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STMicroelectronics STTH30R03CG
- Part No.:
- STTH30R03CG
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
STTH30R03CG.pdf
- Description:
- DIODE ARRAY GP 300V 15A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:2,705
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Product details
Overview
STTH30R03CG from STMicroelectronics is a hyperfast recovery silicon rectifier diode in D2PAK package, rated for 300 V repetitive peak reverse voltage, 30 A RMS forward current, and 35 ns maximum reverse recovery time at Tj = 25°C with dIF/dt = −50 A/µs. It serves as a secondary-side high-frequency rectifier in off-line SMPS and DC/DC converters, enabling reduced snubber size and lower conduction losses.
For engineers reviewing the STTH30R03CG datasheet, STTH30R03CG pinout, STTH30R03CG application, or STTH30R03CG equivalent, key selection criteria include soft recovery behavior (S factor = 0.4), low junction-to-case thermal resistance (1.2 °C/W total), 175 °C max operating junction temperature, and dynamic performance under high dIF/dt conditions.
Technical Context
This diode belongs to ST's TURBOSWITCH "R" family, engineered specifically for ultra-fast switching in hard-switched topologies where MOSFET body diode stress must be minimized. Its hyperfast recovery (trr ≤ 35 ns) and low stored charge (Qrr typ. < 40 nC at IF = 15 A) reduce switching losses and EMI generation during turn-off.
The device exhibits soft reverse recovery (S factor = 0.4), meaning the reverse current decay is gradual rather than abrupt-critical for reducing voltage overshoot and RFI in high-dI/dt circuits. Thermal design is supported by a low total Rth(j–c) of 1.2 °C/W, enabling high-power operation with conductive cooling only.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 300 V - Withstands up to 300 V reverse bias without breakdown, suitable for 230 VAC-derived 400 V bus designs. |
| IF(RMS) | 30 A - Supports continuous RMS current handling in high-duty-cycle rectification paths. |
| trr (max) | 35 ns - Enables operation at >100 kHz switching frequencies with minimal recovery loss. |
| S factor | 0.4 - Soft recovery reduces voltage ringing and EMI, easing filter design in compact converters. |
| Rth(j–c) | 1.2 °C/W (total) - Allows direct heatsink mounting with predictable thermal rise under full load. |
| Tj (max) | +175 °C - Permits high ambient or thermally constrained PCB layouts without derating. |
| VF (max) | 1.4 V @ Tj = 125°C - Low forward drop minimizes conduction loss at elevated temperatures. |
Pinout & Package
D2PAK (TO-263) surface-mount package with three terminals: Anode 1 (A1), Cathode (K), and Anode 2 (A2). The dual-anode configuration supports parallel internal die structure for enhanced current sharing and thermal symmetry.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode (Die 1) | Primary anode connection for one internal die; used in single-diode or interleaved configurations. |
| K | Cathode (common) | Shared cathode terminal for both internal dies; provides low-inductance return path. |
| A2 | Anode (Die 2) | Second anode connection enabling dual-die paralleling without external busbar. |
Key Features
| Feature | Design Value |
|---|---|
| Hyperfast recovery | trr ≤ 35 ns enables >100 kHz operation while limiting switching loss and EMI. |
| Soft recovery (S = 0.4) | Gradual reverse current decay suppresses voltage spikes and simplifies snubber design. |
| Dual-anode D2PAK | Internal paralleled dies improve current distribution and thermal balance vs. single-die equivalents. |
| 175 °C junction rating | Supports high-temperature environments without forced air or oversized heatsinks. |
Applications
| Server PSU Secondary Rectification | Industrial DC/DC Converter Output Stage |
|---|---|
Use Scenario: High-efficiency 48 V output stage in 1U server power supplies operating at 100–200 kHz. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacement; handles 30 A RMS output current with minimal voltage overshoot. Use Value: 35 ns trr and soft recovery reduce output filter capacitor stress and eliminate need for RC snubbers. | Use Scenario: Isolated 24 V output in industrial programmable logic controller (PLC) power modules. IC Role / Device Role / Timing Role: High-reliability freewheeling and rectification element in flyback and forward converters. Use Value: 175 °C Tj rating ensures stable operation in sealed enclosures with ambient up to 85 °C. |
| Telecom Brick Power Supply | EV On-Board Charger Auxiliary Rail |
