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STMicroelectronics X0402MF 0AA2
- Part No.:
- X0402MF 0AA2
- Manufacturer:
- STMicroelectronics
- Category:
- SCRs
- Package:
- TO-202 No Tab
- Datasheet:
-
X0402MF 0AA2.pdf
- Description:
- SCR 600V 1.35A TO202-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,112
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Product details
Overview
X0402MF from STMicroelectronics is a sensitive-gate 4A RMS silicon-controlled rectifier (SCR) in TO-202-3 package, rated for 600V VDRM/VRRM, with maximum gate trigger current IGT of 200 µA, on-state voltage VTM ≤1.8 V at 8 A, and dV/dt immunity ≥10 V/µs at Tj = 110°C - used in capacitive discharge ignition circuits and low-power overvoltage crowbar protection.
For engineers reviewing the X0402MF datasheet, X0402MF pinout, X0402MF application, or X0402MF equivalent, key selection criteria include gate sensitivity (200 µA), 600V blocking capability, TO-202-3 thermal resistance (Rth(j-l) = 15 °C/W), latching current IL ≥6 mA, and surge rating (ITSM = 33 A, 8.3 ms).
Technical Context
The X0402MF operates as a unidirectional thyristor requiring gate-triggered turn-on and natural commutation via current zero-crossing. Its sensitive gate (IGT ≤200 µA) enables direct drive from low-current sources like RC networks or microcontroller GPIOs with series limiting resistors.
It features robust transient immunity: dV/dt ≥10 V/µs at 110°C and I²t = 4.5 A²s (10 ms), supporting reliable operation in noisy motor control and crowbar circuits where fast voltage transients occur across the anode-cathode terminals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 4 A - supports continuous load current up to 4 A RMS at lead temperature ≤60°C |
| VDRM/VRRM | 600 V - blocks up to 600 V peak reverse or off-state forward voltage |
| IGT | 200 µA max - triggers reliably with sub-0.2 mA gate drive, enabling use with high-impedance sources |
| VTM | ≤1.8 V at 8 A - low conduction loss reduces power dissipation in switching paths |
| dV/dt | ≥10 V/µs at Tj = 110°C - resists false triggering from rapid voltage transients |
| Rth(j-l) | 15 °C/W - enables thermal management via PCB copper pour or heatsink attachment to leads |
| ITSM | 33 A (8.3 ms) - handles short-duration surges common in motor startup or fault conditions |
Pinout & Package
Package: TO-202-3 (plastic, 3-lead, through-hole). Leads are Anode (A), Cathode (K), and Gate (G), with mechanical dimensions per STMicroelectronics mechanical drawing: A = 10.1 mm, D = 10.5 mm, N1 = 2.54 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Main current entry terminal | Connected to positive side of AC line or DC supply; carries full load current during conduction |
| Cathode (K) | Main current exit terminal | Connected to load return path; forms low-impedance conduction path with Anode when triggered |
| Gate (G) | Control input for turn-on | Receives low-energy pulse (≤200 µA) to initiate latching; requires no sustained drive |
Key Features
| Feature | Design Value |
|---|---|
| Sensitive gate trigger | IGT ≤200 µA enables direct drive from microcontrollers or RC timing networks without amplification |
| High dV/dt immunity | ≥10 V/µs at 110°C prevents spurious turn-on in electrically noisy environments like motor drives |
| Low on-state voltage | VTM ≤1.8 V at 8 A minimizes conduction losses and self-heating under load |
| Robust surge rating | ITSM = 33 A (8.3 ms) supports repeated motor startups and transient overload events |
| Thermal performance | Rth(j-l) = 15 °C/W allows effective heat transfer to PCB copper or external heatsink via leads |
Applications
| Capacitive Discharge Ignition (CDI) | Kitchen Appliance Motor Control |
|---|---|
Use Scenario: High-voltage spark generation in small engine ignitions using capacitor discharge into primary winding. IC Role / Device Role / Timing Role: SCR acts as high-speed switch releasing stored capacitor energy into ignition coil primary. Use Value: 200 µA IGT allows triggering directly from low-current timing circuitry; 600V rating withstands coil flyback voltage. | Use Scenario: Speed and direction control of universal motors in blenders, food processors, and mixers. IC Role / Device Role / Timing Role: Phase-angle controlled AC switching to regulate motor power via zero-crossing synchronized gating. Use Value: Low IGT enables compact, low-power gate driver design; TO-202-3 provides mechanical stability in high-vibration environments. |
| Low-Power Crowbar Protection | AC Line Surge Suppression |
Use Scenario: Overvoltage protection in 5–24 V DC power supplies by shorting output to ground upon threshold exceedance. IC Role / Device Role / Timing Role: Latched crowbar device activated by voltage monitor IC or Zener-triggered gate network. Use Value: Fast dV/dt immunity (≥10 V/µs) prevents false triggering during normal supply transients; 33 A ITSM safely clamps surge energy. | Use Scenario: Transient suppression on 120/230 V AC mains inputs in consumer electronics and industrial controls. IC Role / Device Role / Timing Role: Voltage-triggered shunt device that fires during overvoltage events to divert surge current. Use Value: 600V VDRM ensures stable blocking during normal operation; TO-202-3 package supports >1.35 A average current at 25°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SCR-based switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| X0402NF | Same 600V rating and TO-202-3 package, but identical 200 µA IGT - differs only in marking code (F vs N); functionally interchangeable | No functional difference; both intended for same sensitive-gate applications | Select based on distributor stock or marking preference; no electrical or thermal distinction |
| X0405MF | 600V rating and TO-202-3 package, but lower IGT (50 µA max) - higher gate sensitivity, tighter parameter spread | Better suited for ultra-low-drive circuits (e.g., battery-powered sensors), less tolerant of gate leakage | Choose X0405MF only if gate drive is <50 µA; otherwise X0402MF offers wider margin and cost advantage |
Compared with X0402NF, X0402MF offers identical performance; versus X0405MF, it trades 50 µA gate sensitivity for broader noise margin and higher production yield in standard motor control designs.
