BP02KT DIP Switch SPST Equivalent & Substitute Parts

Part Overview

The BP02KT is a slide-actuated DIP switch manufactured by C&K, designed for SPST (Single Pole Single Throw) switching applications at 100mA and 5VDC. This component features through-hole, right-angle mounting with PC pin termination and is rated for 2,000 mechanical and electrical cycles. The BP02KT is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

BP02KT

C&KIn Stock: 779BP02KT Datasheet

Current PartRFQ

BPA02B

C&KIn Stock: 4307BPA02B Datasheet

DirectRFQ

194-2MST

CTS ElectrocomponentsIn Stock: 2585194-2MST Datasheet

DirectRFQ

KAP1102ET

E-SwitchIn Stock: 1067KAP1102ET Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BP02KT is determined by the following critical parameters:

Core Electrical Requirements:

• Circuit configuration must be SPST
• Number of positions must be 2
• Current rating must support minimum 100mA
• Voltage rating must support minimum 5VDC
• Contact finish must be gold-plated

Mechanical Requirements:

• Mounting type must be through-hole, right-angle
• Termination style must be PC pin
• Pitch must be 0.100" (2.54mm)
• Actuator level must be raised

Environmental & Compliance:

• Operating temperature range must encompass -20°C minimum
• RoHS compliance required
• MSL rating of 1 (Unlimited) required

The substitute parts are grouped as follows:

Direct Substitutes (Functionally Equivalent): Parts meeting all core electrical, mechanical, and environmental requirements with active product status.

Similar Substitutes (Functional Compatibility with Parameter Variance): Parts meeting core circuit and mounting requirements but with electrical parameter differences (voltage or current ratings) that may require application verification.

Parameter Comparison

Engineering Selection Recommendations

BPA02B (C&K): This part is the primary direct substitute for the BP02KT. Both components share identical electrical specifications (100mA, 5VDC, SPST, 2-position), matching pitch, PC pin termination, and gold contact finish. The BPA02B is active product status with ROHS3 compliance and extended operating temperature range (-20°C ~ 85°C). The actuator type differs (piano versus slide), and mechanical life is reduced to 1,000 cycles; however, electrical characteristics and mounting compatibility are fully preserved. This substitute is suitable for direct replacement in applications where actuator style is not a design constraint.

194-2MST (CTS Electrocomponents): This part is a similar substitute with electrical parameter variance. While circuit configuration, mounting type, pitch, and termination match the BP02KT, the voltage rating is 24VDC and current rating is 50mA. This part is suitable only for applications operating at 24VDC with current requirements not exceeding 50mA. The extended operating temperature range (-40°C ~ 85°C) and higher electrical life (7,000 cycles) provide enhanced environmental performance. ROHS3 compliance is confirmed.

KAP1102ET (E-Switch): This part is a similar substitute with significant electrical parameter variance. Current rating is 25mA and voltage rating is 24VDC, making it suitable only for low-current 24VDC applications. Mechanical life matches the BP02KT at 2,000 cycles, and electrical life is also 2,000 cycles. Operating temperature range is -40°C ~ 85°C. The mounting type is listed as through-hole without right-angle specification, and washability is not supported. ROHS3 compliance is confirmed. This substitute requires application-level verification of current and voltage compatibility.

Frequently Asked Questions (FAQ)

Q: Can BPA02B replace BP02KT in all applications?

A: BPA02B is electrically and mechanically compatible with BP02KT for applications where the actuator type (piano versus slide) does not affect functionality. Both parts operate at 100mA and 5VDC with matching pitch and PC pin termination. The reduced mechanical life (1,000 versus 2,000 cycles) should be evaluated against application duty cycle requirements.

Q: What are the key differences between BP02KT and 194-2MST?

A: The primary differences are voltage rating (5VDC versus 24VDC) and current rating (100mA versus 50mA). The 194-2MST is suitable only for 24VDC applications with current requirements not exceeding 50mA. Both parts share SPST configuration, 2-position design, through-hole right-angle mounting, and 0.100" pitch.

Q: Is KAP1102ET suitable for 5VDC applications?

A: No. KAP1102ET is rated for 24VDC operation. While it supports SPST configuration and 2-position design, the voltage and current ratings (24VDC, 25mA) differ significantly from BP02KT specifications. Application of this part outside its rated voltage range is not supported.

Q: What is the impact of actuator type differences?

A: BP02KT uses a slide actuator, while BPA02B, 194-2MST, and KAP1102ET use piano actuators. Actuator type affects user interface and mechanical engagement but does not impact electrical switching performance. Selection depends on PCB layout constraints and user interaction requirements.

Q: Are all substitute parts RoHS compliant?

A: Yes. BP02KT is RoHS Compliant, and all substitute parts (BPA02B, 194-2MST, KAP1102ET) are ROHS3 Compliant. All parts have MSL rating of 1 (Unlimited) and are suitable for applications with RoHS requirements.

Q: What is the packaging format for these parts?

A: BP02KT packaging is not specified in available data. BPA02B, 194-2MST, and KAP1102ET are supplied in tube packaging. Confirm packaging requirements with your procurement specification.