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Home > Products > Discrete Semiconductor Products > Thyristors > SCRs

Renesas 3P4MH(11)-AZ

Name: 3P4MH(11)-AZ
Brand: Renesas
SKU: 3P4MH(11)-AZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 3P4MH(11)-AZ

Manufacturer:: Renesas

Category:: SCRs

Package:: TO-202 Long Tab

Datasheet:: 3P4MH(11)-AZ.pdf

Description:: SILICON CONTROLLED RECTIFIER

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Product details

Overview

3P4MH(11)-AZ from Renesas Electronics is a 3 A average on-state current, 400 V repetitive peak off-state voltage (V_DRM) and reverse voltage (V_RRM) silicon-controlled rectifier (SCR) in TO-202AA package, designed for noncontact switching in consumer electronics, audio equipment, and light industrial controls. It features 1.6 V typical on-state voltage at 10 A, 0.2 mA gate trigger current, and 80 µs commutating turn-off time.

For engineers reviewing the 3P4MH(11)-AZ datasheet, 3P4MH(11)-AZ pinout, 3P4MH(11)-AZ application, or 3P4MH(11)-AZ equivalent, key selection criteria include its 400 V blocking rating, 3 A thermal-limited average current (T_c = 87°C), TO-202AA mechanical compatibility, and gate sensitivity under 0.8 V trigger voltage with 100 µA off-state leakage at 25°C.

Technical Context

The 3P4MH(11)-AZ is a P-gate, fully diffused mold SCR optimized for phase-control and AC switching applications requiring reliable latching behavior and moderate surge capability. Its 50 A/µs critical dI/dt rating and 3 V/µs minimum dV/dt at 125°C support stable operation in noisy line-powered environments.

It operates with a 0.2 mA gate trigger current into a 100 Ω load at 6 V anode-cathode bias, enabling direct drive from low-power logic or optocouplers. The device maintains 2 mA maximum reverse/off-state leakage at junction temperature up to 125°C, ensuring predictable turn-off margin in thermally stressed conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DRM/V_RRM	400 V - Maximum repetitive AC voltage the device blocks in forward and reverse directions without conduction
I_T(AV)	3 A at T_c = 87°C - Average on-state current limit defined under single half-wave conduction with 180° conduction angle
V_TM	1.6 V max at I_T = 10 A - On-state voltage drop determining conduction loss and thermal dissipation in steady-state operation
I_GT	0.2 mA max - Minimum gate current required to reliably trigger conduction at 25°C, enabling low-power gate drive design
t_q	80 µs - Commutating turn-off time at 125°C, defining minimum off-time needed before reapplying forward voltage
R_th(j-c)	8 °C/W - Junction-to-case thermal resistance, used to calculate heatsink requirements for continuous 3 A operation
dV/dt	3 V/µs min at 125°C - Minimum rate of rise of off-state voltage the device withstands without false triggering

Pinout & Package

Package: TO-202AA (standard 3-lead molded plastic package, 1.4 g weight, UL94V-0 flame-retardant epoxy).

Pin/Terminal	Circuit Role	Design Meaning
<1> Cathode	Current return path during conduction	Main output terminal; connects to load return or neutral; must be thermally coupled to heatsink via case contact
<2> Anode	Current entry point during conduction	Main input terminal; connects to AC line or DC source; polarity-sensitive for proper SCR operation
<3> Gate	Control electrode for turn-on initiation	Low-energy trigger input; requires ≤0.8 V forward voltage and ≥0.2 mA current to initiate latching

Key Features

Feature	Design Value
TO-202AA package	Compact, lightweight, and mountable on PCB or chassis with standard jigs-enables space-constrained consumer appliance designs
UL94V-0 epoxy resin	Flame-retardant encapsulation meeting safety standards for household and office equipment enclosures
50 A/µs dI/dt rating	Robust immunity to fast-rising load currents, preventing unintended turn-on during inductive switching transients
80 µs t_q at 125°C	Guaranteed commutation window for zero-crossing or phase-angle control circuits operating up to 60 Hz line frequency
2 mA I_RRM/I_DRM max at 125°C	Predictable leakage behavior over full industrial temperature range, supporting stable hold-off in warm ambient environments

