CSD17507Q5AT Equivalent & Substitute Parts

Part Overview

The CSD17507Q5AT is an N-Channel MOSFET manufactured by Texas Instruments, part of the NexFET™ series. This device is a 30V, 13A (Ta) / 65A (Tc) surface mount transistor housed in an 8-VSONP (5x6) package. The part is classified as "Not For New Designs," indicating it has been superseded in Texas Instruments' product portfolio. Identification of equivalent and substitute parts is necessary for applications requiring continued support, design flexibility, or inventory optimization while maintaining electrical and mechanical compatibility.

Substiute Parts

CSD17507Q5AT

Texas InstrumentsIn Stock: 1996CSD17507Q5AT Datasheet

Current PartRFQ

CSD17579Q5AT

Texas InstrumentsIn Stock: 2778CSD17579Q5AT Datasheet

SimilarRFQ

CSD17507Q5A

Texas InstrumentsIn Stock: 17913CSD17507Q5A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of N-Channel MOSFETs is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Drain to Source Voltage (Vdss) must be equal to or greater than the main part
• Continuous Drain Current (Id) must meet or exceed application requirements
• On-state resistance (Rds On) must be compatible with thermal and power dissipation constraints
• Gate threshold voltage (Vgs(th)) must fall within acceptable switching characteristics
• Gate charge (Qg) and input capacitance (Ciss) affect switching speed and drive circuit requirements
• Operating temperature range must encompass the application environment

Mechanical Compatibility Criteria:

• Package type must be identical (8-PowerTDFN)
• Mounting type must be surface mount
• Pin configuration must be compatible with existing PCB layouts

Compliance and Status Criteria:

• Product status (Active vs. Not For New Designs) affects long-term availability
• RoHS and REACH compliance status determines regulatory suitability

The CSD17507Q5AT has two identified substitutes: CSD17507Q5A (parametric equivalent) and CSD17579Q5AT (similar performance upgrade).

Parameter Comparison

Engineering Selection Recommendations

CSD17507Q5A (Parametric Equivalent): This part is the direct parametric equivalent to the CSD17507Q5AT, offering identical electrical specifications including Vdss, Id ratings, Rds On, Vgs(th), gate charge, and input capacitance. The primary distinction is product status and compliance: CSD17507Q5A is Active and ROHS3 Compliant with REACH Unaffected status, whereas the main part is Not For New Designs with unspecified compliance. Packaging differs only in format (Cut Tape & Digi-Reel® versus Tape & Reel). This substitute is suitable for direct replacement in existing designs and is recommended for new applications requiring identical electrical performance.

CSD17579Q5AT (Similar Upgrade): This part represents a performance upgrade within the same package and voltage class. It provides higher continuous drain current (25A Ta versus 13A Ta), lower on-state resistance (9.7 mOhm versus 10.8 mOhm), and significantly improved thermal performance (36W Tc versus unspecified). Gate charge and input capacitance are higher (15.1 nC and 1030 pF respectively), which may require drive circuit evaluation. CSD17579Q5AT is Active and fully compliant (ROHS3, REACH Unaffected). This substitute is applicable when higher current capacity or improved thermal characteristics are beneficial to the application, provided the increased gate charge does not conflict with drive circuit specifications.

Both substitutes maintain mechanical compatibility through identical 8-PowerTDFN packaging and surface mount mounting type. Selection between CSD17507Q5A and CSD17579Q5AT depends on whether the application requires parametric equivalence or can benefit from enhanced current and thermal performance.

Frequently Asked Questions (FAQ)

Q: Can CSD17507Q5A be used as a direct replacement for CSD17507Q5AT?

A: Yes. CSD17507Q5A is a parametric equivalent with identical electrical specifications (Vdss, Id, Rds On, Vgs(th), Qg, Ciss, and operating temperature range). Both devices use the same 8-PowerTDFN package and surface mount configuration. The primary differences are product status (Active versus Not For New Designs) and compliance certifications (ROHS3 and REACH Unaffected versus Not applicable). Direct PCB-level substitution is supported.

Q: What are the key differences between CSD17507Q5A and CSD17579Q5AT?

A: CSD17579Q5AT provides enhanced performance in current capacity and thermal handling. It delivers 25A continuous drain current (Ta) compared to 13A, achieves lower on-state resistance (9.7 mOhm versus 10.8 mOhm), and offers superior thermal dissipation (36W Tc). However, gate charge increases from 3.6 nC to 15.1 nC, and input capacitance doubles from 530 pF to 1030 pF. These higher capacitance values may require evaluation of the gate drive circuit to ensure adequate switching speed and power delivery.

Q: Are all three parts pin-compatible?

A: Yes. CSD17507Q5AT, CSD17507Q5A, and CSD17579Q5AT all use the 8-PowerTDFN package with identical pin configuration and surface mount footprint. No PCB layout modifications are required for substitution.

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

A: CSD17507Q5A is recommended for new designs requiring parametric equivalence to the original specification. CSD17579Q5AT is recommended if the application can utilize higher current capacity or improved thermal performance and the gate drive circuit can accommodate the increased gate charge and input capacitance. Both parts are Active with current compliance certifications.

Q: What is the significance of the "Not For New Designs" status on CSD17507Q5AT?

A: This status indicates that Texas Instruments has superseded this part in their product portfolio. While existing inventory may be available, the manufacturer does not recommend its use in new designs. Substitution with an Active part (CSD17507Q5A or CSD17579Q5AT) ensures access to ongoing manufacturer support, updated documentation, and long-term availability.

Q: How do the packaging options differ between the main part and substitutes?

A: CSD17507Q5AT is supplied in Tape & Reel (TR) format. Both CSD17507Q5A and CSD17579Q5AT are available in Cut Tape (CT) and Digi-Reel® formats. These are packaging and delivery options that do not affect electrical or mechanical compatibility. Selection depends on procurement and assembly requirements.

Q: Can CSD17579Q5AT be used in applications designed for CSD17507Q5AT without circuit modifications?

A: CSD17579Q5AT is electrically compatible at the component level due to identical Vdss, matching operating temperature range, and compatible pin configuration. However, the increased gate charge (15.1 nC versus 3.6 nC) and input capacitance (1030 pF versus 530 pF) require evaluation of the gate drive circuit. If the drive circuit has sufficient current capacity and switching speed capability, substitution is feasible. If the drive circuit is marginal or optimized for the lower capacitance of the original part, performance degradation or circuit instability may occur.

Q: Are there any compliance or regulatory differences between the three parts?

A: CSD17507Q5AT has unspecified RoHS and REACH status. CSD17507Q5A and CSD17579Q5AT are both ROHS3 Compliant and REACH Unaffected. For applications subject to RoHS or REACH regulations, substitution with CSD17507Q5A or CSD17579Q5AT is required to ensure regulatory compliance.