NTP90N02G Equivalent & Substitute Parts

Part Overview

The NTP90N02G is an N-Channel MOSFET manufactured by onsemi, rated for 24V drain-to-source voltage with 90A continuous drain current in a Through Hole TO-220 package. This device is classified as Obsolete, making identification of equivalent and substitute parts necessary for ongoing production support and design continuity. The part delivers 85W maximum power dissipation and operates across a temperature range of -55°C to 150°C.

Substiute Parts

NTP90N02G

onsemiIn Stock: 18621NTP90N02G Datasheet

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IRL3803PBF

Infineon TechnologiesIn Stock: 10139IRL3803PBF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the NTP90N02G is determined by electrical and mechanical compatibility within the following parameter constraints:

Critical Substitution Parameters:

• FET Type: N-Channel (required match)
• Package Type: TO-220-3 Through Hole (required match for mechanical compatibility)
• Drain to Source Voltage (Vdss): Must equal or exceed 24V
• Continuous Drain Current (Id): Must equal or exceed 90A
• Gate Drive Voltage: Compatible with 4.5V and 10V drive levels
• Operating Temperature Range: Must encompass -55°C to 150°C or provide equivalent thermal performance

The IRL3803PBF from Infineon Technologies satisfies these substitution criteria. It provides higher voltage rating (30V), increased current capacity (140A), superior power dissipation (200W), and extended temperature range (-55°C to 175°C), all within the same TO-220AB package footprint. The electrical parameters remain compatible with the original design requirements.

Parameter Comparison

Engineering Selection Recommendations

The IRL3803PBF serves as a direct substitute for the obsolete NTP90N02G based on the following engineering criteria:

Electrical Compatibility: The IRL3803PBF exceeds the minimum electrical requirements of the NTP90N02G across all critical parameters. The 30V Vdss rating provides margin above the 24V requirement, while the 140A continuous drain current substantially exceeds the 90A specification. The on-resistance of 6mOhm at 10V gate drive remains within acceptable performance bounds for the original application.

Thermal Performance: The IRL3803PBF delivers 200W maximum power dissipation compared to 85W for the NTP90N02G, providing enhanced thermal headroom. The extended operating temperature range (-55°C to 175°C) encompasses the original specification (-55°C to 150°C).

Package and Mounting: Both devices utilize the TO-220-3 Through Hole package, ensuring mechanical and thermal interface compatibility without PCB redesign.

Regulatory Compliance: Both parts maintain REACH Unaffected status and EAR99 ECCN classification, preserving compliance posture. The IRL3803PBF carries ROHS3 Compliant certification, providing enhanced environmental compliance.

Product Status Consideration: While the IRL3803PBF is classified as Not For New Designs, it remains available in production quantities (10,080 pieces in stock) and serves as the documented substitute for the obsolete NTP90N02G.

Frequently Asked Questions (FAQ)

Q: Can the IRL3803PBF directly replace the NTP90N02G without circuit modification?

A: Yes. Both devices are N-Channel MOSFETs in TO-220-3 packages with compatible gate drive requirements (4.5V and 10V). The IRL3803PBF exceeds all electrical specifications of the NTP90N02G, including voltage, current, and power dissipation ratings. Pin-to-pin compatibility is maintained.

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

A: The IRL3803PBF provides higher Vdss (30V vs. 24V), greater continuous drain current (140A vs. 90A), and superior power dissipation (200W vs. 85W). Gate charge is higher (140nC vs. 29nC), which may affect switching speed in high-frequency applications. Input capacitance is also higher (5000pF vs. 2120pF).

Q: Are there thermal management differences?

A: The IRL3803PBF has a higher power dissipation rating (200W vs. 85W) and extended maximum junction temperature range (175°C vs. 150°C). Both devices use the same TO-220 package, so thermal interface and heatsinking approach remain unchanged.

Q: Does the higher gate charge of the IRL3803PBF affect gate drive circuit design?

A: The IRL3803PBF requires approximately 4.8 times more gate charge (140nC vs. 29nC) than the NTP90N02G. Existing gate drive circuits must supply sufficient charge at the specified drive voltages (4.5V and 10V). Gate drive current capability should be verified for the target application.

Q: What is the moisture sensitivity level for both parts?

A: Both the NTP90N02G and IRL3803PBF carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling.

Q: Are there any supply chain considerations?

A: The NTP90N02G is Obsolete with 18,600 pieces in stock. The IRL3803PBF is classified as Not For New Designs but maintains 10,080 pieces in inventory. Both parts are available for immediate procurement.

Q: Can the IRL3803PBF be used in applications requiring the exact Rds On specification of the NTP90N02G?

A: The IRL3803PBF Rds On is 6mOhm at 71A and 10V gate drive, compared to 5.8mOhm at 90A and 10V for the NTP90N02G. The difference is marginal (approximately 3.4% higher). Applications with strict on-resistance requirements should evaluate the impact on power dissipation and thermal performance.

Q: What is the significance of the different gate threshold voltages?

A: The IRL3803PBF has a lower gate threshold voltage (1V vs. 3V at 250µA). This indicates faster turn-on characteristics but does not affect compatibility with standard gate drive circuits operating at 4.5V or 10V.