CTLDM7590 TR P-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The CTLDM7590 TR is a P-Channel MOSFET manufactured by Central Semiconductor Corp, designed for surface mount applications in the TLM3D6D8 package. This device operates at 20V drain-to-source voltage with 140mA continuous drain current and 125mW power dissipation. The part is currently classified as obsolete, making identification of functionally equivalent substitutes necessary for ongoing design support and component procurement.

Substiute Parts

CTLDM7590 TR

Central Semiconductor CorpIn Stock: 9784CTLDM7590 TR Datasheet

Current PartRFQ

DMP32D9UFZ-7B

Diodes IncorporatedIn Stock: 5199DMP32D9UFZ-7B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CTLDM7590 TR is based on the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• FET Type: P-Channel topology must be maintained
• Drain to Source Voltage (Vdss): Substitute must equal or exceed 20V
• Continuous Drain Current (Id): Substitute must equal or exceed 140mA at 25°C
• Rds On (Max): Substitute must not exceed 5 Ohm @ 100mA, 4.5V
• Vgs(th): Threshold voltage must be compatible at 1V @ 250µA
• Gate Charge (Qg): Lower or equal values preferred for switching performance
• Power Dissipation: Substitute must support minimum 125mW (Ta)
• Operating Temperature: Substitute must cover -65°C to 150°C range

Mechanical Compatibility Criteria:

• Package Type: 3-XFDFN form factor
• Mounting Type: Surface Mount
• Moisture Sensitivity Level: MSL 1 (Unlimited)

The DMP32D9UFZ-7B from Diodes Incorporated meets these substitution criteria with enhanced electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The DMP32D9UFZ-7B from Diodes Incorporated is a qualified substitute for the obsolete CTLDM7590 TR based on the following engineering factors:

Electrical Performance: The substitute meets or exceeds all critical electrical parameters. Vdss rating of 30V provides 50% margin above the 20V requirement. Continuous drain current of 200mA exceeds the 140mA specification. Rds On matching at 5 Ohm @ 100mA, 4.5V ensures equivalent on-state resistance. Gate charge reduction from 0.5nC to 0.35nC provides improved switching characteristics.

Mechanical Compatibility: Both devices utilize identical 3-XFDFN surface mount packaging with MSL 1 rating, ensuring direct PCB footprint compatibility without layout modifications.

Product Status & Compliance: The DMP32D9UFZ-7B is an active production part from Diodes Incorporated, ensuring long-term availability and supply chain stability. Both parts carry REACH Unaffected and EAR99 ECCN classifications. The substitute is RoHS3 Compliant, meeting current environmental standards.

Temperature Range Consideration: The substitute operates from -55°C to 150°C, covering the upper temperature requirement of the original part. Applications requiring the full -65°C lower limit must evaluate thermal performance at the lower bound.

Frequently Asked Questions (FAQ)

Q: Can the DMP32D9UFZ-7B directly replace the CTLDM7590 TR without PCB modifications?

A: Yes. Both devices share identical 3-XFDFN surface mount packaging and pinout configuration. No PCB layout changes are required for mechanical or electrical interface compatibility.

Q: What is the significance of the higher Vdss rating (30V vs 20V) on the substitute?

A: The 30V Vdss rating on the DMP32D9UFZ-7B provides additional voltage margin and design headroom. This does not create incompatibility; the device operates safely at the original 20V specification with enhanced reliability margin.

Q: Does the lower gate charge (0.35nC vs 0.5nC) affect circuit operation?

A: Lower gate charge improves switching speed and reduces driver power consumption. This is a performance enhancement that does not compromise compatibility. Gate driver circuits designed for the original part will function correctly with the substitute.

Q: Why does the substitute have higher power dissipation rating (390mW vs 125mW)?

A: The 390mW rating reflects the thermal capability of the DMP32D9UFZ-7B package design. This higher rating does not indicate increased power consumption in your circuit; actual dissipation depends on application current and duty cycle. The substitute can safely handle the thermal load of the original application.

Q: Is the operating temperature range difference (-55°C vs -65°C minimum) a concern?

A: Applications operating above -55°C encounter no limitation. For systems requiring -65°C operation, thermal performance and device reliability at the lower temperature bound must be evaluated against specific application requirements.

Q: What compliance certifications apply to the substitute part?

A: The DMP32D9UFZ-7B carries REACH Unaffected status, EAR99 ECCN classification, and RoHS3 Compliance certification, meeting current regulatory and environmental standards for electronic component procurement.

Q: Are there any circuit design changes required when switching from CTLDM7590 TR to DMP32D9UFZ-7B?

A: No circuit design changes are required. The substitute maintains electrical parameter compatibility at the gate drive voltage (4.5V) and threshold voltage (1V @ 250µA) levels. Existing gate driver circuits and application schematics remain valid.