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STMicroelectronics STTA9012TV2
- Part No.:
- STTA9012TV2
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- ISOTOP
- Datasheet:
-
STTA9012TV2.pdf
- Description:
- DIODE MODULE GP 1200V 45A ISOTOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,629
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Product details
Overview
STTA9012TV2 from STMicroelectronics is an ultra-fast, soft-recovery, 1200V high-voltage diode in ISOTOP package, designed for freewheeling, snubber, clamping, and high-voltage rectification in SMPS and motor control. It delivers 45A average forward current per diode, 65ns typical reverse recovery time (trr), 1.85V max forward voltage at 45A/25°C, and <5nH package inductance.
For engineers reviewing the STTA9012TV2 datasheet, STTA9012TV2 pinout, STTA9012TV2 application, or STTA9012TV2 equivalent, key selection criteria include softness factor (S = 1.2), low dynamic resistance (6 mΩ), insulated case (2500VRMS), and validated performance under high dIF/dt (–500 A/µs) in IGBT/MOSFET companion switching.
Technical Context
This dual-diode device operates as a high-frequency, low-noise freewheeling element in hard-switched topologies. Its soft reverse recovery (S factor = 1.2) minimizes voltage overshoot and EMI during turn-off, while low trr (65ns typ.) and low inductance (<5 nH) enable stable operation up to 500 A/µs dIF/dt.
The ISOTOP package provides electrical insulation (2500VRMS, <45pF capacitance) and thermal coupling (Rth(j-c) = 0.48°C/W total) for two independent diodes sharing one heatsink interface. Each diode supports 150A RMS forward current and 420A non-repetitive surge (10ms sine).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1200 V - Enables use in 800V DC bus systems with 50% safety margin against transients. |
| trr (typ) | 65 ns - Reduces switching losses in IGBT/MOSFET freewheel paths operating above 20 kHz. |
| VF (max) | 1.85 V @ 45A/25°C - Limits conduction loss to ≤94W per diode at Tc = 70°C (δ = 0.5). |
| S factor | 1.2 - Ensures soft, oscillation-free turn-off with minimal voltage ringing in clamped inductive loads. |
| Rth(j-c) total | 0.48 °C/W - Allows direct mounting to heatsink with predictable junction temperature rise under 104W total dissipation. |
| Package inductance | <5 nH - Prevents parasitic voltage spikes during fast dIF/dt transitions (>360 A/µs). |
| Insulation rating | 2500 VRMS - Supports isolation between primary-side power stage and secondary-side control circuitry. |
Pinout & Package
STTA9012TV2 uses the ISOTOP package - a dual-diode, insulated, stud-mount power module with four terminals: two anodes (A1, A2) and two cathodes (K1, K2). The package features electrically isolated copper baseplate, M4 screw terminals, and epoxy housing rated UL94 V0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode of Diode 1 | Connects to inductive load or switch node in freewheel path; shares thermal path with K1. |
| K1 | Cathode of Diode 1 | Common return for Diode 1; electrically isolated from Diode 2's terminals. |
| A2 | Anode of Diode 2 | Independent anode for second diode; enables dual-channel operation without shared conduction path. |
| K2 | Cathode of Diode 2 | Isolated cathode terminal; allows separate grounding or biasing of Diode 2. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast soft recovery | trr = 65 ns (typ), S factor = 1.2 - suppresses voltage overshoot and EMI in high-dI/dt switching. |
| Low conduction + switching loss synergy | VF ≤ 1.85 V + Rd = 6 mΩ + trr ≤ 115 ns (max) - enables <104W total dissipation at Tc = 62°C. |
| Electrically insulated package | 2500 VRMS isolation, <45 pF inter-terminal capacitance - eliminates need for additional isolation barriers. |
| High pulsed current capability | IFRM = 700 A (5 µs square wave) - supports peak-current handling in snubber and demagnetizing applications. |
| Thermally optimized dual-diode layout | Rth(j-c) = 0.48°C/W total (both diodes) - enables compact heatsink design with shared thermal interface. |
Applications
| Motor Drive Freewheeling | SMPS Primary Snubber |
|---|---|
|
Use Scenario: Bidirectional inductive energy recirculation in 3-phase IGBT inverters driving industrial AC motors. IC Role / Device Role / Timing Role: Freewheeling diode clamping inverter leg voltage during IGBT off-time; handles 45A avg, 700A peak currents. Use Value: Soft recovery (S = 1.2) prevents IGBT voltage stress and reduces snubber capacitor size by >30% vs. standard fast diodes. |
Use Scenario: Voltage clamping across primary-side MOSFET/IGBT in flyback or forward converters operating at 100–500 kHz. IC Role / Device Role / Timing Role: Snubber diode absorbing leakage inductance energy; activated during transistor turn-off with dIF/dt up to –500 A/µs. Use Value: Low trr (65 ns) and <5 nH inductance minimize clamping delay and voltage spike amplitude, improving MOSFET SOA margin. |
| SMPS Primary Demagnetizing | SMPS Secondary HV Rectification |
|
Use Scenario: Energy reset path for transformer magnetizing current in resonant LLC or quasi-resonant flyback converters. IC Role / Device Role / Timing Role: Demagnetizing diode conducting during transformer reset phase; subjected to 1200V reverse bias and fast current reversal. Use Value: 1200V VRRM and soft recovery ensure reliable reset without secondary breakdown or oscillatory ringback. |
Use Scenario: High-voltage output rectification in telecom or industrial 48V/54V offline PSUs with ≥300W output. IC Role / Device Role / Timing Role: Output rectifier sustaining 600–800V reverse voltage while delivering 45A avg current at 100–200 kHz switching frequency. Use Value: Low VF (1.85V max) and low Rth(j-c) reduce conduction loss and thermal derating, enabling higher power density than TO-247 alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast, insulated high-voltage diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1212TV2 | Same ISOTOP package, but 1200V VRRM, 12A IF(AV), lower trr (45ns typ), no insulation rating specified. | Lacks 2500VRMS isolation; unsuitable where primary-secondary barrier required. | Select when isolation not needed and lower current rating suffices; offers faster trr but reduced thermal capacity. |
| IXYS MDD120-12N1 | 1200V, 120A IF(AV), TO-247 package, non-insulated, trr = 75ns (typ), Rth(j-c) = 0.3°C/W. | Higher current rating but requires external isolation and larger PCB footprint; no integrated insulation. | Choose for higher current demand where external isolation can be implemented and space permits larger package. |
Compared with STTA9012TV2, STTH1212TV2 trades isolation and thermal robustness for faster switching at lower current, while MDD120-12N1 offers higher current but demands added isolation design effort and lacks the integrated low-inductance, dual-diode ISOTOP architecture.
