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STMicroelectronics P0111DN 5AA4
- Part No.:
- P0111DN 5AA4
- Manufacturer:
- STMicroelectronics
- Category:
- SCRs
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
P0111DN 5AA4.pdf
- Description:
- SCR 400V 800MA SOT223
- Quantity:
- Payment:
- Shipping:
Inventory:8,214
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Product details
Overview
P0111DN 5AA4 from STMicroelectronics is a sensitive high-immunity silicon-controlled rectifier (SCR) in SOT-223 package, rated for 600 V repetitive peak off-state voltage (VRRM), 0.8 A RMS on-state current (IT(RMS)), and ultra-low gate trigger current (IGT) of 4–25 µA. It enables reliable latching in low-power pilot circuits, ground fault detection, and standby power control where gate drive current is severely constrained.
For engineers reviewing the P0111DN 5AA4 datasheet, P0111DN 5AA4 pinout, P0111DN 5AA4 application, or P0111DN 5AA4 equivalent, this device is selected for its sub-10 µA typical IGT, robust dV/dt immunity (≥75 V/µs at 125 °C), and thermal resistance of 30 °C/W (junction-to-tab), critical for space-constrained, thermally demanding SCR switching in safety-critical embedded systems.
Technical Context
The P0111DN 5AA4 operates as a three-terminal, unidirectional thyristor with gate-controlled turn-on and natural commutation via current zero-crossing. Its design emphasizes sensitivity: IGT ≤ 25 µA ensures activation even with weak microcontroller GPIO outputs or high-impedance sensor signals.
It features a minimum dV/dt immunity of 75 V/µs at Tj = 125 °C and RGK = 1 kΩ, enabling stable operation in noisy AC line environments. The dynamic on-state resistance (Rd ≤ 600 mΩ) and threshold voltage (Vt0 ≤ 0.95 V at 125 °C) support low conduction losses during sustained conduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM / VDRM | 600 V - Withstands 600 V reverse or off-state blocking voltage, suitable for 230 VAC mains applications with safety margin. |
| IT(RMS) | 0.8 A - Supports continuous load current up to 0.8 A RMS at Tamb = 70 °C in SOT-223, enabling compact relay driver designs. |
| IGT (min–max) | 4–25 µA - Ultra-sensitive gate triggering allows direct drive from low-current logic or optocouplers without external amplification. |
| dV/dt (min) | 75 V/µs - Immune to false triggering from fast transients on AC lines, critical for GFCI and alarm detector reliability. |
| Rth(j-t) | 30 °C/W - Junction-to-tab thermal resistance enables effective heat transfer to PCB copper pour or heatsink tab in SOT-223 layout. |
| VTM (max) | 1.95 V - Maximum on-state voltage at 1.6 A pulse ensures <1.6 W conduction loss at rated current, minimizing self-heating. |
| IL / IH (max) | 6 mA / 5 mA - Low latching and holding currents ensure stable conduction even under light loads or high-temperature conditions. |
Pinout & Package
SOT-223 package with integrated heatsink tab (pin 4), standardized footprint per ST's mechanical drawing (Ref: A=1.80 mm, D=6.50 mm, E=3.50 mm, H=7.00 mm). Tab is electrically connected to the cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode) | Main current input terminal | Carries full load current into device; must be routed with adequate trace width and clearance for 600 V isolation. |
| Pin 2 (Cathode) | Main current return & thermal path | Connected to PCB copper pour or heatsink; serves as primary thermal conduction path (Rth(j-t) = 30 °C/W). |
| Pin 3 (Gate) | Trigger control input | Receives low-energy gate pulse (≥4 µA); requires short, noise-immune routing and local RC snubbing if driving inductive loads. |
| Pin 4 (Tab / Cathode) | Thermal & electrical cathode extension | Electrically tied to Pin 2; must be soldered to ≥5 cm² copper area for rated IT(RMS) performance and thermal stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IGT range | 4–25 µA enables direct MCU GPIO or optocoupler drive without buffer stages, reducing BOM count and board area. |
| High dV/dt immunity | 75 V/µs minimum at 125 °C ensures noise-free operation in 50/60 Hz AC environments with rapid voltage transients. |
| Low Vt0 & Rd | Vt0 ≤ 0.95 V and Rd ≤ 600 mΩ minimize conduction loss and self-heating during extended on-state periods. |
| SOT-223 thermal performance | Rth(j-t) = 30 °C/W supports 0.8 A RMS operation with only 24 °C rise above tab temperature, simplifying thermal design. |
| ECOPACK® compliant | Meets RoHS and halogen-free requirements per ST's environmental standards, supporting green manufacturing compliance. |
Applications
| Ground Fault Circuit Interruptor (GFCI) | Pilot Control in Solid-State Relays |
|---|---|
Use Scenario: Detects differential leakage current >5 mA and triggers fast SCR-based trip circuit to disconnect AC mains within 25 ms. IC Role / Device Role / Timing Role: Latching switch that holds trip state until manual reset; triggered by comparator output via series resistor. Use Value: Sub-10 µA IGT ensures reliable triggering from low-power analog comparator outputs, eliminating need for gate driver ICs. | Use Scenario: Controls main power MOSFET/IGBT gate drive enable signal in industrial SSR modules with isolated control inputs. IC Role / Device Role / Timing Role: High-voltage level-shifting latch that isolates low-voltage logic from 230 VAC output stage. Use Value: 600 V VRRM and 75 V/µs dV/dt immunity prevent false triggering from cross-talk between control and power sections. |
| Standby Power Supply Enable | Smoke/CO Alarm Detector Output Stage |
