688LBB035M2CD Equivalent & Substitute Parts Reference

Part Overview

The 688LBB035M2CD is a 6800 µF, 35 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the LBB series. This radial, can-style snap-in capacitor is designed for general-purpose applications with a rated lifetime of 3000 hours at 85°C and an operating temperature range of -40°C to 85°C. The part is currently in active production status with ROHS3 compliance and REACH unaffected designation.

Equivalent and substitute parts are identified when design requirements, supply chain constraints, or application-specific performance criteria necessitate alternative component sourcing while maintaining functional compatibility within the specified electrical and mechanical parameters.

Key Parameters

Parameter	Value	Unit
Capacitance	6800	µF
Voltage - Rated	35	V
Tolerance	±20%	-
ESR @ 120Hz	60.9509	mOhm
Lifetime @ Temperature	3000 Hrs @ 85°C	-
Operating Temperature Range	-40°C ~ 85°C	-
Lead Spacing	0.394" (10.00mm)	-
Case Diameter	0.984" (25.00mm)	-
Height - Seated (Max)	1.260" (32.00mm)	-
Package / Case	Radial, Can - Snap-In	-
Mounting Type	Through Hole	-
Polarization	Polar	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution compatibility for the 688LBB035M2CD is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters (Must Match):

Capacitance: 6800 µF
Voltage Rating: 35 V
Tolerance: ±20%
Package / Case: Radial, Can - Snap-In
Mounting Type: Through Hole
Lead Spacing: 0.394" (10.00mm)
Case Diameter: 0.984" (25.00mm)

Compatible Variation Parameters:

ESR @ 120Hz: Substitute parts may vary within acceptable operating ranges
Height - Seated (Max): Substitute parts with heights up to 1.260" (32.00mm) are mechanically compatible
Lifetime @ Temperature: Substitute parts with equivalent or superior lifetime ratings at specified temperatures are acceptable
Operating Temperature Range: Substitute parts with equal or extended temperature ranges are acceptable
Ripple Current Ratings: Substitute parts with equal or superior ripple current capacity are acceptable

All identified substitute parts maintain identical capacitance, voltage rating, tolerance, package style, and lead spacing specifications. Variations in ESR, ripple current performance, and thermal lifetime reflect different manufacturing series and design approaches while preserving functional compatibility.

Parameter Comparison

Parameter	688LBB035M2CD (Main)	SLPX682M035C3P3	35MXG6800MEFCSN25X30	380LX682M035J022	LLS1V682MELA
Manufacturer	Cornell Dubilier / Illinois Capacitor	Cornell Dubilier Electronics (CDE)	Rubycon	Cornell Dubilier Electronics (CDE)	Nichicon
Series	LBB	SLPX	MXG	380LX	LLS
Capacitance	6800 µF	6800 µF	6800 µF	6800 µF	6800 µF
Voltage - Rated	35 V	35 V	35 V	35 V	35 V
Tolerance	±20%	±20%	±20%	±20%	±20%
ESR @ 120Hz	60.9509 mOhm	78 mOhm	Not Specified	69 mOhm	Not Specified
Lifetime @ Temperature	3000 Hrs @ 85°C	3000 Hrs @ 85°C	3000 Hrs @ 105°C	3000 Hrs @ 85°C	3000 Hrs @ 85°C
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 105°C	-40°C ~ 85°C	-40°C ~ 85°C
Ripple Current @ 120 Hz	2.74 A	2.89 A	2.41 A	2.6 A	2.89 A
Ripple Current @ High Frequency	3.425 A @ 10 kHz	3.61 A @ 20 kHz	2.7715 A @ 10 kHz	2.99 A @ 20 kHz	3.3235 A @ 50 kHz
Lead Spacing	0.394" (10.00mm)	0.394" (10.00mm)	0.394" (10.00mm)	0.394" (10.00mm)	0.394" (10.00mm)
Case Diameter	0.984" (25.00mm)	0.984" (25.00mm)	0.984" (25.00mm)	0.984" (25.00mm)	0.984" (25.00mm)
Height - Seated (Max)	1.260" (32.00mm)	1.181" (30.00mm)	1.260" (32.00mm)	1.260" (32.00mm)	1.260" (32.00mm)
Package / Case	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Polarization	Polar	Polar	Polar	Polar	Polar
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All identified substitute parts maintain active production status and full compliance with ROHS3 and REACH regulatory requirements, ensuring long-term availability and environmental compatibility.

