MICRF022YM-FS24 Equivalent & Substitute Parts

Part Overview

The MICRF022YM-FS24 is an RF receiver module designed for ASK/OOK modulation in the 300–440 MHz frequency band. This surface-mount component operates at -97 dBm sensitivity with a maximum data rate of 10 kbps, making it suitable for remote keyless entry (RKE) applications. The device is actively manufactured by Microchip Technology and maintains ROHS3 compliance with unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent functional performance can be achieved within the allowed electrical and mechanical parameter ranges for RF receiver applications.

Key Parameters

Parameter	Value
Frequency Range	300 MHz ~ 440 MHz
Sensitivity	-97 dBm
Data Rate (Max)	10 kbps
Modulation/Protocol	ASK, OOK
Supply Voltage	4.75 V ~ 5.5 V
Receiving Current	2.2 mA
Operating Temperature	-40°C ~ 85°C
Package	8-SOIC (0.154", 3.90 mm Width)
Mounting Type	Surface Mount
Product Status	Active
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for RF receiver components is determined by the following criteria:

Frequency Compatibility: The substitute must operate within or overlap the primary frequency band (300–440 MHz). The MICRF230YQS operates at 433.92 MHz, which falls within the upper portion of the MICRF022YM-FS24 frequency range.

Modulation Support: The substitute must support equivalent or compatible modulation schemes. The MICRF230YQS uses ISM modulation, which differs from the ASK/OOK specification of the primary part.

Sensitivity and Data Rate: The substitute must meet or exceed the sensitivity requirement (-97 dBm) and support the required data rate (10 kbps minimum). The MICRF230YQS provides -112 dBm sensitivity and 20 kbps data rate, exceeding both specifications.

Supply Voltage Range: The substitute voltage range must overlap with the primary part's range (4.75–5.5 V). The MICRF230YQS operates at 4.6–5.5 V, providing broader compatibility.

Operating Temperature: The substitute must support the required temperature range. The MICRF230YQS extends to -40°C ~ 105°C, exceeding the primary part's -40°C ~ 85°C range.

Package and Mounting: Physical compatibility is required. The MICRF230YQS uses a 16-QSOP package versus the 8-SOIC package of the primary part, requiring PCB layout modification.

Parameter Comparison

Parameter	MICRF022YM-FS24	MICRF230YQS
Manufacturer	Microchip Technology	Microchip Technology
Frequency	300 MHz ~ 440 MHz	433.92 MHz
Sensitivity	-97 dBm	-112 dBm
Data Rate (Max)	10 kbps	20 kbps
Modulation/Protocol	ASK, OOK	ISM
Supply Voltage	4.75 V ~ 5.5 V	4.6 V ~ 5.5 V
Receiving Current	2.2 mA	6 mA
Operating Temperature	-40°C ~ 85°C	-40°C ~ 105°C
Package	8-SOIC (0.154", 3.90 mm Width)	16-QSOP (0.154", 3.90 mm Width)
Mounting Type	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Both the MICRF022YM-FS24 and MICRF230YQS are active products manufactured by Microchip Technology with ROHS3 compliance and unlimited moisture sensitivity ratings. Selection between these components depends on application-specific requirements:

The MICRF022YM-FS24 is appropriate for applications requiring ASK/OOK modulation within the 300–440 MHz band with lower power consumption (2.2 mA receiving current) and compact 8-SOIC packaging.

The MICRF230YQS is appropriate for ISM band applications at 433.92 MHz with enhanced sensitivity (-112 dBm), higher data rate capability (20 kbps), and extended operating temperature range (-40°C ~ 105°C). The 16-QSOP package requires PCB redesign and accommodates higher receiving current (6 mA).

Substitution is feasible only when the application can accommodate modulation protocol differences, package footprint changes, and increased power consumption.

Frequently Asked Questions (FAQ)

Q: Can the MICRF230YQS directly replace the MICRF022YM-FS24 on existing PCBs?

A: No. The MICRF230YQS uses a 16-QSOP package while the MICRF022YM-FS24 uses an 8-SOIC package. PCB layout and footprint redesign is required.

Q: What is the primary difference in modulation between these parts?

A: The MICRF022YM-FS24 supports ASK and OOK modulation schemes. The MICRF230YQS uses ISM modulation. These are distinct protocols and require different signal encoding in the application firmware or transmitter design.

Q: Does the MICRF230YQS meet the sensitivity requirement of the MICRF022YM-FS24?

A: Yes. The MICRF230YQS provides -112 dBm sensitivity, which exceeds the -97 dBm requirement of the MICRF022YM-FS24.

Q: What is the impact of increased receiving current in the MICRF230YQS?

A: The MICRF230YQS draws 6 mA during reception compared to 2.2 mA for the MICRF022YM-FS24. This represents a 2.7× increase in power consumption and must be evaluated against power budget constraints in battery-powered applications.

Q: Are both parts RoHS compliant?

A: Yes. Both the MICRF022YM-FS24 and MICRF230YQS are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity ratings.

Q: Can the MICRF230YQS operate at the supply voltage of the MICRF022YM-FS24?

A: Yes. The MICRF230YQS supply voltage range (4.6–5.5 V) fully encompasses the MICRF022YM-FS24 range (4.75–5.5 V).

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