CDLC351E2R7T11 Supercapacitor Equivalent and Substitute Parts

Part Overview

The CDLC351E2R7T11 is a 350 F supercapacitor manufactured by Cornell Dubilier Electronics (CDE) with a rated voltage of 2.7 V and radial through-hole mounting. This component is classified as obsolete, necessitating identification of equivalent substitute parts to maintain system functionality and performance in existing designs. The supercapacitor serves as an energy storage element with ultra-high capacitance and low equivalent series resistance, suitable for backup power and peak load applications.

Substiute Parts

CDLC351E2R7T11

Cornell Dubilier Electronics (CDE)In Stock: 855CDLC351E2R7T11 Datasheet

Current PartRFQ

XB3560-2R5407-R

Eaton - Electronics DivisionIn Stock: 895XB3560-2R5407-R Datasheet

SimilarRFQ

XV3560-2R7407-R

Eaton - Electronics DivisionIn Stock: 1258XV3560-2R7407-R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Supercapacitor substitution is determined by the following electrical and mechanical parameters:

Critical Substitution Parameters:

• Capacitance rating: Minimum 350 F to maintain energy storage capacity
• Voltage rating: Minimum 2.7 V to ensure safe circuit operation
• ESR (Equivalent Series Resistance): ≤ 4.5 mOhm to preserve power delivery characteristics
• Lifetime specification: Minimum 1500 Hrs @ specified temperature to ensure reliability
• Through-hole mounting with PC pins for direct compatibility with existing PCB layouts

Package Compatibility: Radial, Can-type packages (4-lead and snap-in configurations) are mechanistically compatible within the lead spacing and dimensional constraints of the original footprint.

Parameter Comparison

Engineering Selection Recommendations

XV3560-2R7407-R (Eaton - Preferred Primary Substitute)

This substitute provides exact electrical parameter matching with the original CDLC351E2R7T11: identical 2.7 V rating, 3.2 mOhm ESR, and 1500 Hrs @ 65°C lifetime. Product status is Active, ensuring long-term availability. ROHS3 compliance and REACH Unaffected status confirm regulatory alignment. Capacitance is increased to 400 F, delivering enhanced energy storage capacity without compromising circuit operation. Mounting remains through-hole with PC pins; the snap-in package variant requires minor mechanical footprint adjustment for existing PCB designs.

XB3560-2R5407-R (Eaton - Secondary Substitute)

This substitute delivers 400 F capacitance with ROHS3 compliance and Active product status. The 2.5 V rating is 0.2 V lower than the original specification, acceptable for systems with 2.5 V tolerance margins. ESR of 4.5 mOhm is slightly elevated from the 3.2 mOhm original specification. Lifetime specification remains 1500 Hrs, qualified at 70°C instead of 65°C. Operating temperature range of -25°C ~ 70°C is narrower than the original -40°C specification, restricting deployment in extreme low-temperature environments.

Frequently Asked Questions (FAQ)

Q: Can XV3560-2R7407-R directly replace CDLC351E2R7T11 on existing PCBs?

A: Electrical parameters are fully compatible. Mechanical adjustment is required: the XV3560-2R7407-R uses snap-in package configuration versus 4-lead radial on the original. Lead spacing differs (0.886" vs 0.795"), requiring PCB layout modification or mechanical adapter hardware.

Q: What is the impact of the 400 F capacitance increase in substitute parts?

A: Higher capacitance increases energy storage capacity per unit volume. Circuit voltage dividers or timing constants dependent on nominal 350 F may exhibit performance changes. System-level testing is required for applications with tight capacitance specifications.

Q: Is XB3560-2R5407-R suitable for 2.7 V circuit designs?

A: The 2.5 V rating is below the original 2.7 V specification. Substitution is limited to circuits with 2.5 V tolerance margins or where over-voltage protection prevents operation above 2.5 V. Direct substitution in 2.7 V-rated designs introduces reliability risk.

Q: Do all substitute parts maintain RoHS and REACH compliance?

A: Yes. Both XV3560-2R7407-R and XB3560-2R5407-R are ROHS3 Compliant. The XV3560-2R7407-R is REACH Unaffected; the XB3560-2R5407-R status is REACH Unaffected. Full regulatory alignment is maintained.

Q: Why does operating temperature range differ across substitutes?

A: Temperature operating range reflects manufacturer testing and reliability specifications. CDLC351E2R7T11 operates -40°C ~ 65°C; XV3560-2R7407-R matches this range; XB3560-2R5407-R is narrower at -25°C ~ 70°C. Component selection must account for system thermal requirements.