KS-01Q-03 Equivalent & Substitute Parts

Part Overview

The KS-01Q-03 is a pushbutton switch manufactured by E-Switch, featuring SPST-NO (Single Pole Single Throw - Normally Open) circuit configuration with a 10mA DC current rating and 35V DC voltage rating. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for new designs and ongoing production requirements. The switch utilizes through-hole mounting with PC pin termination and a green round button actuator.

Substiute Parts

KS-01Q-03

E-SwitchIn Stock: 887KS-01Q-03 Datasheet

Current PartRFQ

330.02E11.08BLK

E-SwitchIn Stock: 793330.02E11.08BLK Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KS-01Q-03 is determined by the following critical parameters:

• Circuit configuration must remain SPST-NO
• Current rating must equal or exceed 10mA DC
• Voltage rating must equal or exceed 35V DC
• Mounting type must be through hole
• Termination style must be PC pin
• Switch function must be Off-Mom (momentary)
• RoHS3 compliance must be maintained

The substitute part 330.02E11.08BLK meets all substitution criteria with enhanced electrical and mechanical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The 330.02E11.08BLK is a direct functional substitute for the obsolete KS-01Q-03. Both components are manufactured by E-Switch and maintain ROHS3 compliance. The substitute part is in active production status, ensuring long-term availability and supply chain continuity.

The 330.02E11.08BLK provides superior electrical and mechanical performance with doubled cycle life ratings (1,000,000 cycles versus 500,000 mechanical and 250,000 electrical cycles). Current and voltage ratings are increased to 25mA and 50V respectively, exceeding the original 10mA and 35V specifications.

The operating temperature range of the substitute is -20°C to 70°C, which is 15°C narrower at the upper limit compared to the original -20°C to 85°C range. This parameter must be evaluated against specific application thermal requirements.

Frequently Asked Questions (FAQ)

Q: Can the 330.02E11.08BLK directly replace the KS-01Q-03 in existing designs?

A: Yes. Both components share identical circuit configuration (SPST-NO), mounting type (through hole), termination style (PC pin), and switch function (Off-Mom). The substitute meets or exceeds all critical electrical parameters.

Q: What is the significance of the higher current and voltage ratings on the substitute part?

A: The 330.02E11.08BLK is rated for 25mA at 50V compared to the KS-01Q-03's 10mA at 35V. These higher ratings provide design margin and allow the substitute to function in applications with greater electrical demands while remaining compatible with lower-demand applications.

Q: Does the narrower operating temperature range of the substitute affect compatibility?

A: The 330.02E11.08BLK operates from -20°C to 70°C, compared to the original -20°C to 85°C. Applications requiring operation above 70°C must evaluate this limitation against specific thermal requirements.

Q: Are both parts RoHS compliant?

A: Yes. Both the KS-01Q-03 and 330.02E11.08BLK are ROHS3 compliant, maintaining regulatory compliance for restricted substance requirements.

Q: What is the advantage of the substitute's increased mechanical and electrical life ratings?

A: The 330.02E11.08BLK provides 1,000,000 cycles for both mechanical and electrical life, compared to 500,000 mechanical and 250,000 electrical cycles for the KS-01Q-03. This extended cycle life improves component reliability and extends service intervals in high-cycle applications.

Q: Why is the KS-01Q-03 classified as obsolete?

A: Obsolete status indicates the component is no longer in active production. The 330.02E11.08BLK represents the current E-Switch offering for this functional category, ensuring ongoing availability and support.