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Renesas 3P4MH(AY)-AZ
- Part No.:
- 3P4MH(AY)-AZ
- Manufacturer:
- Renesas
- Category:
- SCRs
- Package:
- -
- Datasheet:
-
3P4MH(AY)-AZ.pdf
- Description:
- SILICON CONTROLLED RECTIFIER
- Quantity:
- Payment:
- Shipping:
Inventory:174
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Product details
Overview
3P4MH(AY)-AZ from Renesas Electronics is a 3 A average on-state current, 400 V repetitive peak off-state voltage silicon-controlled rectifier (SCR) in a TO-202AA molded package. It features 1.6 V maximum on-state voltage at 10 A, 0.2 mA gate trigger current, and 80 µs commutating turn-off time at 125°C. It is used in noncontact switching circuits for consumer electronics and light industrial equipment.
For engineers reviewing the 3P4MH(AY)-AZ datasheet, 3P4MH(AY)-AZ pinout, 3P4MH(AY)-AZ application, or 3P4MH(AY)-AZ equivalent, key selection criteria include its 400 V VDRM rating, 3 A IT(AV) at Tc = 87°C, gate sensitivity (VGT ≤ 0.8 V), thermal resistance (Rth(j-c) = 8 °C/W), and UL94V-0 flame-retardant epoxy encapsulation.
Technical Context
The 3P4MH(AY)-AZ is a P-gate, fully diffused mold SCR designed for phase-control and AC switching applications. Its gate trigger characteristics (IGT ≤ 0.2 mA, VGT ≤ 0.8 V) enable reliable low-power triggering, while its dV/dt immunity of ≥3 V/µs at 125°C supports stable operation in noisy line-voltage environments.
It operates with a junction temperature range of −40°C to +125°C and exhibits a holding current (IH) of 1–5 mA at 24 V. The device's fusing ∫i²t rating of 20 A²s (1–10 ms) and surge current capability of 65 A (50 Hz, half-wave) support robust transient handling in mains-connected loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDRM / VRRM | 400 V - Maximum repetitive off-state voltage before conduction; defines safe AC line voltage blocking capability. |
| IT(AV) | 3 A at Tc = 87°C - Average on-state current under specified heatsink conditions; determines continuous load-handling capacity. |
| VTM | ≤1.6 V at IT = 10 A - On-state voltage drop; directly impacts conduction loss and thermal design. |
| IGT / VGT | ≤0.2 mA / ≤0.8 V - Gate trigger sensitivity; enables direct drive from low-power logic or optocouplers without amplification. |
| Tq | ≤80 µs - Commutating turn-off time at 125°C; critical for forced-commutation circuits and high-frequency phase control. |
| Rth(j-c) | 8 °C/W - Junction-to-case thermal resistance; enables accurate heatsink sizing for thermal management. |
| dV/dt | ≥3 V/µs at 125°C - Minimum rate of rise of off-state voltage before spurious turn-on; sets snubber design requirements. |
Pinout & Package
Package: TO-202AA (standard molded plastic package with integral heat-transfer tab; UL94V-0 rated; weight ≈ 1.4 g).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| <1> Cathode | Current return path during conduction | Primary current sink terminal; electrically connected to heatsink tab in standard mounting. |
| <2> Anode | Main current input terminal | High-side connection point for AC/DC supply; carries full load current when triggered. |
| <3> Gate | Control input for turn-on initiation | Low-energy trigger terminal; requires ≤0.2 mA to initiate conduction under specified conditions. |
Key Features
| Feature | Design Value |
|---|---|
| UL94V-0 flame-retardant epoxy encapsulation | Meets international safety standards for flammability; eliminates need for external fire barriers in end equipment. |
| TO-202AA mechanical form factor | Enables automated lead forming and heatsink mounting using standard jigs; supports high-volume assembly. |
| Low gate trigger power (PGM ≤ 2 W) | Reduces driver circuit complexity and power consumption; compatible with common opto-SCR drivers. |
| High dV/dt immunity (≥3 V/µs) | Minimizes false triggering in EMI-prone environments such as motor drives and dimmer circuits. |
| Standard quality grade | Qualified for use in consumer electronics, office equipment, audio/video systems, and light industrial controls per Renesas classification. |
