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STMicroelectronics X00619MA2AL2
,TO-226_straightlead.jpg)
- Part No.:
- X00619MA2AL2
- Manufacturer:
- STMicroelectronics
- Category:
- SCRs
- Package:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Datasheet:
-
X00619MA2AL2.pdf
- Description:
- SCR 600V 800MA TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:8,555
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Product details
Overview
X00619MA2AL2 from STMicroelectronics is a sensitive-gate silicon-controlled rectifier (SCR) in TO-92 preformed leads package, rated for 0.8 A RMS on-state current and 600 V repetitive peak off-state voltage, with gate trigger current spanning 30–200 µA; it serves as a robust, low-power latching switch in crowbar protection circuits and electronic ballast control.
For engineers reviewing the X00619MA2AL2 datasheet, X00619MA2AL2 pinout, X00619MA2AL2 application, or X00619MA2AL2 equivalent, key selection criteria include its ultra-low IGT range, high dV/dt immunity (≥40 V/µs at 125 °C), junction temperature limit of 125 °C, and ECOPACK2-compliant TO-92 preform packaging for automated assembly.
Technical Context
The X00619MA2AL2 operates as a unidirectional thyristor requiring minimal gate drive-enabling reliable triggering even in topologies with limited gate current availability. Its design emphasizes low forward voltage drop (VTM ≤ 1.35 V at 1 A, 25 °C) and high inrush current tolerance (ITSM = 9 A for 10 ms).
Thermal performance is defined by Rth(j-l) = 70 °C/W (TO-92), supporting stable operation up to Tj = 125 °C. Gate sensitivity is thermally compensated: IGT increases only ~1.6× from 25 °C to 125 °C, while holding current IH remains ≤5 mA across the full operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 0.8 A - Sustains continuous AC load current in mains-frequency switching applications without heatsinking under TL = 83 °C. |
| VDRM / VRRM | 600 V - Blocks line transients up to 600 V peak in 230 VAC systems with margin for surge events. |
| IGT Range | 30–200 µA - Enables direct drive from microcontroller GPIO or low-current optocouplers without external amplification. |
| dV/dt (min) | 40 V/µs at 125 °C - Resists false triggering from fast-rising noise in noisy industrial environments. |
| VTM (max) | 1.35 V at 1 A, 25 °C - Limits conduction loss to <1.35 W per pulse, reducing thermal stress in intermittent duty cycles. |
| Tj(max) | 125 °C - Specifies maximum junction temperature for derated IT(AV) and long-term reliability in sealed enclosures. |
| Rth(j-l) | 70 °C/W - Defines thermal path efficiency from die to leads; enables estimation of power dissipation limits in lead-mounted layouts. |
Pinout & Package
Package: TO-92 with preformed leads (bent at 30°–50° angle), lead-free plating, halogen-free molding compound, UL94 V0 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Main current entry terminal during conduction | Connected to positive side of AC line or DC bus; must withstand full VDRM and ITSM stresses. |
| Cathode (K) | Main current exit terminal and reference node for gate | Common return path; gate-cathode resistance (RGK) directly affects dV/dt immunity and IH stability. |
| Gate (G) | Control input for turn-on initiation | Sensitive input requiring ≤200 µA to trigger; polarity-sensitive (positive w.r.t. cathode); no reverse rating. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low gate trigger current | 30–200 µA enables direct MCU/optocoupler drive without buffer stages, reducing BOM count and layout area. |
| High dV/dt immunity | ≥40 V/µs at 125 °C ensures noise-immune operation in EMI-heavy environments like motor drives and lighting ballasts. |
| Optimized forward conduction | VTM ≤ 1.35 V and Rd ≤ 245 mΩ minimize power loss and self-heating during sustained conduction. |
| ECOPACK2 compliance | Lead-free plating + halogen-free resin meets RoHS 2011/65/EU and REACH SVHC requirements for global market access. |
Applications
| Ground Fault Circuit Interrupter (GFCI) | Electronic Ballast Protection |
|---|---|
|
Use Scenario: Detects leakage current imbalance and triggers immediate AC line disconnection within milliseconds. IC Role / Device Role / Timing Role: Latching crowbar switch that shorts line-to-neutral upon fault detection signal from comparator circuitry. Use Value: Low IGT allows direct drive from low-power fault-detection ICs; high ITSM handles arc-quenching energy without failure. |
Use Scenario: Protects fluorescent lamp ballast circuitry from overvoltage during lamp ignition or end-of-life failure. IC Role / Device Role / Timing Role: Voltage-triggered shunt device activated when transient exceeds VDRM threshold via RC network. Use Value: High dV/dt immunity prevents spurious triggering from lamp-strike noise; TO-92 form factor fits compact ballast PCBs. |
| Capacitive Discharge Ignition (CDI) | Oven/Ignitor Control |
|
Use Scenario: Releases stored capacitor energy through ignition coil to generate high-voltage spark in small engines. IC Role / Device Role / Timing Role: Precision-timed switch triggered by microcontroller pulse to discharge primary capacitor into coil. Use Value: Fast, repeatable turn-on with sub-200 µA gate drive enables precise spark timing; 600 V rating accommodates flyback spikes. |
