450mW versus 900mW), which may require thermal design verification in high-power applications. This substitute is suitable for direct PCB layout replacement without modification.

DMC3028LSD-13 (Diodes Incorporated)

The DMC3028LSD-13 operates at a reduced 30V Vdss rating compared to the FDS4897AC 40V specification. This device is suitable only for applications where the maximum operating voltage does not exceed 30V. The DMC3028LSD-13 provides higher continuous drain currents (6.6A N-channel, 6.8A P-channel) and superior power dissipation capability (1.8W maximum). This substitute is classified as active product status with ROHS3 compliance and MSL Level 1 rating. The reduced gate charge (10.5nC) and lower input capacitance (472pF) improve switching performance. Package geometry is identical to the FDS4897AC. Selection of this substitute requires confirmation that the 30V voltage rating is acceptable for the target application.

DMC3028LSDX-13 (Diodes Incorporated)

The DMC3028LSDX-13 is a variant of the DMC3028 series with reduced drain current ratings (5.5A N-channel, 5.8A P-channel) and operates at 30V Vdss. This device is suitable for applications where the FDS4897AC current requirements can be met with lower ratings and where maximum operating voltage does not exceed 30V. The DMC3028LSDX-13 is classified as active product status with ROHS3 compliance and MSL Level 1 rating. Gate charge (13.2nC) and input capacitance (641pF) are intermediate between the other Diodes Incorporated variant and the original part. This substitute requires confirmation of voltage and current compatibility with the target application.

Frequently Asked Questions (FAQ)

Q: Can the DMC3028LSD-13 or DMC3028LSDX-13 be used as direct replacements for the FDS4897AC?

A: The Diodes Incorporated DMC3028 series devices operate at 30V Vdss, which is lower than the FDS4897AC 40V rating. These substitutes are compatible only in applications where the maximum operating voltage does not exceed 30V. If the application requires 40V voltage margin, the TPC8408,LQ(S is the appropriate substitute. Verify the actual circuit voltage requirements before selecting a 30V-rated device.

Q: Is the TPC8408,LQ(S a pin-for-pin replacement for the FDS4897AC?

A: Yes. The TPC8408,LQ(S maintains identical 8-SOIC package geometry (0.154", 3.90mm Width) and pin configuration as the FDS4897AC. No PCB layout modifications are required for this substitution. Both devices are surface mount components with identical mounting requirements.

Q: What are the key differences in electrical performance between the FDS4897AC and its substitutes?

A: The TPC8408,LQ(S matches the FDS4897AC in Vdss (40V) and drain current ratings but exhibits slightly higher on-resistance (32mOhm versus 26mOhm) and lower maximum power rating (450mW versus 900mW). The DMC3028 series devices operate at reduced voltage (30V) but provide higher drain currents and superior power dissipation. Gate charge and input capacitance vary across substitutes, affecting switching speed and gate drive requirements.

Q: Are all substitute parts RoHS compliant?

A: Yes. The TPC8408,LQ(S is RoHS Compliant. The DMC3028LSD-13 and DMC3028LSDX-13 are ROHS3 Compliant. All substitute parts meet applicable regulatory requirements for the FDS4897AC application.

Q: What is the moisture sensitivity level for these substitute parts?

A: All substitute parts, including the TPC8408,LQ(S, DMC3028LSD-13, and DMC3028LSDX-13, are rated at MSL Level 1 (Unlimited). This classification indicates no moisture sensitivity restrictions for storage, handling, or shelf life.

Q: Can the substitute parts handle the same operating temperature range as the FDS4897AC?

A: Yes. All substitute parts operate across the identical temperature range of -55°C to 150°C (TJ), matching the FDS4897AC thermal specifications.

Q: Which substitute should be selected for a new design?

A: For new designs requiring 40V operation, the TPC8408,LQ(S is the recommended substitute due to matching voltage rating and active product status. For applications with maximum voltage requirements of 30V or lower, the DMC3028LSD-13 or DMC3028LSDX-13 offer enhanced current handling and power dissipation capabilities. Verify all electrical parameters against specific circuit requirements before final selection.