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STMicroelectronics Z0409MB
- Part No.:
- Z0409MB
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
Z0409MB.pdf
- Description:
- TRIAC 600V 4A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:4,985
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Product details
Overview
Z0409MB from STMicroelectronics is a 4 A, 600 V repetitive peak off-state voltage (VDRM/VRRM), 4-quadrant triac in DPAK package, with 10 mA gate trigger current (IGT) and 125 °C maximum junction temperature, designed for AC load switching in heating elements and motor-driven power tools.
For engineers reviewing the Z0409MB datasheet, Z0409MB pinout, Z0409MB application, or Z0409MB equivalent, this part supports robust inrush current limiting, high-temperature industrial actuation, and compact SMD-based AC control where thermal resistance (Rth(j-c) = 3 °C/W) and surge immunity (ITSM = 15 A @ 20 ms) are critical selection criteria.
Technical Context
This triac operates across all four quadrants without requiring external commutation circuitry, enabling bidirectional conduction triggered by either polarity of gate signal relative to MT1. Its dV/dt immunity (≥100 V/µs at Tj = 110 °C) and critical rate of rise of on-state current (dl/dt = 50 A/µs) ensure reliable turn-on under noisy line conditions.
The device integrates halogen-free molding and lead-free plating compliant with ECOPACK2, and its DPAK thermal design delivers Rth(j-c) = 3 °C/W for efficient heat transfer to PCB copper areas, supporting continuous 4 A RMS operation at Tc = 107 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 4 A - Continuous AC load current handling capability at case temperature 107 °C |
| VDRM / VRRM | 600 V - Maximum repetitive blocking voltage in both directions before unintended conduction |
| VDSM / VRSM | 750 V - Non-repetitive peak voltage withstand for transient surges up to 10 ms |
| IGT | 10 mA - Maximum gate current required to reliably trigger conduction in all four quadrants |
| Tj max. | 125 °C - Highest allowable junction temperature during operation, defining thermal derating limits |
| Rth(j-c) | 3 °C/W - Junction-to-case thermal resistance, enabling direct heatsinking via PCB copper area |
| dV/dt immunity | ≥100 V/µs - Minimum rate of voltage rise across main terminals that avoids false triggering at 110 °C |
Pinout & Package
DPAK (TO-252) package with exposed metal tab for thermal dissipation and mechanical anchoring; three terminals: MT1 (Main Terminal 1), MT2 (Main Terminal 2), and Gate (G).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MT1 | Anode 1 / Reference terminal | Primary current return path; referenced for gate triggering in Quadrants I and II |
| MT2 | Anode 2 / Main current path | High-current AC load connection; polarity defines conduction quadrant with gate signal |
| Gate | Control input | Triggers bidirectional conduction when current ≥10 mA applied relative to MT1 in either polarity |
Key Features
| Feature | Design Value |
|---|---|
| 4-quadrant triggering | Enables gate-triggered conduction with either polarity of gate voltage relative to MT1, eliminating need for external diodes or polarity conditioning |
| High dV/dt immunity | ≥100 V/µs at 110 °C ensures stable operation in electrically noisy environments like motor drives and dimmer circuits |
| Low on-state voltage | VTM ≤ 2 V at 5.5 A reduces conduction losses and self-heating during sustained 4 A RMS operation |
| ECOPACK2 compliance | Halogen-free molding compound and lead-free plating meet RoHS and environmental manufacturing requirements without performance trade-offs |
Applications
| Heating Control in Ovens | Power Tool Motor Control |
|---|---|
Use Scenario: Phase-angle controlled AC power delivery to resistive heating elements in domestic ovens and cooktops. IC Role / Device Role / Timing Role: Bidirectional AC switch replacing mechanical relays; triggered synchronously with zero-crossing detection for EMI reduction. Use Value: Enables precise thermal regulation with 4 A RMS current handling and 600 V blocking, reducing component count versus discrete SCR+diode solutions. | Use Scenario: Solid-state speed and direction control of universal motors in cordless drills and angle grinders. IC Role / Device Role / Timing Role: Four-quadrant triac acting as full-wave AC power switch, supporting forward/reverse motor rotation via gate polarity control. Use Value: Eliminates reversing contactors; 125 °C Tj rating and 15 A surge current support withstand intermittent high-torque startup loads. |
| Inrush Current Limiting | Industrial Actuator Switching |
Use Scenario: Controlled ramp-up of AC current into transformer primaries or large capacitor banks to prevent fuse blowing. IC Role / Device Role / Timing Role: Gradual conduction initiation using delayed gate firing, leveraging 10 mA low-IGT for microcontroller-compatible drive. Use Value: Reduces peak inrush by >70% compared to direct-switched loads, enabled by precise phase-control timing and 750 V non-repetitive surge rating. | Use Scenario: On/off control of solenoid valves and pneumatic actuators in factory automation panels. IC Role / Device Role / Timing Role: High-reliability AC load switch interfacing directly with PLC output modules and optocoupler-isolated gate drivers. Use Value: 3 °C/W Rth(j-c) allows direct PCB copper heatsinking-no external heatsink needed for 4 A continuous duty in DIN-rail enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triac-based AC switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BTB04-600SL | Same IT(RMS) = 4 A, VDRM = 600 V, but IGT = 15 mA; TO-220 package with higher Rth(j-c) = 5.5 °C/W | Requires external heatsink above 2.5 A; less suitable for compact SMD designs | Prefer when through-hole mounting and higher gate drive margin are acceptable |
| MAC4DCM | IT(RMS) = 4 A, VDRM = 600 V, IGT = 10 mA, but D2PAK package and Rth(j-c) = 2.5 °C/W | Better thermal performance but larger footprint; not drop-in compatible with DPAK land pattern | Choose when higher thermal headroom justifies PCB area increase and re-layout |
Compared with BTB04-600SL and MAC4DCM, Z0409MB uniquely balances SMD compatibility, 10 mA low-IGT drive, and 3 °C/W thermal resistance in DPAK-making it optimal for space-constrained, thermally demanding AC control without external heatsinks.
