AT-1420-ST-2-R Equivalent & Substitute Parts

Part Overview

The AT-1420-ST-2-R is an externally driven electromechanical magnetic buzzer manufactured by PUI Audio, Inc., designed for applications requiring a single-tone audible alert at 1.5V nominal operation. This component is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations. The part operates at 2.048kHz with a sound pressure level of 80dB at 1.5V measured at 10cm, utilizing through-hole PC pin termination for direct PCB mounting.

Substiute Parts

AT-1420-ST-2-R

PUI Audio, Inc.In Stock: 914AT-1420-ST-2-R Datasheet

Current PartRFQ

AT-1420-ST-R

PUI Audio, Inc.In Stock: 1061AT-1420-ST-R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT-1420-ST-2-R is determined by strict equivalence across the following critical parameters:

• Rated voltage: 1.5V nominal operation
• Voltage operating range: 1 ~ 3V
• Frequency: 2.048kHz single-tone output
• Sound pressure level: 80dB @ 1.5V, 10cm
• Technology: Electromechanical/Magnetic transducer
• Driver type: Externally driven
• Mounting: Through hole with PC pin termination
• Physical dimensions: 13.80mm x 12.00mm footprint, 8.00mm maximum seated height
• Operating temperature range: -20°C ~ 70°C

The AT-1420-ST-R qualifies as a direct substitute based on identical performance in voltage rating, frequency, sound pressure level, physical dimensions, temperature range, and mounting configuration. Differences in current supply and product status do not affect functional interchangeability within the specified electrical and mechanical constraints.

Parameter Comparison

Engineering Selection Recommendations

The AT-1420-ST-R is a direct functional equivalent to the obsolete AT-1420-ST-2-R. Both components maintain identical electrical performance characteristics, physical form factor, and operating parameters across voltage, frequency, sound pressure level, and temperature range.

The primary distinction is product status: AT-1420-ST-R is active and available in production quantities, whereas AT-1420-ST-2-R is obsolete. The AT-1420-ST-R additionally carries ROHS3 compliance certification, meeting current regulatory requirements for electronic component manufacturing.

Current supply differs between the two parts (30mA versus 70mA). This variance reflects component-level design differences but does not affect functional interchangeability, as both operate within the same voltage and frequency specifications. Circuit design must accommodate the higher current draw of the substitute part.

For new designs and ongoing system support, AT-1420-ST-R is the appropriate selection based on active product status and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can AT-1420-ST-R replace AT-1420-ST-2-R in existing designs?

A: Yes. Both components share identical rated voltage (1.5V), operating voltage range (1–3V), frequency (2.048kHz), sound pressure level (80dB @ 1.5V, 10cm), physical dimensions (13.80mm x 12.00mm), and mounting configuration (through-hole PC pins). Functional substitution is direct.

Q: What is the impact of the 40mA current difference?

A: The AT-1420-ST-R draws 70mA compared to 30mA for the AT-1420-ST-2-R. Circuit power supply and current-limiting components must be rated for the higher current. This does not affect acoustic output or electrical interface compatibility.

Q: Are there packaging differences between these parts?

A: AT-1420-ST-2-R packaging is not specified in available data. AT-1420-ST-R is supplied in Tray packaging. Confirm packaging requirements for your procurement and assembly process.

Q: Does ROHS3 compliance affect compatibility?

A: No. ROHS3 compliance of the AT-1420-ST-R indicates adherence to current environmental and material restrictions. This certification does not alter electrical or mechanical compatibility with designs originally specified for AT-1420-ST-2-R.

Q: Are both parts suitable for the full -20°C to 70°C operating temperature range?

A: Yes. Both AT-1420-ST-2-R and AT-1420-ST-R maintain identical operating temperature specifications of -20°C to 70°C.