WF111-A-V1 Equivalent & Substitute Parts

Part Overview

The WF111-A-V1 is a WiFi 802.11b/g/n transceiver module operating at 2.4GHz with integrated chip antenna, designed for surface mount applications. This module integrates RF transmission and reception capabilities with a maximum data rate of 72.2Mbps and output power of 17dBm. The product is currently obsolete, necessitating identification of functionally compatible alternatives for ongoing system support and new designs requiring equivalent RF performance characteristics.

Substiute Parts

WF111-A-V1

Silicon LabsIn Stock: 1048WF111-A-V1 Datasheet

Current PartRFQ

RS9116N-DB00-CC1-B00

Silicon LabsIn Stock: 5348RS9116N-DB00-CC1-B00 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The RS9116N-DB00-CC1-B00 qualifies as a substitute based on the following alignment criteria:

Common RF Operating Parameters:

• Manufacturer: Silicon Labs (same source)
• Mounting Type: Surface Mount (identical)
• Operating Temperature Range: -40°C ~ 85°C (identical)
• Frequency Coverage: 2.4GHz (includes WF111-A-V1 operating band)
• Protocol Support: 802.11b/g/n (backward compatible with WF111-A-V1)
• Product Status: Active (ensures ongoing availability and support)
• RoHS Compliance: Maintained

Performance Characteristics: The RS9116N-DB00-CC1-B00 exceeds WF111-A-V1 specifications in output power (18dBm vs 17dBm) and receiver sensitivity (-102dBm vs -97dBm), providing improved RF performance margins. The substitute supports extended protocol coverage including 802.11a/5GHz and Bluetooth v5.0, though these are supplementary to the core WiFi 802.11b/g/n requirement.

Parameter Comparison

Engineering Selection Recommendations

The RS9116N-DB00-CC1-B00 is the manufacturer-recommended substitute for the obsolete WF111-A-V1. Selection is supported by:

• Product Continuity: Active product status ensures long-term availability, manufacturing support, and supply chain stability compared to the obsolete WF111-A-V1.
• Compliance Alignment: Both modules maintain RoHS compliance and identical ECCN classification (5A992C), supporting regulatory requirements without modification.
• RF Performance: The substitute meets or exceeds the original module across critical RF parameters including output power and receiver sensitivity, ensuring equivalent or improved link budget performance in 2.4GHz WiFi 802.11b/g/n applications.
• Thermal Compatibility: Identical operating temperature range (-40°C ~ 85°C) ensures thermal design compatibility with existing thermal management solutions.
• Supply Voltage Consideration: The substitute requires minimum 3V supply versus the original 1.7V minimum. System power supply design must accommodate this higher minimum voltage requirement.

Frequently Asked Questions (FAQ)

Q: Can the RS9116N-DB00-CC1-B00 directly replace the WF111-A-V1 in existing designs?

A: The RS9116N-DB00-CC1-B00 provides functional RF equivalence for WiFi 802.11b/g/n operation at 2.4GHz. However, the minimum supply voltage increases from 1.7V to 3V, requiring verification that system power supplies can meet this requirement. Serial interface compatibility (SPI, UART, USB vs PIO, SDIO, SPI) must be evaluated against specific application firmware and hardware implementation.

Q: What are the key differences in electrical characteristics?

A: The substitute provides improved RF performance with 18dBm output power versus 17dBm, and -102dBm sensitivity versus -97dBm. Data rate specification differs (54Mbps vs 72.2Mbps), though both support 802.11b/g/n protocols. Current consumption ranges are broader in the substitute, reflecting expanded protocol support including Bluetooth v5.0.

Q: Are there package or mounting differences?

A: Both modules are surface mount devices. The WF111-A-V1 uses a Module package with integrated chip antenna. The RS9116N-DB00-CC1-B00 uses a 155-FLGA Module package with antenna not included, requiring external antenna integration if 5GHz operation is utilized. For 2.4GHz-only applications, antenna selection must match the original integrated antenna performance.

Q: What compliance certifications apply to the substitute?

A: The RS9116N-DB00-CC1-B00 maintains RoHS compliance and identical ECCN classification (5A992C) as the original WF111-A-V1, supporting equivalent regulatory and export control requirements.

Q: Is the substitute suitable for new designs?

A: Yes. The RS9116N-DB00-CC1-B00 is an active product with manufacturer support, making it the appropriate choice for new designs requiring WiFi 802.11b/g/n transceiver functionality at 2.4GHz. The extended protocol support (802.11a/5GHz, Bluetooth v5.0) provides design flexibility for future feature expansion.