BTA41-800B STMicroelectronics Triac A (Transistor Outline, Vertical) In Stock
The BTA41-800B is an STMicroelectronics 40A, 800V isolated TRIAC housed in a TOP3 plastic package with a maximum DC gate trigger current of 100mA, designed for AC power switching and phase control applications. Available from stock with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Transistor Outline, Vertical
- Pin Count
- 3
- Lifecycle
- OBSOLETE
- Datasheet
- BTA41-800B Datasheet PDF
- Category
- Triac A
- Price
- From $0.6580(MOQ 10)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of BTA41-800B?
- 40A RMS on-state current rating
- 800V repetitive peak off-state voltage
- 100mA maximum DC gate trigger current
- 80mA maximum holding current
- 250 V/µs minimum critical rate of rise of off-state voltage
- Electrically isolated TOP3 package for simplified heat-sink mounting
What is BTA41-800B used for?
The BTA41-800B triac is widely used for AC motor speed control, solid-state relays, and light dimming circuits that require high-current phase control. Its isolated TOP3 package simplifies mounting to a common heat sink in industrial power control panels and appliance motor drives. High dV/dt immunity also suits it for switching inductive loads such as pumps and compressors.
What are the specifications of BTA41-800B?
| YTEOL | 0 |
| Case Connection | ISOLATED |
| Configuration | SINGLE |
| Critical Rate of Rise of Commutation Voltage-Min | 5V/us |
| Critical Rate of Rise of Off-State Voltage-Min | 250V/us |
| DC Gate Trigger Current-Max | 100mA |
| DC Gate Trigger Voltage-Max | 1.5V |
| Holding Current-Max | 80mA |
| JESD-30 Code | R-PSFM-T3 |
| JESD-609 Code | e3 |
| Number of Elements | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | FLANGE MOUNT |
| Peak Reflow Temperature (Cel) | 245 |
| Qualification Status | Not Qualified |
| RMS On-state Current-Max | 40A |
| Repetitive Peak Off-state Voltage | 800V |
| Surface Mount | NO |
| Terminal Finish | MATTE TIN |
| Terminal Form | THROUGH-HOLE |
| Terminal Position | SINGLE |
| Trigger Device Type | 4 QUADRANT LOGIC LEVEL TRIAC |
| Package | Transistor Outline, Vertical |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8541.30.00.80 |
Where can I find the BTA41-800B datasheet?
BTA41-800B Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for BTA41-800B?
Compatible alternatives and drop-in replacements for BTA41-800B:
suggested
Frequently Asked Questions
How much AC load current can the BTA41-800B switch continuously?
The BTA41-800B is rated for 40A RMS on-state current and can block up to 800V, making it suitable for switching high-power AC loads such as motors and heaters in industrial control panels.
Why is the isolated TOP3 package useful when mounting this triac to a heat sink?
Because the case connection is electrically isolated, the BTA41-800B in its TOP3 plastic package can be mounted directly to a shared heat sink alongside other components without additional insulating hardware, while handling an 80mA maximum holding current.
What gate drive signal is required to trigger the BTA41-800B into conduction?
Triggering requires a DC gate current of up to 100mA at a maximum gate voltage of 1.5V, and the device maintains immunity to false triggering with a minimum critical rate of rise of off-state voltage of 250 V/us.
Related Guides
DP83TG720SWRHATQ1 Automotive Ethernet PHY Selection Guide
Choose DP83TG720SWRHATQ1 by comparing MAC interfaces, exact ordering codes, qualification evidence, and documented supply offers.
Nov 15, 2026
TLV76033 Selection Guide: Headroom, Heat, and Sourcing
Choose a TLV76033 3.3-V supply using manufacturer ratings, load profiles, dropout calculations, thermal checks, and exact orderable parts.
Nov 14, 2026
DP83TG720SWRHATQ1 Automotive Ethernet Board Design Guide
A practical DP83TG720SWRHATQ1 board checklist for host interfaces, startup, channel validation, qualified variants, and sourcing.
Nov 14, 2026
BQ76942PFBR Battery Monitor Selection and Procurement Guide
Choose BQ76942PFBR by cell count, protection architecture, factory configuration, measurement needs, and a controlled sourcing specification.
Nov 13, 2026
Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 10+ | $2.2400 | $22.40 |
| 50+ | $1.9700 | $98.50 |
| 90+ | $1.5400 | $138.60 |
| 265+ | $0.7592 | $201.19 |
| 345+ | $0.7339 | $253.20 |
| 460+ | $0.6580 | $302.68 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”