688LBA080M2EG Equivalent & Substitute Parts Reference

Part Overview

The 688LBA080M2EG is a 6800 µF, 80 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the LBA series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring high capacitance at moderate voltage ratings. The part is Active status and ROHS3 compliant. Equivalent and substitute parts are identified when designs require alternative sourcing, extended thermal performance, improved reliability metrics, or inventory optimization while maintaining electrical and mechanical compatibility.

Substiute Parts

688LBA080M2EG

Cornell Dubilier / Illinois CapacitorIn Stock: 942688LBA080M2EG Datasheet

Current PartRFQ

80USG6800MEFCSN35X40

RubyconIn Stock: 86580USG6800MEFCSN35X40 Datasheet

DirectRFQ

LLS1K682MELC

NichiconIn Stock: 273801LLS1K682MELC Datasheet

DirectRFQ

SLPX682M080H7P3

Cornell Dubilier Electronics (CDE)In Stock: 4674SLPX682M080H7P3 Datasheet

DirectRFQ

LGU1K682MELC

NichiconIn Stock: 273877LGU1K682MELC Datasheet

UpgradeRFQ

LGY1K682MELC45

NichiconIn Stock: 274192LGY1K682MELC45 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 688LBA080M2EG is determined by strict adherence to the following parameters:

Critical Parameters (Must Match Exactly):

• Capacitance: 6800 µF
• Tolerance: ±20%
• Voltage - Rated: 80 V
• Package / Case: Radial, Can - Snap-In
• Lead Spacing: 0.394" (10.00 mm)
• Size / Dimension: 1.378" Dia (35.00 mm)
• Mounting Type: Through Hole
• Polarization: Polar

Allowed Variation Parameters:

• Height - Seated (Max): Variation permitted within mechanical envelope constraints
• Lifetime @ Temp.: Extended ratings acceptable
• Operating Temperature: Extended upper temperature limit acceptable
• ESR (Equivalent Series Resistance): Variation permitted
• Ripple Current: Variation permitted

Compliance Requirements:

• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected
• ECCN: EAR99
• HTSUS: 8532.22.0040

Substitute parts are categorized as Direct Equivalents (same thermal performance) or Upgrades (enhanced thermal performance at higher operating temperatures).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent Substitutes (Same Thermal Performance Class):

The following parts are direct equivalents to the 688LBA080M2EG and maintain compatibility with designs specified for 2000-3000 hour lifetime at 85°C operation:

• 80USG6800MEFCSN35X40 (Rubycon USG series): Provides 3000 hour lifetime at 85°C with reduced height (42.00 mm vs. 47.00 mm). Suitable for space-constrained PCB layouts. ROHS3 compliant, REACH unaffected.

• LLS1K682MELC (Nichicon LLS series): Provides 3000 hour lifetime at 85°C with reduced height (42.00 mm vs. 47.00 mm). Extensive inventory availability (273,782 pcs). ROHS3 compliant, REACH unaffected.

• SLPX682M080H7P3 (Cornell Dubilier Electronics SLPX series): Provides 3000 hour lifetime at 85°C with improved ESR (49 mOhm vs. 60.9509 mOhm) and reduced height (40.00 mm vs. 47.00 mm). ROHS3 compliant, REACH unaffected.

Upgrade Substitutes (Enhanced Thermal Performance):

The following parts provide extended operating temperature range and extended lifetime at elevated temperatures, suitable for designs requiring higher thermal margin:

• LGU1K682MELC (Nichicon LGU series): Extends operating temperature to -40°C ~ 105°C with 3000 hour lifetime at 105°C. Maintains original height (47.00 mm). ROHS3 compliant, REACH unaffected.

• LGY1K682MELC45 (Nichicon LGY series): Extends operating temperature to -40°C ~ 105°C with 5000 hour lifetime at 105°C. Maintains original height (47.00 mm). Provides maximum thermal performance and reliability margin. ROHS3 compliant, REACH unaffected.

All substitute parts maintain identical electrical specifications (6800 µF, ±20%, 80 V), mechanical footprint (35.00 mm diameter, 10.00 mm lead spacing), and compliance certifications (ROHS3, REACH unaffected, EAR99, HTSUS 8532.22.0040).

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with reduced height in my PCB design?

A: Height reduction is permitted only if your PCB layout accommodates the smaller dimension. Direct equivalents 80USG6800MEFCSN35X40, LLS1K682MELC, and SLPX682M080H7P3 feature heights of 40.00-42.00 mm compared to the original 47.00 mm. Verify clearance with mechanical drawings before substitution. Upgrade parts LGU1K682MELC and LGY1K682MELC45 maintain the original 47.00 mm height.

Q: What is the difference between direct equivalents and upgrade substitutes?

A: Direct equivalents (80USG6800MEFCSN35X40, LLS1K682MELC, SLPX682M080H7P3) maintain the same thermal performance class (2000-3000 hours at 85°C) and operating temperature range (-40°C ~ 85°C). Upgrade substitutes (LGU1K682MELC, LGY1K682MELC45) extend the operating temperature range to -40°C ~ 105°C and provide extended lifetime at elevated temperatures (3000-5000 hours at 105°C), offering improved reliability margin for high-temperature applications.

Q: Are all substitute parts mechanically compatible with the original 688LBA080M2EG footprint?

A: All substitute parts share identical lead spacing (0.394" / 10.00 mm), diameter (1.378" / 35.00 mm), and mounting type (through-hole radial snap-in). Height variation exists: direct equivalents range from 40.00-42.00 mm, while upgrade parts maintain 47.00 mm. Verify PCB clearance for reduced-height variants.

Q: Do substitute parts meet the same compliance requirements?

A: All substitute parts are ROHS3 compliant, REACH unaffected, classified as EAR99, and carry HTSUS code 8532.22.0040, matching the original part's regulatory status.

Q: What is the significance of ESR (Equivalent Series Resistance) variation?

A: ESR affects ripple current handling and heat generation. The original 688LBA080M2EG specifies 60.9509 mOhm @ 120Hz. SLPX682M080H7P3 provides lower ESR (49 mOhm), improving efficiency in high-ripple-current applications. Other substitutes do not specify ESR; verify ripple current ratings for your application requirements.

Q: Can I substitute the 688LBA080M2EG in a design operating continuously at 105°C?

A: No. The original part is rated only to 85°C. For 105°C continuous operation, use upgrade substitutes LGU1K682MELC (3000 hours @ 105°C) or LGY1K682MELC45 (5000 hours @ 105°C), which extend the operating temperature range to -40°C ~ 105°C.

Q: Which substitute offers the best inventory availability?

A: LLS1K682MELC (Nichicon LLS series) provides the highest inventory availability at 273,782 pieces in stock, compared to 865 pieces for the original 688LBA080M2EG.