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STMicroelectronics STBR3012WY
- Part No.:
- STBR3012WY
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- DO-247-2 (Straight Leads)
- Datasheet:
-
STBR3012WY.pdf
- Description:
- DIODE GEN PURP 1.2KV 30A DO247
- Quantity:
- Payment:
- Shipping:
Inventory:146
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Product details
Overview
STBR3012WY from STMicroelectronics is an AEC-Q101-qualified automotive high-voltage silicon rectifier diode in DO-247 package, rated for 30 A average forward current, 1200 V repetitive peak reverse voltage, and 175 °C maximum junction temperature. It serves as a rugged input bridge diode in on-board chargers, delivering ultra-low conduction losses (VF typ. 0.95 V at 150 °C) and guaranteed VRRM across -40 to +175 °C.
For engineers reviewing the STBR3012WY datasheet, STBR3012WY pinout, STBR3012WY application, or STBR3012WY equivalent, key selection criteria include its 5.38 mm minimum creepage distance (anode–cathode, with top coating), 0.45 °C/W junction-to-case thermal resistance, and PPAP capability for automotive production systems.
Technical Context
This device is a single high-voltage, high-current, planar passivated silicon rectifier optimized for unidirectional AC-to-DC conversion in harsh automotive environments. Its design ensures stable reverse leakage (<100 µA at 150 °C, VR = VRRM) and low forward voltage drop across wide temperature and load ranges.
The DO-247 package provides mechanical robustness and enhanced creepage (5.38 mm anode–cathode with top coating), meeting IEC 60664-1 requirements for reinforced insulation in high-voltage battery charging circuits. Thermal performance is characterized by Rth(j-c) = 0.45 °C/W, enabling efficient heat transfer to heatsinks under continuous 30 A operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF(AV) | 30 A - supports continuous DC output current in 11–22 kW on-board charger front-end bridges |
| VRRM | 1200 V - withstands peak line voltages in 800 V nominal EV battery systems with margin |
| VF (typ.) | 0.95 V @ 30 A, 150 °C - enables <1.5 W conduction loss per diode at rated current |
| Tj max | +175 °C - allows operation in engine bay or power module enclosures without derating |
| Rth(j-c) | 0.45 °C/W - permits direct mounting to aluminum heatsink with ≤13.5 W dissipation before exceeding Tj limit |
| IR (max) | 100 µA @ 150 °C, VR = VRRM - ensures minimal leakage-induced power loss in high-temperature standby modes |
| CdA-K | 5.38 mm (with top coating) - satisfies reinforced insulation requirements for 1200 V working voltage per IEC 60664-1 |
Pinout & Package
STBR3012WY uses the DO-247 package: a through-hole, high-power, epoxy-molded outline with isolated anode/cathode terminals and M3 screw-mounting capability (recommended torque: 0.8 N·m). The package features UL94 V0-rated epoxy and 4.4 g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | AC input terminal (positive half-cycle conduction path) | Connected to AC line side of bridge; carries full IF(AV) during conduction; requires creepage isolation ≥5.38 mm to cathode |
| Cathode (K) | DC output terminal (common cathode node in full-wave bridge) | Connected to positive DC bus; must be thermally coupled to heatsink via metal tab; electrically isolated from mounting surface |
| Case / Tab | Electrically isolated thermal interface | Non-conductive mounting surface; transfers heat only; no electrical connection to either terminal |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Ultra-low conduction losses | VF = 0.95 V typ. @ 30 A/150 °C reduces thermal load vs. standard fast recovery diodes by >25% |
| Guaranteed VRRM over full temperature range | 1200 V rating maintained from -40 to +175 °C - eliminates derating in cold-start or hot-soak conditions |
| PPAP capability | Full Production Part Approval Process documentation available for Tier-1 OEM integration into OBC BOMs |
| ECOPACK®2 compliance | Lead-free, halogen-free, RoHS-compliant packaging meeting automotive environmental standards |
Applications
| On-Board Charger (OBC) Input Bridge | High-Voltage DC Link Protection |
|---|---|
Use Scenario: Rectifying 3-phase AC grid input (up to 400 VAC RMS) into DC for bidirectional OBC power stages. IC Role / Device Role / Timing Role: High-current, high-voltage rectifier in full-wave bridge configuration; conducts during positive half-cycles of each phase. Use Value: Enables 98.5%+ rectifier efficiency at 30 A due to 0.95 V VF and low Rth(j-c), reducing heatsink size by 30% vs. legacy 1000 V diodes. | Use Scenario: Reverse-polarity and surge protection in 800 V battery DC link between traction inverter and energy storage system. IC Role / Device Role / Timing Role: Unidirectional blocking element placed in series with main DC bus to prevent backfeed and absorb transient reverse energy. Use Value: Withstands 1600 V non-repetitive surge (VRSM) and maintains <100 µA leakage at 150 °C, ensuring fail-safe isolation during fault events. |
| Industrial Battery Charging Systems | Renewable Energy Grid-Tie Converters |
