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Vishay Semiconductor Opto Division 300UR120A G BK G
- Part No.:
- 300UR120A G BK G
- Manufacturer:
- Vishay Semiconductor Opto Division
- Category:
- Single Diodes
- Package:
- DO-205AB, DO-9, Stud
- Datasheet:
-
300UR120A G BK G.pdf
- Description:
- DIODE GEN PURP 1.2KV 250A DO205
- Quantity:
- Payment:
- Shipping:
Inventory:6,367
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Product details
Overview
300UR120A G BK G from Infineon Technologies (formerly International Rectifier) is a stud-mount standard recovery power diode with 1200 V repetitive peak reverse voltage (VRRM), 250 A average forward current (IF(AV)) at 145 °C case temperature, and 6550 A non-repetitive surge current (IFSM) at 50 Hz. It features a diffused junction, DO-205AB (DO-9) glass-metal sealed package, and stud-anode polarity for high-power converter and traction applications.
For engineers reviewing the 300UR120A G BK G datasheet, 300UR120A G BK G pinout, 300UR120A G BK G application, or 300UR120A G BK G equivalent, key selection criteria include its 0.18 K/W junction-to-case thermal resistance, 1.30 V forward voltage drop at 785 A peak, 214 kA²s I²t rating at 10 ms, and compatibility with forced-air or liquid-cooled heatsinks in medium-voltage industrial drives.
Technical Context
This diode operates as a unidirectional, line-frequency rectifier in high-current AC/DC conversion stages. Its diffused PN junction enables robust surge handling up to 6850 A at 60 Hz and stable conduction across -40 °C to +200 °C junction temperature range, with thermal resistance degradation quantified per conduction angle (e.g., +0.020 K/W at 180°, +0.077 K/W at 30°).
The device uses a glass-metal sealed DO-205AB (DO-9) case with 3/4"-16UNF-2A stud anode terminal and flat base mounting. Mechanical specifications include 37 N·m maximum torque (non-lubricated threads), 250 g mass, and 0.08 K/W case-to-heatsink thermal resistance under greased, smooth interface conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1200 V - Maximum repetitive reverse blocking voltage; defines DC bus isolation capability in 600–800 VAC input systems. |
| IF(AV) | 250 A @ TC = 145 °C - Sustained DC or half-sine conduction limit; requires heatsink design supporting ≤145 °C case temp. |
| IFSM | 6550 A @ t = 10 ms, 50 Hz - Short-circuit withstand level; determines fuse coordination and protection circuit timing. |
| RthJC | 0.18 K/W - Junction-to-case thermal resistance under DC operation; sets minimum heatsink thermal resistance for safe TJ ≤ 200 °C. |
| VFM | 1.30 V @ Ipk = 785 A, TJ = 25 °C - Forward drop at rated surge; directly impacts conduction loss and thermal design margin. |
| I²t | 214 kA²s @ t = 10 ms, no voltage reapplied - Fusing energy threshold; used for coordination with fast-acting overcurrent protection. |
| TJ Range | -40 to +200 °C - Operational junction temperature window; supports use in harsh environments without derating below -40 °C. |
Pinout & Package
300UR120A G BK G uses the DO-205AB (DO-9) glass-metal sealed stud package with a single anode stud terminal (3/4"-16UNF-2A thread) and insulated cathode base plate. Mounting requires flat, smooth, greased surface contact for specified RthCS = 0.08 K/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode Stud | Forward current entry point | Mechanically integrated high-current terminal; must be electrically connected to positive AC/DC rail and thermally coupled to heatsink. |
| Cathode Base Plate | Forward current exit path | Insulated metal surface serving as cathode connection and primary heat transfer interface to heatsink. |
Key Features
| Feature | Design Value |
|---|---|
| Diffused junction technology | Enables uniform carrier distribution and high surge current tolerance (6850 A at 60 Hz) without localized hot-spot formation. |
| Stud-anode polarity (R suffix) | Places anode on threaded stud for direct high-side connection in bridge configurations, simplifying busbar routing and reducing parasitic inductance. |
| RoHS-compliant construction | Meets EU Directive 2011/65/EU; eliminates lead, cadmium, mercury, hexavalent chromium, PBB, and PBDE in all materials and plating. |
| Wide operating temperature range | Rated for continuous operation from -40 °C to +200 °C junction temperature, enabling deployment in oil-filled transformers and traction motor controllers. |
Applications
| Converter Systems | Industrial Power Supplies |
|---|---|
Use Scenario: Three-phase 400–690 VAC input rectification in regenerative drive front-ends. IC Role / Device Role / Timing Role: Main-line rectifier diode in six-pulse or twelve-pulse uncontrolled bridge configuration. Use Value: 250 A IF(AV) and 6550 A IFSM support high inertia load commutation and short-circuit ride-through per IEC 61800-5-1. |
Use Scenario: High-efficiency 30 kW industrial SMPS with phase-controlled input stage. IC Role / Device Role / Timing Role: Line-frequency output rectifier in dual-active-bridge isolated DC/DC stage. Use Value: 1.30 V VFM at 785 A minimizes conduction loss in high-current secondary winding circuits. |
| Machine Tool Controls | Medium Traction Applications |
Use Scenario: DC link supply for servo amplifier cabinets in CNC machining centers. IC Role / Device Role / Timing Role: Bulk rectifier feeding capacitor bank in multi-axis motion control power system. Use Value: 0.18 K/W RthJC enables compact heatsink integration within space-constrained cabinet enclosures. |
Use Scenario: Auxiliary power supply rectification in diesel-electric locomotive battery chargers. IC Role / Device Role / Timing Role: Input rectifier in 750 VDC auxiliary converter feeding 110 VDC control bus. Use Value: 1200 V VRRM provides 2× safety margin over nominal 600 VDC traction bus transients per EN 50155. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar standard recovery diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IXYS MDD300-12N1 | 1200 V VRRM, 300 A IF(AV), 0.15 K/W RthJC, TO-247AC package with isolated tab. | Higher current rating and lower thermal resistance, but requires PCB mount and separate heatsink interface. | Select when higher IF(AV) headroom and lower thermal impedance are prioritized over stud-mount mechanical integration. |
| Vishay VS-300UR12PBF | 1200 V VRRM, 250 A IF(AV), 0.19 K/W RthJC, identical DO-205AB stud-anode package and RoHS compliance. | Nearly identical electrical and mechanical specs; minor VFM variation (1.32 V vs. 1.30 V) and different torque spec (35 N·m). | Drop-in alternative where Infineon sourcing is constrained; verify torque and thermal interface grease compatibility per application environment. |
Compared with IXYS MDD300-12N1 and Vishay VS-300UR12PBF, the 300UR120A G BK G offers optimized stud-anode mechanical integration for bolted busbar connections, precise 0.18 K/W thermal resistance calibration, and proven field reliability in high-vibration traction environments-making it preferred for retrofit and legacy system continuity.
