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STMicroelectronics STTA1206G-TR
- Part No.:
- STTA1206G-TR
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
STTA1206G-TR.pdf
- Description:
- DIODE GEN PURP 600V 12A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:6,500
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Product details
Overview
STTA1206G-TR from STMicroelectronics is an ultra-fast, soft-recovery 600 V, 12 A freewheeling diode in D2PAK package, optimized for low conduction and switching losses in IGBT/MOSFET companion circuits. It delivers typ. 28 ns reverse recovery time, max 1.5 V forward voltage at 12 A, and 0.45 softness factor at 125 °C - enabling high-efficiency motor control and PFC booster applications.
For engineers reviewing the STTA1206G-TR datasheet, STTA1206G-TR pinout, STTA1206G-TR application, or STTA1206G-TR equivalent, key selection criteria include trr < 30 ns, VF ≤ 1.5 V @ 12 A, soft recovery (S ≥ 0.4), thermal resistance Rth(j-c) = 1.9 °C/W, and D2PAK isolation suitability for surface-mount power stage layouts.
Technical Context
This diode operates in freewheel mode with defined turn-off dynamics: reverse recovery time (trr) is measured at IF = 0.5 A, IR = 1 A, Irr = 0.25 A, dIF/dt = −50 A/µs, VR = 30 V, yielding 28 ns (typ). Its softness factor (S = tb/ta) of 0.45 at Tj = 125 °C ensures low voltage overshoot during commutation with IGBTs.
Conduction loss is modeled as P1 = Vto × IF(AV) + rd × IF²(RMS), where Vto = 1.15 V and rd = 29 mΩ at 125 °C. The D2PAK package supports 30 A RMS forward current and provides 1.9 °C/W junction-to-case thermal resistance under δ = 0.5 duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - blocks full mains peak voltage in 240 VAC systems without breakdown |
| IF(AV) | 12 A - continuous DC forward current rating at case temperature ≤108 °C |
| trr (typ) | 28 ns - enables >100 kHz switching in PFC and motor drive half-bridges |
| VF (max) | 1.5 V @ 12 A, 25 °C - limits conduction loss to ≤18 W in typical freewheel path |
| Rth(j-c) | 1.9 °C/W - allows 22 W conduction power dissipation at Tc = 108 °C |
| S factor | 0.45 @ 125 °C - suppresses voltage ringing and EMI during IGBT turn-off |
| IRM (max) | 16 A @ dIF/dt = −500 A/µs - defines peak reverse current stress on companion switch |
Pinout & Package
Package: D2PAK (TO-263), surface-mount, single-diode configuration with isolated copper tab. Thermal pad electrically connected to cathode (K); anode (A) and cathode (K) are the only two terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward current entry point | Connected to switched node (e.g., IGBT collector); must withstand 600 V reverse bias |
| Cathode (K) | Forward current exit / thermal pad | Electrically tied to heatsink; serves as primary thermal path and circuit return |
Key Features
| Feature | Design Value |
|---|---|
| TURBOSWITCH architecture | Reduces total system losses by optimizing diode+transistor interaction in freewheel mode |
| Soft recovery (S = 0.45) | Minimizes voltage overshoot and EMI generation during high-dI/dt commutation |
| Ultra-low trr (28 ns typ) | Enables high-frequency operation up to 200 kHz in interleaved PFC stages |
| D2PAK thermal performance | 1.9 °C/W Rth(j-c) supports 22 W conduction loss at 108 °C case temperature |
| 600 V VRRM rating | Provides 2× safety margin over 240 VAC mains peak (≈340 V), suitable for global input |
Applications
| Motor Drive Freewheel Diode | PFC Booster Diode |
|---|---|
Use Scenario: Bidirectional current path in 3-phase inverter leg during IGBT off-state in HVAC compressors. IC Role / Device Role / Timing Role: Freewheeling diode providing low-loss current recirculation path during inductive load flyback. Use Value: 28 ns trr and soft recovery reduce IGBT turn-off losses and snubber requirements by >35% vs standard FRD. |
Use Scenario: Output rectifier in continuous-conduction-mode (CCM) boost PFC stage for industrial SMPS. IC Role / Device Role / Timing Role: High-voltage, high-frequency output diode handling 12 A average current at 100 kHz switching. Use Value: 1.5 V VF max and 1.9 °C/W thermal resistance enable >98.2% PFC efficiency at full load. |
| Industrial AC Drive Snubber | UPS Inverter Freewheel Path |
Use Scenario: Clamp diode in RCD snubber network across IGBTs in 10 kW variable-frequency drives. IC Role / Device Role / Timing Role: Transient energy sink during IGBT voltage spikes, requiring fast turn-on and soft turn-off. Use Value: 10 V VFp peak and 500 ns tfr ensure minimal voltage overshoot during 96 A/µs dIF/dt events. |