Applications
| AC Motor Speed Control | Light Dimming Circuit |
|---|---|
Use Scenario: Phase-angle control of universal or induction motors in fans, pumps, and power tools. IC Role / Device Role / Timing Role: Main power switching element that conducts only during selected portions of the AC cycle to regulate average motor voltage. Use Value: Enables smooth, efficient speed regulation with minimal external components due to low IGT and robust dV/dt immunity. | Use Scenario: Leading-edge dimming of incandescent and halogen lamps in residential and commercial lighting. IC Role / Device Role / Timing Role: Bidirectional AC switch triggered by zero-crossing synchronized gate pulses to modulate RMS lamp voltage. Use Value: Delivers flicker-free dimming with <1.6 V conduction loss, reducing thermal stress on PCB traces and heatsinks. |
| Noncontact Appliance Switch | Heater Power Regulation |
Use Scenario: Solid-state replacement for electromechanical relays in coffee makers, rice cookers, and irons. IC Role / Device Role / Timing Role: High-reliability AC load switch activated by microcontroller-driven optocoupler isolation. Use Value: Eliminates contact wear and bounce; supports >10⁶ switching cycles with consistent 3 A IT(AV) performance at 87°C case temperature. | Use Scenario: Duty-cycle controlled heating elements in ovens, soldering stations, and industrial process heaters. IC Role / Device Role / Timing Role: Line-synchronized power regulator that delivers precise thermal output via phase-cut or burst-fire control. Use Value: Maintains stable operation up to 125°C junction temperature with verified 80 µs Tq for fast commutation in burst-mode designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SCR switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics TS3A40 | 400 V VDRM, 3 A IT(AV), but TO-220AB package; higher Rth(j-c) = 10 °C/W; IGT = 10 mA (higher gate drive requirement). | Requires larger heatsink or lower ambient; less suitable for space-constrained TO-202AA layouts. | Select when TO-220AB mounting is already standardized and gate drive margin is available. |
| ON Semiconductor 2N6504 | 400 V VDRM, 4 A IT(AV), TO-220 package; IGT = 50 mA; no UL94V-0 certification stated in datasheet. | Higher current rating but significantly higher gate power demand; lacks documented flame-retardant compliance. | Prefer for higher-current legacy designs where gate drive capability exists and safety certification is not mandated. |
Compared with STMicroelectronics TS3A40 and ON Semiconductor 2N6504, the 3P4MH(AY)-AZ offers superior gate sensitivity (0.2 mA vs. ≥50 mA), lower thermal resistance (8 vs. ≥10 °C/W), and certified UL94V-0 packaging-making it optimal for compact, low-power, safety-compliant AC switching in consumer-grade products.
Availability
3P4MH(AY)-AZ is available at Aetrix Electronics and suitable for AC motor speed control, light dimming circuits, and noncontact appliance switching requiring stable component supply and long-term manufacturing continuity.
Supply support for 3P4MH(AY)-AZ 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
Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and consumer applications.
The 3P4MH(AY)-AZ belongs to Renesas' legacy thyristor product line, designed specifically for cost-sensitive, reliability-focused AC power control in standard-grade consumer and light industrial equipment.
FAQ
What is the maximum junction temperature rating for the 3P4MH(AY)-AZ?
The 3P4MH(AY)-AZ has a specified junction temperature range of −40°C to +125°C. This rating is validated per Renesas' absolute maximum ratings table and applies under all operating conditions including surge events. Thermal design must ensure the junction does not exceed +125°C, using the published Rth(j-c) = 8 °C/W and actual case temperature measurements. The 3P4MH(AY)-AZ must be mounted to an appropriate heatsink to maintain this limit during 3 A average conduction.
