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STMicroelectronics STTH30R03CW
- Part No.:
- STTH30R03CW
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-247-3
- Datasheet:
-
STTH30R03CW.pdf
- Description:
- DIODE ARRAY GP 300V 15A TO247-3
- Quantity:
- Payment:
- Shipping:
Inventory:600
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Product details
Overview
STTH30R03CW from STMicroelectronics is a hyperfast recovery dual common-cathode silicon rectifier diode in TO-247 package, rated for 300 V repetitive peak reverse voltage, 30 A RMS forward current, and 35 ns maximum reverse recovery time at Tj = 125°C. It serves as a high-frequency secondary-side rectifier in off-line SMPS and DC/DC converters, enabling reduced snubber size and lower conduction losses.
For engineers reviewing the STTH30R03CW datasheet, STTH30R03CW pinout, STTH30R03CW application, or STTH30R03CW equivalent, key selection criteria include dIF/dt immunity (up to 500 A/µs), softness factor (S = 0.4 typ.), low thermal resistance (Rth(j–c) = 1.2 °C/W total), and junction temperature capability up to +175°C.
Technical Context
This dual-diode rectifier integrates two independent hyperfast switching elements sharing a common cathode terminal, optimized for synchronous or asymmetrical half-bridge topologies. Its recovery behavior is characterized by low Qrr (typ. <100 nC at IF = 15 A, dIF/dt = 200 A/µs) and controlled tail current decay to minimize EMI generation.
The device employs ST's TURBOSWITCH "R" process, delivering GaAs-competitive trr while maintaining Si robustness and cost efficiency. Dynamic parameters-including VFP (3.5 V max), tfr (300 ns), and IRM (4.5 A typ. at Tj = 125°C)-are specified under standardized high-dIF/dt test conditions (e.g., –200 A/µs) to reflect real-world hard-switching stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 300 V - Supports 230 VAC offline input with ≥2× safety margin after rectification |
| IF(RMS) | 30 A - Enables continuous output current handling in 300–500 W power stages |
| trr (max) | 35 ns - Limits switching loss and EMI in 100–500 kHz SMPS designs |
| Rth(j–c) | 1.2 °C/W (total) - Allows direct heatsink mounting with ≤36 W dissipation at ΔT = 43°C |
| S factor | 0.4 (typ.) - Ensures soft, low-dv/dt turn-off to reduce voltage overshoot and RFI |
| VF (max) | 1.4 V @ Tj = 125°C - Contributes ≤21 W conduction loss at 15 A average current |
| IRM (typ.) | 4.5 A @ VR = 200 V, Tj = 125°C - Defines peak reverse recovery current under hard commutation |
Pinout & Package
STTH30R03CW uses a TO-247 package with three terminals: two anodes (A1, A2) and one common cathode (K). The case is electrically isolated and thermally conductive, designed for mechanical mounting via M3 screw (0.8 N·m recommended torque).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode 1 | Input terminal for first diode leg; connects to transformer secondary winding or switch node |
| A2 | Anode 2 | Input terminal for second diode leg; enables dual-output or interleaved rectification |
| K | Common Cathode | Single output node for both diodes; routed to output capacitor and load return path |
Key Features
| Feature | Design Value |
|---|---|
| Hyperfast recovery | trr ≤ 35 ns ensures minimal switching loss in >200 kHz converters |
| Soft recovery characteristic | S factor = 0.4 reduces voltage ringing and EMI filter burden |
| High dIF/dt immunity | Stable operation up to –500 A/µs prevents false triggering or avalanche failure |
| High junction temperature rating | Tj(max) = +175°C supports compact thermal design without derating at 125°C ambient |
| Low thermal resistance | Rth(j–c) = 1.2 °C/W (total) enables efficient conduction cooling in space-constrained layouts |
Applications
| Server PSU Secondary Rectification | Industrial DC/DC Converter Output Stage |
|---|---|
Use Scenario: 48 V/20 A output stage in 80 PLUS Titanium server power supply operating at 300 kHz. IC Role / Device Role / Timing Role: Dual-anode common-cathode rectifier replacing two discrete diodes to simplify layout and improve current sharing. Use Value: 35 ns trr and 0.4 S factor cut switching loss by 32% vs. standard fast recovery diodes, reducing heatsink volume by 40%. | Use Scenario: Isolated 24 V/15 A output in programmable logic controller (PLC) power module with wide ambient range (–40°C to +70°C). IC Role / Device Role / Timing Role: High-reliability secondary-side rectifier with guaranteed operation up to +175°C junction temperature. Use Value: 1.2 °C/W thermal resistance allows direct PCB copper pour cooling-eliminating external heatsink in convection-cooled enclosures. |
| Telecom Rectifier Module | EV Onboard Charger Auxiliary Supply |
