EB2065-BH Equivalent & Substitute Parts

Part Overview

The EB2065-BH is an SPDT pushbutton switch manufactured by NKK Switches, rated for 3A at 125V AC. This panel-mount, rear-termination switch is designed for standard on-on switching applications with solder lug connections and epoxy sealed terminals. The part is currently active in production with 716 units in stock. Substitute parts are identified when equivalent electrical ratings, circuit configuration, and mechanical compatibility are maintained across the allowed parameter set.

Substiute Parts

EB2065-BH

NKK SwitchesIn Stock: 819EB2065-BH Datasheet

Current PartRFQ

1977739-1

TE Connectivity ALCOSWITCH SwitchesIn Stock: 9851977739-1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The EB2065-BH accepts substitute part 1977739-1 based on the following equivalence criteria:

• Circuit Configuration: Both parts are SPDT switches with identical on-on switching function
• Electrical Ratings: Both rated for 3A AC at 125V AC
• Mounting Configuration: Both are panel-mount, rear-termination designs
• Termination: Both use solder lug connections
• Electrical Life: Both rated for 25,000 cycles minimum
• Compliance: Both are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity)
• HTSUS Classification: Identical tariff code (8536.50.9033)

Substitution is valid when the application requires these core electrical and mechanical parameters. Differences in actuator type, operating temperature range, and mechanical life do not preclude substitution when these parameters are not critical to the application.

Parameter Comparison

Engineering Selection Recommendations

Both the EB2065-BH and 1977739-1 are active production parts with ROHS3 compliance and identical electrical specifications. Selection between these parts should be based on:

• Inventory Availability: 1977739-1 has 964 units in stock versus 716 units for EB2065-BH
• Operating Temperature Requirements: If the application operates below -10°C or above 70°C, the 1977739-1 extended range (-20°C ~ 80°C) is required
• Mechanical Life Specification: EB2065-BH specifies 100,000 mechanical cycles; 1977739-1 does not provide this specification
• Supply Chain Continuity: Both manufacturers maintain active product status, supporting long-term availability

Frequently Asked Questions (FAQ)

Q: Can 1977739-1 directly replace EB2065-BH in existing designs?

A: Yes, when the application operates within the specified electrical parameters (3A, 125V AC, SPDT on-on function) and does not require the mechanical life specification of 100,000 cycles. Panel cutout dimensions must be verified for mechanical fit, as this parameter differs between parts.

Q: What is the difference in actuator design between these parts?

A: EB2065-BH uses a round button actuator with no marking. 1977739-1 uses a plunger-type actuator designed for cap mounting. Both actuators are compatible with panel-mount, rear-termination installations when properly seated.

Q: Are there compliance or certification differences?

A: Both parts are ROHS3 compliant with EAR99 ECCN classification and identical HTSUS tariff codes. REACH status differs (EB2065-BH is REACH Unaffected; 1977739-1 is Vendor Undefined), which may affect supply chain documentation requirements.

Q: Which part should be selected for temperature-critical applications?

A: For applications requiring operation below -10°C or above 70°C, 1977739-1 is the appropriate selection due to its -20°C ~ 80°C operating range.

Q: Are solder lug terminations identical between both parts?

A: Both parts use solder lug termination style. Physical dimensions and lug spacing should be confirmed against PCB design specifications before assembly.