687KXM010MLN Equivalent & Substitute Parts

Part Overview

The 687KXM010MLN is a 680 µF, 10 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the KXM series. This radial, through-hole component is designed for general-purpose applications with a rated lifetime of 4000 hours at 105°C. The part is currently active in production and RoHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical specifications are required due to inventory constraints, application-specific performance needs, or design optimization requirements.

Key Parameters

Parameter	Specification
Capacitance	680 µF
Voltage Rating	10 V
Tolerance	±20%
Operating Temperature Range	-55°C to 105°C
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.197" (5.00 mm)
Case Diameter	0.394" (10.00 mm)
Height (Seated Max)	0.551" (14.00 mm)
RoHS Status	RoHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the 687KXM010MLN is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

Capacitance value: 680 µF (exact match)
Voltage rating: 10 V (exact match or higher)
Tolerance: ±20% (matching or tighter tolerance acceptable)
Operating temperature range: -55°C to 105°C (minimum requirement)
Polarization: Polar (must match)

Mechanical Equivalence Requirements:

Mounting type: Through Hole (exact match)
Package type: Radial, Can (exact match)
Lead spacing: 0.197" (5.00 mm) (exact match)
Case diameter: 0.394" (10.00 mm) (exact match)
Height (seated max): 0.551" (14.00 mm) (exact match)

Compliance Requirements:

RoHS3 compliance (required)
REACH unaffected status (required)

The identified substitute part meets all electrical and mechanical equivalence criteria, ensuring direct interchangeability in PCB layouts and circuit designs without modification.

Parameter Comparison

Parameter	687KXM010MLN (Cornell Dubilier)	ELXZ100ELL681MJC5S (Chemi-Con)
Manufacturer	Cornell Dubilier / Illinois Capacitor	Chemi-Con
Series	KXM	LXZ
Capacitance	680 µF	680 µF
Voltage Rating	10 V	10 V
Tolerance	±20%	±20%
Operating Temperature	-55°C to 105°C	-55°C to 105°C
Polarization	Polar	Polar
Lifetime @ 105°C	4000 Hrs	5000 Hrs
Ripple Current @ 120 Hz	456 mA	456 mA
Impedance	194 mOhms	90 mOhms
Lead Spacing	0.197" (5.00 mm)	0.197" (5.00 mm)
Case Diameter	0.394" (10.00 mm)	0.394" (10.00 mm)
Height (Seated Max)	0.551" (14.00 mm)	0.551" (14.00 mm)
Mounting Type	Through Hole	Through Hole
Package Type	Radial, Can	Radial, Can
RoHS Status	RoHS3 Compliant	RoHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected
Product Status	Active	Active

Engineering Selection Recommendations

Both the 687KXM010MLN and ELXZ100ELL681MJC5S are active production components with full RoHS3 compliance and REACH unaffected status, qualifying them for equivalent use in general-purpose and automotive applications respectively.

The ELXZ100ELL681MJC5S (Chemi-Con LXZ series) provides extended thermal lifetime (5000 hours at 105°C versus 4000 hours) and lower impedance (90 mOhms versus 194 mOhms), with AEC-Q200 automotive qualification. These characteristics make it suitable for applications requiring enhanced reliability or lower ESR performance.

The 687KXM010MLN (Cornell Dubilier KXM series) remains the primary specification for general-purpose applications where the baseline 4000-hour lifetime and specified impedance are sufficient.

Selection between these parts is determined by application requirements, thermal stress conditions, and supply chain availability. Both parts maintain identical electrical ratings, mechanical dimensions, and compliance certifications, ensuring direct PCB interchangeability.

Frequently Asked Questions (FAQ)

Q: Can the ELXZ100ELL681MJC5S replace the 687KXM010MLN in existing designs?

A: Yes. Both parts share identical capacitance (680 µF), voltage rating (10 V), tolerance (±20%), operating temperature range (-55°C to 105°C), and mechanical dimensions (lead spacing 5.00 mm, case diameter 10.00 mm, height 14.00 mm). Through-hole radial mounting and RoHS3 compliance are equivalent. Direct substitution is possible without PCB layout modification.

Q: What are the differences between these two parts?

A: The primary differences are manufacturer (Cornell Dubilier versus Chemi-Con), series designation (KXM versus LXZ), thermal lifetime (4000 hours versus 5000 hours at 105°C), impedance (194 mOhms versus 90 mOhms), and application focus (general-purpose versus automotive with AEC-Q200 qualification). Electrical ratings and mechanical specifications are identical.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the 687KXM010MLN and ELXZ100ELL681MJC5S are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What does the lower impedance of the ELXZ100ELL681MJC5S indicate?

A: Lower impedance (90 mOhms versus 194 mOhms) indicates reduced equivalent series resistance, resulting in lower voltage drop across the capacitor during ripple current conditions and improved high-frequency performance. This characteristic is beneficial in applications with stringent ripple current or transient response requirements.

Q: Can these parts be used interchangeably in automotive applications?

A: The ELXZ100ELL681MJC5S carries AEC-Q200 automotive qualification, making it the specified choice for automotive applications. The 687KXM010MLN is rated for general-purpose use. While mechanically and electrically equivalent, application-specific certifications should guide selection for regulated automotive environments.

Q: What is the significance of the extended 5000-hour lifetime in the ELXZ100ELL681MJC5S?

A: The extended thermal lifetime (5000 hours at 105°C versus 4000 hours) indicates longer operational reliability under sustained elevated temperature conditions. This specification is relevant for applications with continuous thermal stress or extended service life requirements.

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