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NXP Semiconductors ACT108-600D,412
- Part No.:
- ACT108-600D,412
- Manufacturer:
- NXP Semiconductors
- Category:
- TRIACs
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
ACT108-600D,412.pdf
- Description:
- TRIAC SENS GATE 600V 0.8A TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
ACT108-600D from NXP Semiconductors is an AC thyristor power switch in SOT54 (TO-92) package, designed for low-to-medium power AC load control with self-protective transient suppression. It delivers 600 V repetitive peak off-state voltage, 0.8 A RMS on-state current, and 300 V/µs dV/dt immunity. Its exclusive negative gate triggering enables robust operation in fan motor and pump circuits.
For engineers reviewing the ACT108-600D datasheet, ACT108-600D pinout, ACT108-600D application, or ACT108-600D equivalent, this page provides verified technical context, validated pin functions, confirmed thermal and switching parameters, and two field-validated alternative parts for inductive/resistive AC load switching designs.
Technical Context
The ACT108-600D operates as a bidirectional AC switch with full-cycle conduction and negative gate triggering-requiring gate polarity reversal relative to load terminal for turn-on. It integrates intrinsic overvoltage clamping (650 V) and self-protective turn-on during high-energy transients per IEC 61000-4-5 test conditions.
Its gate sensitivity (0.5–5 mA IGT) and remote gate architecture isolate driver circuitry from load current effects. The device sustains 8.8 A non-repetitive peak on-state current for 16.7 ms and exhibits 0.15–0.9 V gate trigger voltage across –50 °C to 125 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDRM | 600 V repetitive peak off-state voltage - ensures reliable blocking of standard 230 VAC mains with safety margin |
| IT(RMS) | 0.8 A RMS on-state current - supports continuous operation in fan and pump motors up to ~180 W at 230 VAC |
| IGT | 0.5–5 mA gate trigger current - enables direct drive from low-power microcontrollers or optocouplers without amplification |
| dVD/dt | 300 V/µs off-state voltage rise rate - prevents false triggering in noisy industrial environments |
| VCL | 650 V clamping voltage at 100 µA - limits transient overvoltage to safe level below breakdown threshold |
| VT | 1.3 V on-state voltage at 1.1 A - yields <1.5 W conduction loss at rated current, minimizing heatsink requirements |
| Rth(j-a) | 150 K/W junction-to-ambient thermal resistance - defines PCB copper area and layout needs for thermal management |
Pinout & Package
SOT54 (TO-92) plastic single-ended leaded through-hole package with 3 leads; body dimensions 4.8 × 4.2 × 5.2 mm (L × E × A), lead pitch 2.54 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | CM (Common) | Anode/cathode common reference point; connects to AC line neutral or return path in bidirectional switching configuration |
| 2 | G (Gate) | Negative-trigger input; requires reverse-polarity pulse relative to LD for turn-on; electrically isolated from load current path |
| 3 | LD (Load) | Main load terminal; carries full AC load current; polarity-sensitive relative to CM for correct triggering quadrant |
Key Features
| Feature | Design Value |
|---|---|
| Exclusive negative gate triggering | Enables noise-immune turn-on by requiring gate signal polarity opposite to load voltage, reducing false triggering in EMI-prone environments |
| Self-protective turn-on during high-energy transients | Activates conduction before voltage exceeds 650 V, diverting surge energy through the device instead of external clamps |
| Remote gate architecture | Physically separates gate driver from load current loop, eliminating ground bounce and enabling simple optocoupler-based isolation |
| Safe clamping of low-energy over-voltage transients | Maintains off-state integrity up to 650 V with leakage <2 µA at 25 °C, preventing premature breakdown during line surges |
| Very sensitive gate | 0.5 mA typical trigger current allows direct interface with 3.3 V/5 V logic or low-current optocouplers like PC817 or TLP185 |
Applications
| Fan Motor Control | Pump Motor Control |
|---|---|
Use Scenario: Speed-controlled AC cooling fan in HVAC or appliance systems using phase-angle or burst-fire dimming. IC Role / Device Role / Timing Role: Bidirectional AC power switch controlling full sine-wave conduction timing via gate pulse synchronization. Use Value: Eliminates need for external snubbers or TVS diodes due to integrated 650 V clamping and 300 V/µs dV/dt immunity. | Use Scenario: Intermittent-duty AC water pump in washing machines or irrigation controllers. IC Role / Device Role / Timing Role: Solid-state relay replacement providing zero-crossing–independent switching with latching behavior after gate pulse. Use Value: Supports inductive kickback suppression without freewheeling diodes, leveraging self-protective turn-on during voltage spikes. |
| Resistive Load Switching | Safety-Critical Load Isolation |
Use Scenario: On/off control of heating elements in consumer appliances or industrial ovens. IC Role / Device Role / Timing Role: AC power switch handling resistive loads up to 0.8 A RMS with thermal derating per PCB copper area. Use Value: Delivers 1.3 V on-state drop at 1.1 A, limiting conduction loss to <1.5 W and enabling compact TO-92 mounting without forced air. | Use Scenario: Fail-safe isolation of auxiliary AC circuits in medical or industrial equipment requiring transient resilience. IC Role / Device Role / Timing Role: Self-protecting AC switch that remains functional after exposure to 2 kV non-repetitive pulses per IEC 61000-4-5. Use Value: Reduces system-level BOM count by integrating transient protection, eliminating discrete MOVs or spark gaps in Class II designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar AC thyristor switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BT134-600D | Same SOT54 package, 600 V VDRM, but 4 A IT(RMS); higher IGT (5–50 mA); no integrated clamping | Requires external transient protection; suited for higher-current loads where thermal headroom exists | Select BT134-600D only when >0.8 A RMS current is needed and board space allows external clamping components |
| MAC97A6 | TO-92 package, 600 V VDRM, 0.8 A IT(RMS); positive gate triggering; no self-protective turn-on feature | Lacks intrinsic high-energy transient response; relies on external crowbar or MOV for surge events | Choose MAC97A6 for cost-sensitive designs where IEC 61000-4-5 compliance is not required and gate drive polarity matches controller output |
Compared with BT134-600D and MAC97A6, the ACT108-600D uniquely combines low gate drive demand (0.5 mA), integrated 650 V clamping, and self-protective turn-on-making it optimal for space-constrained, transient-prone fan/pump controls where reliability trumps raw current rating.
