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AQY221R2S

Name: AQY221R2S
Rating: 4.7 (12 reviews)

SSR RELAY SPST-NO 250MA 0-40V

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規格

Series	PhotoMOS™ AQY
Part Status	Active
Base Product Number	AQY221
Mounting Type	Surface Mount
Relay Type	Photo-Coupled Relay (Photorelay)
Circuit	SPST-NO (1 Form A)
Output Type	AC, DC (RF)
Voltage - Input	1.14VDC
Voltage - Load	0 V ~ 40 V
Load Current	250 mA
Termination Style	Gull Wing
Operating Temperature	-40°C ~ 85°C
Package	4-SOP (0.173", 4.40mm)
Supplier Device Package	4-SOP
Approval Agency	BSI, cURus
Packaging	Tube
On-State Resistance (Max)	1.25 Ohms

概述

Description

AQY221R2S is a single-channel optically isolated MOSFET switch (an optocoupler/photocoupler with MOSFET output). The input LED on the control side optically couples to a MOSFET output on the load side, providing galvanic isolation between low‑voltage logic and higher‑voltage/current circuitry. It behaves like a solid-state relay for DC loads: fast, silent, and with long life (no mechanical contacts). The “R2S” suffix denotes a specific variant/package; exact ratings (Vds, Id, Rds(on), isolation voltage, CTR, and IF) vary by part. Check the datasheet for your exact device. Common applications include isolating microcontroller logic from power electronics, DC motor/relay driving, and power-supply sequencing where electrical isolation is needed.

Features

AQY221R2S is a Panasonic Photomos relay (optically isolated, MOSFET output) with two independent channels. Key features:
- Dual MOSFET output (2-channel) for Form A (normally-open) switches
- Input-output isolation for safety and noise immunity
- No mechanical contacts; solid-state with long life and no bounce
- Suitable for AC/DC switching with a load rating up to a modest voltage (typical for Photomos: tens of volts)
- Low input drive current (LED) for easy microcontroller-level control
- Low on-resistance and fast switching
- High isolation voltage between sides (high dielectric strength)
- Surface-mount, reflow-compatible package; RoHS compliant
- Wide operating temperature range with good reliability
Note: exact voltage, on-resistance, and input current specs depend on the specific datasheet revision; please confirm the precise figures for your application.

Package

A 4-pin surface-mount package (SOP-4), i.e., a gull-wing lead-frame type.

Pinout

Pin count: 8 pins (8-pin SOP).
Function: Dual-channel Photomos relay (AQY221R2S) with two LED input diodes and two MOSFET output switches. Each channel is a normally-open (Form A) optically isolated MOSFET pair used to switch loads.

Manufacturer

- Manufacturer: Panasonic Corporation (Panasonic Semiconductor; PhotoMOS/ Semiconductor Solutions).
- What kind of company: A Japanese multinational electronics company that designs and manufactures consumer electronics, components, and industrial electronics (one of the world’s largest electronics manufacturers).

Application

AQY221R2S is a PhotoMOS relay (galvanically isolated solid-state switch). Common applications:
- Replacing mechanical relays in control boards, sensors, and instrumentation
- Isolated switching of digital/analog signals
- Microcontroller interfaces and level-shifting with isolation
- Data acquisition, measurement equipment, and test gear
- Automotive, industrial, and consumer electronics needing compact, quiet switching with isolation

Equivalent

I don’t have live datasheet access. Please confirm the manufacturer or paste the AQY221R2S datasheet (or key specs: type—PhotoMOS/relay, contact form, load voltage/current, on‑resistance, package). With that I’ll list matched equivalents from other vendors.