XL-451 Equivalent & Substitute Parts

Part Overview

The XL-451 is a piezo buzzer manufactured by PUI Audio, Inc., designed for 12V DC panel mount applications with a 28mm flange form factor and wire lead termination. This component is classified as an internally driven piezo indicator buzzer suitable for audible signaling in electronic equipment.

The XL-451 is currently listed as obsolete. Identifying qualified substitute components is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this part.

Substiute Parts

XL-451

PUI Audio, Inc.In Stock: 783XL-451 Datasheet

Current PartRFQ

XL-2835-TF-FP-LW150-R

PUI Audio, Inc.In Stock: 1373XL-2835-TF-FP-LW150-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the XL-451 is determined by strict equivalence in the following critical parameters:

• Manufacturer: PUI Audio, Inc. (same manufacturer ensures design compatibility)
• Series: XL (maintains product line consistency)
• Technology: Piezo (functional technology requirement)
• Driver Circuitry: Indicator, Internally Driven (operational characteristic)
• Input Type: DC (electrical interface requirement)
• Voltage - Rated: 12 V (primary operating voltage)
• Mounting Type: Panel Mount, Flange (mechanical interface)
• Termination: Wire Leads (connection method)
• Size / Dimension: 1.102" Dia (28.00mm) (form factor constraint)
• Height - Seated (Max): 1.020" (25.90mm) (spatial constraint)

The substitute part XL-2835-TF-FP-LW150-R meets all these critical parameters while offering enhanced specifications in voltage range, frequency, SPL output, and current consumption.

Parameter Comparison

Engineering Selection Recommendations

The XL-2835-TF-FP-LW150-R is the qualified substitute for the obsolete XL-451 based on the following engineering criteria:

Product Status: The XL-451 is obsolete, while the XL-2835-TF-FP-LW150-R is active and currently in production. This ensures long-term availability and supply chain continuity.

Compliance: The XL-2835-TF-FP-LW150-R is ROHS3 compliant, whereas the XL-451 is RoHS non-compliant. This substitution aligns designs with current regulatory requirements for electronic components in regulated markets.

Mechanical Compatibility: Both parts share identical mounting dimensions (28mm diameter, 25.90mm maximum seated height), panel mount flange configuration, and wire lead termination. Direct mechanical interchange is supported without redesign.

Electrical Compatibility: Both parts operate at 12V rated voltage with DC input. The XL-2835-TF-FP-LW150-R provides an extended voltage range (4–18V) that encompasses the original 12V specification, ensuring functional compatibility across the intended operating envelope.

Functional Equivalence: Both components are internally driven piezo indicator buzzers from the same manufacturer and series, maintaining design intent and operational characteristics.

Frequently Asked Questions (FAQ)

Q: Can the XL-2835-TF-FP-LW150-R be used as a direct replacement for the XL-451 without circuit modification?

A: Yes. Both parts share identical rated voltage (12V DC), mounting configuration (panel mount flange), termination method (wire leads), and form factor (28mm diameter, 25.90mm height). No circuit modification is required for electrical or mechanical integration.

Q: What is the primary reason for substitution?

A: The XL-451 is obsolete and no longer in production. The XL-2835-TF-FP-LW150-R is an active product from the same manufacturer and series that meets all critical electrical and mechanical parameters.

Q: Does the XL-2835-TF-FP-LW150-R offer improved specifications?

A: The XL-2835-TF-FP-LW150-R provides documented specifications for frequency (4.6kHz), sound pressure level (92dB @ 12V, 10cm), current consumption (5mA), operating temperature range (-30°C ~ 85°C), and extended voltage range (4–18V). The XL-451 specifications for these parameters were not provided in the original documentation.

Q: Are there compliance differences between these parts?

A: Yes. The XL-451 is RoHS non-compliant, while the XL-2835-TF-FP-LW150-R is ROHS3 compliant. For applications subject to RoHS regulations, the XL-2835-TF-FP-LW150-R is the required choice.

Q: What is the inventory status of these parts?

A: The XL-451 has 685 pieces in stock (obsolete status). The XL-2835-TF-FP-LW150-R has 1,352 pieces in stock and is actively produced.

Q: Are both parts packaged identically?

A: The XL-451 packaging is listed as "-" (not specified). The XL-2835-TF-FP-LW150-R is supplied in bulk packaging. Confirm packaging requirements with the supplier for your specific procurement needs.