Is the 3P4MH(AY)-AZ RoHS compliant?
Yes, the 3P4MH(AY)-AZ complies with the EU RoHS Directive. Renesas Electronics confirms RoHS compliance for this device in its official environmental documentation, and the part is manufactured without lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE). Aetrix Electronics provides full material declarations and RoHS certificates upon request for the 3P4MH(AY)-AZ.
Can the 3P4MH(AY)-AZ replace the 3P6MH in a 400 V design?
No-the 3P6MH is rated for 600 V VDRM/VRRM, while the 3P4MH(AY)-AZ is rated for 400 V. Substituting the 3P4MH(AY)-AZ in a design originally specifying the 3P6MH risks premature breakdown if line transients exceed 400 V. The 3P4MH(AY)-AZ is not a drop-in replacement for the 3P6MH; voltage derating margins and transient protection must be re-evaluated. Always verify system-level voltage stress before substituting the 3P4MH(AY)-AZ.
What is the gate non-trigger voltage (VGD) specification for the 3P4MH(AY)-AZ?
The gate non-trigger voltage (VGD) for the 3P4MH(AY)-AZ is specified as 0.2 V minimum at Tj = 125°C and VDM = VDRM. This parameter ensures the device remains reliably blocked even under high-temperature, high-voltage stress when no gate signal is applied. It reflects the SCR's noise immunity and is critical for stable operation in hot, high-dV/dt environments. The 3P4MH(AY)-AZ meets this spec across its full qualified temperature range.
Does the 3P4MH(AY)-AZ require a snubber circuit in typical AC switching applications?
A snubber circuit is recommended for the 3P4MH(AY)-AZ when switching inductive loads or in environments with high line transients, due to its dV/dt rating of ≥3 V/µs at 125°C. While the 3P4MH(AY)-AZ can operate without a snubber in resistive loads with clean AC waveforms, Renesas' application guidance specifies RC snubbers to suppress voltage spikes and prevent false triggering. Designers should calculate snubber values based on load L/R, line frequency, and measured dV/dt stress-not assume snubber-free operation for the 3P4MH(AY)-AZ.
3P4MH(AY)-AZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Off State:
- -
- Voltage - Gate Trigger (Vgt) (Max):
- -
- Current - Gate Trigger (Igt) (Max):
- -
- Voltage - On State (Vtm) (Max):
- -
- Current - On State (It (AV)) (Max):
- -
- Current - On State (It (RMS)) (Max):
- -
- Current - Hold (Ih) (Max):
- -
- Current - Off State (Max):
- -
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- -
- SCR Type:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
3P4MH(AY)-AZ FAQ
1.How can I place an order for 3P4MH(AY)-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for 3P4MH(AY)-AZ 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 3P4MH(AY)-AZ reliable?
The price and inventory of 3P4MH(AY)-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3P4MH(AY)-AZ is usually 5 days.
3.What payment methods are accepted for 3P4MH(AY)-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3P4MH(AY)-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3P4MH(AY)-AZ?
3P4MH(AY)-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3P4MH(AY)-AZ 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 3P4MH(AY)-AZ?
For technical support, including 3P4MH(AY)-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3P4MH(AY)-AZ requirements.
6.How does Aetrix verify that 3P4MH(AY)-AZ is sourced from the original manufacturer or authorized distributors?
All 3P4MH(AY)-AZ 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 3P4MH(AY)-AZ meets industry standards.
7.What is the process for return or replacement of 3P4MH(AY)-AZ?
All 3P4MH(AY)-AZ units undergo pre-shipment inspection (PSI). If there is an issue with 3P4MH(AY)-AZ, 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 3P4MH(AY)-AZ part is unused and in its original packaging.
Return procedure for 3P4MH(AY)-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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