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DMP2170U-13 Equivalent & Substitute Parts
Part Overview
The DMP2170U-13 is a P-Channel MOSFET manufactured by Diodes Incorporated, rated for 20V drain-to-source voltage with 3.1A continuous drain current at 25°C. The device is housed in a SOT-23-3 surface mount package and is qualified to AEC-Q101 automotive standards. This part is currently in active production status with 836 pieces available in inventory.
Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the specified parameter range. Alternative sources and packaging variants may be required due to inventory availability, lead time considerations, or design flexibility requirements.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| FET Type | P-Channel | — |
| Drain to Source Voltage (Vdss) | 20 | V |
| Continuous Drain Current (Id) @ 25°C | 3.1 | A |
| Rds On (Max) @ Id, Vgs | 90 mOhm @ 3.5A, 4.5V | — |
| Vgs(th) (Max) @ Id | 1.25 | V @ 250µA |
| Gate Charge (Qg) (Max) @ Vgs | 7.8 | nC @ 10V |
| Power Dissipation (Max) | 780 | mW |
| Operating Temperature Range | -55 to 150 | °C (TJ) |
| Package Type | SOT-23-3 | — |
| Mounting Type | Surface Mount | — |
| Grade | Automotive | — |
| Qualification | AEC-Q101 | — |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitution eligibility is determined by the following criteria:
Electrical Compatibility Requirements:
- FET Type: P-Channel topology required
- Drain to Source Voltage (Vdss): Minimum 20V rating
- Continuous Drain Current (Id): Minimum 1.8A at 25°C (allows for design margin reduction)
- Rds On (Max): Not to exceed 92 mOhm at rated conditions
- Gate Threshold Voltage (Vgs(th)): Range 1.2V to 1.5V @ 250µA
- Operating Temperature: Full range -55°C to 150°C (TJ) preferred; 150°C minimum acceptable
- Vgs (Max): ±8V minimum rating
Mechanical Compatibility Requirements:
- Package Type: SOT-23-3 or equivalent 3-pin surface mount variant
- Mounting Type: Surface Mount
- Compliance: RoHS3 compliant, REACH unaffected
Qualification & Status Requirements:
- Product Status: Active
- Moisture Sensitivity Level: MSL 1 (Unlimited) preferred
Substitute parts meeting these criteria are grouped as parametric equivalents or manufacturer-recommended alternatives based on inventory availability and electrical performance alignment.
Parameter Comparison
| Parameter | DMP2170U-13 (Main) | DMP2170U-7 | AO3423 | FDN340P | NTR4101PT1H |
|---|---|---|---|---|---|
| Manufacturer | Diodes Inc. | Diodes Inc. | Alpha & Omega | UMW | onsemi |
| FET Type | P-Channel | P-Channel | P-Channel | P-Channel | P-Channel |
| Vdss (V) | 20 | 20 | 20 | 20 | 20 |
| Id @ 25°C (A) | 3.1 | 3.1 | 2.0 | 2.0 | 1.8 |
| Rds On (Max) (mOhm) | 90 @ 3.5A, 4.5V | 90 @ 3.5A, 4.5V | 92 @ 2A, 10V | 70 @ 2A, 4.5V | 85 @ 1.6A, 4.5V |
| Vgs(th) (Max) @ 250µA (V) | 1.25 | 1.25 | 1.4 | 1.5 | 1.2 |
| Qg (Max) @ Vgs (nC) | 7.8 @ 10V | 7.8 @ 10V | 6.6 @ 4.5V | 8 @ 4.5V | 8.5 @ 4.5V |
| Ciss (Max) @ 10V (pF) | 303 | 303 | 620 | 600 | 675 |
| Power Dissipation (Max) (mW) | 780 | 780 | 1400 | 1100 | 420 |
| Operating Temperature (°C) | -55 to 150 | -55 to 150 | -55 to 150 | 150 (max) | -55 to 150 |
| Package | SOT-23-3 | SOT-23-3 | SOT-23-3 | SOT-23 | SOT-23-3 |
| Mounting | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Grade | Automotive | Automotive | Commercial | Commercial | Commercial |
| Qualification | AEC-Q101 | AEC-Q101 | None listed | None listed | None listed |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Inventory (Pcs) | 836 | 11400 | 999100 | 95200 | 26100 |
Engineering Selection Recommendations
DMP2170U-7 (Parametric Equivalent)
The DMP2170U-7 is a direct parametric equivalent to the DMP2170U-13, manufactured by Diodes Incorporated. Both devices share identical electrical specifications including 20V Vdss, 3.1A continuous drain current, 90 mOhm Rds On, and 780 mW power dissipation. Both are AEC-Q101 qualified automotive-grade components with identical operating temperature range (-55°C to 150°C). The DMP2170U-7 differs only in packaging variant (Tape & Reel designation) and is available in significantly higher inventory (11,400 pieces). This part is suitable for direct substitution in all applications where the DMP2170U-13 is specified.
