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STMicroelectronics P0102DA 1AA3
,TO-226_straightlead.jpg)
- Part No.:
- P0102DA 1AA3
- Manufacturer:
- STMicroelectronics
- Category:
- SCRs
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
P0102DA 1AA3.pdf
- Description:
- SCR 400V 800MA TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,534
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Product details
Overview
P0102DA 1AA3 from STMicroelectronics is a sensitive 0.8 A RMS SCR thyristor in SOT-223 package, rated for 600 V repetitive peak off-state voltage (VDRM/VRRM), 0.2 mA maximum gate trigger current (IGT), and 125 °C maximum junction temperature. It serves as a low-power gate driver for larger thyristors and overvoltage crowbar protection in standby power supplies.
For engineers reviewing the P0102DA 1AA3 datasheet, P0102DA 1AA3 pinout, P0102DA 1AA3 application, or P0102DA 1AA3 equivalent, key selection criteria include gate sensitivity (≤200 µA), dV/dt immunity (≥75 V/µs at Tj = 125 °C), holding current (≤5 mA), on-state voltage (≤1.95 V @ 1.6 A), and thermal resistance (Rth(j-t) = 30 °C/W).
Technical Context
This SCR operates with highly sensitive gate triggering-requiring only 200 µA IGT and 0.8 V VGT-enabling direct drive from low-current microcontrollers or optocouplers. Its 600 V blocking capability and 75 V/µs dV/dt rating support reliable operation in noisy AC line protection circuits.
The device uses a planar passivated silicon structure optimized for stable latching and holding behavior across -40 to +125 °C. Thermal design leverages the SOT-223 tab for low Rth(j-t) = 30 °C/W, supporting 0.8 A RMS conduction at 70 °C ambient when mounted on ≥5 cm² copper.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 0.8 A - supports continuous load switching in compact SMD crowbar or sensor interface designs |
| VDRM / VRRM | 600 V - enables use in 230 VAC mains-connected protection circuits with margin |
| IGT (max) | 200 µA - allows direct drive from GPIO or low-power optocouplers without amplification |
| dV/dt (min) | 75 V/µs at Tj = 125 °C - ensures noise immunity in high-dV/dt industrial environments |
| VTM (max) | 1.95 V @ 1.6 A - limits conduction loss and self-heating in sustained on-state operation |
| Rth(j-t) | 30 °C/W - enables efficient heat transfer to PCB copper via exposed tab for thermal reliability |
| IH (max) | 5 mA - guarantees robust turn-off retention under light-load or high-temperature conditions |
Pinout & Package
SOT-223 package with exposed metal tab (pin 4) for thermal and electrical connection to cathode. Standard three-terminal configuration: Anode (pin 1), Cathode (pin 2), Gate (pin 3). Tab is internally connected to Cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (A) | Anode | Main current entry terminal during forward conduction; connects to high-side AC or DC rail |
| Pin 2 (K) | Cathode | Main current exit terminal; electrically tied to exposed tab for thermal path and low-inductance return |
| Pin 3 (G) | Gate | Control input for triggering; requires ≤200 µA to initiate latching at room temperature |
| Tab (K) | Cathode (thermal & electrical) | Provides primary thermal conduction path (Rth(j-t) = 30 °C/W) and low-impedance cathode return |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low gate trigger current | 200 µA max - eliminates need for gate driver stages in battery-powered or energy-harvesting systems |
| High dV/dt immunity | 75 V/µs min at 125 °C - prevents false triggering in EMI-prone motor control or lighting ballast applications |
| ECOPACK®2 compliance | Lead-free, halogen-free, UL94 V0 molding - meets RoHS and environmental requirements for global OEM production |
| Robust thermal performance | Rth(j-t) = 30 °C/W - enables >0.7 A RMS operation at 70 °C ambient using standard FR4 layout with 5 cm² copper |
Applications
| Proximity Sensors | Standby Mode Power Supplies |
|---|---|
Use Scenario: Capacitive or inductive proximity detection circuit where gate current is limited by high-impedance sensing node. IC Role / Device Role / Timing Role: SCR acts as zero-crossing-triggered latch to assert alarm or enable downstream circuitry upon detection. Use Value: 200 µA IGT allows direct interface with high-Z sensor outputs; 600 V rating accommodates transient surges on unregulated supply rails. | Use Scenario: Mains-connected auxiliary supply that must remain inactive until wake-up signal arrives, then rapidly energize main converter. IC Role / Device Role / Timing Role: Crowbar element triggered by supervisor IC to short AC input and force shutdown during fault or deep sleep. Use Value: Fast latching (IL ≤ 6 mA) and low VTM ensure rapid, low-loss crowbar action; SOT-223 footprint enables compact placement near bridge rectifier. |
| Ground Fault Circuit Interrupters | Arc Fault Circuit Interrupters |
