REF3312AIRSER Equivalent & Substitute Parts

Part Overview

The REF3312AIRSER is a Series Voltage Reference IC manufactured by Texas Instruments, designed for precision voltage reference applications requiring fixed 1.25V output with ±0.15% tolerance. This Active product operates across a wide input voltage range of 1.7V to 5.5V and delivers 5 mA output current with minimal supply current consumption of 8.5µA. The device is packaged in an 8-UQFN (1.5x1.5mm) surface mount configuration and is ROHS3 compliant with MSL Level 1 rating. Substitute parts are identified when packaging format differs while maintaining identical electrical performance specifications.

Substiute Parts

REF3312AIRSER

Texas InstrumentsIn Stock: 24476REF3312AIRSER Datasheet

Current PartRFQ

REF3312AIRSET

Texas InstrumentsIn Stock: 3029REF3312AIRSET Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the REF3312AIRSER is determined by electrical parameter equivalence combined with packaging format compatibility. The primary substitution criterion is the maintenance of all electrical specifications: fixed 1.25V output, ±0.15% tolerance, 5 mA output current, 30ppm/°C temperature coefficient, 35µVp-p noise performance, 1.7V to 5.5V input voltage range, and 8.5µA supply current. The REF3312AIRSET qualifies as a parametric equivalent because it maintains identical electrical performance across all specified parameters. The distinction between these parts is packaging format: REF3312AIRSER is supplied in Cut Tape (CT) & Digi-Reel® format, while REF3312AIRSET is supplied in Tape & Reel (TR) format. Both parts share the same 8-UQFN (1.5x1.5mm) physical package, identical RoHS3 compliance, and MSL Level 1 rating.

Parameter Comparison

Engineering Selection Recommendations

Selection between REF3312AIRSER and REF3312AIRSET is determined by procurement and assembly requirements rather than electrical performance. Both parts are Active products from Texas Instruments with identical electrical specifications and regulatory compliance. REF3312AIRSER in Cut Tape & Digi-Reel® format is suitable for lower-volume applications, prototype development, and manual assembly processes. REF3312AIRSET in Tape & Reel format is optimized for high-volume automated assembly operations and production environments. Both parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring equivalent reliability and environmental performance. The choice between these variants should be based on production volume, assembly methodology, and supply chain logistics rather than technical performance criteria.

Frequently Asked Questions (FAQ)

Q: Are REF3312AIRSER and REF3312AIRSET electrically interchangeable?

A: Yes. Both parts deliver identical electrical performance with 1.25V fixed output, ±0.15% tolerance, 5 mA output current, 30ppm/°C temperature coefficient, and 35µVp-p noise specification across the full -40°C to 125°C operating range.

Q: What is the difference between Cut Tape & Digi-Reel® and Tape & Reel packaging?

A: Cut Tape & Digi-Reel® format supplies individual components on tape segments suitable for manual handling and lower-volume applications. Tape & Reel format provides continuous reel packaging optimized for automated pick-and-place assembly equipment in production environments.

Q: Can I use REF3312AIRSET as a direct replacement for REF3312AIRSER in my design?

A: Yes, from an electrical and mechanical standpoint. Both parts use the identical 8-UQFN (1.5x1.5mm) package with the same pinout and footprint. The substitution is valid for PCB assembly and circuit operation.

Q: Do both parts have the same compliance certifications?

A: Yes. Both REF3312AIRSER and REF3312AIRSET are ROHS3 compliant with MSL Level 1 rating, REACH Unaffected status, and EAR99 ECCN classification.

Q: Which part should I specify for high-volume production?

A: REF3312AIRSET in Tape & Reel format is the standard choice for high-volume automated assembly. REF3312AIRSER in Cut Tape & Digi-Reel® format is appropriate for prototype, development, and low-volume applications.

Q: Are there any thermal or performance differences between these parts?

A: No. Both parts maintain identical temperature coefficient of 30ppm/°C, supply current of 8.5µA, and all other electrical specifications across the full operating temperature range.