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STMicroelectronics XL0840 — Memory (DRAM / SRAM / Flash / EEPROM)
STMicroelectronics

XL0840 SCR, Sensitive Gate, 400 V, 800 mA, TO-92-3

MPNXL0840
End of Life

XL0840, Sensitive Gate SCR, 400 V Off State, 800 mA RMS On State, 200 µA Gate Trigger, TO-92-3 Through Hole, -40°C to 125°C.

$0.55Ref. price · indicative, final on quote
XL0840 datasheet
PackagingTO-226-3, TO-92-3 (TO-226AA)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

XL0840 Technical Specifications
ParameterValue
SCR typeSensitive Gate
Mounting typeThrough Hole
Voltage - off state400 V
Voltage - on state (Vtm)1.95 V
Voltage - gate trigger (Vgt)800 mV
Current - hold (Ih)5 mA
Current - off state1 µA
Current - gate trigger (Igt)200 µA
Current - on state (It (AV))500 mA
Current - on state (It (RMS))800 mA
Current - non rep. surge 50, 60Hz7A, 8A
Operating temperature-40°C ~ 125°C
PackageBag
CaseTO-226-3, TO-92-3 (TO-226AA)

Product details

What this SCR is and where it fits

The XL0840 is a sensitive-gate silicon controlled rectifier in a TO-92-3 through-hole package, rated for 400 V off-state and 800 mA RMS on-state continuous current. The 200 µA maximum gate trigger current lets it switch directly from a microcontroller GPIO, a comparator output, or a low-side sensor — no separate driver transistor needed.

Lifecycle and sourcing

The XL0840 carries an Active product status and ROHS3 compliance. No end-of-life notice or last-time-buy window is published. It is sourced through independent distribution and quoted to order against an RFQ — availability and current pricing confirmed at quote time.

Frequently asked questions

What is the gate trigger current of the XL0840?

The maximum gate trigger current (Igt) is 200 µA. This low threshold lets the SCR be driven directly from a logic output or a low-current sensor without an intermediate driver stage.

What is the closest functional second-source for the XL0840?

The X00602MA 1AA2 is a sensitive-gate, through-hole, TO-92 SCR with a 600 V off-state rating. It is a functional alternative for designs that can accept the higher voltage headroom.