WST-0905S Equivalent & Substitute Parts

Part Overview

The WST-0905S is an internally driven magnetic buzzer manufactured by Soberton Inc., rated for 5V operation with a 9.6mm through-hole form factor. This component is designed for audio indication applications requiring a single-tone output at 2.73kHz with 83dB sound pressure level. The part maintains Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the specified parameter ranges.

Substiute Parts

WST-0905S

Soberton Inc.In Stock: 910WST-0905S Datasheet

Current PartRFQ

CX-0905C

CUI DevicesIn Stock: 84011CX-0905C Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The CX-0905C from CUI Devices qualifies as a substitute based on the following alignment of critical parameters:

• Rated voltage matches at 5V with compatible voltage range (4 ~ 7V encompasses the WST-0905S range of 4 ~ 6V)
• Current supply identical at 35mA
• Frequency within acceptable tolerance (2.7kHz vs. 2.73kHz)
• Sound pressure level within 3dB variance (80dB vs. 83dB @ 5V, 10cm)
• Identical physical dimensions (0.378" Dia / 9.60mm)
• Matching mounting type (Through Hole) and termination (PC Pins)
• Identical technology classification (Magnetic, Internally Driven)
• Both components maintain RoHS3 compliance and REACH Unaffected status

Parameter Comparison

Engineering Selection Recommendations

Both the WST-0905S and CX-0905C maintain Active product status with full RoHS3 compliance and REACH Unaffected designation. The CX-0905C provides an extended operating temperature range (-30°C ~ 70°C versus -20°C ~ 60°C) and broader voltage tolerance (4 ~ 7V versus 4 ~ 6V). The height variance of 0.02" (0.20mm) between seated positions is negligible for through-hole applications. The 3dB SPL difference reflects normal manufacturing variation within the magnetic buzzer category. Selection between these parts should be based on specific application requirements regarding temperature extremes and acoustic output specifications.

Frequently Asked Questions (FAQ)

Q: Can the CX-0905C directly replace the WST-0905S in existing designs?

A: Yes. Both components share identical rated voltage (5V), current draw (35mA), physical diameter (9.60mm), mounting type (Through Hole), and termination style (PC Pins). The frequency and SPL parameters are within acceptable engineering tolerances for audio indication applications.

Q: What is the significance of the voltage range difference?

A: The CX-0905C operates across 4 ~ 7V while the WST-0905S operates across 4 ~ 6V. The CX-0905C provides additional margin at higher supply voltages. For applications constrained to the 4 ~ 6V window, both parts perform equivalently.

Q: How does the 3dB SPL difference affect application performance?

A: The WST-0905S produces 83dB while the CX-0905C produces 80dB at 5V, 10cm. This 3dB variance represents a perceptible but minor difference in acoustic output. Applications with strict SPL requirements should specify the WST-0905S; applications with flexible acoustic specifications can accommodate either part.

Q: Are there temperature considerations for part selection?

A: The CX-0905C supports -30°C ~ 70°C operation versus the WST-0905S at -20°C ~ 60°C. For applications operating below -20°C or above 60°C, the CX-0905C provides extended thermal capability.

Q: Do both parts require identical PCB footprints?

A: Yes. Both components use Through Hole mounting with PC Pins termination and identical 9.60mm diameter specifications. The height difference of 0.20mm (0.02") does not affect PCB layout compatibility.

Q: What compliance certifications apply to both parts?

A: Both the WST-0905S and CX-0905C are RoHS3 compliant and REACH Unaffected, meeting current environmental and regulatory requirements for electronic components.