40 Amp bi-directional solid state switch series is designed for AC switching and phase control applications such as motor speed and temperature modulation controls, lighting controls, and static switching relays.Alternistor type devices only operate in quadrants I, II, & III and are used in circuits requiring high dv/dt capability. RoHS Compliant Glass-passivated junctions Voltage capability up to 1 kV Surge capability up to 400 A J-packages and K-packages packages are UL Recognized for isolation voltages of 2.5 kVrms
Alternistor TRIAC, 400V V(DRM), 40A I(T)RMS, ROHS COMPLIANT, PLASTIC, TO-218X, 3 PIN Product overview: Q4040J7TP from Littelfuse is a Triac for embedded electronics, industrial equipment, maintenance repair, OEM production, and component sourcing. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include 400V, 40A. Search-friendly keywords include Triac, TRIACs, electronic component, datasheet, replacement part, 400V, 40A. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 300-Q4040J7TP can be used for catalog matching and distributor lookup.
TRIAC Alternistor - Snubberless 400V 40A Through Hole TO-218X Isolated
TRIAC Alternistor - Snubberless 400V 40A Through Hole TO-218X Isolated
Manufacturer: Littelfuse Inc.
Win Source Part Number: 792776-Q4040J7TP
Packaging: Tube
Mounting Style: Through Hole
Operating Temperature Range: -40°C ~ 125°C (TJ)
Package: TO-218X-3 (Isolated)
Configuration: Single
Voltage - Off State: 400V
Current - Non Rep. Surge 50, 60Hz (Itsm): 335A, 400A
Triac Type: Alternistor - Snubberless
Family Name: Q4040J7
Categories: Discrete Semiconductor Products
Manufacturer Package: TO-218X Isolated
Current - On State (It (RMS)) (Maximum): 40A
Voltage - Gate Trigger (Vgt) (Maximum): 2V
Current - Gate Trigger (Igt) (Maximum): 100mA
Current - Hold (Ih) (Maximum): 100mA
Alternative Parts (Cross-Reference): Q4040J7;
Introduction Date: July 09, 2008
ECCN: EAR99
Country of Origin: China
Estimated EOL Date: 2026
Halogen Free: Compliant
Popularity: Medium
Fake Threat In the Open Market: 45 pct.
Supply and Demand Status: Limited
TRIAC ALTERNISTOR 400V TO218X
TRIAC, 400V, 40A, TO-218X; Peak Repetitive Off State Voltage:400V; On State RMS Current:40A; Triac Case Style:TO-218X; Gate Trigger Voltage Max:2V; Peak Non Repetitive Surge Current:335A; Holding Current Max:100mA; No. of Pins:3Pins RoHS Compliant: Yes
| Littelfuse, Inc. | ERSAELECTRONICS PTE. LTD. | DigiKey | Win Source Electronics | VAST STOCK CO., LIMITED | Shenzhen Shengyu Electronics Technology Limited | Newark, An Avnet Company | |
|---|---|---|---|---|---|---|---|
| Product Category | Triacs | Triacs | Thyristors | Triacs | Thyristors | Triacs | Triacs |
| Product Number | Q4040J7TP | 300-Q4040J7TP | Q4040J7TP-ND | 792776-Q4040J7TP | Q4040J7TP | Q4040J7TP | 79X6063 |
| Product Name | Low Power TRIAC up to 1200V | 400V 40A Triac | TRIACs | Triacs - Q4040J7TP | Triacs | Discrete Semiconductor Products - Thyristors - TRIACs | Triac, 400V, 40A, To-218X; Peak Repetitive Off State Voltage Littelfuse |
| Standards and Certifications | RoHS | RoHS | RoHS | ||||
| VDRM | 400 volts | 400 volts | 400 volts | ||||
| VTM | 1.8 volts | ||||||
| IT(RMS) | 40 amps | 40 amps | |||||
| Operating Temperature | -40 C (-40 F) | -40 to 125 C (-40 to 257 F) | -40 to 125 C (-40 to 257 F) | -40 to 125 C (-40 to 257 F) |
