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STMicroelectronics STTA9012TV1
- Part No.:
- STTA9012TV1
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- ISOTOP
- Datasheet:
-
STTA9012TV1.pdf
- Description:
- DIODE MODULE GP 1200V 45A ISOTOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,207
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Product details
Overview
STTA9012TV1 from STMicroelectronics is an ultra-fast, soft-recovery 1200 V high-voltage diode in ISOTOP package, rated for 45 A average forward current per diode, 65 ns typical reverse recovery time, and 1.85 V maximum forward voltage at 45 A and 25 °C. It delivers low overall power losses in freewheel, snubber, clamping, and high-voltage rectifier applications with motor control and SMPS primary/secondary stages.
For engineers reviewing the STTA9012TV1 datasheet, STTA9012TV1 pinout, STTA9012TV1 application, or STTA9012TV1 equivalent, key selection criteria include softness factor (S = 1.2), low package inductance (< 5 nH), 2500 VRMS electrical insulation, and validated dynamic performance under high dIF/dt (up to 500 A/µs) at 125 °C junction temperature.
Technical Context
This dual-diode device integrates two independent 1200 V, 45 A ultra-fast diodes in a single insulated ISOTOP package. Its optimized carrier lifetime control enables soft reverse recovery (S factor = 1.2) and low noise switching, minimizing voltage overshoot and EMI in IGBT/MOSFET companion circuits.
The diode operates with 0.85 °C/W junction-to-case thermal resistance per diode and supports pulsed currents up to 700 A (5 µs, 5 kHz square wave). Dynamic parameters-including trr = 65 ns (typ), IRM = 50–60 A, and tfr = 900 ns-are characterized across Tj = 25–125 °C and dIF/dt = 50–500 A/µs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1200 V - Withstands repetitive reverse voltage up to 1200 V without breakdown; suitable for 600–800 V DC bus systems with safety margin. |
| IF(AV) | 2 × 45 A - Dual-diode configuration delivers 45 A average forward current per diode; total conduction capability scalable via parallel mounting. |
| trr (typ) | 65 ns - Ultra-fast reverse recovery minimizes turn-off switching losses in high-frequency (>20 kHz) SMPS and motor drive freewheel paths. |
| S factor | 1.2 - Soft recovery waveform (tb/ta ratio) reduces voltage spikes and EMI during commutation with IGBTs or MOSFETs. |
| Rth(j-c) | 0.85 °C/W per diode - Enables efficient heat transfer to heatsink; supports continuous operation at Tc = 70 °C with P1 = 94 W conduction loss. |
| Package inductance | < 5 nH - Low parasitic inductance preserves fast switching integrity and limits voltage ringing in high-dI/dt circuits. |
| Insulation rating | 2500 VRMS - Electrically isolates diode terminals from heatsink, enabling direct mounting on common ground planes without additional isolation. |
Pinout & Package
STTA9012TV1 uses the ISOTOP package: a 4-terminal, insulated, bolt-down power module with K1/A1/K2/A2 terminal layout. The package provides mechanical robustness, low thermal resistance, and integrated electrical isolation (2500 VRMS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| K1 | Cathode 1 | Output terminal for first diode; connects to high-side switch node in freewheel or snubber configurations. |
| A1 | Anode 1 | Input terminal for first diode; ties to load or transformer winding in demagnetizing or rectifier roles. |
| K2 | Cathode 2 | Output terminal for second diode; enables dual-channel operation or phase-redundant design in 3-phase inverters. |
| A2 | Anode 2 | Input terminal for second diode; electrically isolated from A1/K1, supporting independent circuit routing. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast soft recovery | trr = 65 ns (typ) with S = 1.2 ensures low EMI and reduced voltage overshoot during IGBT/MOSFET turn-off. |
| Low conduction loss | VF(max) = 1.85 V @ 45 A, 25 °C and Rd = 6 mΩ enable <94 W conduction loss per diode at Tc = 70 °C. |
| High-voltage ruggedness | VRRM = 1200 V and VRSM = 1200 V support operation in 800 V DC-link industrial drives and telecom rectifiers. |
| Insulated ISOTOP package | 2500 VRMS isolation and <45 pF capacitance eliminate need for insulating washers and reduce coupling noise. |
| High pulsed current capability | IFRM = 700 A (5 µs, 5 kHz square) and IFSM = 420 A (10 ms sine) support surge-tolerant snubber and clamp functions. |
Applications
| Motor Drive Freewheel Diode | SMPS Primary Snubber Diode |
|---|---|
Use Scenario: Used across IGBT collector-emitter in 3-phase inverter legs for inductive load energy recirculation. IC Role / Device Role / Timing Role: Freewheel diode providing low-loss, soft-recovery path during IGBT turn-off. Use Value: Reduces total system switching losses by >30% vs. standard fast recovery diodes due to S = 1.2 and trr = 65 ns. |
Use Scenario: Placed across flyback transformer primary to absorb leakage inductance energy during MOSFET turn-off. IC Role / Device Role / Timing Role: Clamping/snubber diode conducting transient voltage spikes with minimal delay. Use Value: Limits peak drain voltage to ≤1200 V while suppressing ringing via low-inductance (<5 nH) ISOTOP layout. |
| SMPS Secondary Rectifier | Demagnetizing Diode for Inductive Loads |
Use Scenario: High-voltage output rectification in resonant LLC or forward converters with ≥600 V output rails. IC Role / Device Role / Timing Role: High-efficiency rectifier handling 45 A average current with low VF and soft recovery. Use Value: Achieves >94% rectifier efficiency at full load due to VF(max) = 1.85 V and Rth(j-c) = 0.85 °C/W. |