Availability
300UR120A G BK G is available at Aetrix Electronics and suitable for converter systems, industrial power supplies, machine tool controls, and medium traction applications requiring stable component supply, long-term lifecycle support, and traceable industrial-grade sourcing.
Supply support for 300UR120A G BK G 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
Infineon Technologies AG is a German semiconductor manufacturer specializing in power electronics, automotive ICs, and industrial control solutions, with global R&D and manufacturing infrastructure.
The 300UR120A G BK G belongs to Infineon's 70/300U(R)..D series of high-power standard recovery diodes, engineered for ruggedized line-frequency rectification in industrial drives, traction converters, and heavy-duty power supplies.
FAQ
What is the maximum allowable case temperature for continuous operation of the 300UR120A G BK G?
The 300UR120A G BK G supports a maximum average forward current of 250 A at a case temperature (TC) of 145 °C, as defined in its major ratings table. Operation above this temperature requires proportional current derating per the conduction-angle derating curves in Bulletin I2031. Exceeding 145 °C case temperature without adjustment risks exceeding the 200 °C maximum junction temperature and premature failure.
Does the 300UR120A G BK G have a specified forward voltage drop at rated current?
Yes-the 300UR120A G BK G specifies a maximum forward voltage drop (VFM) of 1.30 V at 785 A peak forward current, 25 °C junction temperature, and 10 ms sinusoidal pulse duration. This value is measured under controlled transient conditions and serves as a key parameter for conduction loss calculation in thermal modeling of the 300UR120A G BK G.
What does the "R" in the 300UR120A G BK G part number indicate?
The "R" in 300UR120A G BK G denotes stud-reverse polarity: the anode is connected to the threaded stud, while the cathode is isolated on the base plate. This configuration enables direct high-side connection in bridge rectifiers and simplifies high-current busbar integration-distinct from standard "U" versions where the cathode is on the stud.
Is the 300UR120A G BK G compliant with RoHS and REACH regulations?
Yes-the 300UR120A G BK G is explicitly marked RoHS compliant in Bulletin I2031 rev. B, confirming full adherence to Directive 2011/65/EU. It contains no lead, cadmium, mercury, hexavalent chromium, PBB, or PBDE, and its materials declaration meets REACH SVHC screening requirements per Infineon's published compliance documentation.
What is the thermal resistance from junction to case (RthJC) for the 300UR120A G BK G under DC operation?
The 300UR120A G BK G has a maximum junction-to-case thermal resistance (RthJC) of 0.18 K/W under DC conduction, as stated in the Thermal and Mechanical Specifications section of Bulletin I2031. This value assumes proper mounting torque (37 N·m, non-lubricated) and a greased, flat, smooth heatsink interface per the datasheet's RthCS specification.
300UR120A G BK G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Semiconductor Opto Division
- Series:
- -
- Package/Case:
- DO-205AB, DO-9, Stud
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1200 V
- Current - Average Rectified (Io):
- 250A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 785 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- -
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis, Stud Mount
- Supplier Device Package:
- DO-205AB (DO-9)
- Operating Temperature - Junction:
- -40°C ~ 200°C
300UR120A G BK G FAQ
1.How can I place an order for 300UR120A G BK G through Aetrix?
Please submit a Request for Quotation (RFQ) for 300UR120A G BK G 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 300UR120A G BK G reliable?
The price and inventory of 300UR120A G BK G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 300UR120A G BK G is usually 5 days.
3.What payment methods are accepted for 300UR120A G BK G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 300UR120A G BK G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 300UR120A G BK G?
300UR120A G BK G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 300UR120A G BK G 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 300UR120A G BK G?
For technical support, including 300UR120A G BK G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 300UR120A G BK G requirements.
6.How does Aetrix verify that 300UR120A G BK G is sourced from the original manufacturer or authorized distributors?
All 300UR120A G BK G 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 300UR120A G BK G meets industry standards.
7.What is the process for return or replacement of 300UR120A G BK G?
All 300UR120A G BK G units undergo pre-shipment inspection (PSI). If there is an issue with 300UR120A G BK G, 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 300UR120A G BK G part is unused and in its original packaging.
Return procedure for 300UR120A G BK G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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