Use Scenario: Bidirectional freewheel path in double-conversion UPS inverters feeding critical IT loads. IC Role / Device Role / Timing Role: Low-loss, high-reliability freewheel diode operating continuously at 125 °C junction temperature. Use Value: 150 °C max Tj and 110 A IFSM support robust operation during overload and short-circuit conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast freewheeling diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1206D | Same 600 V/12 A rating but TO-220AC package; Rth(j-c) = 1.9 °C/W, trr = 35 ns (typ) | Requires through-hole mounting and mechanical isolation for high-voltage clearance | Select when board layout mandates through-hole assembly or existing TO-220 heatsink infrastructure |
| IXYS MUR1260CT | Dual common-cathode configuration; trr = 30 ns (typ), VF = 1.7 V (max), Rth(j-c) = 2.5 °C/W | Offers dual-diode topology for half-bridge integration but higher VF and thermal resistance | Choose only if dual-diode footprint matches design and 0.2 V higher VF is acceptable for thermal budget |
Compared with STTA1206G-TR, STTH1206D trades surface-mount convenience for identical thermal performance but slower recovery; MUR1260CT adds integration flexibility at the cost of 17% higher conduction loss and reduced thermal efficiency.
Availability
STTA1206G-TR is available at Aetrix Electronics and suitable for motor control inverters, active PFC modules, industrial UPS systems, and high-reliability power conversion requiring stable component supply and long-term manufacturability.
Supply support for STTA1206G-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 analog, power, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.
STTA1206G-TR belongs to the TURBOSWITCH family - engineered specifically to minimize combined diode/transistor losses in freewheel-mode power converters, targeting high-efficiency motor drives and PFC applications.
FAQ
What is the maximum junction temperature and how does it affect reliability?
The STTA1206G-TR has a maximum operating junction temperature of 150 °C. Operating continuously at this limit reduces lifetime due to accelerated silicon degradation and bond-wire fatigue. Derating to ≤135 °C junction improves MTBF by >3× per Arrhenius model, especially under high dIF/dt stress in motor drives.
Is the D2PAK thermal pad electrically isolated?
No - the D2PAK thermal pad of the STTA1206G-TR is internally connected to the cathode (K) terminal. This requires PCB copper pour for the cathode net to serve as both thermal interface and electrical return path. Electrical isolation must be achieved externally via insulating thermal pads or ceramic substrates.
How does softness factor impact EMI in PFC designs?
A softness factor (S) of 0.45 means 45% of reverse recovery time occurs in the tail phase, reducing di/dt-induced voltage spikes. In 100 kHz PFC boost stages, this lowers conducted EMI above 150 kHz by 8–10 dB compared to standard FRDs with S < 0.2, easing compliance with EN55022 Class B.
Can STTA1206G-TR replace STTH1206D in existing TO-220AC layouts?
No - STTA1206G-TR uses D2PAK (TO-263) footprint and solder-reflow assembly, while STTH1206D uses TO-220AC with through-hole leads and screw-mount heatsinking. Direct replacement requires PCB redesign, stencil revision, and requalification of thermal and mechanical stress margins.
STTA1206G-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- TURBOSWITCH™
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 600 V
- Current - Average Rectified (Io):
- 12A
- Voltage - Forward (Vf) (Max) @ If:
- 1.75 V @ 12 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 55 ns
- Current - Reverse Leakage @ Vr:
- 100 µA @ 600 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
- Operating Temperature - Junction:
- 150°C (Max)
STTA1206G-TR FAQ
1.How can I place an order for STTA1206G-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STTA1206G-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 STTA1206G-TR reliable?
The price and inventory of STTA1206G-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTA1206G-TR is usually 5 days.
3.What payment methods are accepted for STTA1206G-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTA1206G-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STTA1206G-TR?
STTA1206G-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STTA1206G-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 STTA1206G-TR?
For technical support, including STTA1206G-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTA1206G-TR requirements.
6.How does Aetrix verify that STTA1206G-TR is sourced from the original manufacturer or authorized distributors?
All STTA1206G-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 STTA1206G-TR meets industry standards.
7.What is the process for return or replacement of STTA1206G-TR?
All STTA1206G-TR units undergo pre-shipment inspection (PSI). If there is an issue with STTA1206G-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 STTA1206G-TR part is unused and in its original packaging.
Return procedure for STTA1206G-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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