Use Scenario: Controls gas valve solenoid or glow-bar heater in residential/commercial ovens and cooktops. IC Role / Device Role / Timing Role: Zero-crossing–triggered AC switch providing safe, low-EPI (electromagnetic interference) power delivery. Use Value: Low VT and high reliability at 125 °C junction temperature ensure consistent operation in thermally constrained appliance enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SCR switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STX00619MA1AA2 | Same die, TO-92 straight leads (not preformed); Rth(j-l) identical; identical electrical specs. | Requires manual bending or wave-solder tooling; unsuitable for pick-and-place automation. | Select when hand-assembly or legacy board designs demand straight-lead geometry. |
| STX00619MN5AL2 | SOT-223 package; lower Rth(j-c) = 30 °C/W; same IGT/VDRM/IT(RMS); 0.12 g weight. | Better thermal performance in high-duty-cycle applications; requires different footprint and reflow profile. | Select when higher power dissipation or automated SMT assembly is required. |
Compared with X00619MA2AL2, the straight-lead variant trades assembly compatibility for identical thermal/electrical behavior, while the SOT-223 version improves thermal management at the cost of layout redesign and soldering process change.
Availability
X00619MA2AL2 is available at Aetrix Electronics and suitable for ground fault interruption, electronic ballast protection, capacitive discharge ignition, and oven ignitor control requiring stable component supply across production lifecycles.
Supply support for X00619MA2AL2 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 for automotive, industrial, and consumer markets.
The X00619 belongs to ST's sensitive-gate SCR product line, engineered specifically for low-power, high-noise immunity AC switching in safety-critical and thermally constrained applications.
FAQ
What is the maximum allowable gate-cathode resistance for reliable triggering?
The datasheet specifies that RGK = 1 kΩ is the reference condition for IGT and dV/dt testing. At RGK = 10 kΩ, IGT increases ~2.5× and dV/dt immunity drops ~10×. For guaranteed turn-on across temperature, keep RGK ≤ 1 kΩ; values >3.3 kΩ require validation with worst-case IGT and dV/dt margins.
Can X00619MA2AL2 be used in zero-crossing switch applications?
No-it is not a zero-crossing device. The X00619MA2AL2 triggers immediately upon gate signal and conducts until current falls below IH. For zero-crossing operation, a dedicated zero-crossing TRIAC (e.g., ST's BT134 series) or external zero-crossing detection circuit is required.
Is thermal pad connection required for TO-92 preform package?
No thermal pad is present in the TO-92 preform package. Heat transfer occurs solely through the leads. To maximize power handling, mount leads directly to wide copper pours (>5 cm²) or use short, thick traces to minimize Rth(j-a); ambient derating curves assume free-air convection.
Does X00619MA2AL2 support bidirectional current flow?
No. It is a unidirectional SCR: current flows only from anode to cathode when triggered. Reverse conduction is blocked up to VRRM = 600 V. For bidirectional AC switching, a TRIAC or back-to-back SCR configuration is necessary.
X00619MA2AL2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Voltage - Off State:
- 600 V
- Voltage - Gate Trigger (Vgt) (Max):
- 800 mV
- Current - Gate Trigger (Igt) (Max):
- 200 µA
- Voltage - On State (Vtm) (Max):
- 1.35 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):
- 1 µA
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 9A, 10A
- SCR Type:
- Sensitive Gate
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
X00619MA2AL2 FAQ
1.How can I place an order for X00619MA2AL2 through Aetrix?
Please submit a Request for Quotation (RFQ) for X00619MA2AL2 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 X00619MA2AL2 reliable?
The price and inventory of X00619MA2AL2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X00619MA2AL2 is usually 5 days.
3.What payment methods are accepted for X00619MA2AL2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X00619MA2AL2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X00619MA2AL2?
X00619MA2AL2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X00619MA2AL2 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 X00619MA2AL2?
For technical support, including X00619MA2AL2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X00619MA2AL2 requirements.
6.How does Aetrix verify that X00619MA2AL2 is sourced from the original manufacturer or authorized distributors?
All X00619MA2AL2 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 X00619MA2AL2 meets industry standards.
7.What is the process for return or replacement of X00619MA2AL2?
All X00619MA2AL2 units undergo pre-shipment inspection (PSI). If there is an issue with X00619MA2AL2, 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 X00619MA2AL2 part is unused and in its original packaging.
Return procedure for X00619MA2AL2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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