EYP-2BN109 Equivalent & Substitute Parts

Part Overview

The EYP-2BN109 is a Thermal Cutoff (TCO) device manufactured by Panasonic Electronic Components, rated for 250VAC/50VDC at 2A with an operating temperature of 114°C (237°F). This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and component sourcing. The axial package configuration and BEAB, CCC, CSA, PSE, UL, and VDE certifications define its application scope in thermal protection circuits.

Substiute Parts

EYP-2BN109

Panasonic Electronic ComponentsIn Stock: 1135EYP-2BN109 Datasheet

Current PartRFQ

SDF DF110S

CanthermIn Stock: 836SDF DF110S Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EYP-2BN109 is determined by the following critical parameters:

• Voltage Rating (AC/DC): Must meet or exceed 250VAC and 50VDC
• Current Rating: Must support the circuit requirement; the EYP-2BN109 is rated at 2A
• Rated Functioning Temperature: Must align with thermal protection setpoint at 114°C (237°F)
• Package Configuration: Axial package required for mechanical compatibility
• Approval Certifications: Must maintain compliance with UL, VDE, and other applicable standards

The SDF DF110S from Cantherm is identified as a substitute based on matching voltage ratings (250VAC), axial package configuration, and overlapping approval certifications (UL, VDE, CCC, PSE). However, critical differences exist in current rating and functioning temperature that must be evaluated against specific circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

The SDF DF110S serves as an active substitute for the obsolete EYP-2BN109 where circuit design permits. Both components share 250VAC voltage rating, axial package configuration, and overlapping regulatory certifications (UL, VDE, CCC, PSE). The SDF DF110S maintains active product status with ROHS3 compliance, supporting long-term supply chain continuity.

Selection of the SDF DF110S requires verification that the circuit design accommodates the following parameter differences:

• Current Rating: SDF DF110S is rated at 10A versus 2A for EYP-2BN109
• Rated Functioning Temperature: SDF DF110S operates at 110°C (230°F) versus 114°C (237°F)
• Holding Temperature: SDF DF110S holds at 86°C (187°F) versus 90°C (194°F)
• DC Voltage Rating: SDF DF110S DC rating is not specified

The higher current rating of the SDF DF110S does not preclude substitution in lower-current applications. The 4°C difference in functioning temperature and 4°C difference in holding temperature represent minor thermal setpoint variations within typical thermal protection circuit tolerances.

Frequently Asked Questions (FAQ)

Q: Can the SDF DF110S replace the EYP-2BN109 in all applications?

A: The SDF DF110S is mechanically and electrically compatible at 250VAC. However, the functioning temperature difference (110°C vs. 114°C) and holding temperature difference (86°C vs. 90°C) must be evaluated against specific thermal protection requirements. The higher current rating (10A vs. 2A) does not prevent substitution in lower-current circuits.

Q: What is the significance of the current rating difference?

A: The EYP-2BN109 is rated at 2A, while the SDF DF110S is rated at 10A. A component with higher current rating can safely operate in circuits with lower current demands. The substitution is valid from a current-handling perspective.

Q: Are the approval certifications equivalent?

A: Both components carry UL, VDE, CCC, and PSE certifications. The EYP-2BN109 includes additional BEAB and CSA certifications. The SDF DF110S carries cUL certification. Regulatory compliance must be confirmed against specific application requirements.

Q: What does the 4°C temperature difference mean for thermal protection?

A: The SDF DF110S functions at 110°C (230°F) compared to the EYP-2BN109 at 114°C (237°F). This 4°C difference represents a slightly lower thermal setpoint. Applications requiring precise thermal cutoff at 114°C may require circuit-level thermal compensation or alternative component selection.

Q: Is the axial package identical between both components?

A: Both components use axial package configuration, supporting direct mechanical substitution in PCB layouts and thermal protection circuits designed for axial-lead components.