Equivalent & Substitute Parts for 688LBB080M2DH

Part Overview

The 688LBB080M2DH is a 6800 µF, 80 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 active in production status with ROHS3 compliance and REACH unaffected classification. Substitute parts are identified when equivalent capacitance, voltage rating, tolerance, lifetime, and mechanical form factor specifications align with the original component, enabling direct replacement in circuit designs.

Substiute Parts

688LBB080M2DH

Cornell Dubilier / Illinois CapacitorIn Stock: 964688LBB080M2DH Datasheet

Current PartRFQ

SLPX682M080E9P3

Cornell Dubilier Electronics (CDE)In Stock: 944SLPX682M080E9P3 Datasheet

DirectRFQ

380LX682M080K052

Cornell Dubilier Electronics (CDE)In Stock: 7377380LX682M080K052 Datasheet

Parametric EquivalentRFQ

LLS1K682MELB

NichiconIn Stock: 273842LLS1K682MELB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 688LBB080M2DH are qualified based on the following critical parameters that determine functional equivalence:

Core Electrical Parameters:

• Capacitance: 6800 µF (exact match required)
• Voltage Rating: 80 V (exact match required)
• Tolerance: ±20% (exact match required)
• Lifetime: 3000 Hrs @ 85°C (exact match required)
• Operating Temperature: -40°C ~ 85°C (exact match required)
• Polarization: Polar (exact match required)

Mechanical Parameters:

• Package Type: Radial, Can - Snap-In (exact match required)
• Mounting Type: Through Hole (exact match required)
• Lead Spacing: 0.394" (10.00mm) (exact match required)
• Diameter: 1.181" (30.00mm) (exact match required)

Compliance Parameters:

• RoHS Status: ROHS3 Compliant (required)
• REACH Status: REACH Unaffected (required)

All three substitute parts meet these criteria. Variations in ESR (Equivalent Series Resistance) and ripple current specifications are secondary parameters that do not disqualify substitution when all primary parameters align.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are qualified for direct replacement of the 688LBB080M2DH based on matching electrical and mechanical specifications. Selection among the substitutes is determined by availability and compliance requirements:

SLPX682M080E9P3 (Cornell Dubilier Electronics): This direct manufacturer substitute maintains identical capacitance, voltage, tolerance, and lifetime specifications. The height dimension is 1.969" (50.00mm), which is 0.078" shorter than the main part. This dimensional difference must be evaluated for PCB layout clearance in the target application. ESR is 49 mOhm at 120 Hz, representing a 34% increase from the main part specification. This part is ROHS3 compliant and REACH unaffected.

380LX682M080K052 (Cornell Dubilier Electronics): This parametric equivalent maintains all critical electrical and mechanical specifications with identical height to the main part at 2.047" (52.00mm). ESR is 45 mOhm at 120 Hz, representing a 23% increase from the main part. This part is ROHS3 compliant and REACH unaffected with 7320 pieces in stock, providing the highest inventory availability.

LLS1K682MELB (Nichicon): This parametric equivalent from Nichicon meets all electrical and mechanical requirements with identical height at 2.047" (52.00mm). ESR specification is not provided in the available data. This part is ROHS3 compliant and REACH unaffected with 273782 pieces in stock, representing the largest available inventory across all options.

All substitute parts carry active product status and meet regulatory compliance requirements for ROHS3 and REACH classifications.

Frequently Asked Questions (FAQ)

Q: Can SLPX682M080E9P3 be used as a direct replacement for 688LBB080M2DH?

A: SLPX682M080E9P3 is electrically and mechanically compatible with the 688LBB080M2DH. The primary consideration is the height dimension: SLPX682M080E9P3 measures 1.969" (50.00mm) seated height compared to 2.047" (52.00mm) for the main part. This 0.078" difference must be evaluated for PCB layout and mechanical clearance in the target application. All other parameters, including capacitance, voltage, tolerance, lifetime, lead spacing, and diameter, are identical.

Q: What is the difference in ESR between the main part and substitute parts?

A: The 688LBB080M2DH specifies 36.57 mOhm ESR at 120 Hz. SLPX682M080E9P3 specifies 49 mOhm (34% higher), and 380LX682M080K052 specifies 45 mOhm (23% higher). LLS1K682MELB does not provide ESR specification in available data. ESR affects ripple current handling and heat dissipation characteristics. Applications with strict ESR requirements should prioritize 380LX682M080K052 or verify ESR specifications for LLS1K682MELB with the manufacturer.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All three substitute parts—SLPX682M080E9P3, 380LX682M080K052, and LLS1K682MELB—are ROHS3 compliant and REACH unaffected, matching the compliance status of the main part 688LBB080M2DH.

Q: What is the difference in ripple current ratings?

A: The 688LBB080M2DH specifies 5.16 A at 120 Hz and 6.45 A at 10 kHz. SLPX682M080E9P3 specifies 5.27 A at 120 Hz and 6.59 A at 20 kHz. 380LX682M080K052 specifies 5.16 A at 120 Hz and 5.93 A at 20 kHz. LLS1K682MELB specifies 5.27 A at 120 Hz and 6.0605 A at 50 kHz. All parts meet or exceed the low-frequency ripple current requirement. High-frequency ripple current varies by frequency measurement point; applications with specific high-frequency ripple requirements should select based on the frequency of operation.

Q: Can I use LLS1K682MELB from Nichicon as a substitute?

A: Yes. LLS1K682MELB meets all critical electrical and mechanical specifications for substitution. It is ROHS3 compliant, REACH unaffected, and carries active product status. The primary difference is that ESR specification is not provided in available data. Applications requiring specific ESR performance should obtain this specification from Nichicon or select an alternative with documented ESR values.

Q: Which substitute part has the best inventory availability?

A: LLS1K682MELB from Nichicon has the highest inventory availability at 273782 pieces in stock. 380LX682M080K052 from Cornell Dubilier has 7320 pieces in stock. SLPX682M080E9P3 has 903 pieces in stock. The main part 688LBB080M2DH has 916 pieces in stock.

Q: Are the lead spacing and diameter identical across all parts?

A: Yes. All parts, including the main part and all three substitutes, have identical lead spacing of 0.394" (10.00mm) and diameter of 1.181" (30.00mm). The only dimensional variation is in seated height, where SLPX682M080E9P3 measures 1.969" (50.00mm) compared to 2.047" (52.00mm) for the other parts.

Q: What is the operating temperature range for all parts?

A: All parts operate across the identical temperature range of -40°C to 85°C with a rated lifetime of 3000 hours at 85°C.