SI4010-B1-GS Equivalent & Substitute Parts

Part Overview

The SI4010-B1-GS is an RF transmitter IC from Silicon Labs' EZRadio® series, designed for FSK and OOK modulation across the 27MHz to 960MHz frequency range. This device integrates an 8051 MCU core with crystal-less operation capability, delivering 10dBm output power at up to 100kBaud data rates. The component is currently classified as obsolete, necessitating identification of active equivalent parts to maintain design continuity and ensure supply chain availability for new production and legacy system support.

Substiute Parts

SI4010-B1-GS

Silicon LabsIn Stock: 1031SI4010-B1-GS Datasheet

Current PartRFQ

SI4010-C2-GS

Silicon LabsIn Stock: 5804SI4010-C2-GS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SI4010-B1-GS is determined by strict equivalence across the following critical parameters:

• Frequency coverage: 27MHz ~ 960MHz
• Modulation support: FSK and OOK protocols
• Maximum data rate: 100kBaud
• Output power: 10dBm
• Supply voltage range: 1.8V ~ 3.6V
• Operating temperature range: -40°C ~ 85°C
• Package configuration: 14-SOIC form factor
• Core functionality: 8051 MCU with crystal-less operation capability
• Memory capacity: 4kB RAM
• Interface type: PCB surface mount antenna

The SI4010-C2-GS meets all electrical and mechanical parameters required for direct substitution. The primary distinction is product status: SI4010-C2-GS is active and available in production quantities, whereas SI4010-B1-GS is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The SI4010-C2-GS is the direct functional equivalent to the SI4010-B1-GS. All electrical characteristics, mechanical dimensions, and operational parameters are identical. The SI4010-C2-GS carries active product status with confirmed ROHS3 compliance and REACH unaffected designation, providing regulatory assurance for new designs and production continuity.

Selection of SI4010-C2-GS over the obsolete SI4010-B1-GS is justified by:

• Confirmed availability in production quantities (5758 units in stock versus 997 for the obsolete variant)
• Active product status ensuring long-term supply chain support
• Verified regulatory compliance certifications
• Identical electrical and mechanical specifications enabling direct PCB-level substitution without design modification

Frequently Asked Questions (FAQ)

Q: Can SI4010-C2-GS replace SI4010-B1-GS in existing designs?

A: Yes. The SI4010-C2-GS is electrically and mechanically identical to SI4010-B1-GS. No circuit modifications, firmware changes, or PCB layout adjustments are required. The 14-SOIC package footprint, pinout, and electrical interface are fully compatible.

Q: What is the difference between SI4010-B1-GS and SI4010-C2-GS?

A: The primary difference is product lifecycle status. SI4010-B1-GS is obsolete; SI4010-C2-GS is active. All functional parameters—frequency range, modulation type, data rate, output power, supply voltage, temperature range, and package configuration—are identical. SI4010-C2-GS includes documented ROHS3 compliance and REACH unaffected status.

Q: Are there any packaging differences?

A: Both parts use the 14-SOIC (0.154", 3.90mm Width) package. SI4010-B1-GS packaging details were not specified in the source data. SI4010-C2-GS is supplied in Tube packaging. This does not affect electrical performance or PCB compatibility.

Q: What applications are supported by these parts?

A: Both parts are suitable for garage openers, remote keyless entry (RKE) systems, and security alarm applications across the 27MHz to 960MHz frequency band.

Q: Are there any compliance or certification considerations?

A: SI4010-C2-GS is ROHS3 compliant and REACH unaffected. Compliance status for SI4010-B1-GS was not provided. For new designs or regulated applications, SI4010-C2-GS is the recommended selection.