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STMicroelectronics Z0109NA 2AL2 — Discrete Semiconductors

STMicroelectronics Z0109NA 2AL2 TRIAC, 800V 1A TO-92-3

MPNZ0109NA 2AL2
End of Life

STMicroelectronics Z0109 series logic-level TRIAC, sensitive gate, 800 V off-state, 1 A RMS on-state, single configuration, TO-92-3 through-hole package, Tape & Reel or Cut Tape.

$0.58Ref. price · indicative, final on quote
STMicroelectronics Z0109NA 2AL2 datasheet (PDF)
PackagingTO-226-3, TO-92-3 (TO-226AA) Formed Leads
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

Z0109NA 2AL2 specifications
ParameterValue
Triac typeLogic - Sensitive Gate
MountingThrough Hole
Voltage - off state800 V
Voltage - gate trigger (Vgt)1.3 V
Current - hold (Ih)10 mA
Current - gate trigger (Igt)10 mA
Current - on state (It (RMS))1 A
Current - non rep. surge 50, 60Hz8A, 8.5A
Operating temperature-40°C ~ 125°C (TJ)
PackageTape & Reel (TR); Cut Tape (CT)
ConfigurationSingle
CaseTO-226-3, TO-92-3 (TO-226AA) Formed Leads

Product details

What the 800 V off-state rating means for your load

The Z0109NA 2AL2 is a logic-level TRIAC from STMicroelectronics' Z0109 series, rated for 800 V off-state voltage and 1 A RMS on-state current. The 800 V blocking capability covers 240 VAC mains with margin for line transients — a common requirement for appliance and industrial controls where the TRIAC switches resistive or inductive loads directly from the microcontroller I/O.

Sensitive gate and drive compatibility

Classified as a logic-level (sensitive gate) TRIAC, the Z0109NA 2AL2 triggers with a maximum gate current of 10 mA and a maximum gate voltage of 1.3 V. The 10 mA maximum hold current (Ih) ensures the TRIAC stays latched once triggered, even with lightly inductive loads that might otherwise drop below the holding threshold near the zero-cross.

Package and board integration

Housed in the TO-92-3 through-hole package (TO-226AA with formed leads), the Z0109NA 2AL2 occupies a compact footprint on the PCB. The through-hole leads suit hand-assembly or wave-solder processes, and the formed-lead variant simplifies insertion into pre-drilled boards or sockets.

Frequently asked questions

What is the closest functional second-source for Z0109NA 2AL2?

The Z0109MA 5AL2 is a close functional peer from the same Z0109 series, but it is rated for 600 V off-state instead of 800 V. The Z0109NA 2AL2's 800 V rating provides additional margin for higher mains voltages or transient-prone lines. Both share the same 1 A RMS current rating, sensitive gate, and TO-92-3 package, so a board designed for the Z0109MA 5AL2 can accept the Z0109NA 2AL2 without rewiring — the voltage rating is the only parametric difference.

What compliance documentation does STMicroelectronics provide for Z0109NA 2AL2?

The Z0109NA 2AL2 is ROHS3 compliant. STMicroelectronics provides the standard RoHS declaration of compliance; no additional UL or IEC certification is listed in the product record.