Grayhill 78B06 DIP Switch SPST 6-Position Equivalent & Substitute Parts

Part Overview

The Grayhill 78B06 is a slide-actuated DIP switch with SPST (Single Pole Single Throw) circuit configuration, rated for 150mA at 30VDC. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The 78B06 features a 6-position through-hole configuration with gold-plated copper alloy contacts and operates across the industrial temperature range of -40°C to 85°C.

Substiute Parts

78B06

Grayhill Inc.In Stock: 104078B06 Datasheet

Current PartRFQ

78B06T

Grayhill Inc.In Stock: 461978B06T Datasheet

DirectRFQ

206-6

CTS ElectrocomponentsIn Stock: 1275206-6 Datasheet

DirectRFQ

BD06

C&KIn Stock: 11867BD06 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 78B06 is determined by the following critical parameters: circuit type (SPST), number of positions (6), actuator type (slide standard), mounting method (through hole), pitch spacing (0.100"), and termination style (PC pin). These parameters define the physical and electrical interface compatibility.

The substitute parts are grouped into two categories:

Direct Equivalent (Same Electrical Rating): The 78B06T from Grayhill Inc. maintains identical electrical specifications (150mA, 30VDC) and mechanical dimensions. This part differs only in packaging format (tube) and product status (active vs. obsolete), making it a direct replacement.

Functional Equivalents (Reduced Electrical Rating): The 206-6 (CTS Electrocomponents) and BD06 (C&K) maintain the same circuit topology, position count, actuator type, and mounting configuration but operate at reduced current and voltage ratings. These parts are suitable for applications where the electrical load does not exceed their respective ratings.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred): Select the 78B06T from Grayhill Inc. This part maintains identical electrical and mechanical specifications while offering active product status and ROHS3 compliance. The 78B06T is the recommended choice for designs currently using the obsolete 78B06, as it requires no circuit redesign or validation.

For Reduced-Load Applications: The 206-6 (CTS Electrocomponents) is suitable for circuits operating at 50mA or less and 24VDC or lower. The BD06 (C&K) is suitable for circuits operating at 100mA or less and 5VDC. Both alternatives provide extended electrical life ratings (10,000 cycles) compared to the original 78B06 specification. Selection between these options depends on the specific voltage and current requirements of the target application.

Compliance Considerations: All substitute parts listed are ROHS3 compliant and REACH unaffected, addressing regulatory requirements that the obsolete 78B06 does not meet. The 78B06T provides the most direct compliance path for existing designs.

Frequently Asked Questions (FAQ)

Q: Can the 78B06T be used as a direct drop-in replacement for the 78B06?

A: Yes. The 78B06T maintains identical electrical ratings (150mA, 30VDC), mechanical dimensions (0.680" length, 0.315" height), pitch spacing (0.100"), and termination style (PC pin). No circuit modifications are required. The primary difference is packaging format (tube vs. bulk) and active product status.

Q: What are the electrical limitations of the 206-6 and BD06 substitutes?

A: The 206-6 is rated for 50mA at 24VDC maximum. The BD06 is rated for 100mA at 5VDC maximum. These parts cannot be used in applications exceeding their respective current or voltage ratings. Verify that your circuit load does not exceed these specifications before selection.

Q: Are there physical compatibility concerns with the substitute parts?

A: The 206-6 has a slightly increased height above board (0.334" vs. 0.315") and length (0.686" vs. 0.680"). The BD06 has a reduced height (0.297"). Verify clearance in your PCB layout before substitution. All parts maintain the same 0.100" pitch and through-hole mounting configuration.

Q: Which substitute part offers the longest operational life?

A: Both the 206-6 and BD06 specify 10,000 electrical life cycles, compared to 2,000 cycles for the 78B06 and 78B06T. The BD06 also specifies 10,000 mechanical life cycles. For applications requiring extended cycle life, these alternatives provide superior durability specifications.

Q: Are all substitute parts RoHS compliant?

A: Yes. The 78B06T, 206-6, and BD06 are all ROHS3 compliant. The original 78B06 is RoHS non-compliant. If regulatory compliance is required, select from the three active alternatives listed.

Q: What is the temperature operating range for each part?

A: The 78B06, 78B06T, and BD06 operate from -40°C to 85°C. The 206-6 extends the lower temperature limit to -55°C, providing enhanced cold-temperature performance if required by your application environment.