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, 800V V(DRM), 40A I(T)RMS, TO-218AC, ROHS COMPLIANT, PLASTIC PACKAGE-3 Product overview: Q8040K7TP 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 800V, 40A. Search-friendly keywords include Triac, TRIACs, electronic component, datasheet, replacement part, 800V, 40A. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 300-Q8040K7TP can be used for catalog matching and distributor lookup.
Manufacturer: Littelfuse Inc.
Win Source Part Number: 792799-Q8040K7TP
Packaging: Tube
Mounting Style: Through Hole
Operating Temperature Range: -40°C ~ 125°C (TJ)
Package: TO-218-3 (Isolated), TO-218AC
Configuration: Single
Voltage - Off State: 800V
Current - Non Rep. Surge 50, 60Hz (Itsm): 335A, 400A
Triac Type: Alternistor - Snubberless
Family Name: Q8040K7
Categories: Discrete Semiconductor Products
Manufacturer Package: TO-218 Isolated Tab
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): BTA41-800BRG; BTB41-800BRG; Q8040K7;
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: 36 pct.
Supply and Demand Status: Limited
TRIAC Alternistor - Snubberless 800V 40A Through Hole TO-218 Isolated Tab
TRIAC, 800V, 40A, TO-218AC; Peak Repetitive Off State Voltage:800V; On State RMS Current:40A; Triac Case Style:TO-218AC; Gate Trigger Voltage Max:2V; Peak Non Repetitive Surge Current:335A; Holding Current Max:100mA RoHS Compliant: Yes
TRIAC ALTERNISTOR 800V 40A TO218
Triacs Altnstr 800V 40A Iso 100-100-100mA
| Littelfuse, Inc. | ERSAELECTRONICS PTE. LTD. | Win Source Electronics | DigiKey | Newark, An Avnet Company | Shenzhen Shengyu Electronics Technology Limited | VAST STOCK CO., LIMITED | |
|---|---|---|---|---|---|---|---|
| Product Category | Triacs | Triacs | Triacs | Thyristors | Triacs | Triacs | Thyristors |
| Product Number | Q8040K7TP | 300-Q8040K7TP | 792799-Q8040K7TP | Q8040K7TP-ND | 50AJ8022 | Q8040K7TP | Q8040K7TP |
| Product Name | Low Power TRIAC up to 1200V | 800V 40A Triac | Triacs - Q8040K7TP | TRIACs | Triac, 800V, 40A, To-218Ac; Peak Repetitive Off State Voltage Littelfuse | Discrete Semiconductor Products - Thyristors - TRIACs | Triacs |
| Standards and Certifications | RoHS | RoHS | RoHS | ||||
| VDRM | 800 volts | 800 volts | 800 volts | ||||
| VTM | 1.8 volts | ||||||
| IT(RMS) | 40 amps | 40 amps | |||||
| Package Type | TO-218-3 | TO-218-3 (Isolated), TO-218AC | TO-218-3 Isolated Tab, TO-218AC | TO-218AC | TO-218-3 Isolated Tab, TO-218AC |
