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STMicroelectronics BYT30P-400
- Part No.:
- BYT30P-400
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- SOD-93-2
- Datasheet:
-
BYT30P-400.pdf
- Description:
- DIODE GEN PURP 400V 30A SOD93-2
- Quantity:
- Payment:
- Shipping:
Inventory:6,323
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Product details
Overview
BYT30P-400 from STMicroelectronics is a fast recovery rectifier diode in SOD93 plastic package, rated for 400 V repetitive peak reverse voltage, 30 A average forward current at Tc = 100°C, and ultra-fast 50 ns typical reverse recovery time (trr) at Tj = 100°C with IF = 0.5 A. It serves as a freewheeling diode in high-frequency DC-DC converters and motor control inverters where low switching losses and low noise turn-off are critical.
For engineers reviewing the BYT30P-400 datasheet, BYT30P-400 pinout, BYT30P-400 application, or BYT30P-400 equivalent, key selection criteria include verified trr ≤ 100 ns, junction-to-case thermal resistance of 1 °C/W, cathode-connected-to-case mechanical mounting, and compatibility with high-diF/dt (up to −240 A/µs) switching waveforms in hard-switched topologies.
Technical Context
This diode employs optimized lifetime-controlled silicon to achieve fast, soft reverse recovery with low peak reverse current (IRM = 9–12 A) and minimal recovery charge-critical for reducing EMI and snubber stress in SMPS and IGBT-based motor drives. Its SOD93 package features direct case conduction cooling and a cathode terminal electrically tied to the metal tab.
The device operates across −40°C to +150°C junction temperature range and supports surge currents up to 350 A (10 ms, sinusoidal), enabling robust operation during transient overloads in industrial power stages without derating beyond datasheet limits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum repetitive blocking voltage in rectifier or freewheeling position without avalanche breakdown |
| IF(AV) | 30 A at Tc = 100°C - Continuous DC forward current sustainable with heatsink-mounted case temperature control |
| trr | 50 ns typ. (Tj = 100°C, IF = 0.5 A, diF/dt = −120 A/µs) - Enables >100 kHz switching in hard-switched converters |
| Rth(j–c) | 1 °C/W - Confirmed thermal path from junction to case enables precise heatsink sizing for 50 W dissipation limit |
| IRM | 9 A (diF/dt = −120 A/µs) - Peak reverse recovery current directly impacts snubber loss and IGBT tail-current interaction |
| VF | 1.4 V at Tj = 100°C, IF = 30 A - Forward drop determines conduction loss in high-current freewheeling paths |
Pinout & Package
SOD93 is a stud-mount plastic package with isolated anode lead and cathode electrically connected to the metal case (tab). Mounting torque must not exceed 100 cm·N to avoid die fracture.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (lead) | Forward current entry point | Isolated terminal for PCB trace or busbar connection; no thermal or electrical tie to case |
| Cathode (case/tab) | Forward current exit & heat sink interface | Electrically active and thermally conductive surface-must be insulated from chassis unless circuit ground reference permits |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast recovery | trr = 50 ns typ. at 100°C enables efficient operation in 50–200 kHz SMPS and servo drive output stages |
| Low noise turn-off | Soft recovery waveform (low Irr, low diR/dt) reduces EMI generation and gate-drive coupling in adjacent IGBTs/MOSFETs |
| Cathode-to-case conduction | Direct thermal path (Rth(j–c) = 1 °C/W) allows compact heatsinking without additional thermal interface layers |
| High surge capability | 350 A non-repetitive surge rating supports motor startup transients and short-circuit fault conditions in industrial inverters |
Applications
| Industrial Motor Drives | Switch-Mode Power Supplies |
|---|---|
Use Scenario: Bidirectional energy regeneration in 3-phase IGBT inverter outputs during braking. IC Role / Device Role / Timing Role: Freewheeling diode clamping inverter leg during dead-time and regenerative conduction. Use Value: 50 ns trr minimizes voltage overshoot and reduces snubber component size by limiting di/dt-induced ringing. | Use Scenario: Output rectification in 1–3 kW telecom or server PSUs operating at 100–200 kHz. IC Role / Device Role / Timing Role: Secondary-side fast recovery rectifier replacing Schottky diodes where higher VRRM is required. Use Value: 400 V VRRM and 1.4 V VF at 30 A enable higher efficiency than standard PN diodes while avoiding Schottky leakage limitations. |
| Uninterruptible Power Systems | Welding Inverters |
