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QK008DH4TP is listed in the Triacs range at ChipApex. The manufacturer field lists Littelfuse Inc.. Its product description is TRIAC ALTERNISTOR 1KV 8A TO252. Review the specifications below when checking this part for your BOM.
Triacs specifications for QK008DH4TP
- Description：TRIAC ALTERNISTOR 1KV 8A TO252
- Series：-
- Mfr：Littelfuse Inc.
- Package：Tube
- Triac Type：Alternistor - Snubberless
- Voltage - Off State：1 kV
- Current - On State (It (RMS)) (Max)：8:00 AM
- Voltage - Gate Trigger (Vgt) (Max)：1.3 V
- Current - Non Rep. Surge 50, 60Hz (Itsm)：80A, 85A
- Current - Gate Trigger (Igt) (Max)：35 mA
- Current - Hold (Ih) (Max)：35 mA
- Configuration：Single
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：TO-252 (DPAK)
- Grade：-
- Qualification：-
Triacs datasheet and documents for QK008DH4TP
Triacs Overview
The Littelfuse QK008DH4TP is a bidirectional triac designed for high-voltage power control applications. It features an RMS on-state current of 8 A and a rated repetitive off-state voltage (VDRM) of 1 kV. The device exhibits a maximum holding current of 35 mA and a gate trigger voltage of 1.3 V with a corresponding gate trigger current of 35 mA. It operates within a temperature range of -40°C to +125°C and is housed in a TO-252-3 surface-mount package.
Triacs Feature Summary
- High voltage blocking capability suitable for demanding AC power switching environments
- Robust thermal performance allowing operation at elevated junction temperatures up to 125°C
- Surface-mount construction facilitating automated assembly and compact circuit board layouts
Triacs Applications
- Industrial motor speed control systems
- Solid-state relay modules
- AC power regulation circuits
Triacs Procurement Notes
Verify the specific suffix designation against official Littelfuse documentation to confirm exact electrical tolerances and packaging variations. Confirm availability status as distribution channels may list this component as discontinued or limited stock depending on regional inventory levels.
Triacs Selection Notes
Select this component when a 1 kV rating is required for AC load switching. Ensure the driving circuit can supply the specified 35 mA gate trigger current. Verify that the PCB layout supports the thermal dissipation requirements of the TO-252-3 package under continuous 8 A load conditions.
Triacs Part Context
This part belongs to the Qxx08xHx series from Littelfuse, which focuses on high-reliability thyristors. The 'TP' suffix typically indicates tape and reel packaging, distinguishing it from cut-tape or bulk variants within the same electrical specification family.
Triacs Replacement Considerations
Direct substitutes include other 1 kV, 8 A triacs in TO-252 packages such as the QK008DH4. Verify pinout compatibility and thermal resistance parameters before swapping components in existing designs.
Explore related parts through Thyristors, Discrete Semiconductor Products, all product categories, ChipApex homepage.