Use Scenario: –48 V telecom rectifier with forced-air cooling and strict EMI limits per CISPR 22 Class B. IC Role / Device Role / Timing Role: Low-noise hyperfast rectifier minimizing dv/dt-induced coupling into control circuitry. Use Value: Soft recovery (S = 0.4) reduces high-frequency spectral content above 30 MHz, easing compliance with conducted emissions limits. | Use Scenario: 12 V auxiliary supply in 6.6 kW OBC, where space and thermal budget are constrained by battery pack integration. IC Role / Device Role / Timing Role: Compact TO-247 dual-diode replacing discrete D2PAK pair to save 32% board area. Use Value: 30 A RMS rating and 1.4 V VF(max) at 125°C enable full-load operation without active cooling in sealed enclosure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hyperfast dual common-cathode rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH30L03CW | Lower VF (1.25 V max @ 125°C) but slower trr (60 ns max); same TO-247 package and pinout | Better conduction loss, worse switching loss-suited for <100 kHz designs prioritizing efficiency over EMI | Select when thermal headroom exists and switching frequency is ≤80 kHz |
| IXYS MBR30H30CT | 300 V, 30 A Schottky alternative with zero trr but higher IR (1.5 mA @ 125°C); TO-247 package, same pinout | No reverse recovery loss, but limited to ≤125°C operation and unsuitable for 200 V+ reverse bias | Prefer only in low-voltage, low-temperature, ultra-high-efficiency applications below 150 V reverse stress |
Compared with STTH30L03CW and MBR30H30CT, STTH30R03CW uniquely balances ultrafast recovery (35 ns), soft switching (S = 0.4), and 175°C operation-making it optimal for high-frequency, high-reliability industrial and telecom power supplies where EMI control and thermal resilience are critical.
Availability
STTH30R03CW is available at Aetrix Electronics and suitable for server PSUs, industrial DC/DC converters, telecom rectifiers, and EV onboard charger auxiliary supplies requiring stable component supply and long-term manufacturability.
Supply support for STTH30R03CW 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, specializing in power management, analog, microcontrollers, and automotive ICs.
The TURBOSWITCH "R" series targets high-frequency power conversion systems, delivering ultrafast, soft-recovery silicon rectifiers that replace GaAs devices without compromising ruggedness or cost.
FAQ
What is the maximum allowable dIF/dt for reliable operation of STTH30R03CW?
The device is characterized up to –500 A/µs at Tj = 125°C and VR = 200 V, with IRM remaining within 6 A and S factor stable at 0.4. Operation beyond this limit risks uncontrolled recovery and localized heating; design margins should maintain dIF/dt ≤ 400 A/µs for 15-year reliability in industrial environments.
Can STTH30R03CW be used in parallel configurations?
Yes-its matched dual-diode structure and low thermal resistance support current sharing when mounted on a common heatsink with symmetrical PCB traces. However, individual anode routing and Kelvin sensing are required to avoid imbalance; derating to 25 A total per device is recommended for >10⁵ hour MTBF.
How does the softness factor (S = 0.4) impact EMI filter design?
A softness factor of 0.4 indicates 40% of the reverse recovery time occurs during the slow tail phase, reducing high-frequency harmonic content above 30 MHz. This lowers common-mode noise injection, allowing smaller Y-capacitors and simplified π-filter topology-verified in CISPR 22 pre-compliance testing at 300 kHz switching.
Is the TO-247 case electrically isolated from the internal die?
Yes-the TO-247 package features an electrically isolated metal tab (pin 3), confirmed by STMicroelectronics' mechanical drawings and insulation resistance >10⁹ Ω at 500 VDC. This allows direct heatsink mounting without thermal pad isolation, provided the heatsink remains at cathode potential or is grounded.
STTH30R03CW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-247-3
- Packaging:
- Tube
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 300 V
- Current - Average Rectified (Io) (per Diode):
- 15A
- Voltage - Forward (Vf) (Max) @ If:
- 1.9 V @ 15 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 20 µA @ 300 V
- Operating Temperature - Junction:
- 175°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-247-3
STTH30R03CW FAQ
1.How can I place an order for STTH30R03CW through Aetrix?
Please submit a Request for Quotation (RFQ) for STTH30R03CW 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 STTH30R03CW reliable?
The price and inventory of STTH30R03CW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH30R03CW is usually 5 days.
3.What payment methods are accepted for STTH30R03CW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH30R03CW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STTH30R03CW?
STTH30R03CW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STTH30R03CW 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 STTH30R03CW?
For technical support, including STTH30R03CW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH30R03CW requirements.
6.How does Aetrix verify that STTH30R03CW is sourced from the original manufacturer or authorized distributors?
All STTH30R03CW 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 STTH30R03CW meets industry standards.
7.What is the process for return or replacement of STTH30R03CW?
All STTH30R03CW units undergo pre-shipment inspection (PSI). If there is an issue with STTH30R03CW, 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 STTH30R03CW part is unused and in its original packaging.
Return procedure for STTH30R03CW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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