CSD18503Q5AIn StockTexas Instruments
CSD18503Q5A is a 40V N-Channel MOSFET from Texas Instruments featuring 100A drain current, 6.2mΩ on-resistance, avalanche rating, and logic-level compatibility. From $0.93 in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- CSD18503Q5A Datasheet PDF
- Category
- MOSFET (N-Channel)
- Price
- From $0.9264(MOQ 1)
- Temp Range
- -55.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 40V / 100A N-Channel MOSFET with ultra-low 6.2mΩ drain-source on-resistance for minimal conduction losses
- Avalanche-rated design ensures robustness against inductive switching transients in demanding power applications
- Logic-level gate compatibility enables direct drive from 3.3V and 5V microcontrollers without additional circuitry
- Single device with built-in body diode simplifies synchronous rectification and half-bridge circuit designs
- SON 5x6 package provides excellent thermal performance in compact, high-density power converter layouts
Applications
The CSD18503Q5A is widely used in DC-DC buck and boost converters, synchronous rectification stages, and motor drive circuits where high current and low switching losses are critical. Its logic-level gate threshold makes it ideal for battery management systems, point-of-load regulators, and industrial power supplies controlled by low-voltage microcontrollers. The avalanche-rated construction also suits applications with inductive loads such as solenoid drivers and relay control circuits.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | AVALANCHE RATED, LOGIC LEVEL COMPATIBLE |
| Avalanche Energy Rating (Eas) | 157mJ |
| Case Connection | DRAIN |
| Configuration | SINGLE WITH BUILT-IN DIODE |
| DS Breakdown Voltage-Min | 40V |
| Drain Current-Max (ID) | 100A |
| Drain-source On Resistance-Max | 0.0062Ω |
| FET Technology | METAL-OXIDE SEMICONDUCTOR |
| Feedback Cap-Max (Crss) | 16pF |
| JESD-30 Code | R-PDSO-N8 |
| JESD-609 Code | e3 |
| Number of Elements | 1 |
| Operating Mode | ENHANCEMENT MODE |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Polarity/Channel Type | N-CHANNEL |
| Power Dissipation-Max (Abs) | 120W |
| Pulsed Drain Current-Max (IDM) | 400A |
| Surface Mount | YES |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Transistor Application | SWITCHING |
| Transistor Element Material | SILICON |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8541.29.00.95 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What are the key electrical specifications of the CSD18503Q5A?
The CSD18503Q5A is a 40V N-Channel MOSFET with a maximum drain current (ID) of 100A, a maximum drain-source on-resistance (RDS(on)) of 6.2mΩ, and an avalanche energy rating (Eas) of 157mJ. It is logic-level compatible, allowing gate drive from 3.3V or 5V control signals.
What applications is the CSD18503Q5A best suited for?
The CSD18503Q5A is ideal for high-efficiency DC-DC converters, synchronous rectification, motor drive circuits, battery management systems, and point-of-load power supplies. Its combination of low RDS(on), high current capability, and avalanche rating makes it suitable for both consumer and industrial power applications requiring compact, high-density designs.
What package does the CSD18503Q5A come in and how does it affect thermal performance?
The CSD18503Q5A is available in a SON 5x6mm package, which offers excellent thermal dissipation through the exposed pad on the bottom of the device. This package enables efficient heat transfer to the PCB and supports high continuous drain currents up to 100A in well-designed thermal layouts.
Can the CSD18503Q5A replace other 40V N-Channel MOSFETs in existing designs?
Yes, the CSD18503Q5A can often replace other 40V N-Channel MOSFETs with similar or higher RDS(on) values due to its low 6.2mΩ on-resistance and 100A current rating. Verify pin compatibility with the SON 5x6 footprint and confirm gate threshold voltage requirements match your driver circuit before substituting in an existing design.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $3.6000 | $3.60 |
| 8+ | $2.2500 | $18.00 |
| 24+ | $1.8750 | $45.00 |
| 31+ | $1.5000 | $46.50 |
| 81+ | $1.1250 | $91.13 |
| 100+ | $0.9264 | $92.64 |
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