HC-23765-000 Equivalent & Substitute Parts

Part Overview

The HC-23765-000 is a 53 Ohms Receiver with Balanced Armature technology manufactured by Knowles. This component operates across a frequency range of 100 Hz to 5.5 kHz with a Sound Pressure Level (SPL) efficiency rating of 101 dBA. The part features a top-mounted rectangular port configuration with solder pad termination and compact dimensions of 0.203" L x 0.138" W (5.16mm x 4.61mm).

The HC-23765-000 is classified as Obsolete. Locating equivalent or substitute components is necessary to support ongoing system maintenance, design updates, or production continuity when original inventory becomes unavailable.

Substiute Parts

HC-23765-000

KnowlesIn Stock: 780HC-23765-000 Datasheet

Current PartRFQ

RAB-32033-000

KnowlesIn Stock: 883RAB-32033-000 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HC-23765-000 is determined by the following critical parameters:

• Technology Type: Balanced Armature Receiver (magnetic technology)
• Port Configuration: Top-mounted rectangular port
• Termination Method: Solder pads
• Impedance Range: 50–53 Ohms (near-equivalent impedance tolerance)
• Frequency Response Capability: Minimum coverage of the 100 Hz to 5.5 kHz operating band
• Efficiency Class: SPL rating within acceptable operational range
• Compliance Standards: ROHS3 compliance and MSL rating compatibility
• Physical Form Factor: Rectangular shape with compatible seated height

The RAB-32033-000 meets these substitution criteria through equivalent technology classification, matching port location and termination method, near-equivalent impedance (50 Ohms vs. 53 Ohms), and superior frequency range coverage with enhanced SPL efficiency.

Parameter Comparison

Engineering Selection Recommendations

The RAB-32033-000 is the designated manufacturer-recommended substitute for the HC-23765-000. Both components are manufactured by Knowles and share identical compliance certifications (ROHS3 Compliant, MSL 1). The RAB-32033-000 maintains Active product status, ensuring continued availability and supply chain support.

The RAB-32033-000 provides extended frequency range coverage (20 Hz to 11.8 kHz versus 100 Hz to 5.5 kHz) and increased SPL efficiency (106 dBA versus 101 dBA). Impedance variance is minimal (50 Ohms versus 53 Ohms), representing a 5.7% difference within typical circuit tolerance margins for balanced armature receiver applications. Mechanical compatibility is confirmed through identical seated height (0.203" / 5.15mm) and matching port location and termination configuration.

Frequently Asked Questions (FAQ)

Q: What is the impedance tolerance between HC-23765-000 and RAB-32033-000?

A: The impedance difference is 3 Ohms (53 Ohms to 50 Ohms), representing a 5.7% variance. This falls within acceptable tolerance for balanced armature receiver circuits designed for near-equivalent impedance operation.

Q: Does the RAB-32033-000 cover the full frequency range of the HC-23765-000?

A: Yes. The HC-23765-000 operates from 100 Hz to 5.5 kHz. The RAB-32033-000 operates from 20 Hz to 11.8 kHz, providing complete coverage of the original frequency band plus extended low and high-frequency response.

Q: Are the physical dimensions compatible?

A: The seated height is identical at 0.203" (5.15mm). Length and width dimensions differ slightly (HC-23765-000: 0.203" L x 0.138" W; RAB-32033-000: 0.203" L x 1.117" W). Verify mechanical fit within your specific application enclosure before substitution.

Q: What is the packaging difference?

A: The HC-23765-000 packaging specification is not provided in the available data. The RAB-32033-000 is supplied in Tray packaging. Confirm packaging compatibility with your procurement and assembly requirements.

Q: Are both parts RoHS compliant?

A: Yes. Both HC-23765-000 and RAB-32033-000 are ROHS3 Compliant with MSL rating of 1 (Unlimited), meeting identical environmental and regulatory standards.

Q: Why is the HC-23765-000 marked as Obsolete?

A: Obsolete status indicates the part is no longer in active production. The RAB-32033-000, classified as Active, represents the current equivalent offering from Knowles for this balanced armature receiver application.