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STMicroelectronics STC03DE150
- Part No.:
- STC03DE150
- Manufacturer:
- STMicroelectronics
- Category:
- Special Purpose
- Package:
- TO-247-4
- Datasheet:
-
STC03DE150.pdf
- Description:
- TRANS ESBT 1500V 3A TO-247-4L
- Quantity:
- Payment:
- Shipping:
Inventory:7,377
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Product details
Overview
STC03DE150 from STMicroelectronics is a 1500 V, 3 A hybrid Emitter-Switched Bipolar Transistor (ESBT™) in TO-247-4L package, featuring 0.55 Ω RCS(ON), 750 pF Ciss, and 150 kHz switching capability. It integrates high-voltage bipolar and low-voltage MOSFET technologies for auxiliary flyback SMPS in three-phase industrial mains systems.
For engineers reviewing the STC03DE150 datasheet, STC03DE150 pinout, STC03DE150 application, or STC03DE150 equivalent, key selection criteria include its squared RBSOA up to 1500 V, fast 14 ns fall time with RG = 47 Ω, low dynamic VCS(dyn) (2.2 V at 1 ms), and gate-driven base control architecture optimized for snubberless operation.
Technical Context
The STC03DE150 implements an ESBT topology where a low-voltage MOSFET drives the base of a high-voltage bipolar transistor, enabling precise turn-on/turn-off control while sustaining 1500 V blocking. Its hybrid structure delivers superior safe operating area (RBSOA) and reduced switching losses versus conventional IGBTs.
It operates with ±20 V gate-source voltage, requires 12.5 nC total gate charge, and achieves 760 ns storage time under inductive load conditions (VClamp = 1200 V, IC = 1.8 A). The device is rated for TJ ≤ 125 °C and features 1 °C/W junction-to-case thermal resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCS(SS) | 1500 V - Enables direct use in 1200 V clamped three-phase auxiliary supplies without external snubber. |
| RCS(ON) | 0.55 Ω - Delivers low conduction loss at 1.8 A, supporting efficient operation in compact flyback transformers. |
| Ciss | 750 pF - Low input capacitance reduces gate drive power and enables stable 150 kHz switching with RG = 47 Ω. |
| tf | 14 ns - Fast fall time minimizes switching transition losses in high-frequency auxiliary SMPS designs. |
| hFE | 3.5–10 - Predictable DC current gain ensures reliable base current scaling (e.g., 0.36 A for 1.8 A collector current). |
| Ptot | 100 W - Supports continuous operation at full 3 A with adequate heatsinking per 1 °C/W Rthj-case. |
Pinout & Package
TO-247-4L package with 4 terminals: Collector (pin 1), Gate (pin 2), Emitter (pin 3), and Base (pin 4). The fourth terminal provides dedicated base access for independent control of the bipolar section, distinguishing it from standard IGBTs or MOSFETs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Collector) | High-voltage output node | Connects to primary winding of flyback transformer; rated for 1500 V blocking and 3 A continuous current. |
| Pin 2 (Gate) | MOSFET gate input | Controls base drive via integrated MOSFET; accepts ±20 V logic-level signals with 12.5 nC QGS(tot). |
| Pin 3 (Emitter) | Common emitter reference | Serves as return path for both MOSFET source and bipolar emitter; electrically isolated from base terminal. |
| Pin 4 (Base) | Bipolar transistor base | Enables direct base current monitoring or external base biasing; critical for optimizing switching speed and saturation. |
Key Features
| Feature | Design Value |
|---|---|
| Squared RBSOA up to 1500 V | Enables robust short-circuit withstand in unclamped inductive loads without derating at high voltage. |
| Very low Ciss (750 pF) | Reduces gate driver power dissipation and improves noise immunity in high-density power modules. |
| Fast switching (tf = 14 ns) | Minimizes energy loss during transitions, allowing higher frequency operation without compromising efficiency. |
| Dedicated base terminal | Permits active base current control and real-time saturation monitoring-unavailable in standard IGBTs. |
Applications
| Industrial Three-Phase Auxiliary SMPS | Motor Drive Control Power Supply |
|---|---|
Use Scenario: Provides isolated 12–24 V bias supply for gate drivers and logic in 400/690 VAC motor inverters. IC Role / Device Role / Timing Role: ESBT acts as main switch in flyback converter; operates at 100–150 kHz with snubberless 1500 V clamp capability. Use Value: Eliminates snubber network, reducing BOM count and PCB area while maintaining reliability across voltage transients. | Use Scenario: Powers microcontroller, isolation amplifiers, and current sensors in servo drive control boards. IC Role / Device Role / Timing Role: Functions as primary-side switch in auxiliary flyback; leverages squared RBSOA to survive bus overvoltage events. Use Value: Sustains 1500 V blocking without derating, enabling single-component solution for 690 VAC-rated systems. |
| PLC Power Management Module | Energy Meter Auxiliary Supply |
