CSD25303W1015 Equivalent & Substitute Parts

Part Overview

The CSD25303W1015 is a P-Channel MOSFET manufactured by Texas Instruments, part of the NexFET™ series. This device is rated for 20V drain-to-source voltage with 3A continuous drain current in a compact 6-DSBGA (1x1.5mm) surface mount package. The part is currently classified as obsolete, which necessitates identification of active equivalent alternatives for ongoing design support and procurement.

Key Parameters

Parameter	Value	Unit
FET Type	P-Channel	—
Drain to Source Voltage (Vdss)	20	V
Current - Continuous Drain (Id) @ 25°C	3	A
Rds On (Max) @ 1.5A, 4.5V	58	mOhm
Vgs(th) (Max) @ 250µA	1	V
Gate Charge (Qg) (Max) @ 4.5V	4.3	nC
Input Capacitance (Ciss) (Max) @ 10V	435	pF
Power Dissipation (Max)	1.5	W
Operating Temperature Range	-55 to 150	°C
Package Type	6-DSBGA (1x1.5)	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitution of the CSD25303W1015 is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

FET Type: P-Channel topology must be maintained
Drain to Source Voltage (Vdss): 20V rating required
Continuous Drain Current (Id): 3A minimum at 25°C
Gate Charge (Qg): Comparable switching characteristics
Input Capacitance (Ciss): Similar gate drive requirements
Vgs(th): Threshold voltage within specified range
Operating Temperature: -55°C to 150°C range

Mechanical Equivalence Criteria:

Package: 6-DSBGA (1x1.5mm) form factor
Mounting: Surface mount technology
Pin configuration: Identical pinout

The CSD25304W1015 meets all substitution criteria as an active product within the same NexFET™ series, sharing identical voltage and current ratings, package geometry, and thermal operating range.

Parameter Comparison

Parameter	CSD25303W1015	CSD25304W1015	Unit
Manufacturer	Texas Instruments	Texas Instruments	—
Series	NexFET™	NexFET™	—
Product Status	Obsolete	Active	—
FET Type	P-Channel	P-Channel	—
Technology	MOSFET (Metal Oxide)	MOSFET (Metal Oxide)	—
Drain to Source Voltage (Vdss)	20	20	V
Current - Continuous Drain (Id) @ 25°C	3	3	A
Rds On (Max) @ 1.5A, 4.5V	58	32.5	mOhm
Vgs(th) (Max) @ 250µA	1	1.15	V
Gate Charge (Qg) (Max) @ 4.5V	4.3	4.4	nC
Input Capacitance (Ciss) (Max) @ 10V	435	595	pF
Power Dissipation (Max)	1.5	0.75	W
Operating Temperature Range	-55 to 150	-55 to 150	°C
Package Type	6-DSBGA (1x1.5)	6-DSBGA (1x1.5)	—
Mounting Type	Surface Mount	Surface Mount	—
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	—
REACH Status	REACH Unaffected	REACH Unaffected	—

Engineering Selection Recommendations

CSD25304W1015 as Primary Substitute:

The CSD25304W1015 is the direct active equivalent for the obsolete CSD25303W1015. Both devices share identical electrical ratings (20V Vdss, 3A Id), package geometry (6-DSBGA 1x1.5mm), and thermal operating range (-55°C to 150°C). The CSD25304W1015 carries active product status with full manufacturing support and availability (55,300 units in stock versus 6,200 for the obsolete part).

Compliance and Certification:

Both parts maintain ROHS3 compliance, REACH unaffected status, and MSL Level 1 (unlimited moisture sensitivity). The CSD25304W1015 is suitable for direct replacement in existing designs without redesign or re-qualification requirements.

Performance Considerations:

The CSD25304W1015 exhibits improved on-resistance (32.5 mOhm versus 58 mOhm at 1.5A, 4.5V) and reduced power dissipation (750 mW versus 1.5W), resulting in lower thermal load and improved efficiency. These improvements are beneficial for thermal management and power budget optimization.

Frequently Asked Questions (FAQ)

Q: Can the CSD25304W1015 be used as a direct drop-in replacement for the CSD25303W1015?

A: Yes. Both devices share identical Vdss (20V), Id (3A), package (6-DSBGA 1x1.5mm), pinout, and operating temperature range (-55°C to 150°C). No circuit modifications are required for substitution.

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

A: The primary differences are product status (CSD25304W1015 is active; CSD25303W1015 is obsolete) and electrical performance. The CSD25304W1015 has lower on-resistance (32.5 mOhm versus 58 mOhm) and reduced power dissipation (750 mW versus 1.5W), both favorable characteristics for thermal and efficiency performance.

Q: Are there any package or pinout differences?

A: No. Both parts use the 6-DSBGA (1x1.5mm) surface mount package with identical pinout and mechanical dimensions.

Q: What is the impact of the higher input capacitance (Ciss) in the CSD25304W1015?

A: The CSD25304W1015 has higher input capacitance (595 pF versus 435 pF at 10V). This requires slightly higher gate drive charge but remains within acceptable limits for standard gate driver circuits. Gate charge (Qg) is nearly identical (4.4 nC versus 4.3 nC), indicating comparable switching performance.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the CSD25303W1015 and CSD25304W1015 are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for industrial and commercial applications.

Q: What is the availability status of these parts?

A: The CSD25303W1015 is obsolete with limited remaining inventory (6,200 units). The CSD25304W1015 is active with substantial availability (55,300 units in stock), ensuring long-term procurement reliability.

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