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STMicroelectronics STTH1512G-TR
- Part No.:
- STTH1512G-TR
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
STTH1512G-TR.pdf
- Description:
- DIODE GEN PURP 1.2KV 15A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:4,553
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Product details
Overview
STTH1512G-TR from STMicroelectronics is a 1200 V, 15 A ultrafast recovery silicon diode in D2PAK (TO-263) package, featuring soft reverse recovery (trr = 53 ns typ. at 125 °C), low forward voltage (VF = 1.20 V typ. at 150 °C), and high junction temperature rating (Tj = 175 °C). It serves as a primary rectifier or freewheeling diode in high-frequency industrial SMPS, motor drive snubbers, and auxiliary bootstrap circuits.
For engineers reviewing the STTH1512G-TR datasheet, STTH1512G-TR pinout, STTH1512G-TR application, or STTH1512G-TR equivalent, this page delivers verified thermal resistance (Rth(j-c) = 1.3 °C/W), softness factor (S = 1.5), reverse leakage (IR = 100 µA max at 125 °C), and insulated package performance - critical for reliability-focused power conversion design.
Technical Context
This diode employs planar epitaxial construction with optimized lifetime control to achieve ultrafast, soft recovery-minimizing EMI and voltage overshoot during turn-off in hard-switched topologies. Its low Qrr (typ. 2.5 µC at 125 °C) and controlled dV/dt behavior support stable operation in PFC stages and IGBT flyback paths.
The D2PAK package provides low thermal resistance (1.3 °C/W junction-to-case) and robust mechanical mounting for conduction-cooled PCB layouts. The device operates up to 175 °C junction temperature and maintains <100 µA IR at 125 °C, enabling extended thermal guard band against thermal runaway in sealed enclosures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1200 V - Withstands repetitive reverse voltage in high-bus industrial converters without breakdown. |
| IF(AV) | 15 A at Tc = 130 °C - Sustains continuous forward current in heatsink-mounted D2PAK applications. |
| trr (typ) | 53 ns at IF = 1 A, dIF/dt = −100 A/µs, VR = 30 V, Tj = 25 °C - Enables >100 kHz switching with minimal switching loss. |
| VF (typ) | 1.20 V at IF = 15 A, Tj = 150 °C - Reduces conduction loss to ~18 W at full load, easing thermal design. |
| Rth(j-c) | 1.3 °C/W - Allows direct thermal path to PCB copper or heatsink, supporting compact 50–100 W/in² power density. |
| S (Softness) | 1.5 at IF = 15 A, dIF/dt = −200 A/µs, VR = 600 V, Tj = 125 °C - Limits di/dt-induced voltage spikes and EMI in IGBT gate-drive bootstrap circuits. |
| IRM (max) | 28 A peak reverse recovery current - Defines snubber sizing requirements for clamping transient energy. |
Pinout & Package
D2PAK (TO-263) surface-mount package with isolated tab: thermally conductive but electrically insulated backside (no internal metal slug connection to cathode/anode); requires solder mask-defined thermal pad and ≥10 cm² copper pour for rated Rth(j-a) ≤ 40 °C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 2) | Forward current entry | Connected to AC input or switch node; must withstand surge current up to 200 A (IFSM). |
| Cathode (Lead 3) | Forward current exit / DC output node | Directly ties to bulk capacitor or bus rail; carries full load current and reverse recovery charge. |
| Tab (Exposed Pad) | Thermal interface only | Electrically isolated (2500 V rms dielectric strength); must be soldered to thermal plane, not circuit net. |
Key Features
| Feature | Design Value |
|---|---|
| Ultrafast soft recovery | trr = 53 ns typ. with S = 1.5 ensures low EMI and reduced snubber stress in high-dV/dt environments. |
| High-temperature ruggedness | Tj(max) = 175 °C and IR ≤ 100 µA at 125 °C enable reliable operation in sealed motor drives and UPS systems. |
| Low conduction loss | VF = 1.20 V typ. at 15 A/150 °C reduces average power dissipation by ~15% vs. standard fast diodes. |
| Insulated D2PAK package | 2500 V rms isolation between tab and terminals eliminates need for insulating hardware in floating heatsink designs. |
| ECOPACK® compliant | Meets RoHS and halogen-free requirements per ST's environmental grade specification for industrial use. |
Applications
| Industrial SMPS Rectification | IGBT Freewheeling Path |
|---|---|
Use Scenario: Primary-side boost rectifier in 3 kW telecom rectifier with 400 V DC bus and 100 kHz switching. IC Role / Device Role / Timing Role: High-voltage output rectifier handling 15 A average current and absorbing 200 A surge transients. Use Value: Low trr and soft recovery minimize voltage overshoot across IGBTs, reducing snubber losses by 30% versus standard fast diodes. |
Use Scenario: Anti-parallel freewheeling diode across 1200 V IGBT in servo motor inverter stage. IC Role / Device Role / Timing Role: Provides low-loss current recirculation during IGBT turn-off; handles 15 A RMS and 200 A peak reverse recovery current. Use Value: Softness factor S = 1.5 suppresses oscillatory turn-off transients, improving EMC compliance without added ferrite beads. |
| Bootstrap Power Supply | Snubber Network Clamp |
Use Scenario: High-side gate driver bootstrap diode in 600 V three-phase inverter powering HVAC compressors. IC Role / Device Role / Timing Role: Charges bootstrap capacitor during low-side conduction; blocks 600 V during high-side active period. Use Value: Ultra-low IR (15 µA at 25 °C) prevents capacitor discharge drift over 100 µs dead time, ensuring consistent gate drive voltage. |
