DMN100-7-F Equivalent & Substitute Parts

Part Overview

The DMN100-7-F is an N-Channel MOSFET manufactured by Diodes Incorporated, rated for 30V drain-to-source voltage with 1.1A continuous drain current at 25°C. The device is housed in a SC-59-3 (SOT-23-3) surface mount package and dissipates a maximum of 500mW. This part is classified as obsolete, necessitating identification of functionally equivalent alternatives for new designs and ongoing production support.

Substiute Parts

DMN100-7-F

Diodes IncorporatedIn Stock: 15534DMN100-7-F Datasheet

Current PartRFQ

IRLML2803TRPBF

Infineon TechnologiesIn Stock: 245508IRLML2803TRPBF Datasheet

MFR RecommendedRFQ

RSR025N03TL

Rohm SemiconductorIn Stock: 35047RSR025N03TL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DMN100-7-F is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Drain-to-source voltage (Vdss) must equal or exceed 30V
• Continuous drain current (Id) must meet or exceed 1.1A at 25°C
• On-state resistance (Rds On) must not significantly degrade circuit performance
• Power dissipation capability must support the application thermal environment
• Gate threshold voltage (Vgs(th)) and gate charge (Qg) must be compatible with existing drive circuitry

Mechanical Compatibility Requirements:

• Surface mount package format (SOT-23-3 or equivalent pin-compatible alternatives)
• Identical or compatible pinout configuration
• Moisture sensitivity level (MSL) of 1 or better

Compliance Requirements:

• RoHS3 compliance mandatory
• REACH unaffected status required

The substitute parts listed below satisfy these criteria within the allowed parameter ranges specified for this product category.

Parameter Comparison

Engineering Selection Recommendations

IRLML2803TRPBF (Infineon Technologies) — Primary Substitute

The IRLML2803TRPBF is the recommended primary substitute for the DMN100-7-F. This device maintains identical voltage and temperature specifications while providing 1.2A continuous drain current, exceeding the original 1.1A requirement. The part is in active production status, ensuring long-term availability and supply chain stability. Electrical parameters are closely matched: Rds On is 250mOhm versus 240mOhm, and gate charge is 5nC versus 5.5nC. The package format is identical (SOT-23-3), enabling direct board-level substitution without layout modifications. RoHS3 compliance and MSL-1 rating confirm regulatory and environmental compatibility.

RSR025N03TL (Rohm Semiconductor) — Secondary Substitute

The RSR025N03TL provides enhanced performance characteristics with 2.5A continuous drain current and significantly lower on-state resistance (70mOhm). This device is suitable for applications requiring improved thermal performance or higher current capacity. However, the part is classified as "Not For New Designs," limiting its use to legacy system support or existing production lines. The package format (SC-96) differs from the original SOT-23-3, requiring board layout modification and potential footprint redesign. This substitute is appropriate only when the enhanced current and thermal capabilities justify the mechanical redesign effort and when long-term availability concerns are acceptable.

Frequently Asked Questions (FAQ)

Q: Can the IRLML2803TRPBF be used as a direct replacement for the DMN100-7-F without circuit modifications?

A: Yes. The IRLML2803TRPBF is pin-compatible and electrically compatible with the DMN100-7-F. Both devices use the SOT-23-3 package format with identical pinout. Electrical parameters are within acceptable tolerance ranges for direct substitution. No circuit modifications are required.

Q: What is the primary difference between the IRLML2803TRPBF and RSR025N03TL substitutes?

A: The IRLML2803TRPBF maintains the original SOT-23-3 package format and is in active production. The RSR025N03TL uses a different package (SC-96), offers higher current capacity (2.5A versus 1.2A), and lower on-state resistance (70mOhm versus 250mOhm), but is not recommended for new designs. Package differences require board layout modifications for the Rohm device.

Q: Are both substitute parts RoHS3 compliant?

A: Yes. Both the IRLML2803TRPBF and RSR025N03TL are RoHS3 compliant with MSL-1 moisture sensitivity ratings, meeting all regulatory requirements for the DMN100-7-F application.

Q: Why is the DMN100-7-F classified as obsolete?

A: The DMN100-7-F is no longer in active production. Diodes Incorporated has transitioned this product line. Existing inventory remains available, but new designs should transition to active alternatives such as the IRLML2803TRPBF.

Q: What is the impact of the lower gate threshold voltage (Vgs(th)) in the IRLML2803TRPBF?

A: The IRLML2803TRPBF has a lower gate threshold voltage (1V @ 250µA versus 3V @ 1mA). This indicates faster switching response at lower gate drive voltages. For most applications, this represents an improvement in drive efficiency. Verify compatibility with existing gate drive circuitry if operating near the threshold region.

Q: Can the RSR025N03TL be used in high-temperature applications?

A: The RSR025N03TL supports the same operating temperature range (-55°C to 150°C) as the original DMN100-7-F. However, the maximum junction temperature specification is listed as 150°C (TJ) without explicit Ta rating, whereas the original part specifies 150°C (TJ). Thermal design calculations should account for the higher power dissipation capability (1W versus 500mW) when evaluating thermal performance.

Q: What inventory status should influence the selection between IRLML2803TRPBF and RSR025N03TL?

A: The IRLML2803TRPBF has significantly higher inventory availability (245,400 pieces) compared to the RSR025N03TL (35,020 pieces). For production continuity and supply chain reliability, the IRLML2803TRPBF is the preferred choice. The RSR025N03TL should be reserved for applications where its enhanced performance characteristics justify the lower inventory depth and "Not For New Designs" status.