SLPX682M035C3P3 (Cornell Dubilier Electronics): Direct manufacturer equivalent with identical electrical specifications. Slightly reduced height (1.181" vs. 1.260") provides enhanced PCB layout flexibility. Higher ESR (78 mOhm) and superior ripple current performance at 20 kHz (3.61 A) support applications requiring enhanced high-frequency ripple current capacity.

35MXG6800MEFCSN25X30 (Rubycon): Upgrade-class substitute with extended operating temperature range (-40°C to 105°C) and thermal lifetime rated at 105°C. Identical physical dimensions and lead spacing. Lower ripple current ratings require evaluation for applications with high ripple current demands. Suitable for elevated ambient temperature environments.

380LX682M035J022 (Cornell Dubilier Electronics): Parametric equivalent with ESR of 69 mOhm and ripple current performance at 20 kHz (2.99 A). Identical physical dimensions and thermal specifications. Represents alternative CDE series option within same manufacturer portfolio.

LLS1V682MELA (Nichicon): Parametric equivalent from alternative manufacturer with superior ripple current performance at 50 kHz (3.3235 A). Identical physical dimensions and thermal specifications. Provides cross-manufacturer sourcing option with equivalent electrical performance.

Frequently Asked Questions (FAQ)

Q: Can SLPX682M035C3P3 be used as a direct replacement for 688LBB035M2CD?

A: Yes. SLPX682M035C3P3 is a direct manufacturer equivalent with identical capacitance (6800 µF), voltage rating (35 V), tolerance (±20%), package style (Radial, Can - Snap-In), lead spacing (10.00mm), and case diameter (25.00mm). The reduced height (1.181" vs. 1.260") is mechanically compatible and provides additional PCB layout clearance.

Q: What is the difference between the main part and 35MXG6800MEFCSN25X30?

A: The 35MXG6800MEFCSN25X30 is classified as an upgrade substitute. It maintains identical capacitance, voltage, tolerance, package, and lead spacing. The primary difference is the extended operating temperature range (-40°C to 105°C vs. -40°C to 85°C) and thermal lifetime rated at 105°C. This part is suitable for applications operating in elevated ambient temperature environments. Ripple current ratings are lower and should be evaluated for specific application requirements.

Q: Are all substitute parts mechanically compatible with the original PCB design?

A: Yes. All substitute parts maintain identical lead spacing (0.394" / 10.00mm) and case diameter (0.984" / 25.00mm). Height variations are within acceptable mechanical compatibility ranges: SLPX682M035C3P3 (1.181"), 35MXG6800MEFCSN25X30 (1.260"), 380LX682M035J022 (1.260"), and LLS1V682MELA (1.260"). Reduced height provides additional clearance; equal or greater height maintains original design envelope.

Q: Which substitute part offers the best ripple current performance?

A: SLPX682M035C3P3 provides the highest ripple current at high frequency (3.61 A @ 20 kHz) and LLS1V682MELA provides the highest ripple current at very high frequency (3.3235 A @ 50 kHz). Selection depends on the specific frequency characteristics of the application's ripple current profile.

Q: Can substitute parts be mixed in the same design or assembly?

A: All substitute parts are electrically and mechanically compatible with the 688LBB035M2CD and with each other, as they maintain identical capacitance, voltage rating, tolerance, package style, and lead spacing. Mixed usage is permissible from a functional compatibility standpoint. Design documentation and bill of materials should reflect the specific part number used in each location.

Q: What is the significance of ESR differences among substitute parts?

A: ESR (Equivalent Series Resistance) affects ripple current handling capability and thermal performance. The main part 688LBB035M2CD has ESR of 60.9509 mOhm @ 120Hz. Substitute parts with higher ESR (SLPX682M035C3P3 at 78 mOhm, 380LX682M035J022 at 69 mOhm) generate slightly more heat under ripple current stress. Applications with high ripple current or thermal constraints should prioritize parts with lower ESR values.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitute parts carry ROHS3 Compliant designation and REACH Unaffected status, ensuring compliance with current environmental and regulatory requirements for electronic component manufacturing and use.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message