Availability
X0402MF is available at Aetrix Electronics and suitable for capacitive discharge ignition systems, kitchen appliance motor controllers, and low-power crowbar protection circuits requiring stable component supply and long-term manufacturability.
Supply support for X0402MF 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, designing and manufacturing analog, power, MCU, and sensor solutions for industrial, automotive, and consumer markets.
The X04 Series belongs to ST's high-reliability discrete power portfolio, engineered specifically for cost-sensitive, high-volume AC control applications demanding robust gate sensitivity and surge resilience.
FAQ
What is the maximum junction temperature for continuous operation?
The X0402MF has an operating junction temperature range of –40°C to +125°C. Continuous operation must maintain Tj ≤125°C, achievable with proper heatsinking or PCB copper area given Rth(j-l) = 15 °C/W and Rth(j-a) = 100 °C/W (free air).
Can X0402MF be driven directly from a 3.3 V microcontroller GPIO?
Yes - with appropriate series gate resistor. At 3.3 V, a 15 kΩ resistor limits gate current to ~220 µA, within the 200 µA max IGT specification. Ensure gate-cathode resistance (RGK) remains ≤1 kΩ during triggering for reliable latching.
Is snubber circuitry required for reliable operation?
A snubber is recommended for inductive loads (e.g., motors, transformers) to limit dV/dt stress during turn-off. The X0402MF's 10 V/µs dV/dt rating assumes RGK = 1 kΩ; reducing RGK improves immunity, but snubbers remain best practice for long-term reliability in reactive circuits.
How does X0402MF differ from standard 4A SCRs like BT169D?
Unlike BT169D (IGT ≈ 500 µA), X0402MF offers three times higher gate sensitivity (200 µA max), enabling simpler, lower-power gate drivers. It also features superior dV/dt immunity (10 V/µs vs typical 5–7 V/µs) and tighter parameter consistency across temperature.
X0402MF 0AA2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-202 No Tab
- Packaging:
- Tube
- Product Status:
- Obsolete
- Voltage - Off State:
- 600 V
- Voltage - Gate Trigger (Vgt) (Max):
- 800 mV
- Current - Gate Trigger (Igt) (Max):
- 200 µA
- Voltage - On State (Vtm) (Max):
- 1.8 V
- Current - On State (It (AV)) (Max):
- 900 mA
- Current - On State (It (RMS)) (Max):
- 1.35 A
- Current - Hold (Ih) (Max):
- 5 mA
- Current - Off State (Max):
- 5 µA
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 30A, 33A
- SCR Type:
- Sensitive Gate
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-202-3
X0402MF 0AA2 FAQ
1.How can I place an order for X0402MF 0AA2 through Aetrix?
Please submit a Request for Quotation (RFQ) for X0402MF 0AA2 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 X0402MF 0AA2 reliable?
The price and inventory of X0402MF 0AA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X0402MF 0AA2 is usually 5 days.
3.What payment methods are accepted for X0402MF 0AA2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X0402MF 0AA2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X0402MF 0AA2?
X0402MF 0AA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X0402MF 0AA2 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 X0402MF 0AA2?
For technical support, including X0402MF 0AA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X0402MF 0AA2 requirements.
6.How does Aetrix verify that X0402MF 0AA2 is sourced from the original manufacturer or authorized distributors?
All X0402MF 0AA2 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 X0402MF 0AA2 meets industry standards.
7.What is the process for return or replacement of X0402MF 0AA2?
All X0402MF 0AA2 units undergo pre-shipment inspection (PSI). If there is an issue with X0402MF 0AA2, 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 X0402MF 0AA2 part is unused and in its original packaging.
Return procedure for X0402MF 0AA2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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