SC307N Equivalent & Substitute Parts

Part Overview

The SC307N is an internally driven piezo buzzer manufactured by Mallory Sonalert Products Inc., designed for panel mount applications with screw terminal and quick connect tab termination. This component operates as a single-tone indicator with a frequency of 2.9kHz and sound pressure level of 80dB at 3V measured at 61cm. The part is currently active in production with 1033 units in stock. Alternative models may be required due to inventory constraints, compliance requirements, or specific application parameters such as current supply specifications or RoHS compliance needs.

Substiute Parts

SC307N

Mallory Sonalert Products Inc.In Stock: 1045SC307N Datasheet

Current PartRFQ

SC307NR

Mallory Sonalert Products Inc.In Stock: 1268SC307NR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The SC307NR is classified as a direct substitute for the SC307N based on the following matching parameters:

• Identical manufacturer (Mallory Sonalert Products Inc.)
• Identical series designation (SC)
• Identical technology platform (Piezo, internally driven)
• Identical voltage range (3 ~ 7V)
• Identical frequency (2.9kHz)
• Identical sound pressure level (80dB @ 3V, 61cm)
• Identical mounting type (Panel Mount)
• Identical termination style (Screw Terminal, Quick Connect Tab - 0.250")
• Identical physical diameter (1.687" / 42.85mm)
• Identical operating temperature range (-30°C ~ 65°C)

The primary differences between these parts are current supply specification and physical height, which do not preclude substitution within the SC series design envelope.

Parameter Comparison

Engineering Selection Recommendations

Both SC307N and SC307NR are active production components from Mallory Sonalert Products Inc. with identical electrical performance characteristics. The SC307NR offers enhanced compliance status with ROHS3 certification and dual approval agency ratings (cUL and UL) compared to the SC307N, which carries UL approval only and is RoHS non-compliant. The SC307NR also features a reduced seated height of 1.399" (35.54mm) versus 1.809" (45.96mm) for the SC307N, which may be advantageous in space-constrained panel mount applications. The SC307NR supports a wider current supply range of 4 ~ 20mA compared to the SC307N's 4 ~ 12mA specification. Selection between these parts should be based on compliance requirements, available panel depth, and circuit current supply capability.

Frequently Asked Questions (FAQ)

Q: Can SC307NR replace SC307N in existing designs? A: Yes. Both parts share identical voltage range, frequency, sound pressure level, mounting type, and termination specifications. The SC307NR is mechanically and electrically compatible as a direct substitute.

Q: What is the primary difference between these parts? A: The SC307NR has a lower seated height (1.399" vs 1.809"), supports higher maximum current (20mA vs 12mA), and carries ROHS3 compliance with dual agency approval (cUL, UL) versus the SC307N's single UL approval and RoHS non-compliance status.

Q: Does the height difference affect panel mount compatibility? A: The SC307NR's reduced height of 1.399" (35.54mm) may provide better fit in applications with limited panel depth. Both parts maintain the same 1.687" (42.85mm) diameter and identical termination specifications.

Q: Are there any electrical performance differences? A: No. Both parts deliver identical voltage range (3 ~ 7V), frequency (2.9kHz), and sound pressure level (80dB @ 3V, 61cm). The SC307NR's wider current range (4 ~ 20mA) accommodates broader circuit designs without affecting acoustic output.

Q: Which part should be selected for new designs? A: Selection depends on compliance requirements and available inventory. The SC307NR is preferred for applications requiring RoHS3 compliance or dual agency certification. Both parts are suitable for applications within the specified operating temperature range of -30°C to 65°C.