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DB31
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Product Detailed Parameters
- Description：DIAC DO35 30V 34V 2A 100DEG
- Series：-
- Mfr：Diotec Semiconductor
- Package：Cut Tape (CT),Bulk
- Voltage - Breakover：30 ~ 34V
- Current - Breakover：200 µA
- Current - Peak Output：2 A
- Operating Temperature：-50°C ~ 100°C (TJ)
- Package / Case：DO-204AH, DO-35, Axial
- Supplier Device Package：DO-35
- Current - Hold (Ih) (Max)：-
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Overview
The Diotec Semiconductor DB31 is a bidirectional silicon trigger diode (DIAC) designed for AC switching applications. It features a peak current rating of ±2 A and a total power dissipation of 150 mW at an ambient temperature of 25°C. The device has a maximum junction temperature of 100°C and a thermal resistance from junction to ambient of less than 300 K/W when leads are maintained at ambient temperature 10 mm from the case. The breakover voltage (VBO) is specified at 34 V with a tolerance band (ΔVBO) of 5 V.
Feature Summary
- Bidirectional switching capability
- Protected against fault triggering by light
Applications
- Triggering of Triacs and Thyristors
- AC switches and controls
- Dimmer circuits
Procurement Notes
Verify component authenticity through official Diotec Semiconductor channels or authorized distributors. Confirm compliance with RoHS, REACH, and conflict minerals regulations prior to integration. Ensure storage and handling procedures align with standard commercial-grade reliability requirements for electronic components.
Selection Notes
Select the DB31 based on its specific 34 V breakover voltage and 5 V tolerance band suitable for precise triggering thresholds. Evaluate the 150 mW power dissipation limit and 100°C maximum junction temperature against circuit thermal conditions. Consider the ±2 A peak current capacity for load requirements in AC control systems.
Part Context
The DB31 belongs to the DB3 series of bidirectional trigger diodes manufactured by Diotec Semiconductor. This family includes variants such as the DB3, DB32, and DB4, which share similar structural characteristics but differ in specific electrical parameters like breakover voltage. These components are classified as commercial/industrial grade devices intended for standard reliability applications.
Replacement Considerations
Cross-reference with other manufacturers' DIACs offering comparable 34 V breakover voltage and ±2 A peak current ratings. Verify mechanical footprint compatibility and thermal resistance specifications to ensure equivalent performance in existing AC switch designs.
