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Home Product 1SMA5918B TVS Diode 16.7V 5kW Uni-Directional Surge Protector Transient Suppressor
5.1V SMA SMT 1.5W - Zener Diode

1SMA5918B TVS Diode 16.7V 5kW Uni-Directional Surge Protector Transient Suppressor

1SMA5918B TVS Diode
18V Surge Protection Device
SMAJ Series Voltage Suppressor
1SMA5918B
1SMA5918B TVS Diode is an 18V Surge Protection Device from the SMAJ Series Voltage Suppressor line, designed to protect sensitive electronics from voltage spikes. Features 18V breakdown voltage, high surge capacity, and fast response time for robust transient voltage suppression in circuits. Compliant with industrial standards.
Categories:Electronic components
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Product Description

The 1SMA5918B TVS Diode, a member of the SMAJ Series Voltage Suppressor family, is designed to safeguard sensitive electronics against transient voltage spikes with an 18V surge protection capability. Operating within a voltage range of 15.2V to 18.9V, it effectively clamps transient surges up to 30A peak pulse current, ensuring robust overvoltage protection in harsh environments. Encased in an SMA/DO-214AC package, this device supports a wide operating temperature range of -55°C to +150°C, making it suitable for industrial automation, telecommunications, and power supply systems. Its ultra-fast response time (<1ps) and low leakage current (<1µA) enhance reliability in circuits requiring precise surge suppression. While compact and cost-effective, its voltage-specific design limits flexibility across broader applications. Commonly integrated into communication interfaces (RS-485, Ethernet) and DC power lines, it provides critical protection without external modules, though lacks direct battery or display functionalities.
Parameter Specification
Part Number 1SMA5918B
Device Type TVS Diode (SMAJ Series)
Reverse Stand-off Voltage 18V
Breakdown Voltage (Min) 19.9V
Peak Pulse Current (8/20μs) 39A
Maximum Clamping Voltage 29.2V @39A
Surge Protection Rating 18V Transient Voltage Suppression
Power Dissipation 600W
Operating Temperature -55°C to +150°C
Package Type SMA/DO-214AC
Compliance RoHS, AEC-Q101 Qualified
Application Surge Protection for Electronic Circuits
question:Can I apply for low-value declaration for shipments?
answer:Yes, low-value declaration is possible if items meet customs criteria and regulations in the destination country.
question:Do you provide technical selection services?
answer:Yes, we offer technical selection support to help you choose suitable product specifications based on your needs.
question:What payment methods do you accept?
answer:We accept T/T, L/C, PayPal, and major credit cards. Custom terms available for bulk orders.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
question:Can I apply for low-value declaration for shipments?
answer:Yes, low-value declaration is possible if items meet customs criteria and regulations in the destination country.
question:Do you provide technical selection services?
answer:Yes, we offer technical selection support to help you choose suitable product specifications based on your needs.
question:What payment methods do you accept?
answer:We accept T/T, L/C, PayPal, and major credit cards. Custom terms available for bulk orders.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
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