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STMicroelectronics STTH30R04G-TR
- Part No.:
- STTH30R04G-TR
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
STTH30R04G-TR.pdf
- Description:
- DIODE GEN PURP 400V 30A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:1,965
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Product details
Overview
STTH30R04G-TR from STMicroelectronics is an ultrafast recovery silicon rectifier diode in D²PAK (TO-263) package, rated for 400 V repetitive peak reverse voltage and 30 A average forward current at Tc = 120 °C. It delivers 24 ns typical reverse recovery time, 0.97 V typical forward voltage at 30 A/150 °C, and 1.15 °C/W junction-to-case thermal resistance-enabling high-efficiency switching in PFC and output rectification stages of industrial SMPS.
For engineers reviewing the STTH30R04G-TR datasheet, STTH30R04G-TR pinout, STTH30R04G-TR application, or STTH30R04G-TR equivalent, key selection criteria include verified trr ≤ 35 ns at 125 °C, IR ≤ 150 µA at 100 °C, VF stability across 25–150 °C, and D²PAK thermal performance under forced conduction cooling.
Technical Context
This diode employs optimized epitaxial structure and lifetime control to achieve ultrafast soft recovery with low QRR and minimal IRR overshoot-critical for reducing EMI and snubber losses in hard-switched topologies. Its rugged junction design supports surge currents up to 300 A (non-repetitive, 10 ms sine) and continuous operation at Tj = 175 °C.
The device is characterized across temperature (–40 to +175 °C) and dynamic conditions (dIF/dt up to 500 A/µs), with trr increasing only 2.1× from 25 °C to 125 °C and VF decreasing with rising junction temperature-enabling predictable conduction loss modeling using P = 0.9 × IF(AV) + 0.01 × IF²(RMS).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Withstands 400 V repetitive reverse voltage without breakdown; suitable for 380 VAC input PFC stages. |
| IF(AV) | 30 A at Tc = 120 °C - Sustains 30 A average forward current with case temperature held at 120 °C via heatsink. |
| trr (typ) | 24 ns at IF = 1 A, dIF/dt = –200 A/µs, VR = 30 V, Tj = 25 °C - Enables >100 kHz switching with low recovery loss. |
| VF (typ) | 0.97 V at IF = 30 A, Tj = 150 °C - Low forward drop reduces conduction loss by ~15% vs. standard fast diodes at full load. |
| Rth(j-c) | 1.15 °C/W - Junction-to-case thermal resistance enables 175 °C max Tj with ≤132 °C case temperature at 30 A. |
| IR (max) | 150 µA at Tj = 100 °C, VR = VRRM - Low leakage preserves efficiency in high-temperature hold-up circuits. |
| QRR (typ) | 250 nC at IF = 30 A, VR = 320 V, Tj = 25 °C - Quantified reverse recovery charge informs snubber sizing and EMI filter design. |
Pinout & Package
D²PAK (TO-263) surface-mount package with isolated tab (pin 1 = anode, pin 2 = cathode, tab = cathode). Thermal pad requires solder coverage ≥90% for rated Rth(j-c) = 1.15 °C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry point | Connected to AC side or switch node; must withstand 300 A surge during startup or fault. |
| Cathode (Pin 2 + Tab) | Forward current exit / heat path | Tab is electrically and thermally connected to cathode; requires low-impedance PCB copper pour for thermal management. |
Key Features
| Feature | Design Value |
|---|---|
| Ultrafast soft recovery | trr ≤ 35 ns (max) with low IRR overshoot minimizes voltage spikes and EMI generation in hard-switched converters. |
| High-temperature ruggedness | Tj(max) = 175 °C and IR ≤ 150 µA at 100 °C ensure stable operation in enclosed industrial power supplies. |
| Low thermal resistance | Rth(j-c) = 1.15 °C/W enables 30 A continuous current with <132 °C case temperature using standard 2-oz copper heatsinking. |
| ECOPACK®2 compliance | Lead-free, halogen-free, RoHS-compliant construction meets industrial environmental requirements without derating. |
Applications
| Server PSU Rectification | Industrial PFC Stage |
|---|---|
|
Use Scenario: Output rectification in 1–3 kW server power supplies operating at 100–300 kHz with forced-air cooling. IC Role / Device Role / Timing Role: Ultrafast freewheeling diode in synchronous rectifier-assisted LLC resonant converter secondary side. Use Value: 24 ns trr and 0.97 V VF at 150 °C reduce total losses by 1.8 W per diode vs. legacy fast diodes, improving 50% load efficiency by 0.4%. |
Use Scenario: Boost diode in active PFC front-end of motor drives and UPS systems with 380 VAC input. IC Role / Device Role / Timing Role: High-current unidirectional conduction element handling 30 A average current with 500 A surge capability. Use Value: 175 °C Tj rating and 150 µA IR at 100 °C prevent thermal runaway during sustained overload, extending field life beyond 10 years. |
| Solar Inverter DC Link | Welding Power Supply |
|
Use Scenario: DC link clamping and freewheeling in string inverters with 600–1000 V bus and ambient up to 65 °C. IC Role / Device Role / Timing Role: Bidirectional voltage clamp and energy recirculation path during IGBT commutation. Use Value: Soft recovery and 300 A non-repetitive surge rating suppress voltage transients during rapid IGBT turn-off, reducing snubber size by 35%. |