Use Scenario: Residual current detection system requiring fast, reliable tripping of AC line upon leakage detection. IC Role / Device Role / Timing Role: High-voltage switch activated by differential amplifier output to disconnect live conductor within <10 ms. Use Value: 600 V VDRM withstands full AC peak voltage; 75 V/µs dV/dt prevents nuisance trips from switching transients in shared branch circuits. | Use Scenario: Branch-circuit monitoring system detecting high-frequency current anomalies indicative of arcing faults. IC Role / Device Role / Timing Role: Final-stage isolation switch that opens AC path after arc signature validation by MCU or analog comparator. Use Value: Low IH (≤5 mA) ensures stable hold-on during normal operation; high ITSM (8 A @ 8.3 ms) tolerates brief inrush without failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SCR gate-driving and crowbar protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STP0102MN | Same die, TO-92 package; higher Rth(j-a) = 100 °C/W; no thermal tab | Better suited for through-hole prototyping or low-volume manual assembly; less suitable for automated SMT or thermally constrained layouts | Select when board space permits through-hole mounting and thermal budget allows higher junction rise |
| Littelfuse S4006L | 600 V VDRM, but IGT = 5 mA (25× higher); TO-220 package; higher IT(RMS) = 4 A | Requires gate amplification; intended for high-current crowbar, not low-IG sensor interfaces | Choose only when gate drive capability exceeds 5 mA and thermal mass supports TO-220 mounting |
Compared with STP0102MN and S4006L, P0102DA 1AA3 uniquely balances ultra-low gate sensitivity, SMT compatibility, and thermal efficiency-making it optimal for space-constrained, low-power crowbar and sensor-latch functions where gate current is inherently limited.
Availability
P0102DA 1AA3 is available at Aetrix Electronics and suitable for ground fault interrupters, arc fault detectors, proximity sensor modules, and standby-mode power supplies requiring stable component supply and long-term manufacturability.
Supply support for P0102DA 1AA3 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, MCU, and sensor solutions for automotive, industrial, and consumer markets.
P0102DA 1AA3 belongs to ST's sensitive SCR family engineered specifically for low-gate-drive, high-reliability protection and interface applications-including crowbar circuits, solid-state relays, and fault-responsive power control.
FAQ
What is the maximum allowable gate-cathode resistance for reliable triggering?
The datasheet specifies that IGT remains ≤200 µA with RGK = 1 kΩ at 25 °C. At 125 °C, IGT rises to ~350 µA. For guaranteed turn-on across temperature, RGK should not exceed 1 kΩ; lower values (e.g., 470 Ω) improve noise immunity and reduce trigger delay.
Can P0102DA 1AA3 be used in 115 VAC applications?
Yes. With 600 V VDRM, it provides >2.6× safety margin over 115 VAC peak (162 V), and its 75 V/µs dV/dt rating exceeds typical line transients. Derating is recommended for sustained high-temperature operation above 85 °C ambient.
Is the SOT-223 tab electrically isolated?
No. The metal tab is internally connected to the cathode (pin 2). It must be routed to the same net as the cathode on the PCB and may serve as the primary thermal path. Isolation requires external insulation or non-conductive mounting hardware.
Does P0102DA 1AA3 support bidirectional current flow?
No. It is a unidirectional SCR (thyristor) and conducts only from anode to cathode when triggered. For AC line control requiring bidirectional blocking, two SCRs in inverse-parallel or a TRIAC would be required.
P0102DA 1AA3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Off State:
- 400 V
- Voltage - Gate Trigger (Vgt) (Max):
- 800 mV
- Current - Gate Trigger (Igt) (Max):
- 200 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:
- Through Hole
- Supplier Device Package:
- TO-92-3
P0102DA 1AA3 FAQ
1.How can I place an order for P0102DA 1AA3 through Aetrix?
Please submit a Request for Quotation (RFQ) for P0102DA 1AA3 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 P0102DA 1AA3 reliable?
The price and inventory of P0102DA 1AA3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P0102DA 1AA3 is usually 5 days.
3.What payment methods are accepted for P0102DA 1AA3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P0102DA 1AA3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P0102DA 1AA3?
P0102DA 1AA3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P0102DA 1AA3 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 P0102DA 1AA3?
For technical support, including P0102DA 1AA3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P0102DA 1AA3 requirements.
6.How does Aetrix verify that P0102DA 1AA3 is sourced from the original manufacturer or authorized distributors?
All P0102DA 1AA3 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 P0102DA 1AA3 meets industry standards.
7.What is the process for return or replacement of P0102DA 1AA3?
All P0102DA 1AA3 units undergo pre-shipment inspection (PSI). If there is an issue with P0102DA 1AA3, 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 P0102DA 1AA3 part is unused and in its original packaging.
Return procedure for P0102DA 1AA3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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