STTH8R04G-TR STMicroelectronics Diode (Other) In Stock
STMicroelectronics STTH8R04G-TR is a 400 V, 8 A ultra-fast recovery silicon rectifier diode optimized for freewheeling and output rectification in switch-mode power supplies, with a maximum forward voltage of 1.5 V in a surface-mount D2PAK package. RoHS-compliant with tape-and-reel packaging for automated assembly. Available globally with competitive pricing.
- Manufacturer
- STMicroelectronics
- Package
- Other
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- STTH8R04G-TR Datasheet PDF
- Category
- Diode
- Price
- From $0.3072(MOQ 1)
- Temp Range
- -40.0°C to 175.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 400 V reverse voltage with 8 A average forward current for high-power SMPS output and freewheeling stages
- Ultra-fast recovery characteristic minimizing switching losses in high-frequency inverter and PFC circuit topologies
- Surface-mount D2PAK package enabling low thermal resistance and efficient heat spreading on PCB copper pours
Applications
The STTH8R04G-TR is intended as a freewheeling diode in DC motor drives, synchronous buck converters, and boost PFC stages operating at 100 kHz to several hundred kilohertz switching frequencies. Its 400 V blocking voltage and 8 A continuous current rating suit single-phase rectification and output stage clamping in AC-DC adapters and industrial switching power supplies. The D2PAK package's exposed pad provides excellent thermal coupling to PCB heat-spreading copper areas, enabling high power density without an additional heatsink.
Specifications
| Factory Lead Time | 25Weeks |
| YTEOL | 6.45 |
| Additional Feature | FREE WHEELING DIODE |
| Application | ULTRA FAST RECOVERY |
| Case Connection | CATHODE |
| Configuration | SINGLE |
| Diode Element Material | SILICON |
| Diode Type | RECTIFIER DIODE |
| Forward Voltage-Max (VF) | 1.5V |
| JESD-30 Code | R-PSSO-G2 |
| JESD-609 Code | e3 |
| Non-rep Pk Forward Current-Max | 120A |
| Number of Elements | 1 |
| Number of Phases | 1 |
| Output Current-Max | 8A |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 245 |
| Qualification Status | Not Qualified |
| Rep Pk Reverse Voltage-Max | 400V |
| Reverse Current-Max | 10 µA |
| Reverse Recovery Time-Max | 0.05 µs |
| Reverse Test Voltage | 400V |
| Surface Mount | YES |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Position | SINGLE |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8541.10.00.80 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What are the voltage and current ratings of the STTH8R04G-TR, and what switching topology is it designed for?
The STTH8R04G-TR is rated for 400 V reverse blocking voltage and 8 A average forward current. It is specifically designed as an ultra-fast recovery rectifier and freewheeling diode for switch-mode power supply topologies including boost PFC, buck-boost converters, and DC motor drive output stages operating at high switching frequencies.
How does the ultra-fast recovery characteristic of STTH8R04G-TR reduce power losses in high-frequency circuits?
Ultra-fast recovery diodes have a very short reverse recovery time (trr), meaning stored minority carriers are removed quickly when the diode turns off. In a 100 kHz or higher switching converter, a slow-recovery diode would dissipate significant energy during each switching cycle as reverse recovery current flows through the circuit. The STTH8R04G-TR's fast trr minimizes this energy, reducing both switching losses and EMI generated by abrupt current spikes.
What thermal advantage does the D2PAK package provide for the STTH8R04G-TR in high-current applications?
The D2PAK (TO-263) package has a large exposed metal tab on the bottom that solders directly to the PCB copper plane, providing a very low junction-to-board thermal resistance compared to leaded axial or small SMD packages. For an 8 A diode dissipating up to several watts at 1.5 V forward drop, this direct thermal path to the PCB copper is critical for maintaining junction temperature below the maximum rating without an external heatsink.
Is STTH8R04G-TR compatible with automated SMT assembly, and what packaging format does the TR suffix indicate?
Yes. The TR suffix designates tape-and-reel packaging, confirming compatibility with standard pick-and-place automated SMT assembly equipment. D2PAK components on tape-and-reel are fed directly into reflow assembly lines, enabling high-volume production without manual placement. The 400 V / 8 A rating in surface-mount form also eliminates through-hole drilling costs compared to axial TO-220 package equivalents.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.5790 | $0.58 |
| 1000+ | $0.4334 | $433.40 |
| 8000+ | $0.3104 | $2483.20 |
| 16000+ | $0.3088 | $4940.80 |
| 32000+ | $0.3072 | $9830.40 |
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