BD02AV2 Equivalent & Substitute Parts

Part Overview

The BD02AV2 is a DIP slide switch manufactured by C&K, featuring SPST (Single Pole Single Throw) configuration with 2 positions, rated for 100mA at 5VDC. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement planning. The switch employs a through-hole, right-angle mounting with PC pin termination and phosphor bronze gold-plated contacts suitable for applications requiring reliable low-voltage switching.

Substiute Parts

BD02AV2

C&KIn Stock: 823BD02AV2 Datasheet

Current PartRFQ

BD02AV

C&KIn Stock: 6774BD02AV Datasheet

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KAS2102E

E-SwitchIn Stock: 4590KAS2102E Datasheet

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KAS2102ET

E-SwitchIn Stock: 28087KAS2102ET Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BD02AV2 is determined by strict alignment across the following critical parameters: circuit configuration (SPST), number of positions (2), mounting type (through hole, right angle), termination style (PC pin), pitch (0.100"), contact material and finish (phosphor bronze with gold plating), operating temperature range (-40°C to 85°C), body material (PBT glass-filled), and environmental compliance (RoHS, REACH, MSL 1).

The substitute parts are grouped into two categories:

Category 1: Direct Functional Equivalent BD02AV (C&K) — Identical electrical and mechanical specifications to BD02AV2, differing only in product status (active vs. obsolete) and packaging format (tube vs. unspecified).

Category 2: Conditional Substitutes KAS2102E and KAS2102ET (E-Switch) — Share identical circuit configuration, mounting, termination, pitch, contact materials, operating temperature, body material, and compliance certifications. However, these parts operate at 24VDC with 25mA current rating and reduced mechanical/electrical life (2,000 cycles vs. 10,000 cycles). Substitution is valid only in applications where the lower voltage/current ratings and reduced cycle life are acceptable.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: BD02AV (C&K)

The BD02AV is the optimal substitute for the obsolete BD02AV2. Both parts share identical electrical ratings (100mA, 5VDC), mechanical specifications, contact materials, and environmental compliance. The BD02AV maintains active product status with ROHS3 certification, ensuring long-term availability and regulatory compliance. The only distinction is packaging format (tube), which does not affect functional performance. This part is suitable for direct replacement in all applications originally designed for BD02AV2.

Secondary Recommendation: KAS2102ET (E-Switch)

The KAS2102ET is a viable substitute only in applications where the circuit operates at 24VDC with current requirements not exceeding 25mA. This part offers the advantage of tape seal washability and active product status. However, the reduced mechanical and electrical life (2,000 cycles vs. 10,000 cycles) restricts its use to lower-cycle-count applications. PCB layout modifications may be required due to minor dimensional differences (height 0.390" vs. 0.380", length 0.254" vs. 0.280").

Conditional Recommendation: KAS2102E (E-Switch)

The KAS2102E shares identical specifications with KAS2102ET but lacks washability. Selection of this part is appropriate only when washability is not a design requirement and the 24VDC/25mA operating parameters are compatible with the application.

Frequently Asked Questions (FAQ)

Q: Can BD02AV directly replace BD02AV2 without circuit modifications?

A: Yes. The BD02AV is electrically and mechanically identical to BD02AV2, differing only in product status and packaging. No circuit or PCB layout changes are required.

Q: What are the key differences between BD02AV and the KAS2102 series?

A: The primary differences are voltage rating (5VDC vs. 24VDC), current rating (100mA vs. 25mA), and cycle life (10,000 vs. 2,000 cycles). The KAS2102 series is suitable only for applications operating within these lower electrical parameters.

Q: Are there dimensional compatibility concerns when substituting KAS2102ET for BD02AV2?

A: Yes. The KAS2102ET has a slightly greater height (0.390" vs. 0.380") and shorter length (0.254" vs. 0.280"). PCB layout verification is required to confirm clearance and mounting compatibility.

Q: Does washability affect the choice between KAS2102E and KAS2102ET?

A: Washability is determined by the presence of a tape seal feature. KAS2102ET includes tape seal washability; KAS2102E does not. Selection depends on whether the assembly process includes aqueous cleaning steps.

Q: Are all substitute parts RoHS and REACH compliant?

A: Yes. BD02AV carries ROHS3 certification, and both KAS2102E and KAS2102ET carry ROHS3 certification. All parts are REACH Unaffected. MSL ratings are uniform at Level 1 (Unlimited) across all options.

Q: What is the impact of reduced cycle life in the KAS2102 series?

A: The KAS2102 series is rated for 2,000 mechanical and electrical cycles compared to 10,000 cycles for BD02AV2/BD02AV. Applications requiring frequent switch actuation should retain the BD02AV as the primary choice.