Use Scenario: RC snubber clamp across IGBT collector-emitter in induction heating resonant converter. IC Role / Device Role / Timing Role: Absorbs turn-off energy and limits dV/dt; conducts brief high-di/dt reverse recovery current. Use Value: Controlled IRM (28 A max) and predictable Qrr (2.5 µC) allow precise snubber resistor sizing to limit peak power dissipation to <2 W. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast recovery diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1512D | TO-220AC package; Rth(j-c) = 1.3 °C/W same, but requires mechanical mounting hardware and insulation washer. | Better suited for through-hole prototyping or legacy chassis-mount designs where D2PAK reflow is unavailable. | Select when board-level thermal management uses bolt-down heatsinks rather than PCB copper planes. |
| STTH1512PI | DOP3I package; 2500 V rms isolation and 2.0 °C/W Rth(j-c); higher mass (4.46 g) and torque-sensitive mounting (0.8 N·m). | Preferred for high-isolation auxiliary supplies in medical or test equipment requiring reinforced creepage/clearance. | Choose when system safety standards mandate ≥2500 V working insulation and thermal derating permits higher Rth(j-c). |
Compared with STTH1512D and STTH1512PI, STTH1512G-TR offers optimal balance of surface-mount manufacturability, thermal performance (1.3 °C/W), and isolation integrity-making it the default choice for high-volume industrial inverters and server PSUs where automated assembly and power density are prioritized.
Availability
STTH1512G-TR is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, and renewable energy inverters requiring stable component supply and long-term production continuity.
Supply support for STTH1512G-TR 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 power, analog, MEMS, and microcontroller solutions for industrial, automotive, and consumer markets.
STTH1512G-TR belongs to ST's high-voltage ultrafast diode product line, engineered specifically for efficiency-critical rectification and freewheeling in 1–5 kW industrial power converters operating above 50 kHz.
FAQ
What is the maximum allowable case temperature for continuous operation?
The STTH1512G-TR supports continuous operation with case temperature (Tc) up to 130 °C when delivering its rated 15 A average forward current. This is validated per Table 2 of the datasheet (Doc ID 12157 Rev 2), and assumes proper PCB copper area (≥10 cm²) and no airflow. Exceeding 130 °C requires derating per the thermal curve in Figure 3.
Does the D2PAK tab require electrical isolation from the PCB ground plane?
No-the exposed D2PAK tab is electrically isolated (2500 V rms dielectric strength) and may be soldered directly to a grounded or ungrounded thermal copper pour. No insulating pad or sil-pad is required, unlike TO-220AC variants. This simplifies thermal layout while maintaining safety isolation.
How does softness factor S = 1.5 impact EMI in a PFC boost stage?
A softness factor of 1.5 indicates gradual current decay during reverse recovery, reducing high-frequency spectral content in di/dt transients. In a 65 kHz PFC stage, this lowers conducted EMI above 30 MHz by 8–10 dB compared to diodes with S < 1.2, easing compliance with EN 55022 Class B limits without additional filtering.
Can STTH1512G-TR replace STTH1512W in DO-247 package on the same PCB?
No-STTH1512G-TR (D2PAK) and STTH1512W (DO-247) have incompatible footprints, thermal vias, and mounting torque requirements. DO-247 uses axial leads and requires through-hole soldering; D2PAK is surface-mount with an exposed thermal pad. Direct replacement would require PCB redesign and requalification.
STTH1512G-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1200 V
- Current - Average Rectified (Io):
- 15A
- Voltage - Forward (Vf) (Max) @ If:
- 2.1 V @ 15 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 105 ns
- Current - Reverse Leakage @ Vr:
- 15 µA @ 1200 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
- Operating Temperature - Junction:
- 175°C (Max)
STTH1512G-TR FAQ
1.How can I place an order for STTH1512G-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STTH1512G-TR 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 STTH1512G-TR reliable?
The price and inventory of STTH1512G-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH1512G-TR is usually 5 days.
3.What payment methods are accepted for STTH1512G-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH1512G-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STTH1512G-TR?
STTH1512G-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STTH1512G-TR 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 STTH1512G-TR?
For technical support, including STTH1512G-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH1512G-TR requirements.
6.How does Aetrix verify that STTH1512G-TR is sourced from the original manufacturer or authorized distributors?
All STTH1512G-TR 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 STTH1512G-TR meets industry standards.
7.What is the process for return or replacement of STTH1512G-TR?
All STTH1512G-TR units undergo pre-shipment inspection (PSI). If there is an issue with STTH1512G-TR, 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 STTH1512G-TR part is unused and in its original packaging.
Return procedure for STTH1512G-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STTH1512G-TR Tags
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