EK-27263-A21 Equivalent & Substitute Parts

Part Overview

The EK-27263-A21 is a 100 Hz to 10 kHz analog electret condenser microphone with omnidirectional pickup pattern manufactured by Knowles. This component delivers -53dB ±2dB sensitivity at 74dB SPL and operates at 1.3V with 50µA supply current. The microphone features solder pad termination in a compact rectangular form factor (5.56mm × 3.99mm × 2.26mm maximum height).

The EK-27263-A21 is classified as obsolete. Locating equivalent substitute parts is necessary to support ongoing production requirements, maintenance operations, and system redesigns where this component is specified.

Substiute Parts

EK-27263-A21

KnowlesIn Stock: 1152EK-27263-A21 Datasheet

Current PartRFQ

EK-27263-C05

KnowlesIn Stock: 1104EK-27263-C05 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the EK-27263-A21 is determined by strict equivalence across the following critical parameters:

• Microphone type: Electret Condenser
• Output signal: Analog
• Directional pattern: Omnidirectional
• Frequency response: 100 Hz ~ 10 kHz
• Sensitivity specification: -53dB ±2dB @ 74dB SPL
• Electrical ratings: 1.3V rated voltage, 50µA supply current
• Impedance: 4.4 kOhms
• Physical form factor: Rectangular, 5.56mm × 3.99mm × 2.26mm maximum height
• Termination method: Solder Pads
• Port location: Side

The EK-27263-C05 meets all specified parameters and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The EK-27263-C05 is the qualified substitute for the obsolete EK-27263-A21. Both components are manufactured by Knowles and share identical electrical, mechanical, and functional specifications across all critical parameters.

The EK-27263-C05 carries Active product status, ensuring continued availability and manufacturer support. The substitute part holds ROHS3 compliance and REACH Unaffected status, meeting current regulatory requirements for electronic component procurement.

Packaging differs between the two parts: the EK-27263-A21 is supplied with unspecified packaging, while the EK-27263-C05 is supplied in Bulk packaging. This distinction does not affect electrical or mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can the EK-27263-C05 replace the EK-27263-A21 in existing designs?

A: Yes. The EK-27263-C05 is electrically and mechanically equivalent to the EK-27263-A21. All critical parameters—frequency response, sensitivity, impedance, voltage rating, current consumption, physical dimensions, and termination method—are identical. Direct substitution is supported without circuit modification.

Q: What is the difference between these two part numbers?

A: The primary difference is product status. The EK-27263-A21 is obsolete, while the EK-27263-C05 is active. The EK-27263-C05 also includes ROHS3 compliance and REACH Unaffected certifications. Packaging format differs, but electrical and mechanical specifications are identical.

Q: Are there any compatibility concerns with the packaging change?

A: No. The packaging format change from unspecified to Bulk does not affect component performance or circuit compatibility. Both parts use identical solder pad termination and physical form factors.

Q: Does the EK-27263-C05 meet current regulatory standards?

A: Yes. The EK-27263-C05 is ROHS3 compliant and REACH Unaffected, meeting current regulatory requirements for electronic component procurement and use.

Q: What is the impedance of these microphones?

A: Both the EK-27263-A21 and EK-27263-C05 have an impedance of 4.4 kOhms.

Q: What is the operating voltage for these components?

A: Both components operate at a rated voltage of 1.3V with a supply current of 50µA.