WF200SC Equivalent & Substitute Parts

Part Overview

The WF200SC is a highly integrated RF transceiver with embedded microcontroller designed for WiFi 802.11b/g/n connectivity in the 2.4GHz band. This component combines RF front-end and baseband processing with an ARM Cortex-M4 MCU in a compact 32-UFQFN package. The WF200SC carries a "Not For New Designs" status, making identification of compatible substitutes essential for ongoing production support and design updates.

Key Parameters

Parameter	WF200SC
Manufacturer	Silicon Labs
Series	WF200
Type	TxRx + MCU
RF Standard	WiFi 802.11b/g/n
Frequency Band	2.4GHz
Data Rate (Max)	72.2Mbps
Power Output	16dBm
Sensitivity	-96.5dBm
Serial Interfaces	SDIO, SPI
Supply Voltage	1.8V ~ 3.3V
Operating Temperature	-40°C ~ 105°C
Package	32-UFQFN Exposed Pad
RoHS Status	ROHS3 Compliant
MSL Rating	2 (1 Year)

Substitute Part Grouping Explanation

The WF200SD qualifies as a direct substitute based on the following alignment criteria:

Matching Parameters:

Same manufacturer (Silicon Labs) and base product series (WF200)
Identical RF standard (WiFi 802.11b/g/n) and protocol support
Same functional type (TxRx + MCU)
Identical maximum data rate (72.2Mbps)
Same serial interfaces (SDIO, SPI)
Identical operating temperature range (-40°C ~ 105°C)
Same package family (32-QFN, 4x4mm footprint)
Matching RoHS3 compliance and MSL rating

Allowable Parameter Variations:

Frequency specification: WF200SC operates at fixed 2.4GHz; WF200SD covers the full 802.11 band range (2.412GHz ~ 2.484GHz)
Supply voltage: WF200SD supports extended range (1.62V ~ 3.6V) versus WF200SC (1.8V ~ 3.3V)
Power output: WF200SD provides 17dBm versus WF200SC at 16dBm
Sensitivity: WF200SD achieves -96.7dBm versus WF200SC at -96.5dBm
Current consumption: WF200SD specifies receive (41.6mA ~ 47.6mA) and transmit (44.6mA ~ 108mA) currents
Product status: WF200SD is Active, supporting new designs

Parameter Comparison

Parameter	WF200SC	WF200SD	Compatibility Notes
Manufacturer	Silicon Labs	Silicon Labs	Identical
Base Series	WF200	WF200	Identical
Type	TxRx + MCU	TxRx + MCU	Identical
RF Standard	WiFi 802.11b/g/n	WiFi 802.11b/g/n	Identical
Frequency	2.4GHz	2.412GHz ~ 2.484GHz	WF200SD covers full band
Data Rate (Max)	72.2Mbps	72.2Mbps	Identical
Power Output	16dBm	17dBm	WF200SD +1dBm higher
Sensitivity	-96.5dBm	-96.7dBm	WF200SD 0.2dB better
Serial Interfaces	SDIO, SPI	SDIO, SPI	Identical
Supply Voltage	1.8V ~ 3.3V	1.62V ~ 3.6V	WF200SD wider range
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	Identical
Package	32-UFQFN Exposed Pad	32-VFQFN Exposed Pad	Same footprint, variant package
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
MSL Rating	2 (1 Year)	2 (1 Year)	Identical
Product Status	Not For New Designs	Active	WF200SD recommended for new designs

Engineering Selection Recommendations

For Existing WF200SC Designs: The WF200SD serves as the direct successor within the WF200 family. Both components share identical core RF performance metrics, protocol support, and package footprint. The WF200SD's Active product status and extended supply voltage range (1.62V ~ 3.6V) provide greater design flexibility compared to the WF200SC's restricted 1.8V ~ 3.3V range.

For New Designs: The WF200SD is the appropriate selection, as it maintains full backward compatibility with WF200SC designs while offering improved specifications (17dBm output versus 16dBm, -96.7dBm sensitivity versus -96.5dBm) and active manufacturer support. Both components carry ROHS3 compliance and identical MSL ratings, ensuring equivalent environmental and reliability characteristics.

Package Consideration: The WF200SC uses 32-UFQFN packaging while the WF200SD uses 32-VFQFN packaging. Both maintain the same 4x4mm footprint and exposed pad configuration, supporting direct PCB layout compatibility without redesign.

Frequently Asked Questions (FAQ)

Q: Can WF200SD replace WF200SC in existing production? A: Yes. The WF200SD is functionally equivalent with identical RF performance, protocol support, and package footprint. The extended supply voltage range and Active product status make it suitable for direct substitution in ongoing production.

Q: What are the key differences between WF200SC and WF200SD? A: The primary differences are product status (WF200SC is Not For New Designs; WF200SD is Active), supply voltage range (WF200SD supports 1.62V ~ 3.6V versus WF200SC's 1.8V ~ 3.3V), power output (17dBm versus 16dBm), and package variant (VFQFN versus UFQFN). Both maintain identical footprint and core RF specifications.

Q: Are the packages interchangeable? A: Yes. Both the 32-UFQFN and 32-VFQFN packages share the same 4x4mm footprint and exposed pad configuration, allowing direct PCB layout compatibility without modification.

Q: Does WF200SD support the same serial interfaces? A: Yes. Both components support identical SDIO and SPI serial interfaces, ensuring firmware and hardware interface compatibility.

Q: What is the frequency coverage difference? A: The WF200SC operates at 2.4GHz, while the WF200SD covers the full 802.11 band range (2.412GHz ~ 2.484GHz). This expanded coverage in the WF200SD provides greater regional regulatory flexibility without functional impact on standard 2.4GHz WiFi operation.

Q: Are compliance certifications identical? A: Yes. Both components carry ROHS3 compliance, identical MSL ratings (2, 1 Year), and matching ECCN/HTSUS classifications, ensuring equivalent regulatory and environmental compliance.

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