BT136-600E TRIAC: Specifications, Circuit Diagram, and Alternatives

Oct09

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The BT136 is a TRIAC that controls up to 4A of current, making it great for switching AC power in things like lights, motors, and heaters. Its low gate voltage means it can be easily controlled by digital circuits, making it useful in many electronic projects. This guide covers the BT136's details, how to use it, and its applications, including a look at the BT136-600E model.

Catalog

1. Understanding the BT136 TRIAC

2. BT136 Pin Configuration

3. BT136 CAD Model

4. Technical Specifications

5. BT136 Features and Applications

6. Using the BT136 TRIAC

7. BT136 Package Dimensions

8. BT136 Manufacturer

1-BT136-600E TRIAC Specifications, Circuit Diagram, and Alternatives

Understanding the BT136 TRIAC

The BT136 is a type of TRIAC (Triode for Alternating Current) known for its maximum terminal current of 4A and a low gate threshold voltage. These features enable straightforward compatibility with digital circuits, rendering it easy to drive. TRIACs function as bi-directional switches, making them ideal for alternating current (AC) switching in various applications, such as light dimming, motor control, and heating regulation. Their efficient handling of AC power positions them prominently in both industrial and consumer electronics, where they cater to diverse operational requirements.

One notable feature of the BT136 is its low gate threshold voltage, which requires minimal input power for control. This makes it highly suitable for integration with low-power microcontrollers and logic circuits, particularly in scenarios where power efficiency is vital, such as battery-operated devices. The BT136 is designed robustly to ensure reliable performance in harsh environments and durability in long-term applications. This resilience accentuates its usability in challenging conditions, offering a balance between performance and robustness.

BT136 Equivalent/Alternatives

Popular equivalents for the BT136 include:

- BTA08-600B

- BT139

- BTA16

- BT169

- Q4008

BT136 Pin Configuration

The BT136 has a specific pin configuration that significantly influences its operation and usage. Typically, this device features three primary pins: Anode, Cathode, and Gate. Accurate recognition and placement of these pins is essential for circuit integration and optimal performance. A firm understanding helps prevent errors that might cause device malfunction or failure.

2-BT136 Pin Configuration

Pin Number	Pin Name	Description
1	Main Terminal 1	Connected to Phase or neutral of AC mains
2	Main Terminal 2	Connected to Phase or neutral of AC mains
3	Gate	Used to trigger the SCR

BT136 CAD Model

Technical Specifications

NXP USA Inc. BT136-600E/02,127 specifications:

Type	Parameter
Mounting Type	Through Hole
Package / Case	TO-220-3
Surface Mount	NO
Voltage-Off State	600V
Operating Temperature	125°C TJ
Packaging	Tube
Published	2011
Part Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Base Part Number	BT136
Pin Count	3
Configuration	Single
Trigger Device Type	TRIAC
Voltage - Gate Trigger (Vgt) (Max)	1.5V
Current - Non Rep. Surge 50, 60Hz (Itsm)	25A 27A
Current - Gate Trigger (Igt) (Max)	10mA
Current - Hold (Ih) (Max)	15mA
Current - On State (It (RMS)) (Max)	4A
Repetitive Peak Off-state Voltage	600V
Leakage Current (Max)	0.5mA
Triac Type	Logic - Sensitive Gate
Holding Current (Max)	15mA
Source URL Status Check Date	14/06/2013 0:00
RoHS Status	ROHS3 Compliant

BT136 Features and Applications

Category	Details
High blocking voltage capability	Enables operation at high voltages
Low holding current	Suitable for low current loads and reduces EMI at commutation
Planar passivized	Ensures voltage ruggedness and reliability
Sensitive gate	Allows easy triggering
Triggering in all four quadrants	Operates with signals in all quadrants
BT136 Applications
General Purpose Switching	Versatile use in general switching applications
AC Light dimmers	Controls brightness in AC light dimmers
Strobe lights	Used in strobe lighting systems
AC motor speed control	Controls speed in AC motors
Noise coupling circuits	Reduces noise interference in circuits
Controlling AC loads using MCU/MPU	Manages AC loads through microcontrollers or microprocessors
AC/DC Power control	Regulates AC and DC power supplies

Using the BT136 TRIAC

Controlling the BT136 TRIAC with a Switch

4-Controlling the BT136 TRIAC with a Switch

Employing the BT136 TRIAC in a circuit involves the use of a switch for its control. When this switch is activated, the TRIAC connects an AC bulb to the AC mains, provided the gate pin voltage surpasses the threshold and the gate trigger current is reached. This process allows the TRIAC to stay on even if the gate voltage is later removed, mirroring the behavior of an SCR. In such scenarios, the simplicity of the switch mechanism brings a level of convenience and automation often sought in circuit design.

The Role of a Commutation Circuit

5-The Role of a Commutation Circuit

One crucial aspect of managing the BT136 TRIAC is the commutation circuit required to turn it off. This circuit reduces the load current below the holding current, ensuring the TRIAC remains on only if the load current stays above the holding current threshold. Such mechanisms are integral to achieving precise power control, especially under fluctuating load conditions.

Self-Latching and System Stability

6-Self-Latching and System Stability

The BT136's self-latching capability renders it especially useful in scenarios demanding a stable and dependable switch. Incorporating advanced design elements and protective components can refine and enhance the TRIAC's performance in intricate AC control systems.

BT136 Package Dimensions

7-BT136 Package Dimensions

BT136 Manufacturer

NXP Semiconductors is a distinguished enterprise in secure connectivity solutions for embedded applications. With a workforce of over 45,000 and a presence in more than 35 countries, NXP boasts a history that spans over six decades. The company is celebrated for its groundbreaking work in various technological fields, such as connected vehicles, comprehensive security solutions, and intelligent connected systems designed to enhance safety and convenience.

Datasheet PDF

Frequently Asked Questions [FAQ]

1. What is the use of BT136?

The BT136 is designed for AC switching applications, capable of handling up to 4A of current. Its low gate threshold voltage and bi-directional switching make it highly effective in managing moderate AC loads. It is commonly used in domestic and industrial settings to control devices such as motor drives, lighting, and heating systems. You can value the BT136 for its reliability and flexible implementation in systems that require precise control and stability.

2. How do I use BT136?

To use the BT136 in a circuit, it is integrated for efficient AC load switching, and its low gate threshold voltage allows for easy control by digital circuits, making it suitable for various AC applications. In home automation systems, the BT136 can control household appliances, contributing to responsive smart control. For optimal performance and to mitigate voltage spikes and noise interference, it is recommended to incorporate proper circuit design with snubber networks, ensuring reliable operation in the system.

3. Can the TRIAC BT136 directly replace BTA08?

No, the BT136 cannot directly replace the BTA08, as the BTA08-600 can handle an RMS current of up to 8.0A, while the BT136 is limited to 4.0A. Choosing the correct TRIAC depends on understanding the load requirements of the application; using a component beyond its specified limits can lead to overheating, malfunction, or even damage to the circuit. Therefore, it is essential to select a component based on the specific electrical demands to ensure safe and efficient operation.