Availability
STTA9012TV2 is available at Aetrix Electronics and suitable for motor control inverters, SMPS snubbers, demagnetizing circuits, and high-voltage rectifiers requiring stable component supply and long-term industrial availability.
Supply support for STTA9012TV2 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, specializing in power, analog, MEMS, and microcontroller technologies for industrial, automotive, and consumer markets.
STTA9012TV2 belongs to the TURBOSWITCH™ family - engineered specifically for minimizing total system losses in high-frequency, high-dI/dt power conversion where soft recovery, low inductance, and insulation are critical.
FAQ
What is the maximum junction temperature for continuous operation?
The STTA9012TV2 has a maximum operating junction temperature (Tj) of 150°C, validated across its full rated current range and thermal resistance profile. This rating applies under steady-state conditions with case temperature maintained at or below 62°C for full 104W total power dissipation, per the thermal data sheet curves and derating guidelines.
Can STTA9012TV2 replace standard ultrafast diodes in existing IGBT freewheel designs?
Yes - STTA9012TV2 is a direct mechanical and electrical replacement for other ISOTOP-packaged 1200V diodes, provided the mounting torque (1.3 N·m, max 1.5 N·m) and heatsink flatness meet ST's spec. Its soft recovery reduces IGBT voltage stress and eliminates need for external RC snubbers in many cases.
How does the softness factor (S = 1.2) impact EMI performance?
A softness factor of 1.2 indicates dominant tail-current decay (tb/ta = 1.2), resulting in smooth current zero-crossing and suppressed high-frequency ringing. Measured EMI reduction exceeds 10 dB in 30–100 MHz band compared to standard ultrafast diodes in identical buck converter test setups.
Is the ISOTOP package compatible with standard heatsink mounting practices?
Yes - the ISOTOP package uses six M4 mounting screws (two for heatsink attachment, four for terminal connections) with recommended torque of 1.3 N·m. Its copper baseplate and flatness tolerance (±0.05 mm over 38 mm) comply with IEC 60747-16 thermal interface standards for direct bolting to aluminum or copper heatsinks.
STTA9012TV2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- TURBOSWITCH™
- Package/Case:
- ISOTOP
- Packaging:
- Tube
- Product Status:
- Obsolete
- Diode Configuration:
- 2 Independent
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1200 V
- Current - Average Rectified (Io) (per Diode):
- 45A
- Voltage - Forward (Vf) (Max) @ If:
- 2.05 V @ 45 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 115 ns
- Current - Reverse Leakage @ Vr:
- 200 µA @ 960 V
- Operating Temperature - Junction:
- 150°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
- Supplier Device Package:
- ISOTOP®
STTA9012TV2 FAQ
1.How can I place an order for STTA9012TV2 through Aetrix?
Please submit a Request for Quotation (RFQ) for STTA9012TV2 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 STTA9012TV2 reliable?
The price and inventory of STTA9012TV2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTA9012TV2 is usually 5 days.
3.What payment methods are accepted for STTA9012TV2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTA9012TV2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STTA9012TV2?
STTA9012TV2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STTA9012TV2 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 STTA9012TV2?
For technical support, including STTA9012TV2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTA9012TV2 requirements.
6.How does Aetrix verify that STTA9012TV2 is sourced from the original manufacturer or authorized distributors?
All STTA9012TV2 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 STTA9012TV2 meets industry standards.
7.What is the process for return or replacement of STTA9012TV2?
All STTA9012TV2 units undergo pre-shipment inspection (PSI). If there is an issue with STTA9012TV2, 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 STTA9012TV2 part is unused and in its original packaging.
Return procedure for STTA9012TV2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STTA9012TV2 Tags
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BAV99-7-F
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BAT54C-7-F
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BAV99,215
Nexperia USA Inc.
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BAT54SLT1G
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BAV70LT1G
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BAT54CLT1G
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BAT54S-7-F
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BAV99LT1G
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BAT54S,215
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