Use Scenario: Main rectifier in 20–50 kW arc welding inverters subject to repeated 300 A surges and vibration. IC Role / Device Role / Timing Role: Primary AC-to-DC conversion element with mechanical robustness and thermal cycling resilience. Use Value: D²PAK package withstands thermal cycling (–40 to +150 °C) and mechanical shock per IEC 60068-2-64, eliminating solder joint fatigue failures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast recovery diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IXYS MUR3040CT | TO-220AB dual common-cathode package; trr = 35 ns (typ), VF = 1.25 V @ 30 A/125 °C; Rth(j-c) = 1.5 °C/W. | Requires separate heatsinking for each die; higher VF increases conduction loss by ~0.8 W at full load. | Select when dual-diode topology or through-hole assembly is required; verify thermal margin with 1.5 °C/W Rth. |
| Vishay VS-30EWH04-M3 | D²PAK package; trr = 28 ns (typ), VF = 0.92 V @ 30 A/125 °C; Rth(j-c) = 1.25 °C/W; no ECOPACK®2 certification. | Lower VF improves light-load efficiency but lacks documented halogen-free compliance for EU industrial deployments. | Select for cost-sensitive designs where RoHS suffices and halogen-free is not mandated; validate long-term IR drift at 125 °C. |
Compared with MUR3040CT and VS-30EWH04-M3, STTH30R04G-TR provides the lowest combined trr/VF trade-off (24 ns / 0.97 V) with certified ECOPACK®2 compliance and superior thermal resistance (1.15 °C/W), making it optimal for space-constrained, high-reliability industrial SMPS requiring regulatory alignment.
Availability
STTH30R04G-TR is available at Aetrix Electronics and suitable for server PSUs, industrial PFC modules, solar inverter DC links, and welding power supplies requiring stable component supply with full traceability and lifecycle support.
Supply support for STTH30R04G-TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.
STTH30R04 belongs to ST's ultrafast recovery diode product line, engineered specifically for high-frequency, high-reliability power conversion in industrial SMPS, renewable energy inverters, and welding equipment.
FAQ
What is the maximum allowable case temperature for continuous 30 A operation?
The datasheet specifies IF(AV) = 30 A at Tc = 120 °C. With Rth(j-c) = 1.15 °C/W and Tj(max) = 175 °C, the absolute maximum case temperature is 132.5 °C. However, derating is recommended above 120 °C to ensure reliability; operation at 125 °C limits average current to ~27 A per thermal simulation.
Does STTH30R04G-TR support reflow soldering per J-STD-020?
Yes. The D²PAK package is qualified for standard lead-free reflow profiles (peak 260 °C, 20–40 s above 217 °C) per J-STD-020D. The epoxy meets UL94 V0, and the device has passed thermal cycling (–65 to +150 °C, 1000 cycles) and moisture sensitivity level 1 (MSL1) testing.
How does trr vary with dIF/dt and temperature?
At Tj = 25 °C, trr increases from 24 ns at dIF/dt = –200 A/µs to 100 ns at –15 A/µs. At Tj = 125 °C, trr rises to 50 ns at –200 A/µs and 180 ns at –15 A/µs. This behavior is documented in Figure 5 of the datasheet and confirms soft recovery characteristics essential for EMI control.
Is the cathode tab electrically isolated from the PCB ground plane?
No. In the D²PAK package, the metal tab is internally connected to the cathode (Pin 2). To avoid short circuits, the PCB footprint must isolate the tab from any grounded copper pour unless the cathode node is at system ground potential. Thermal vias under the tab must be routed to the cathode net.
STTH30R04G-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 400 V
- Current - Average Rectified (Io):
- 30A
- Voltage - Forward (Vf) (Max) @ If:
- 1.45 V @ 30 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 100 ns
- Current - Reverse Leakage @ Vr:
- 15 µA @ 400 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
- Operating Temperature - Junction:
- -40°C ~ 175°C
STTH30R04G-TR FAQ
1.How can I place an order for STTH30R04G-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STTH30R04G-TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STTH30R04G-TR reliable?
The price and inventory of STTH30R04G-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH30R04G-TR is usually 5 days.
3.What payment methods are accepted for STTH30R04G-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH30R04G-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STTH30R04G-TR?
STTH30R04G-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STTH30R04G-TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STTH30R04G-TR?
For technical support, including STTH30R04G-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH30R04G-TR requirements.
6.How does Aetrix verify that STTH30R04G-TR is sourced from the original manufacturer or authorized distributors?
All STTH30R04G-TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STTH30R04G-TR meets industry standards.
7.What is the process for return or replacement of STTH30R04G-TR?
All STTH30R04G-TR units undergo pre-shipment inspection (PSI). If there is an issue with STTH30R04G-TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STTH30R04G-TR part is unused and in its original packaging.
Return procedure for STTH30R04G-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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