Use Scenario: +12 V auxiliary rail in telecom half-brick DC/DC modules with strict EMI limits. IC Role / Device Role / Timing Role: Fast-recovery rectifier in active clamp forward topology. Use Value: S factor = 0.4 cuts radiated emissions by >6 dBµV compared to standard fast diodes. | Use Scenario: +5 V/3.3 V bias supply rectification in EV on-board charger control boards. IC Role / Device Role / Timing Role: High-temp secondary rectifier exposed to under-hood thermal cycling. Use Value: Dual-anode D2PAK layout improves thermal cycling reliability over TO-220 alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hyperfast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH30L03CG | Lower VF (1.25 V typ. @ 15 A, 125°C) but slower trr (50 ns max); same D2PAK package. | Better conduction efficiency at light loads; less suitable for >150 kHz topologies. | Select when thermal budget dominates over switching frequency constraints. |
| IXYS MBR30H30CTG | Schottky construction; zero reverse recovery but limited to 30 V VRRM and 150 °C Tj. | Not usable in 300 V bus applications; requires redesign of input stage and snubber. | Only viable in low-voltage (<48 V) DC/DC outputs where trr is irrelevant. |
Compared with STTH30L03CG, STTH30R03CG trades ~0.15 V higher VF for 15 ns faster trr and superior EMI performance; versus MBR30H30CTG, it enables 300 V systems but lacks Schottky's zero-Qrr advantage.
Availability
STTH30R03CG is available at Aetrix Electronics and suitable for server power supplies, industrial DC/DC converters, and telecom brick applications requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for STTH30R03CG 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.
This device belongs to the TURBOSWITCH "R" family-engineered for high-frequency, high-dI/dt rectification in switched-mode power supplies where MOSFET body diode stress and EMI must be minimized.
FAQ
What is the maximum recommended mounting torque for the STTH30R03CG D2PAK package?
The D2PAK package uses a single central mounting tab. STMicroelectronics specifies a recommended torque value of 0.8 N·m and a maximum of 1.0 N·m for the mounting screw. Exceeding this may deform the leadframe or compromise thermal interface integrity, especially under thermal cycling.
Does STTH30R03CG support parallel operation with other diodes?
Yes-the dual-anode (A1/A2) and common-cathode (K) configuration allows intrinsic current sharing between two internal dies. For external paralleling, use matched devices with identical VF and trr, plus symmetrical PCB layout and Kelvin sensing to avoid thermal runaway.
How does the S factor of 0.4 impact circuit design?
An S factor of 0.4 indicates moderate softness: reverse current decays gradually over ~60% of trr duration. This reduces dv/dt-induced voltage overshoot and lowers RFI, permitting smaller EMI filters and relaxed layout spacing near high-dI/dt nodes.
Can STTH30R03CG replace a standard FR307 in a 100 kHz flyback converter?
No-FR307 is a 1000 V, 3 A slow-recovery diode (trr ≈ 500 ns). STTH30R03CG has lower VRRM (300 V) and higher current rating (30 A), but its hyperfast recovery requires careful gate drive and snubber tuning. Direct replacement risks overvoltage failure unless circuit is re-optimized for fast switching.
STTH30R03CG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- Surface Mount
- Supplier Device Package:
- D2PAK
STTH30R03CG FAQ
1.How can I place an order for STTH30R03CG through Aetrix?
Please submit a Request for Quotation (RFQ) for STTH30R03CG 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 STTH30R03CG reliable?
The price and inventory of STTH30R03CG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH30R03CG is usually 5 days.
3.What payment methods are accepted for STTH30R03CG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH30R03CG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STTH30R03CG?
STTH30R03CG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STTH30R03CG 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 STTH30R03CG?
For technical support, including STTH30R03CG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH30R03CG requirements.
6.How does Aetrix verify that STTH30R03CG is sourced from the original manufacturer or authorized distributors?
All STTH30R03CG 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 STTH30R03CG meets industry standards.
7.What is the process for return or replacement of STTH30R03CG?
All STTH30R03CG units undergo pre-shipment inspection (PSI). If there is an issue with STTH30R03CG, 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 STTH30R03CG part is unused and in its original packaging.
Return procedure for STTH30R03CG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STTH30R03CG Tags
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BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
Diodes Incorporated
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BAV99,215
Nexperia USA Inc.
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Diodes Incorporated
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Nexperia USA Inc.
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BAS40-04LT1G
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MMBD1503-TP
Micro Commercial Co
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