AO3423 (Manufacturer-Recommended Alternative)
The AO3423 from Alpha & Omega Semiconductor is a P-Channel MOSFET with 20V Vdss rating and 2A continuous drain current. This device exhibits reduced current capability (2A versus 3.1A) and lower power dissipation (1.4W versus 780 mW). The Rds On specification is 92 mOhm at 2A and 10V gate voltage, compared to 90 mOhm at 3.5A and 4.5V for the main part. The AO3423 operates across the full -55°C to 150°C temperature range and is RoHS3 compliant. This part is suitable for applications where the reduced current rating is acceptable and where commercial-grade qualification is permissible. Inventory availability is highest among all alternatives (999,100 pieces).
FDN340P (Manufacturer-Recommended Alternative)
The FDN340P from UMW is a P-Channel MOSFET with 20V Vdss and 2A continuous drain current. This device features superior Rds On performance at 70 mOhm at 2A and 4.5V gate voltage. However, the maximum operating temperature is specified as 150°C (single value) rather than a range, and the Vgs (Max) rating is ±8V compared to ±12V for the main part. Input capacitance is higher at 600 pF. This part is suitable for applications where reduced on-resistance is prioritized and where the temperature specification and gate voltage limits are compatible with the design. Inventory availability is 95,200 pieces.
NTR4101PT1H (Manufacturer-Recommended Alternative)
The NTR4101PT1H from onsemi is a P-Channel MOSFET with 20V Vdss and 1.8A continuous drain current. This device has the lowest power dissipation (420 mW) and operates across the full -55°C to 150°C temperature range. The Rds On is 85 mOhm at 1.6A and 4.5V gate voltage. The Vgs (Max) rating is ±8V. This part is suitable for applications where current requirements are lower and thermal management is a priority. Inventory availability is 26,100 pieces.
Frequently Asked Questions (FAQ)
Q: Can DMP2170U-7 be used as a direct replacement for DMP2170U-13?
A: Yes. The DMP2170U-7 is a parametric equivalent with identical electrical specifications and automotive-grade AEC-Q101 qualification. The only difference is the packaging variant designation. Both devices are manufactured by Diodes Incorporated and share the same base product number (DMP2170).
Q: What is the primary limitation of the AO3423 compared to the DMP2170U-13?
A: The AO3423 has a reduced continuous drain current rating of 2A at 25°C, compared to 3.1A for the DMP2170U-13. Applications requiring the full 3.1A current capability cannot use this substitute. Additionally, the AO3423 is commercial-grade rather than automotive-grade with AEC-Q101 qualification.
Q: Is the FDN340P suitable for automotive applications?
A: The FDN340P is not qualified to automotive standards and lacks AEC-Q101 certification. It is suitable for commercial-grade applications only. Additionally, the maximum operating temperature is specified as a single value (150°C) rather than a range, which may limit its use in temperature-cycling environments.
Q: What are the key differences in gate charge between these devices?
A: The DMP2170U-13 and DMP2170U-7 both have 7.8 nC gate charge at 10V. The AO3423 has 6.6 nC at 4.5V, the FDN340P has 8 nC at 4.5V, and the NTR4101PT1H has 8.5 nC at 4.5V. Lower gate charge generally results in faster switching performance and reduced driver power requirements.
Q: Can these devices be used interchangeably in high-current applications?
A: No. The DMP2170U-13 and DMP2170U-7 are rated for 3.1A continuous drain current, while the AO3423, FDN340P, and NTR4101PT1H are rated for 2A, 2A, and 1.8A respectively. Applications requiring sustained currents above 2A must use either the DMP2170U-13 or DMP2170U-7.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All listed substitute parts (DMP2170U-7, AO3423, FDN340P, and NTR4101PT1H) are RoHS3 compliant and REACH unaffected, matching the compliance status of the DMP2170U-13.
Q: What is the difference in input capacitance between the main part and substitutes?
A: The DMP2170U-13 has 303 pF input capacitance at 10V. The AO3423 has 620 pF, the FDN340P has 600 pF, and the NTR4101PT1H has 675 pF. Higher input capacitance increases gate drive requirements and may affect switching speed in high-frequency applications.
Q: Which substitute offers the best on-resistance performance?
A: The FDN340P offers the lowest on-resistance at 70 mOhm at 2A and 4.5V gate voltage. However, this advantage is limited to the 2A current rating. At the DMP2170U-13's rated 3.5A and 4.5V, the FDN340P cannot be directly compared due to its lower current rating.
Q: Is the NTR4101PT1H suitable for high-power applications?
A: The NTR4101PT1H has the lowest power dissipation rating (420 mW) among all listed alternatives. This device is suitable for applications where thermal management is critical and current requirements do not exceed 1.8A at 25°C.
Q: What packaging variants are available for these devices?
A: All devices use SOT-23-3 or equivalent 3-pin surface mount packages. The DMP2170U-13 and DMP2170U-7 are supplied in Tape & Reel (TR) packaging, while the AO3423, FDN340P, and NTR4101PT1H are supplied in Cut Tape (CT) and Digi-Reel® packaging variants.
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