Use Scenario: Connected across relay coils, solenoids, or transformer windings to dissipate stored magnetic energy. IC Role / Device Role / Timing Role: Demagnetizing diode enabling rapid core reset with controlled voltage rise rate. Use Value: Prevents arcing and contact wear by limiting dv/dt via soft recovery (S = 1.2) and low trr dispersion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast, high-voltage diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1212TV1 | Same ISOTOP package, but 1200 V/12 A rating; lower IF(AV), higher VF (2.1 V max), trr = 75 ns. | Targeted at lower-current snubbers or auxiliary supplies-not suitable for 45 A freewheeling. | Select when thermal budget is constrained and average current ≤12 A; verify derating for Tj = 150 °C. |
| IXYS MDD150-12N1 | 1200 V/150 A dual diode in SOT-227B; trr = 70 ns, VF = 1.95 V, Rth(j-c) = 0.35 °C/W, no built-in insulation. | Requires external isolation; better for high-current, low-thermal-resistance designs where heatsink isolation is managed separately. | Prefer for >100 A systems needing lower thermal resistance; add ceramic insulator and verify creepage/clearance. |
Compared with STTH1212TV1 and MDD150-12N1, STTA9012TV1 uniquely balances 45 A current handling, soft recovery (S = 1.2), and integrated 2500 VRMS insulation-making it optimal for space-constrained, noise-sensitive motor drives and isolated SMPS topologies.
Availability
STTA9012TV1 is available at Aetrix Electronics and suitable for motor control inverters, SMPS snubber networks, high-voltage rectification, and demagnetizing circuits requiring stable component supply and long-term industrial availability.
Supply support for STTA9012TV1 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, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.
STTA9012TV1 belongs to the TURBOSWITCH™ family-engineered specifically for ultra-low-loss, noise-free commutation in high-voltage, high-frequency power conversion systems where diode recovery behavior directly impacts IGBT/MOSFET reliability and EMI compliance.
FAQ
What is the maximum junction temperature and how does it affect reliability?
The STTA9012TV1 has a maximum operating junction temperature of 150 °C. Operating continuously at this limit reduces long-term reliability due to accelerated silicon degradation and bond wire fatigue. Derating to Tj ≤ 135 °C extends lifetime by >2× under thermal cycling; thermal design must maintain Tc ≤ 62 °C for Pmax = 104 W total dissipation.
Can STTA9012TV1 be used in parallel with other diodes?
Yes-its matched dynamic characteristics (trr, VF, S factor) and low thermal resistance support parallel operation. Use identical mounting torque (1.3 N·m), symmetric PCB traces, and individual current-sharing resistors (0.5–1 mΩ) to ensure balanced conduction. Avoid mixing with non-TURBOSWITCH diodes due to recovery mismatch.
How does the softness factor (S = 1.2) improve system-level performance?
An S factor of 1.2 indicates a longer tail time (tb) relative to initial decay time (ta), producing a gentler current fall rate during reverse recovery. This reduces di/dt-induced voltage spikes across stray inductance, lowering EMI emissions and stress on companion switches-critical for meeting CISPR-22 Class B limits in industrial drives.
Is the ISOTOP package compatible with standard heatsink mounting practices?
Yes-the ISOTOP package uses six M4 mounting screws (2 for heatsink attachment, 4 for terminal clamping) with recommended torque of 1.3 N·m (max 1.5 N·m). It requires no additional insulating hardware due to its 2500 VRMS-rated epoxy base, and fits standard 38.0 mm × 25.3 mm heatsink footprints with 30.2 mm center-to-center terminal spacing.
STTA9012TV1 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:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
- Supplier Device Package:
- ISOTOP®
STTA9012TV1 FAQ
1.How can I place an order for STTA9012TV1 through Aetrix?
Please submit a Request for Quotation (RFQ) for STTA9012TV1 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 STTA9012TV1 reliable?
The price and inventory of STTA9012TV1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTA9012TV1 is usually 5 days.
3.What payment methods are accepted for STTA9012TV1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTA9012TV1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STTA9012TV1?
STTA9012TV1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STTA9012TV1 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 STTA9012TV1?
For technical support, including STTA9012TV1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTA9012TV1 requirements.
6.How does Aetrix verify that STTA9012TV1 is sourced from the original manufacturer or authorized distributors?
All STTA9012TV1 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 STTA9012TV1 meets industry standards.
7.What is the process for return or replacement of STTA9012TV1?
All STTA9012TV1 units undergo pre-shipment inspection (PSI). If there is an issue with STTA9012TV1, 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 STTA9012TV1 part is unused and in its original packaging.
Return procedure for STTA9012TV1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STTA9012TV1 Tags
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BAT54C-7-F
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BAV99,215
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BAT54S-7-F
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BAT54S,215
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