In the complex environments of electronic devices, transient voltages are like hidden threats, constantly jeopardizing the stability and safety of circuits. To tackle this challenge, the Transient Voltage Suppression (TVS) diode was introduced, becoming a powerful ally in the field of circuit protection. Today, we introduce the exceptional performance of the unidirectional SMAJ170A TVS diode, which has become a robust shield for ensuring circuit safety with its outstanding performance and reliable protection.

Key Features Highlights

Polarity: Unidirectional  

Designed specifically for unidirectional circuit protection, ensuring effective transient voltage suppression in one direction.

Slkor Transient Protection Diode SMAJ170A product photo

Reverse Working Voltage (Vrwm): 170V  

Under normal operating conditions, the diode remains in the off state, having no impact on the circuit, thereby ensuring stable circuit operation.

Slkor Transient Protection Diode SMAJ170A specification

Breakdown Voltage Range: 189V to 209V  

With a precisely controlled breakdown voltage range, the diode quickly responds to transient overvoltage and safely dissipates the excess energy.

Parameters of Slkor Transient Protection Diode SMAJ170A

Reverse Leakage Current (Ir): 5μA  

The extremely low reverse leakage current reduces energy consumption, increases circuit efficiency, and ensures stable long-term performance.

Peak Pulse Current (Ipp) @ 10/1000μs: 1.5A  

The diode's high peak pulse current handling capacity allows it to easily withstand transient surges in the circuit, protecting it from damage.

Maximum Clamping Voltage: 275V  

Limits the maximum voltage across the diode, ensuring the safety of the circuit during transient overvoltage events.

Peak Pulse Power (Ppp) @ 10/1000μs: 400W  

High peak pulse power handling provides an additional layer of protection, enhancing the overall reliability of the circuit.

In-Depth Analysis

1. Unidirectional Protection, Professional Safeguard  

The SMAJ170A features a unidirectional polarity design, meaning it provides transient voltage protection in one specific direction. When a positive transient overvoltage occurs in the circuit, the SMAJ170A quickly responds, dissipating the excess voltage to ground or another low-impedance path, thus ensuring the safe operation of the circuit. This unidirectional protection feature makes the SMAJ170A ideal for circuits that require one-way protection, such as DC power supplies, unidirectional signal lines, and more.

2. Precision Control, Stable and Reliable  

With a reverse working voltage of 170V and a precise breakdown voltage range between 189V and 209V, the SMAJ170A ensures that the diode remains in the off state under normal operating conditions, with no impact on the circuit. When the voltage exceeds this range, the diode will quickly turn on and dissipate the excess voltage energy, protecting other components in the circuit from transient overvoltage damage.

3. Low Leakage Current, Energy Efficient  

The SMAJ170A's reverse leakage current is extremely low, at just 5μA. This characteristic not only reduces energy consumption when the diode is in the off state, improving overall circuit efficiency, but also ensures that the diode maintains stable performance over long periods of operation. For electronic devices requiring high energy efficiency and long-term stability, the SMAJ170A is an ideal choice.

4. Strong Peak Current, Handling Surges  

The SMAJ170A demonstrates exceptional capability in handling transient overvoltages and surge currents that may occur in the circuit. Its peak pulse current capacity is 1.5A for a 10/1000μs waveform, meaning it can rapidly respond to even severe transient surges, quickly dissipating the excess voltage energy and ensuring the safe operation of the circuit.

5. Dual Protection, Safe and Secure  

With a maximum clamping voltage of 275V and a peak pulse power of 400W, the SMAJ170A provides a dual protection system. Even under the most extreme conditions, the voltage across the diode will not exceed safe levels, while its high power handling capability ensures that it can effectively manage transient overvoltage events.

Application Scenarios  

Thanks to its excellent electrical characteristics and stability, the SMAJ170A is widely used in various electronic devices. Whether in power input terminals, signal line interfaces, or other circuits requiring transient voltage protection, the SMAJ170A provides comprehensive and reliable protection. Its unidirectional protection, low reverse leakage current, high peak pulse current handling capacity, and dual protection features (maximum clamping voltage and peak pulse power) make it a reliable safeguard in the ever-changing electronic environment.

Conclusion  

In summary, the SMAJ170A Transient Voltage Suppression Diode demonstrates outstanding performance in the field of circuit protection with its unidirectional protection, precise breakdown voltage control, low reverse leakage current, high peak pulse current tolerance, and dual protection (maximum clamping voltage and peak pulse power). For electronic device designers seeking high performance, stability, and energy efficiency, the SMAJ170A is undoubtedly an ideal choice. In the future of circuit protection, the SMAJ170A will continue to leverage its unique advantages to ensure the safe operation of electronic devices.