MSR516NP Equivalent & Substitute Parts

Part Overview

The MSR516NP is an internally driven piezo buzzer manufactured by Mallory Sonalert Products Inc., designed for indicator applications requiring pulse or fast operating modes. This 23mm through-hole component operates across a 4–14V DC range with a frequency of 3.9kHz and delivers 75dB SPL at 4V measured at 61cm. The part is currently classified as obsolete, making identification of suitable substitutes essential for ongoing design support and component procurement.

Substiute Parts

MSR516NP

Mallory Sonalert Products Inc.In Stock: 874MSR516NP Datasheet

Current PartRFQ

MSR516NPR

Mallory Sonalert Products Inc.In Stock: 747MSR516NPR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MSR516NP is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Driver circuitry type: Indicator, Internally Driven
• Input type: DC
• Frequency: 3.9kHz
• Technology: Piezo
• Operating mode: Pulse, Fast
• Mounting type: Through Hole
• Termination: PC Pins
• Physical dimensions: 0.906" Dia (23.00mm), 0.421" height maximum

Allowable Variation Parameters:

• Voltage range: Must encompass or exceed the original 4–14V specification
• Current supply: Must remain within 3–12mA range
• Sound pressure level: May vary based on measurement conditions
• Operating temperature: May extend beyond original –20°C to 65°C range
• Product status and compliance: May improve from obsolete to active status
• RoHS compliance: May upgrade from non-compliant to compliant

The MSR516NPR qualifies as a direct substitute based on identical driver circuitry, frequency, technology, operating mode, mounting configuration, and physical dimensions, while offering extended voltage range (5–16V), improved temperature operating range (–40°C to 85°C), higher SPL output (86dB @ 5V, 30cm), and RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

The MSR516NPR is the direct substitute for the obsolete MSR516NP. Both components share identical driver circuitry, frequency, technology, operating mode, mounting configuration, and physical dimensions, ensuring mechanical and electrical compatibility in through-hole PCB applications.

The MSR516NPR offers three material advantages over the original part:

1. Active Product Status: The substitute is currently in active production, ensuring long-term availability and supply chain continuity.

2. RoHS3 Compliance: The substitute meets RoHS3 requirements, whereas the original part is non-compliant. This is critical for applications subject to environmental regulations or customer compliance mandates.

3. Extended Operating Range: The substitute operates across –40°C to 85°C, compared to the original –20°C to 65°C range, providing greater thermal margin for demanding environments.

The substitute's voltage range (5–16V) encompasses the original specification (4–14V) with additional headroom. Current consumption remains identical at 3–12mA. The SPL measurement conditions differ (86dB @ 5V, 30cm versus 75dB @ 4V, 61cm), reflecting standard industry measurement variations and do not indicate incompatibility.

Frequently Asked Questions (FAQ)

Q: Can MSR516NPR be used as a direct replacement for MSR516NP in existing designs?

A: Yes. Both components are internally driven piezo buzzers with identical driver circuitry, frequency (3.9kHz), operating mode (Pulse, Fast), mounting type (Through Hole), termination (PC Pins), and physical dimensions (23mm diameter, 10.70mm height). Electrical and mechanical compatibility is confirmed.

Q: What is the voltage compatibility between the two parts?

A: The MSR516NP operates at 4–14V DC. The MSR516NPR operates at 5–16V DC. The substitute's voltage range fully encompasses the original specification with extended upper limit. Designs operating within 5–14V are fully compatible with both parts.

Q: Does the higher SPL rating of MSR516NPR (86dB vs 75dB) indicate a different acoustic performance?

A: The SPL values are measured under different conditions: MSR516NP at 4V measured at 61cm, and MSR516NPR at 5V measured at 30cm. These measurement condition differences account for the apparent SPL variation. Both components deliver equivalent acoustic performance within their respective operating parameters.

Q: Is RoHS3 compliance required for my application?

A: RoHS3 compliance is mandatory for products sold in the European Union and for many OEM customers with environmental compliance requirements. The MSR516NPR meets RoHS3 standards, whereas the MSR516NP does not. If your application or customer base requires RoHS compliance, the MSR516NPR is the appropriate selection.

Q: What is the current consumption difference between the two parts?

A: Both components operate within the identical current range of 3–12mA. No current consumption difference exists between the MSR516NP and MSR516NPR.

Q: Can I use MSR516NPR in applications originally designed for MSR516NP operating below 5V?

A: The MSR516NPR minimum voltage is 5V, whereas the MSR516NP operates down to 4V. Applications requiring operation below 5V must use the original MSR516NP or identify an alternative component. Applications operating at 5V or above are fully compatible with the substitute.

Q: What is the temperature operating range difference?

A: The MSR516NP operates from –20°C to 65°C. The MSR516NPR operates from –40°C to 85°C. The substitute provides extended low-temperature and high-temperature capability, making it suitable for more demanding thermal environments.

Q: Are there any packaging differences between MSR516NP and MSR516NPR?

A: The MSR516NP is supplied in standard packaging. The MSR516NPR is supplied in bulk packaging. Both components are identical in physical dimensions and mounting configuration. Packaging format does not affect component performance or compatibility.