Use Scenario: DC-link freewheeling during battery backup mode transitions in double-conversion UPS. IC Role / Device Role / Timing Role: High-current path for inductive energy return during AC input interruption. Use Value: 350 A IFSM rating ensures survival during sudden load dumps without thermal runaway. | Use Scenario: Primary-side rectification in resonant DC-link welder inverters with rapid polarity reversal. IC Role / Device Role / Timing Role: Main rectifier handling pulsed 100–500 A currents at 1–10 kHz burst frequencies. Use Value: Low Rth(j–c) and cathode-to-case mounting allow direct bolt-down to water-cooled heatsinks for sustained 30 A average current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH30L04 | Lower VF (1.25 V @ 30 A, 100°C), same VRRM (400 V), slightly slower trr (65 ns typ.) | Better conduction efficiency but marginally higher switching loss in >150 kHz designs | Preferred when thermal budget dominates over EMI constraints |
| IXYS MUR3040CT | Dual common-cathode TO-247 package, 400 V VRRM, 30 A IF(AV), trr = 60 ns | Offers dual-diode integration for full-wave bridge; requires different footprint and layout | Select when board space allows dual configuration and shared cathode simplifies routing |
Compared with STTH30L04 and MUR3040CT, BYT30P-400 delivers the fastest verified recovery (50 ns) and lowest thermal resistance (1 °C/W) in a single-diode stud-mount form, making it optimal for space-constrained, high-diF/dt freewheeling roles where EMI and thermal density are co-critical.
Availability
BYT30P-400 is available at Aetrix Electronics and suitable for industrial motor control, uninterruptible power systems, and welding inverter designs requiring stable component supply and long-term BOM continuity despite its obsolete status per ST's documentation.
Supply support for BYT30P-400 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, designing and manufacturing analog, power, MCU, and sensor solutions for industrial, automotive, and consumer markets.
BYT30P-400 belongs to ST's legacy high-power fast recovery diode product line, engineered specifically for high-efficiency, high-reliability power conversion in ruggedized industrial equipment.
FAQ
Is BYT30P-400 still in active production?
No-STMicroelectronics has marked BYT30P-400 as obsolete per its October 1999 datasheet revision. However, Aetrix Electronics maintains legacy inventory with full traceability and offers lifecycle support including cross-reference guidance and engineering validation for drop-in replacements.
What is the maximum recommended mounting torque for the SOD93 case?
The datasheet specifies a maximum torque value of 100 cm·N for the SOD93 package. Exceeding this risks mechanical damage to the internal die bond or case seal. The recommended torque is 80 cm·N for reliable thermal contact without overstress.
Can BYT30P-400 replace a Schottky diode in a 48 V output rectifier?
Only if reverse voltage requirements exceed 40 V and thermal design accommodates higher VF (1.4 V vs. typical Schottky 0.5 V). BYT30P-400's 400 V VRRM and 50 ns trr make it suitable for higher-voltage, higher-temperature rectification-but conduction loss will be significantly higher than Schottky alternatives below 100 V.
Does the cathode-to-case connection require electrical isolation from the heatsink?
Yes-unless the circuit design intentionally references the cathode to system ground or chassis, the metal case must be electrically isolated using mica washers or ceramic pads. Failure to isolate may cause short circuits or ground loops in floating or multi-rail systems.
BYT30P-400 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- SOD-93-2
- Packaging:
- Tube
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 400 V
- Current - Average Rectified (Io):
- 30A
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 30 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 100 ns
- Current - Reverse Leakage @ Vr:
- 35 µA @ 400 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- SOD-93-2
- Operating Temperature - Junction:
- -40°C ~ 150°C
BYT30P-400 FAQ
1.How can I place an order for BYT30P-400 through Aetrix?
Please submit a Request for Quotation (RFQ) for BYT30P-400 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 BYT30P-400 reliable?
The price and inventory of BYT30P-400 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BYT30P-400 is usually 5 days.
3.What payment methods are accepted for BYT30P-400?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BYT30P-400 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BYT30P-400?
BYT30P-400 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BYT30P-400 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 BYT30P-400?
For technical support, including BYT30P-400 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BYT30P-400 requirements.
6.How does Aetrix verify that BYT30P-400 is sourced from the original manufacturer or authorized distributors?
All BYT30P-400 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 BYT30P-400 meets industry standards.
7.What is the process for return or replacement of BYT30P-400?
All BYT30P-400 units undergo pre-shipment inspection (PSI). If there is an issue with BYT30P-400, 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 BYT30P-400 part is unused and in its original packaging.
Return procedure for BYT30P-400:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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