Availability
ACT108-600D is available at Aetrix Electronics and suitable for fan motor circuits, pump motor circuits, and lower-power inductive/resistive load switching requiring stable component supply and long-term industrial lifecycle support.
Supply support for ACT108-600D 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The ACT108-600D belongs to NXP's AC thyristor power switch product line, engineered specifically for robust, self-protected AC load control in cost-sensitive, space-constrained consumer and industrial equipment.
FAQ
What is the maximum RMS on-state current rating for the ACT108-600D?
The ACT108-600D has a maximum RMS on-state current rating of 0.8 A under full sine-wave conditions with lead temperature ≤71 °C. This value is thermally limited by the SOT54 package and requires appropriate PCB copper area for heat dissipation. Exceeding this current risks junction overheating beyond the 125 °C absolute maximum, even if short-duration peaks remain within the 8.8 A non-repetitive limit. Derating is necessary above ambient temperatures of 50 °C.
Does the ACT108-600D support zero-crossing switching?
The ACT108-600D does not inherently support zero-crossing switching-it is a phase-control capable thyristor with negative gate triggering. Zero-crossing operation requires external timing circuitry (e.g., microcontroller + zero-cross detection) to synchronize gate pulses with AC voltage zero crossings. Its full-cycle conduction and high dV/dt immunity (300 V/µs) make it compatible with such implementations, but the device itself lacks internal zero-cross detection or timing logic.
What is the gate trigger voltage range for the ACT108-600D?
The ACT108-600D gate trigger voltage (VGT) ranges from 0.15 V (minimum at high junction temperature) to 0.9 V (maximum at 25 °C), measured at VD = 12 V and IT = 100 mA. This ultra-low VGT enables compatibility with 1.8 V, 3.3 V, and 5 V logic families when combined with appropriate series resistance, and contributes to its very sensitive gate characteristic (0.5–5 mA IGT).
How does the self-protective turn-on feature work in the ACT108-600D?
The self-protective turn-on feature in the ACT108-600D activates conduction when high-energy voltage transients exceed the device's internal clamping threshold (~650 V), causing controlled avalanche and gate-assisted triggering. This diverts surge current through the main terminals rather than allowing destructive voltage buildup. It operates without external components and is validated per IEC 61000-4-5 surge test waveforms, distinguishing it from standard thyristors that require external crowbar circuits.
Is the ACT108-600D suitable for automotive applications?
No, the ACT108-600D is not automotive-qualified. Per NXP's legal disclaimers, it is explicitly designated for industrial and consumer applications only. It has not undergone AEC-Q101 stress testing or automotive-grade qualification, and its thermal, lifetime, and ESD specifications do not meet automotive requirements. Use in automotive systems is unsupported and carries full customer liability per NXP's terms.
ACT108-600D,412 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- Packaging:
- Bulk
- Product Status:
- Active
- Triac Type:
- Logic - Sensitive Gate
- Voltage - Off State:
- 600 V
- Current - On State (It (RMS)) (Max):
- 800 mA
- Voltage - Gate Trigger (Vgt) (Max):
- 900 mV
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 8A, 8.8A
- Current - Gate Trigger (Igt) (Max):
- 5 mA
- Current - Hold (Ih) (Max):
- 20 mA
- Configuration:
- Single
- Operating Temperature:
- 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
ACT108-600D,412 FAQ
1.How can I place an order for ACT108-600D,412 through Aetrix?
Please submit a Request for Quotation (RFQ) for ACT108-600D,412 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 ACT108-600D,412 reliable?
The price and inventory of ACT108-600D,412 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ACT108-600D,412 is usually 5 days.
3.What payment methods are accepted for ACT108-600D,412?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ACT108-600D,412 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ACT108-600D,412?
ACT108-600D,412 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ACT108-600D,412 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 ACT108-600D,412?
For technical support, including ACT108-600D,412 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ACT108-600D,412 requirements.
6.How does Aetrix verify that ACT108-600D,412 is sourced from the original manufacturer or authorized distributors?
All ACT108-600D,412 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 ACT108-600D,412 meets industry standards.
7.What is the process for return or replacement of ACT108-600D,412?
All ACT108-600D,412 units undergo pre-shipment inspection (PSI). If there is an issue with ACT108-600D,412, 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 ACT108-600D,412 part is unused and in its original packaging.
Return procedure for ACT108-600D,412:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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