All Alternatives

Alternatives to onsemi KST2222AMTF_NL

onsemi KST2222AMTF_NL and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.

KST2222AMTF_NL compared against its qualified second sources
KST2222AMTF_NLonsemiMMBT2222A-TPMCC (Micro Commercial Components)MMBT2222A-7-FDiodes Incorporated+2more
FFF CompatibilityBoth components use the standard SOT-23 package with identical Pin 1 (Base), Pin 2 (Emitter), Pin 3 (Collector) pinouts.The physical dimensions and surface mount footprints match exactly.Key electrical characteristics (V_CEO = 40 V, I_C = 600 mA, P_D = 350 mW, f_T = 300 MHz) meet or exceed the original part's specifications.Standard SOT-23 pin mapping of Pin 1 (Base), Pin 2 (Emitter), and Pin 3 (Collector) matches the original part.Uses the standard SOT-23 footprint with matching mechanical dimensions.Primary parameters (V_CEO = 40 V, I_C = 600 mA) are identical, and the 310 mW power rating is virtually identical in standard designs.
AI Summary

KST2222AMTF_NL by onsemi: Bipolar Transistors - BJT NPN/40V/0.6A/100-300.

This is a high-confidence drop-in replacement with an identical 350 mW maximum power dissipation and 300 MHz transition frequency. It is actively manufactured and highly cost-effective.

  • Exact power rating match of 350 mW ensuring no thermal compromises
  • Identical 300 MHz transition frequency (f_T) for high-speed switching performance
  • Drop-in pin-to-pin compatible replacement in standard SOT-23 package

A highly reliable drop-in replacement from a top-tier manufacturer. The power dissipation of 310 mW is slightly lower than the original's 350 mW, but this minor difference is negligible in nearly all standard circuit layouts.

  • Produced by a leading tier-1 discrete semiconductor manufacturer
  • Identical 300 MHz transition frequency (f_T) ensuring matched switching speeds
  • Drop-in pin-to-pin compatible replacement in standard SOT-23 package
  • Slightly lower maximum power dissipation: 310 mW vs 350 mW.
Lifecycle StatusObsoleteActiveActive
Market AvailabilityDiscontinuedIn stockIn stock
REACHUnknownREACHREACH
RoHSRoHSRoHSRoHS
DescriptionBipolar Transistors - BJT NPN/40V/0.6A/100-300Bipolar (BJT) Transistor NPN 40 V 600 mA 300MHz 350 mW Surface Mount SOT-23Bipolar (BJT) Transistor NPN 40 V 600 mA 300MHz 310 mW Surface Mount SOT-23-3
ManufactureronsemiMCC (Micro Commercial Components)Diodes Incorporated
TypeBipolar Transistors - BJTTransistorsTransistors
DatasheetOpenOpenOpen
Lead TimeUnknown22 weeks48 weeks
Country of Origin---
Export Control Class NumberEAR99EAR99EAR99
HTSUS Code8541290095--
Moisture Sensitivity Level---

Unlock all 4 alternatives

  • Find & compare verified second sources
  • Spot risk early with real-time part monitoring
  • Stay compliant and production-ready

You searched one part. Parter watches your whole BOM.

  1. All your BOM, at once

    Parter maps every line to live stock, lead time, lifecycle and compliance data across the entire market — not part by part.

  2. Hear about problems before they hit production

    Allocation, EOL and last-time-buy notices surface the moment they appear, not when your buyer's PO bounces.

  3. Qualified replacements in minutes, not days

    Every at-risk line gets form-fit-function matches like the ones above — deltas flagged, evidence attached. Review, push to your BOM, and Parter starts watching the new part too.

Frequently asked questions

Yes. The onsemi KST2222AMTF_NL is marked obsolete, so the manufacturer has discontinued it and any remaining supply is limited to distributor stock. The qualified second sources on this page are active parts you can design in today.

Schedule a demo

See Parter in action

Discover how Parter can help your hardware team:

  • Streamline your hardware operations with AI
  • Detect and prevent lifecycle disruptions
  • Accelerate product development
  • Stay compliant and production-ready