687LMX200M2CF Aluminum Electrolytic Capacitor - Equivalent & Substitute Parts

Part Overview

The 687LMX200M2CF is a 680 µF, 200 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the LMX series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring stable capacitance and reliable performance across industrial temperature ranges. The part maintains Active product status with 663 units currently in stock.

Equivalent and substitute parts are identified to provide design flexibility, ensure supply chain continuity, and accommodate application-specific performance requirements such as extended lifetime ratings or alternative thermal specifications.

Substiute Parts

687LMX200M2CF

Cornell Dubilier / Illinois CapacitorIn Stock: 682687LMX200M2CF Datasheet

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LGR2D681MELA40

NichiconIn Stock: 712LGR2D681MELA40 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 687LMX200M2CF is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Capacitance: 680 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Voltage Rating: 200 V (exact match required)
• Polarization: Polar (exact match required)

Mechanical Parameters:

• Package Type: Radial, Can - Snap-In (exact match required)
• Lead Spacing: 0.394" (10.00 mm) (exact match required)
• Physical Dimensions: 0.984" Dia × 1.654" Height (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)

The substitute part LGR2D681MELA40 meets all critical electrical, mechanical, and compliance requirements. Performance characteristics such as ESR, ripple current ratings, and lifetime specifications may vary within acceptable engineering tolerances for general-purpose applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 687LMX200M2CF and LGR2D681MELA40 are Active products with full ROHS3 compliance and REACH Unaffected status, making them suitable for regulated applications.

Primary Part Selection (687LMX200M2CF): Select this part when Cornell Dubilier / Illinois Capacitor sourcing is required or when the specified ESR and ripple current characteristics are critical to circuit performance.

Substitute Part Selection (LGR2D681MELA40): Select this Nichicon part when extended lifetime performance is required. The LGR2D681MELA40 provides double the rated lifetime (10000 Hrs @ 105°C versus 5000 Hrs @ 105°C) and an expanded operating temperature range (-40°C ~ 105°C versus -25°C ~ 105°C). This part is suitable for applications requiring enhanced thermal stability or long-term reliability in demanding environments.

Both parts are mechanically and electrically interchangeable for general-purpose applications where the specified electrical parameters are met.

Frequently Asked Questions (FAQ)

Q: Can the LGR2D681MELA40 be used as a direct replacement for the 687LMX200M2CF?

A: Yes. Both parts share identical capacitance (680 µF), voltage rating (200 V), tolerance (±20%), and physical dimensions (0.984" Dia × 1.654" Height). The snap-in radial can package and 10.00 mm lead spacing are identical, enabling direct PCB mounting compatibility.

Q: What are the key differences between these two parts?

A: The primary differences are manufacturer (Cornell Dubilier versus Nichicon), series designation (LMX versus LGR), and performance characteristics. The LGR2D681MELA40 offers extended lifetime (10000 Hrs @ 105°C), wider operating temperature range (-40°C to 105°C), and lower ripple current ratings. The 687LMX200M2CF specifies higher ripple current capability (2.8812 A @ 50 kHz).

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the 687LMX200M2CF and LGR2D681MELA40 are ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements for electronic components.

Q: Which part should be selected for high-temperature or extended-life applications?

A: The LGR2D681MELA40 is recommended for applications requiring extended operational life or exposure to lower temperature extremes. Its 10000-hour lifetime rating at 105°C and -40°C minimum operating temperature provide enhanced performance margins in demanding thermal environments.

Q: Are there any mounting or footprint considerations when substituting these parts?

A: No. Both parts use identical through-hole snap-in mounting with 0.394" (10.00 mm) lead spacing and 0.984" (25.00 mm) diameter cans. PCB footprints and mounting hardware are fully compatible.

Q: What is the significance of the ESR specification?

A: The 687LMX200M2CF specifies 365.7 mOhm ESR @ 120 Hz. The LGR2D681MELA40 does not provide ESR data in the available specifications. For applications where ESR is a critical design parameter, the 687LMX200M2CF should be selected or ESR verification should be obtained from Nichicon.