Availability
Z0409MB is available at Aetrix Electronics and suitable for heating control, power tool motor drives, inrush limiting circuits, and industrial actuator switching requiring stable component supply and long-term production continuity.
Supply support for Z0409MB 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 designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for automotive, industrial, and consumer applications.
Z0409MB belongs to ST's high-voltage triac product line, engineered specifically for compact, high-reliability AC power control in home appliances and industrial equipment operating up to 125 °C junction temperature.
FAQ
What is the minimum gate trigger current for Z0409MB across all quadrants?
The maximum gate trigger current (IGT) is specified as 10 mA for all four quadrants at Tj = 25 °C, with typical values decreasing as junction temperature rises. This low IGT enables direct drive from standard microcontroller GPIO pins with appropriate series resistance, without requiring dedicated gate driver ICs.
Can Z0409MB be used in zero-crossing switched applications?
Yes-Z0409MB supports zero-crossing switching when paired with a zero-crossing detector and timing controller. Its 100 V/µs dV/dt immunity prevents false triggering during voltage transitions near zero, and its 4-quadrant operation ensures consistent turn-on regardless of AC half-cycle polarity.
What is the recommended PCB copper area for thermal management?
Per Figure 12 in DS14022, a minimum 0.5 cm² copper surface under the DPAK tab achieves Rth(j-a) ≈ 70 °C/W. For continuous 4 A operation, ST recommends ≥2.5 cm² of 2-oz copper connected to the tab via multiple thermal vias to maintain Tj ≤ 125 °C at ambient temperatures up to 70 °C.
Is Z0409MB compliant with lead-free soldering standards?
Yes-Z0409MB features lead-free plating and is qualified for lead-free reflow soldering per JEDEC J-STD-020, with maximum lead temperature rated at 260 °C for 10 seconds. The halogen-free molding compound meets UL94 V0 flammability requirements and ECOPACK2 environmental specifications.
Z0409MB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- ECOPACK2
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Triac Type:
- Standard
- Voltage - Off State:
- 600 V
- Current - On State (It (RMS)) (Max):
- 4 A
- Voltage - Gate Trigger (Vgt) (Max):
- 1.3 V
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 15A, 16A
- Current - Gate Trigger (Igt) (Max):
- 10 mA
- Current - Hold (Ih) (Max):
- 10 mA
- Configuration:
- Single
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
Z0409MB FAQ
1.How can I place an order for Z0409MB through Aetrix?
Please submit a Request for Quotation (RFQ) for Z0409MB 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 Z0409MB reliable?
The price and inventory of Z0409MB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for Z0409MB is usually 5 days.
3.What payment methods are accepted for Z0409MB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for Z0409MB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for Z0409MB?
Z0409MB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your Z0409MB 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 Z0409MB?
For technical support, including Z0409MB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your Z0409MB requirements.
6.How does Aetrix verify that Z0409MB is sourced from the original manufacturer or authorized distributors?
All Z0409MB 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 Z0409MB meets industry standards.
7.What is the process for return or replacement of Z0409MB?
All Z0409MB units undergo pre-shipment inspection (PSI). If there is an issue with Z0409MB, 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 Z0409MB part is unused and in its original packaging.
Return procedure for Z0409MB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
Z0409MB Tags
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Z0103NN5AA4
STMicroelectronics
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Z0103MNT1G
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BTA08-600CWRG
STMicroelectronics
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T835H-6G-TR
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