Use Scenario: Generates regulated 5 V/3.3 V rails for CPU, communication ICs, and analog front-end in programmable logic controllers. IC Role / Device Role / Timing Role: High-voltage ESBT switch in compact flyback; uses dedicated base terminal for adaptive gate drive tuning. Use Value: Achieves <1% output regulation drift over temperature due to stable hFE and low VCS(ON) drift. | Use Scenario: Supplies isolated power to metrology ADCs and RF communication modules in DIN-rail energy meters. IC Role / Device Role / Timing Role: Primary switch in ultra-compact flyback; exploits low Ciss and fast tf to meet EN 61000-4-5 surge immunity requirements. Use Value: Withstands 4 kV surge pulses without failure due to robust RBSOA and 125 °C max junction rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage flyback switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STGP10NC60KD | 600 V IGBT; no dedicated base terminal; higher VCE(sat) (1.8 V @ 10 A); 1000 pF Cies | Limited to 400 VAC auxiliary supplies; requires snubber for >600 V transient suppression | Select only if system voltage ≤ 600 V and board space allows snubber components. |
| FGB3040G | 1200 V ESBT; 0.8 Ω RCS(ON); 1000 pF Ciss; TO-247-3L (no base terminal) | Reduced voltage margin (1200 V vs. 1500 V); no independent base access limits dynamic optimization | Acceptable for 480 VAC systems where base monitoring is not required and 300 V safety margin suffices. |
Compared with STGP10NC60KD and FGB3040G, STC03DE150 uniquely supports snubberless 1500 V operation with base-terminal visibility-enabling tighter control of switching transitions and improved surge resilience in three-phase auxiliary power stages.
Availability
STC03DE150 is available at Aetrix Electronics and suitable for industrial three-phase auxiliary SMPS, motor drive control power supplies, and PLC power management modules requiring stable component supply and long-term design continuity.
Supply support for STC03DE150 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 management, automotive ICs, and industrial discrete devices.
The ESBT™ product line was developed specifically for high-efficiency, high-reliability auxiliary power conversion in industrial three-phase equipment, combining bipolar ruggedness with MOSFET controllability.
FAQ
What is the recommended gate resistor value for STC03DE150 in a 150 kHz flyback design?
The datasheet specifies RG = 47 Ω for characterization at 150 kHz, yielding 14 ns fall time and 760 ns storage time. For optimal EMI and loss trade-off, 33–68 Ω is recommended; values below 33 Ω increase dI/dt stress, while above 100 Ω degrades switching speed and efficiency.
Does STC03DE150 require a negative gate voltage for turn-off?
No. STC03DE150 uses a unipolar gate drive: 0 V turns off the MOSFET section, cutting base drive to the bipolar transistor. A negative gate voltage is unnecessary and not specified in absolute maximum ratings, which allow only 0 to +10 V for reliable turn-on and 0 V for turn-off.
Can STC03DE150 replace a standard IGBT in an existing auxiliary SMPS?
Not directly. Its TO-247-4L pinout differs (dedicated base terminal), gate drive timing is faster, and VCS(ON) behavior is nonlinear versus IGBT VCE(sat). Layout, gate driver strength, and protection circuitry must be revalidated-especially for RBSOA compliance and base current sensing.
Is STC03DE150 still in active production?
No. The datasheet explicitly marks STC03DE150 as "Obsolete Product(s)" in Rev. 2 (October 2004). Aetrix Electronics maintains limited legacy stock for design continuity and repair; new designs should consider ST's newer ESBT variants or qualified alternatives with updated support.
STC03DE150 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-247-4
- Packaging:
- Tube
- Product Status:
- Obsolete
- Transistor Type:
- NPN - Emitter Switched Bipolar
- Applications:
- -
- Voltage - Rated:
- 1500V (1.5kV)
- Current Rating (Amps):
- 3A
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-247-4L
STC03DE150 FAQ
1.How can I place an order for STC03DE150 through Aetrix?
Please submit a Request for Quotation (RFQ) for STC03DE150 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 STC03DE150 reliable?
The price and inventory of STC03DE150 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STC03DE150 is usually 5 days.
3.What payment methods are accepted for STC03DE150?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STC03DE150 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STC03DE150?
STC03DE150 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STC03DE150 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 STC03DE150?
For technical support, including STC03DE150 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STC03DE150 requirements.
6.How does Aetrix verify that STC03DE150 is sourced from the original manufacturer or authorized distributors?
All STC03DE150 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 STC03DE150 meets industry standards.
7.What is the process for return or replacement of STC03DE150?
All STC03DE150 units undergo pre-shipment inspection (PSI). If there is an issue with STC03DE150, 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 STC03DE150 part is unused and in its original packaging.
Return procedure for STC03DE150:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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