STTH40P03SW STMicroelectronics Diode (Transistor Outline, Vertical) In Stock
STTH40P03SW is an ultrafast soft-recovery silicon rectifier diode rated for 40 A and 300 V with a maximum forward voltage of 1.15 V in a TO-247 through-hole package. It is designed for PDP energy recovery and high-frequency power conversion with minimal reverse-recovery losses. Available in stock with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Transistor Outline, Vertical
- Pin Count
- 3
- Lifecycle
- OBSOLETE
- Datasheet
- STTH40P03SW Datasheet PDF
- Category
- Diode
- Price
- From $3.4800(MOQ 1)
- Temp Range
- ?°C to 175.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of STTH40P03SW?
- Ultrafast soft-recovery rectifier rated at 40 A continuous forward current and 300 V reverse voltage for high-power conversion stages
- 1.15 V maximum forward voltage minimizes conduction losses in energy recovery circuits and high-frequency rectification stages
- TO-247 package with exposed metal tab provides low thermal resistance for effective heat dissipation in demanding power supply designs
What is STTH40P03SW used for?
STTH40P03SW is designed for high-power PDP (Plasma Display Panel) energy recovery circuits and industrial power supplies where ultrafast switching and soft-recovery characteristics are required to minimize EMI and switching losses. Its 40 A current rating and 300 V blocking voltage make it suitable for boost converter output diodes, free-wheeling diodes in motor drives, and secondary rectifiers in high-frequency SMPS operating at hundreds of kilohertz. The TO-247 package enables direct heatsink mounting for thermal management in continuous high-current operation.
What are the specifications of STTH40P03SW?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Application | ULTRA FAST SOFT RECOVERY POWER |
| Configuration | SINGLE |
| Diode Element Material | SILICON |
| Diode Type | RECTIFIER DIODE |
| Forward Voltage-Max (VF) | 1.15V |
| JEDEC-95 Code | TO-247 |
| JESD-30 Code | R-PSFM-T3 |
| JESD-609 Code | e3 |
| Number of Elements | 1 |
| Number of Phases | 1 |
| Output Current-Max | 40A |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | FLANGE MOUNT |
| Qualification Status | Not Qualified |
| Rep Pk Reverse Voltage-Max | 300V |
| Surface Mount | NO |
| Terminal Finish | TIN |
| Terminal Form | THROUGH-HOLE |
| Terminal Position | SINGLE |
| Package | Transistor Outline, Vertical |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8541.10.00.80 |
Where can I find the STTH40P03SW datasheet?
STTH40P03SW Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for STTH40P03SW?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What current and voltage ratings does STTH40P03SW support in power conversion designs?
STTH40P03SW is rated for 40 A continuous forward current and 300 V reverse blocking voltage, making it suitable for high-power rectification stages in industrial SMPS, motor drives, and PDP energy recovery circuits. Its 1.15 V maximum forward voltage at rated current keeps conduction losses below 46 W at full load, which the TO-247 package dissipates efficiently with appropriate heatsinking.
Why is soft-recovery behavior important for STTH40P03SW in high-frequency switching power supplies?
Soft-recovery behavior means the reverse-recovery current transitions smoothly rather than abruptly snapping off, which reduces voltage overshoots and high-frequency ringing on the switching node. In SMPS operating at 100 kHz to 500 kHz, hard-recovery diodes generate EMI spikes that can exceed the 10 dB conducted emission limits in CISPR 32, requiring additional filtering. STTH40P03SW's soft recovery reduces this noise by a factor of 3 to 5, simplifying EMI filter design.
How does the TO-247 package of STTH40P03SW support thermal management in a 40 A rectifier application?
The TO-247 package includes an exposed metal tab that can be bolted directly to a heatsink, achieving junction-to-case thermal resistance of typically 1°C/W to 2°C/W. At 40 A and 1.15 V forward voltage, the device dissipates approximately 46 W; with a 2°C/W heatsink, the junction temperature rise above ambient is around 92°C, keeping the junction well within the maximum rated operating temperature for reliable continuous operation.
How does STTH40P03SW compare to a standard rectifier for use in a PDP energy recovery stage?
Standard rectifiers have reverse-recovery times of 500 ns to several microseconds and hard turn-off characteristics that cause large current spikes in PDP energy recovery topologies. STTH40P03SW is specifically designed with ultrafast soft recovery to handle the high repetition rates (typically 50 kHz to 200 kHz) of PDP sustain circuits, reducing switching losses and preventing stress on companion IGBTs or MOSFETs that would otherwise require derating by 20% to 30%.
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Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $5.2200 | $5.22 |
| 7+ | $3.8280 | $26.80 |
| 21+ | $3.4800 | $73.08 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
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