AS3930-BTST Equivalent & Substitute Parts

Part Overview

The AS3930-BTST is an RFID Reader IC manufactured by ScioSense, operating in the 110kHz to 150kHz frequency range with SPI interface and 2.4V to 3.6V supply voltage. This component is packaged in a 16-TSSOP surface mount configuration. The product is currently marked as Obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement planning.

Substiute Parts

AS3930-BTST

ScioSenseIn Stock: 4370AS3930-BTST Datasheet

Current PartRFQ

AS3930-BQFT

ScioSenseIn Stock: 10062AS3930-BQFT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AS3930-BTST is determined by strict equivalence across the following critical parameters:

• Base product number (AS3930 family)
• RFID reader functionality and frequency range (110kHz ~ 150kHz)
• SPI digital interface
• Supply voltage range (2.4V ~ 3.6V)
• Operating temperature range (-40°C ~ 85°C)
• RoHS compliance status
• Surface mount technology

The AS3930-BQFT qualifies as a direct substitute based on matching all functional and electrical parameters. The primary difference is the package configuration: the substitute uses 16-VQFN with exposed pad instead of 16-TSSOP, and includes different packaging format (Tape & Reel versus bulk).

Parameter Comparison

Engineering Selection Recommendations

The AS3930-BQFT serves as the manufacturer-recommended substitute for the obsolete AS3930-BTST. Both components maintain identical electrical specifications, frequency operation, and interface characteristics. The substitute is available in higher inventory quantities (9962 Pcs versus 4300 Pcs).

Selection between these parts is determined by PCB layout and packaging requirements. The AS3930-BTST uses 16-TSSOP packaging, while the AS3930-BQFT uses 16-VQFN with exposed pad. The VQFN package offers improved thermal performance through the exposed pad feature. The AS3930-BQFT carries a higher moisture sensitivity level (MSL 3 versus MSL 1), requiring controlled storage conditions during handling.

Both components are RoHS compliant and carry identical REACH and ECCN classifications.

Frequently Asked Questions (FAQ)

Q: Can AS3930-BQFT directly replace AS3930-BTST in existing designs?

A: Electrical and functional compatibility is complete. PCB layout modification is required due to package differences: 16-TSSOP versus 16-VQFN. Pin assignments must be verified against the respective datasheets to ensure correct signal routing.

Q: What is the primary difference between these two parts?

A: The main difference is package configuration. AS3930-BTST uses 16-TSSOP (0.173" width, 4.40mm), while AS3930-BQFT uses 16-VQFN with exposed pad (4x4mm). Both maintain identical electrical performance and frequency specifications.

Q: Are there moisture sensitivity considerations?

A: Yes. AS3930-BTST has MSL 1 (unlimited shelf life), while AS3930-BQFT has MSL 3 (168-hour limit at 30°C/60% RH). The substitute requires controlled storage and handling procedures.

Q: Why is AS3930-BQFT marked "Not For New Designs"?

A: This status indicates the part is in mature production phase. It remains available for existing applications but may have limited long-term availability. Consult with ScioSense for extended lifecycle support.

Q: Are both parts RoHS compliant?

A: Yes. Both AS3930-BTST and AS3930-BQFT are RoHS compliant and carry identical REACH and ECCN classifications (EAR99).