Applications

AC Motor Speed Control	Light Dimming Circuit
Use Scenario: Phase-controlled variable-speed drive for universal motors in power tools and kitchen appliances. IC Role / Device Role / Timing Role: Main power switching element triggered synchronously with AC zero-crossing to regulate RMS voltage delivered to motor winding. Use Value: Enables smooth speed adjustment with 3 A continuous current handling and 400 V line-voltage blocking, eliminating need for relay-based staging.	Use Scenario: Leading-edge dimmer for incandescent and halogen lamps in residential lighting fixtures. IC Role / Device Role / Timing Role: Bidirectional AC switch controlled by RC-triggered gate pulse to adjust conduction angle per half-cycle. Use Value: Delivers flicker-free dimming with 0.2 mA gate sensitivity allowing direct drive from passive RC networks, reducing BOM count.
Heater Power Regulation	Noncontact Relay Replacement
Use Scenario: Solid-state power controller for resistive heating elements in coffee makers, rice cookers, and soldering stations. IC Role / Device Role / Timing Role: Line-synchronized on/off switch modulating average power using burst-fire or phase-control techniques. Use Value: Provides silent, wear-free operation with 3 A thermal rating matching typical heater loads and 8 °C/W R_th(j-c) enabling compact heatsinking.	Use Scenario: Electromechanical relay substitute in vending machines, HVAC actuators, and industrial control panels. IC Role / Device Role / Timing Role: Latching high-voltage switch activated by momentary gate signal, holding conduction until current interruption. Use Value: Eliminates contact bounce and arcing with 65 A non-repetitive surge rating (50 Hz), supporting inrush-tolerant switching of solenoids and transformers.

AC Motor Speed Control

Light Dimming Circuit

Use Scenario: Phase-controlled variable-speed drive for universal motors in power tools and kitchen appliances.

IC Role / Device Role / Timing Role: Main power switching element triggered synchronously with AC zero-crossing to regulate RMS voltage delivered to motor winding.

Use Value: Enables smooth speed adjustment with 3 A continuous current handling and 400 V line-voltage blocking, eliminating need for relay-based staging.

Use Scenario: Leading-edge dimmer for incandescent and halogen lamps in residential lighting fixtures.

IC Role / Device Role / Timing Role: Bidirectional AC switch controlled by RC-triggered gate pulse to adjust conduction angle per half-cycle.

Use Value: Delivers flicker-free dimming with 0.2 mA gate sensitivity allowing direct drive from passive RC networks, reducing BOM count.

Heater Power Regulation

Noncontact Relay Replacement

Use Scenario: Solid-state power controller for resistive heating elements in coffee makers, rice cookers, and soldering stations.

IC Role / Device Role / Timing Role: Line-synchronized on/off switch modulating average power using burst-fire or phase-control techniques.

Use Value: Provides silent, wear-free operation with 3 A thermal rating matching typical heater loads and 8 °C/W R_th(j-c) enabling compact heatsinking.

Use Scenario: Electromechanical relay substitute in vending machines, HVAC actuators, and industrial control panels.

IC Role / Device Role / Timing Role: Latching high-voltage switch activated by momentary gate signal, holding conduction until current interruption.

Use Value: Eliminates contact bounce and arcing with 65 A non-repetitive surge rating (50 Hz), supporting inrush-tolerant switching of solenoids and transformers.

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 V_DRM, 3 A I_T(AV), but TO-220AB package (larger footprint, higher R_th(j-c) = 10 °C/W)	Requires PCB layout revision and larger heatsink; suitable where higher surge margin (80 A I_TSM) is prioritized	Select when mechanical mounting flexibility or legacy TO-220 inventory exists; verify gate drive compatibility (I_GT = 15 mA typical)
ON Semiconductor 2N6504	400 V V_DRM, 4 A I_T(AV), TO-202AA package, but higher I_GT = 10 mA and slower t_q = 100 µs	Acceptable for less demanding phase-control loops; not recommended for fast commutation or low-power gate drive	Choose only if higher average current headroom is needed and gate driver can supply ≥10 mA; avoid in zero-crossing dimmers

Compared with STMicroelectronics TS3A40 and ON Semiconductor 2N6504, the 3P4MH(11)-AZ offers the lowest gate trigger current (0.2 mA) and fastest commutation (80 µs), making it optimal for energy-efficient, compact, and thermally constrained SCR applications where minimal gate drive overhead and tight timing control are critical.

