687KXM100M Equivalent & Substitute Parts Reference

Part Overview

The 687KXM100M is a 680 µF, 100 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier / Illinois Capacitor. This component is classified as Active product status and is designed for general purpose applications. The capacitor features a 5000-hour lifetime at 105°C operating temperature and operates across the temperature range of -55°C to 105°C.

Substitute parts become necessary when the primary part experiences supply constraints, inventory depletion, or when design requirements mandate alternative manufacturers for supply chain resilience or application-specific certifications such as automotive qualification.

Substiute Parts

687KXM100M

Cornell Dubilier / Illinois CapacitorIn Stock: 1117687KXM100M Datasheet

Current PartRFQ

B41858C9687M000

EPCOS - TDK ElectronicsIn Stock: 3935B41858C9687M000 Datasheet

DirectRFQ

ELXV101ELL681MM40S

Chemi-ConIn Stock: 3963ELXV101ELL681MM40S Datasheet

DirectRFQ

UPJ2A681MHD

NichiconIn Stock: 1200UPJ2A681MHD Datasheet

DirectRFQ

UPM2A681MHD

NichiconIn Stock: 719UPM2A681MHD Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 687KXM100M is determined by strict equivalence across the following critical parameters:

Primary Equivalence Criteria:

• Capacitance: 680 µF (exact match required)
• Voltage Rating: 100 V (exact match required)
• Tolerance: ±20% (exact match required)
• Lifetime: 5000 Hrs @ 105°C (exact match required)
• Operating Temperature: -55°C ~ 105°C (exact match required)
• Polarization: Polar (exact match required)
• Package Type: Radial, Can (exact match required)
• Lead Spacing: 0.295" (7.50mm) (exact match required)
• Physical Dimensions: 0.709" Dia (18.00mm) (exact match required)
• Mounting Type: Through Hole (exact match required)

Secondary Compatibility Parameters:

• ESR (Equivalent Series Resistance): Varies by manufacturer; lower ESR indicates improved performance characteristics
• Ripple Current Ratings: Varies by frequency and manufacturer; must meet or exceed application requirements
• Impedance: Varies by manufacturer; lower impedance indicates superior high-frequency performance
• RoHS Compliance: All substitute parts maintain ROHS3 Compliant status

All substitute parts listed below satisfy the primary equivalence criteria and are therefore electrically and mechanically interchangeable with the 687KXM100M.

Parameter Comparison

Engineering Selection Recommendations

Active Product Status Substitutes:

B41858C9687M000 (EPCOS - TDK Electronics) and ELXV101ELL681MM40S (Chemi-Con) are both classified as Active product status. These parts are suitable for new designs and ongoing production applications. B41858C9687M000 is designated for automotive applications and features improved ESR performance (44mOhm @ 10kHz) compared to the primary part. ELXV101ELL681MM40S carries AEC-Q200 automotive qualification and demonstrates lower impedance (41 mOhms).

Not For New Designs Status:

UPJ2A681MHD and UPM2A681MHD (both Nichicon) are classified as Not For New Designs. These parts remain electrically and mechanically equivalent but should be reserved for legacy system maintenance, repair, or replacement applications only. UPM2A681MHD carries AEC-Q200 automotive qualification despite its product status classification.

Compliance Considerations:

All substitute parts maintain ROHS3 Compliant status. ELXV101ELL681MM40S and UPM2A681MHD carry AEC-Q200 automotive qualification ratings, making them suitable for automotive circuit applications where such certification is required. The primary part 687KXM100M does not specify automotive qualification.

Performance Differentiation:

Impedance values vary across substitute parts, ranging from 36 mOhms (Nichicon UPJ2A681MHD and UPM2A681MHD) to 103 mOhms (primary part 687KXM100M). Lower impedance values indicate superior performance at high frequencies. ESR specifications are provided only for the primary part and B41858C9687M000, with B41858C9687M000 demonstrating significantly lower ESR (44mOhm @ 10kHz versus 195mOhm @ 120Hz).

Frequently Asked Questions (FAQ)

Q: Can I substitute the 687KXM100M with any of the listed parts without PCB modification?

A: Yes. All listed substitute parts are mechanically and electrically equivalent. They share identical lead spacing (0.295" / 7.50mm), identical capacitance (680 µF), identical voltage rating (100 V), and identical mounting type (Through Hole, Radial Can package). Physical dimensions are equivalent with maximum height variation of 0.020" (0.50mm) between parts, which does not require PCB layout changes for standard through-hole applications.

Q: What is the difference between Active and Not For New Designs product status?

A: Active status indicates the manufacturer continues production and supports the part for new design implementations. Not For New Designs status indicates the manufacturer has discontinued active development but maintains limited production for legacy system support and replacement applications. For new circuit designs, select B41858C9687M000 or ELXV101ELL681MM40S, both classified as Active.

Q: Which substitute part offers the best high-frequency performance?

A: UPJ2A681MHD and UPM2A681MHD both feature the lowest impedance at 36 mOhms, indicating superior high-frequency performance characteristics. However, these parts carry Not For New Designs status. For new designs requiring optimized high-frequency performance with Active status, B41858C9687M000 (42 mOhms impedance) or ELXV101ELL681MM40S (41 mOhms impedance) are appropriate selections.

Q: Are any substitute parts qualified for automotive applications?

A: Yes. ELXV101ELL681MM40S (Chemi-Con) and UPM2A681MHD (Nichicon) both carry AEC-Q200 automotive qualification ratings. These parts are suitable for automotive circuit applications where such certification is contractually or specification-mandated. The primary part 687KXM100M does not specify automotive qualification.

Q: What is the significance of ESR (Equivalent Series Resistance) in capacitor selection?

A: ESR directly affects capacitor performance in ripple current applications and high-frequency circuits. Lower ESR values reduce heat generation and improve voltage stability under transient load conditions. The primary part specifies 195mOhm @ 120Hz, while B41858C9687M000 specifies 44mOhm @ 10kHz. ESR specifications are measured at different frequencies, making direct comparison dependent on application frequency characteristics.

Q: Can I use these substitute parts in legacy systems currently using the 687KXM100M?

A: Yes. All substitute parts are backward compatible with existing 687KXM100M installations. The electrical and mechanical specifications are equivalent, ensuring drop-in replacement capability without circuit redesign or PCB modification.

Q: What inventory considerations should I evaluate when selecting a substitute?

A: Current inventory levels are: 687KXM100M (1029 Pcs), B41858C9687M000 (3915 Pcs), ELXV101ELL681MM40S (3892 Pcs), UPJ2A681MHD (1118 Pcs), and UPM2A681MHD (700 Pcs). For applications requiring immediate availability and long-term supply assurance, B41858C9687M000 and ELXV101ELL681MM40S offer superior inventory depth.