T1212mh

Updated September 20, 2026

Overview

Product sourcing insights & recommendations

24 来源

The phrase 'T1212MH' refers to a 12A 600V Standard Triac originally manufactured by STMicroelectronics. It is a through-hole semiconductor component housed in a TO-220 package, utilizing MESA GLASS technology for AC power control applications. Littlediode Alldatasheet

Product Overview

The T1212MH was widely used in consumer and industrial electronics for phase control and AC switching. Key technical parameters include:

Voltage: 600V ($V_{DRM}$)
Current: 12A ($I_{T(RMS)}$)
Gate Sensitivity: 50mA ($I_{GT}$)
Typical Applications: Light dimmers, motor speed controllers, and static power switches. Littlediode Andysbikeclinic

Market Status & Trends

Discontinuation: The T1212MH is currently Obsolete/Discontinued by STMicroelectronics. Littlediode
Availability: Authentic stock is primarily limited to "New Old Stock" (NOS) from specialized component distributors. Littlediode
Market Shift: The industry has shifted toward high-temperature (Snubberless) triacs like the T1235H series or standard replacements such as the BTA12-600B and BT138-600E. These modern alternatives offer improved thermal performance and simplified design requirements. Littlediode Alibaba

Sourcing Recommendations

Since the original part is obsolete, buyers should look for high-compatibility replacements available on B2B platforms:

Direct Replacement: BTA12-600B (Insulated) or BTB12-600B (Non-insulated) are the most common standard alternatives.
Improved Performance: T1235H-6T is recommended for high-temperature environments. Alibaba
Price Range: Modern replacements typically trade between $0.08 and $0.50 per unit depending on volume and brand. Alibaba Alibaba

Detailed sourcing lists for current replacements and similar 12A 600V triacs are provided in the attached files.

Based on these findings, you may want to:

Sources & References

24 sources cited · Verified industry data & reports

T1212MH Datasheet(PDF) - STMicroelectronics

ALLDATASHEET.COM

The T12XXXH series of triacs uses a high performance MESA GLASS technology. IT(RMS) = 12 A ■ VDRM = 400V to 800V ■ High surge current capability. RoHS peak ...

T1212MH datasheet - Standard Triacs

Digchip

RN4981(TE85L) : 100 mA, 50 V, 2 CHANNEL, NPN AND PNP, Si, SMALL SIGNAL TRANSISTOR. s: Polarity: Complementary ; Package Type: US6, 2-2J1A, 6 PIN. T2049S : ...

DATASHEET SEARCH SITE

Ersin Elektronik

DATASHEET SEARCH SITE. Be sure to visit ChipDocs site for more information http://www.chipdocs.com

T1212MH_484989.PDF Datasheet Download --- IC-ON-LINE

gdcy.com

T1212MH - 700V standard triac 800V standard triac STANDARD TRIACS BOX ALUM UNPAINTED 10X6X3.5,1 BOX UTILITY ALUM 400V standard triac. Size 173.96K / 5 Page ...

T1212MH Thyristor - Buy from Littlediode

LittleDiode

Product specifications. Weight, 0.01 kg. Type, Thyristor. Case, TO220. Manufacturer, ST Microelectronics - STM. Dv/Dt Worst Static, 500. Firing Char-Igt Max.

T1212MH Datasheet, PDF