Availability

3P4MH(11)-AZ is available at Aetrix Electronics and suitable for AC motor speed control, light dimming circuits, and heater power regulation requiring stable component supply and long-term industrial availability.

Supply support for 3P4MH(11)-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 manufacturer formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, power, and discrete devices.

The 3P4MH(11)-AZ belongs to Renesas' legacy thyristor product line targeting cost-sensitive, reliability-focused AC power control in consumer and light industrial equipment.

FAQ

What is the maximum junction temperature specification for the 3P4MH(11)-AZ?

The 3P4MH(11)-AZ has a specified junction temperature range of −40°C to +125°C. This allows operation in demanding ambient environments such as enclosed power tools or kitchen appliances. Thermal design must ensure that under worst-case conduction (3 A average, 10 A peak), junction temperature remains within this limit using the 8 °C/W junction-to-case thermal resistance and appropriate heatsinking. Exceeding +125°C risks parametric shift and premature failure.

Does the 3P4MH(11)-AZ support bidirectional AC switching?

No-the 3P4MH(11)-AZ is a unidirectional silicon-controlled rectifier (SCR), conducting current only from anode to cathode when triggered. It blocks reverse voltage up to 400 V (V_RRM) but cannot be triggered in reverse conduction mode. For full-wave AC control, two SCRs must be connected in inverse-parallel, or a TRIAC such as the 3P4MT series should be selected instead of the 3P4MH(11)-AZ.

What is the gate non-trigger voltage (V_GD) specification for the 3P4MH(11)-AZ, and why does it matter?

The 3P4MH(11)-AZ specifies V_GD = 0.2 V minimum at T_j = 125°C and V_DM = V_DRM. This parameter defines the maximum gate-cathode voltage below which the device will not trigger-even under worst-case temperature and voltage stress. It ensures noise immunity in high-temperature applications like motor controllers, preventing false turn-on from EMI or leakage currents. Designers must keep gate wiring short and shielded to maintain this margin.

Can the 3P4MH(11)-AZ be used without a heatsink in low-duty-cycle applications?

Yes-under intermittent operation (e.g., burst-fire heater control with <10% duty cycle), the 3P4MH(11)-AZ may operate without an external heatsink due to its 75 °C/W junction-to-ambient thermal resistance. However, sustained 3 A average current requires heatsinking per the 8 °C/W R_th(j-c) spec. Always verify junction temperature using power loss (V_TM × I_T) and ambient conditions; derate I_T(AV) linearly above 87°C case temperature per the datasheet's Figure 11.

Is the 3P4MH(11)-AZ RoHS compliant?

Yes-the 3P4MH(11)-AZ complies with the EU RoHS Directive, as confirmed by Renesas Electronics' environmental compliance documentation. It contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE) above threshold limits. This enables use in consumer electronics sold in Europe and other RoHS-regulated markets without restriction.

3P4MH(11)-AZ Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: TO-202 Long Tab

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):: 1.6 V

Current - On State (It (AV)) (Max):: 3 A

Current - On State (It (RMS)) (Max):: 4.7 A

Current - Hold (Ih) (Max):: 5 mA

Current - Off State (Max):: 100 µA

Current - Non Rep. Surge 50, 60Hz (Itsm):: 65A, 70A

SCR Type:: Standard Recovery

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-202

3P4MH(11)-AZ FAQ

1.How can I place an order for 3P4MH(11)-AZ through Aetrix?

Please submit a Request for Quotation (RFQ) for 3P4MH(11)-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(11)-AZ reliable?

The price and inventory of 3P4MH(11)-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(11)-AZ is usually 5 days.

3.What payment methods are accepted for 3P4MH(11)-AZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3P4MH(11)-AZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 3P4MH(11)-AZ?

3P4MH(11)-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 3P4MH(11)-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(11)-AZ?

For technical support, including 3P4MH(11)-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3P4MH(11)-AZ requirements.

6.How does Aetrix verify that 3P4MH(11)-AZ is sourced from the original manufacturer or authorized distributors?

All 3P4MH(11)-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(11)-AZ meets industry standards.

7.What is the process for return or replacement of 3P4MH(11)-AZ?

All 3P4MH(11)-AZ units undergo pre-shipment inspection (PSI). If there is an issue with 3P4MH(11)-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(11)-AZ part is unused and in its original packaging.

Return procedure for 3P4MH(11)-AZ:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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