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QJ8040JH7TP is listed in the Triacs range at ChipApex. The manufacturer field lists Littelfuse Inc.. Its product description is TRIAC ALTERNSTR 800V 40A TO218X. Review the specifications below when checking this part for your BOM.
Triacs specifications for QJ8040JH7TP
- Description：TRIAC ALTERNSTR 800V 40A TO218X
- Series：QJxx40xx
- Mfr：Littelfuse Inc.
- Package：Tube
- Triac Type：Alternistor - Snubberless
- Voltage - Off State：800 V
- Current - On State (It (RMS)) (Max)：40 A
- Voltage - Gate Trigger (Vgt) (Max)：1.3 V
- Current - Non Rep. Surge 50, 60Hz (Itsm)：420A, 500A
- Current - Gate Trigger (Igt) (Max)：100 mA
- Current - Hold (Ih) (Max)：100 mA
- Configuration：Single
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-218X-3 Isolated Tab
- Supplier Device Package：TO-218X Isolated
- Grade：-
- Qualification：-
Triacs datasheet and documents for QJ8040JH7TP
Triacs Overview
The Littelfuse QJ8040JH7TP is a bidirectional triac designed for high-power switching applications. It features an RMS on-state current (It RMS) of 40 A and a non-repetitive peak on-state current of 500 A. The device supports a rated repetitive off-state voltage (VDRM) of 800 V with a maximum off-state leakage current of 20 uA at VDRM. Key electrical parameters include an on-state voltage of 1.6 V, a holding current (Ih) maximum of 100 mA, a gate trigger voltage (Vgt) of 1.3 V, and a gate trigger current (Igt) of 100 mA. It operates within a temperature range of -40 C to +150 C and utilizes an SMTO-218 through-hole package.
Triacs Feature Summary
- High thermal stability enabling operation up to +150 C junction temperature
- Robust surge handling capability with 500 A non-repetitive peak current rating
- Low gate sensitivity requiring only 1.3 V and 100 mA for reliable triggering
Triacs Applications
- Industrial motor control systems
- Solid-state relay designs
- AC power regulation circuits
Triacs Procurement Notes
Verify the specific suffix H7TP against the manufacturer datasheet to confirm lead-free status and tape-and-reel packaging specifications. Ensure the ordering part number matches the required voltage and current ratings for the target application circuit design.
Triacs Selection Notes
Select this component when an 800 V blocking voltage and 40 A continuous current are required in a TO-218 form factor. Compare the 1.6 V on-state voltage drop against alternative thyristors to evaluate conduction losses. Confirm that the 100 mA holding current meets the minimum load requirements of the controlled circuit.
Triacs Part Context
This device belongs to the Littelfuse QJxx40xx series of high-current triacs. It shares the 40 A current rating with variants like QJ6040JH7TP but offers higher voltage blocking capability. The SMTO-218 package provides standardized mounting dimensions for industrial heat sink integration.
Triacs Replacement Considerations
QJ8040K4TP is a verified substitute within the same series offering identical 40 A and 800 V ratings. Verify if the slight variation in holding current between these suffixes impacts the specific circuit design requirements.
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