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Panasonic Electric Works AQY221N2SY — Signal Relays

AQY221N2SY Panasonic PhotoMOS, SPST-NO, 120 mA, 40 V, 4-SOP

MPNAQY221N2SY
Obsolete

Panasonic Electric Works PhotoMOS™ AQY series, Signal Relays, AQY221N2SY, SPST-NO (1 Form A), 120 mA, 0 V ~ 40 V, Surface Mount, 4-SOP, Gull Wing.

$5.0800Ref. price · indicative, final on quote
Panasonic Electric Works AQY221N2SY datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

AQY221N2SY specifications
ParameterValue
SeriesPhotoMOS™ AQY
Output typeAC, DC (RF)
MountingSurface Mount
Voltage - load0 V ~ 40 V
Voltage - input1.14VDC
Load current120 mA
CircuitSPST-NO (1 Form A)
PackageTape & Reel (TR)
Case4-SOP (0.173\", 4.40mm)
Termination styleGull Wing
On-State resistance12.5 Ohms

Product details

Obsolete PhotoMOS relay — what the specs mean for a replacement search

The AQY221N2SY is a Panasonic PhotoMOS AQY series solid-state relay, SPST-NO (1 Form A), rated for 120 mA load current at 0–40 V AC/DC (RF-rated output). Its 12.5 Ohm max on-state resistance means the relay drops about 1.5 V at full load — that voltage drop is the main thermal contributor in a signal path, not the load current itself.

Surface-mount only; the tape-and-reel packaging (TR) is the standard delivery format for pick-and-place assembly.

Lifecycle reality — obsolete, no direct successor

Panasonic has marked the AQY221N2SY as obsolete.

Frequently asked questions

What is the AQY221N2SY used for?

It is a solid-state relay (PhotoMOS AQY series) switching AC or DC signals up to 120 mA and 40 V, with an RF-rated output path. The SPST-NO contact and low 1.14 V input make it suitable for signal routing, multiplexing, and low-power load switching in test equipment, instrumentation, and telecom cards.