688LBB080M2EF Equivalent & Substitute Parts Reference

Part Overview

The 688LBB080M2EF 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 requiring high capacitance at moderate voltage ratings. The part is currently Active in product status with 978 pieces in stock. Equivalent and substitute parts are necessary when the primary part becomes unavailable, when inventory constraints require alternative sourcing, or when design flexibility permits selection from multiple qualified manufacturers meeting identical electrical and mechanical specifications.

Substiute Parts

688LBB080M2EF

Cornell Dubilier / Illinois CapacitorIn Stock: 1059688LBB080M2EF Datasheet

Current PartRFQ

SLPX682M080H7P3

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

DirectRFQ

80USG6800MEFCSN35X40

RubyconIn Stock: 86580USG6800MEFCSN35X40 Datasheet

Parametric EquivalentRFQ

LLS1K682MELC

NichiconIn Stock: 273801LLS1K682MELC Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 688LBB080M2EF is determined by strict equivalence across the following parameters:

Critical 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)

Critical Mechanical Parameters:

• Package Type: Radial, Can - Snap-In (exact match required)
• Lead Spacing: 0.394" (10.00mm) (exact match required)
• Diameter: 1.378" (35.00mm) (exact match required)
• Mounting Type: Through Hole (exact match required)

Compliance Parameters:

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

All substitute parts listed below meet these criteria. Secondary parameters such as ESR and ripple current may vary within acceptable ranges for the product category while maintaining functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

All four parts listed—688LBB080M2EF, SLPX682M080H7P3, 80USG6800MEFCSN35X40, and LLS1K682MELC—are functionally equivalent for applications requiring 6800 µF, 80 V aluminum electrolytic capacitors with snap-in radial mounting. All parts maintain Active product status and comply with ROHS3 and REACH requirements.

Selection Considerations Based on Provided Data:

The SLPX682M080H7P3 (Cornell Dubilier Electronics) differs in maximum seated height at 1.575" (40.00mm) compared to 1.654" (42.00mm) for the other three parts. This 0.079" (2.00mm) height reduction may be advantageous in space-constrained applications. However, this part exhibits higher ESR at 49 mOhm versus 36.57 mOhm for the primary part.

The LLS1K682MELC (Nichicon) offers the highest current inventory at 273,782 pieces, providing superior availability for high-volume procurement requirements.

The 80USG6800MEFCSN35X40 (Rubycon) demonstrates the highest ripple current capability at 5.83 A @ 120 Hz and 6.705 A @ 100 kHz, suitable for applications with elevated ripple current demands.

All parts are suitable for general-purpose applications across the -40°C to 85°C operating temperature range with 3000-hour lifetime at 85°C.

Frequently Asked Questions (FAQ)

Q: Can SLPX682M080H7P3 be used as a direct replacement for 688LBB080M2EF?

A: Yes. Both parts meet all critical electrical and mechanical specifications: 6800 µF capacitance, 80 V rating, ±20% tolerance, 3000 Hrs @ 85°C lifetime, -40°C to 85°C operating range, and identical lead spacing and diameter. The SLPX682M080H7P3 has a 2.00mm shorter maximum height (40.00mm vs. 42.00mm), which may require verification for PCB layout compatibility. ESR is higher at 49 mOhm versus 36.57 mOhm.

Q: What is the difference between the substitute parts?

A: All substitute parts share identical capacitance, voltage, tolerance, lifetime, temperature range, and mechanical dimensions. Differences exist in ESR values (where specified), ripple current ratings, and maximum seated height. The SLPX682M080H7P3 is 2.00mm shorter. ESR and ripple current variations are within acceptable ranges for the product category and do not affect functional equivalence for general-purpose applications.

Q: Are all substitute parts RoHS and REACH compliant?

A: Yes. All four parts are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: Which substitute part has the best availability?

A: The LLS1K682MELC (Nichicon) has the highest inventory at 273,782 pieces in stock, followed by SLPX682M080H7P3 (Cornell Dubilier Electronics) at 4,611 pieces.

Q: Can I use these parts interchangeably on the same PCB?

A: Yes, provided the PCB layout accommodates the maximum seated height of each part. The SLPX682M080H7P3 has a maximum height of 40.00mm, while the other three parts are 42.00mm. All parts share identical lead spacing (10.00mm) and diameter (35.00mm), ensuring mechanical compatibility with standard through-hole snap-in mounting footprints.

Q: What applications are these capacitors suitable for?

A: These parts are rated for general-purpose applications. All maintain specifications across the -40°C to 85°C operating temperature range with 3000-hour lifetime at 85°C, making them suitable for power supply filtering, energy storage, and general industrial applications within these thermal and temporal constraints.