Use Scenario: High-efficiency AC/DC conversion in depot-level EV charging cabinets operating continuously at ambient up to 60 °C. IC Role / Device Role / Timing Role: Primary rectification stage in multi-kW switched-mode power supplies feeding isolated DC/DC converters. Use Value: +175 °C Tj rating allows full 30 A output without derating in enclosed cabinets; DO-247 mechanical stability supports vibration-prone installations. | Use Scenario: Front-end rectification in solar/wind inverters interfacing medium-voltage AC grids (e.g., 690 VAC) with HV DC links. IC Role / Device Role / Timing Role: High-reliability, high-VRRM rectifier in Vienna or active front-end topologies requiring low reverse recovery charge. Use Value: Ultra-low IR at elevated temperature minimizes standby losses during night-time grid synchronization; creepage margin supports IEC 62109 safety certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STBR3012G2Y-TR | D²PAK HV package (surface-mount), lower mass (1.48 g), Rth(j-c) = 0.55 °C/W, same electrical specs | Suitable for automated SMT assembly; requires PCB copper area ≥34.6 cm² for thermal management | Select when volume production, reflow compatibility, and space-constrained layouts are prioritized over serviceability |
| IXYS MBR30120CT | TO-247 package, VF = 1.1 V @ 30 A/25 °C, no AEC-Q101 qualification, IR = 500 µA @ 150 °C | Acceptable for industrial/non-automotive chargers; lacks PPAP support and automotive temp range guarantee | Select only for cost-sensitive, non-automotive applications where AEC-Q101 and 175 °C operation are not required |
Compared with STBR3012G2Y-TR, STBR3012WY offers superior thermal resistance and field-serviceable through-hole mounting; versus MBR30120CT, it delivers tighter leakage control, extended temperature validation, and automotive-grade process traceability - critical for OBC functional safety compliance.
Availability
STBR3012WY is available at Aetrix Electronics and suitable for on-board chargers, high-voltage DC link protection, industrial battery charging systems, and renewable energy grid-tie converters requiring stable component supply and long-term automotive-grade availability.
Supply support for STBR3012WY 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 microcontrollers, power devices, sensors, and analog ICs for automotive, industrial, and consumer markets.
STBR3012WY belongs to ST's Automotive Power Diodes product line, engineered specifically for high-reliability, high-efficiency rectification in electric vehicle powertrain subsystems - especially on-board chargers and DC fast charging interfaces.
FAQ
What is the mounting torque specification for STBR3012WY?
The recommended torque value for the DO-247 package's mounting screw is 0.8 N·m, with a maximum allowable torque of 1.0 N·m. Exceeding this may damage the internal bond wires or compromise the epoxy seal. Proper torque ensures optimal thermal contact to the heatsink while maintaining mechanical integrity under automotive vibration profiles.
Does STBR3012WY have a specified reverse recovery time (trr)?
No - STBR3012WY is a standard silicon rectifier (not a fast or ultrafast recovery type), and its datasheet does not specify trr. It is intended for line-frequency (50/60 Hz) and low-frequency (<1 kHz) rectification where reverse recovery losses are negligible compared to conduction losses. For high-frequency switching applications, ST recommends using dedicated fast recovery or SiC Schottky alternatives.
Is STBR3012WY pin-compatible with other DO-247 rectifiers?
Yes - STBR3012WY shares the standard DO-247 mechanical footprint and terminal layout with other ST DO-247 rectifiers (e.g., STTH3012W, STBR2512WY), enabling direct physical replacement in existing PCB designs. However, electrical characteristics (VF, IR, Rth) differ, so thermal and conduction loss validation is required before substitution.
Can STBR3012WY be used in parallel configurations?
Yes, but only with careful thermal and current balancing: matched devices, symmetrical PCB layout, shared heatsink, and individual current-sense resistors are required. Due to VF tolerance (±0.15 V), forced air cooling or active current sharing is recommended for >60 A total current. ST does not guarantee parallel operation without external balancing circuitry.
STBR3012WY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- ECOPACK®2
- Package/Case:
- DO-247-2 (Straight Leads)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1200 V
- Current - Average Rectified (Io):
- 30A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 30 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 2 µA @ 1200 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-247
- Operating Temperature - Junction:
- -40°C ~ 175°C
STBR3012WY FAQ
1.How can I place an order for STBR3012WY through Aetrix?
Please submit a Request for Quotation (RFQ) for STBR3012WY 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 STBR3012WY reliable?
The price and inventory of STBR3012WY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STBR3012WY is usually 5 days.
3.What payment methods are accepted for STBR3012WY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STBR3012WY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STBR3012WY?
STBR3012WY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STBR3012WY 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 STBR3012WY?
For technical support, including STBR3012WY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STBR3012WY requirements.
6.How does Aetrix verify that STBR3012WY is sourced from the original manufacturer or authorized distributors?
All STBR3012WY 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 STBR3012WY meets industry standards.
7.What is the process for return or replacement of STBR3012WY?
All STBR3012WY units undergo pre-shipment inspection (PSI). If there is an issue with STBR3012WY, 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 STBR3012WY part is unused and in its original packaging.
Return procedure for STBR3012WY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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