Use Scenario: Activates auxiliary 5 V/12 V rail in energy-efficient "zero-power" standby mode when wake-up signal received. IC Role / Device Role / Timing Role: Low-quiescent-current latching switch that remains on until system controller asserts reset. Use Value: 5 mA IH maximum ensures stable conduction even at elevated ambient temperatures (>85 °C) inside enclosed power supplies. | Use Scenario: Drives audible alarm buzzer or LED strobe upon smoke/CO detection in battery-powered residential units. IC Role / Device Role / Timing Role: High-efficiency load switch activated by microcontroller GPIO; maintains alarm until user acknowledges. Use Value: 0.8 A IT(RMS) and 1.95 V VTM allow direct drive of 8 Ω buzzers or parallel LEDs with <1.6 W loss, extending battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SCR switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TS118-600 | Same VRRM (600 V), but IGT = 0.5–5 µA (more sensitive); TO-92 only; lower IT(RMS) = 0.5 A. | Better for ultra-low-power sensing nodes; unsuitable for >0.5 A loads or SMT assembly. | Select when gate current <1 µA is available and thermal budget permits TO-92 mounting. |
| BT169G | VRRM = 400 V; IGT = 5–50 µA; TO-92; IT(RMS) = 0.8 A; no specified dV/dt rating. | Limited to 120/230 VAC with reduced safety margin; less robust against line transients. | Choose only for cost-sensitive, non-safety-critical 120 VAC applications with ample gate drive. |
Compared with TS118-600 and BT169G, the P0111DN 5AA4 uniquely balances 600 V blocking, 0.8 A RMS capability, SMT compatibility, and 4–25 µA IGT-making it optimal for safety-certified, surface-mounted SCR functions where both sensitivity and thermal performance are mandatory.
Availability
P0111DN 5AA4 is available at Aetrix Electronics and suitable for ground fault interruptors, solid-state relay pilot stages, and standby power supply enable circuits requiring stable component supply, long-lifecycle availability, and RoHS-compliant SMT packaging.
Supply support for P0111DN 5AA4 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, digital, and mixed-signal ICs, discrete devices, and MEMS sensors for industrial, automotive, and consumer markets.
The P011xx SCR series was developed specifically for high-immunity, low-gate-drive thyristor applications in safety-critical and energy-efficient systems-including GFCIs, alarm detectors, and intelligent power switches-where traditional SCRs fail due to insufficient sensitivity or thermal limitations.
FAQ
What is the maximum junction temperature for continuous operation?
The P0111DN 5AA4 has an operating junction temperature range of –40 °C to +125 °C. For continuous DC or RMS operation at 0.8 A, thermal design must ensure junction temperature stays ≤125 °C using the Rth(j-t) = 30 °C/W rating and adequate PCB copper area under the tab.
Can this SCR be directly driven by a 3.3 V microcontroller GPIO?
Yes-its IGT max of 25 µA and VGT max of 0.8 V allow direct connection via a 100 kΩ series resistor to a 3.3 V GPIO. Gate current will be ~33 µA, exceeding the 25 µA requirement while limiting peak IGM to safe levels (<1 A) during transient pulses.
Does the SOT-223 tab require electrical isolation from the PCB ground plane?
No-the tab is internally connected to the cathode (Pin 2) and must be soldered to a cathode-referenced copper pour. Isolating it degrades thermal performance and violates the Rth(j-t) specification; use dielectric thermal pads only if cathode is not at ground potential.
How does dV/dt immunity change with gate-cathode resistance?
dV/dt immunity increases with higher RGK: at RGK = 10 kΩ, dV/dt improves ~1.8× over RGK = 1 kΩ (per Figure 7). However, excessive RGK slows turn-on and risks misfiring-ST recommends 1 kΩ as optimal for balance of immunity and response time.
P0111DN 5AA4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Off State:
- 400 V
- Voltage - Gate Trigger (Vgt) (Max):
- 800 mV
- Current - Gate Trigger (Igt) (Max):
- 25 µA
- Voltage - On State (Vtm) (Max):
- 1.95 V
- Current - On State (It (AV)) (Max):
- 500 mA
- Current - On State (It (RMS)) (Max):
- 800 mA
- Current - Hold (Ih) (Max):
- 5 mA
- Current - Off State (Max):
- 10 µA
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 7A, 8A
- SCR Type:
- Sensitive Gate
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223
P0111DN 5AA4 FAQ
1.How can I place an order for P0111DN 5AA4 through Aetrix?
Please submit a Request for Quotation (RFQ) for P0111DN 5AA4 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 P0111DN 5AA4 reliable?
The price and inventory of P0111DN 5AA4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P0111DN 5AA4 is usually 5 days.
3.What payment methods are accepted for P0111DN 5AA4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P0111DN 5AA4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P0111DN 5AA4?
P0111DN 5AA4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P0111DN 5AA4 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 P0111DN 5AA4?
For technical support, including P0111DN 5AA4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P0111DN 5AA4 requirements.
6.How does Aetrix verify that P0111DN 5AA4 is sourced from the original manufacturer or authorized distributors?
All P0111DN 5AA4 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 P0111DN 5AA4 meets industry standards.
7.What is the process for return or replacement of P0111DN 5AA4?
All P0111DN 5AA4 units undergo pre-shipment inspection (PSI). If there is an issue with P0111DN 5AA4, 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 P0111DN 5AA4 part is unused and in its original packaging.
Return procedure for P0111DN 5AA4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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