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SD1A220A
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Product Detailed Parameters
- Description：THYRISTOR SMA T&R 5K
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Voltage - Off State：-
- Voltage - Gate Trigger (Vgt) (Max)：-
- Current - Gate Trigger (Igt) (Max)：-
- Current - Hold (Ih) (Max)：-
- Current - Non Rep. Surge 50, 60Hz (Itsm)：-
- SCR Type：-
- Operating Temperature：-
- Grade：-
- Qualification：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Voltage - On State (Vtm) (Max)：-
- Current - On State (It (AV)) (Max)：-
- Current - On State (It (RMS)) (Max)：-
- Current - Off State (Max)：-
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Overview
The SD1A220A is a silicon unidirectional thyristor manufactured by Diodes Incorporated, designed for high-voltage triggering applications. It operates within an operating junction temperature range of -40°C to +125°C and features a peak repetitive off-state voltage (VDRM) of 190 V. The device supports an on-state RMS current (IT(RMS)) of 1 A at 80°C ambient conditions. Its breakover voltage (VBO) ranges from 210 V to 226 V with a typical value of 220 V at 5 uA test current. The holding current (IH) is specified as a maximum of 60 mA. The component utilizes a DO-214AC molded plastic package.
Feature Summary
- High voltage blocking capability with a 190 V peak repetitive off-state rating
- Compact surface-mount design utilizing the SMA (DO-214AC) package format
- Low trigger sensitivity characterized by a maximum holding current of 60 mA
Applications
- Gas igniter circuits
- High voltage SCR triggering systems
Procurement Notes
Verify the specific part number suffix against official manufacturer documentation to confirm exact electrical tolerances and packaging configurations. Ensure that procurement channels provide traceable datasheets matching the SD1A220A designation. Confirm compliance with RoHS 2011/65/EU standards if environmental regulations apply to the intended assembly process.
Selection Notes
Select this component when a compact, high-voltage silicon unidirectional thyristor is required for gas ignition or similar triggering tasks. The 190 V VDRM rating must be sufficient for the circuit's peak reverse voltage. Verify that the 1 A IT(RMS) current capacity meets the load requirements and that the 210–226 V breakover voltage aligns with the desired trigger threshold.
Part Context
This device belongs to the SIDAC family of high-voltage silicon unidirectional thyristors produced by Diodes Incorporated. These components are engineered specifically for applications requiring reliable high-voltage switching in a small form factor. The series is commonly utilized in industrial and consumer electronics where space constraints necessitate the use of surface-mount packages like the DO-214AC.
Replacement Considerations
Consult official substitution guides for verified equivalents. Generic replacements must match the 190 V VDRM, 1 A IT(RMS), and DO-214AC package dimensions to ensure mechanical and electrical compatibility without redesigning the host circuit board.
FAQ
What is the maximum lead solder temperature for the SD1A220A?
The maximum lead solder temperature is 260°C, provided the lead length is at least 1/16 inch from the case and the exposure time does not exceed 10 seconds.
What is the typical thermal resistance from junction to case?
The typical thermal resistance (RthJC) is 15°C/W.
Does the SD1A220A support bidirectional operation?
No, the SD1A220A is a unidirectional thyristor, meaning it is designed to conduct current in only one direction once triggered.
