B41858E8687M9 Equivalent & Substitute Parts

Part Overview

The B41858E8687M9 is a 680 µF, 63 V aluminum electrolytic capacitor in radial, can package manufactured by EPCOS - TDK Electronics. This component is designed for automotive applications requiring stable capacitance and extended operational life at elevated temperatures. The part is currently obsolete, making identification of compatible substitute components essential for ongoing system support and procurement planning.

Substiute Parts

B41858E8687M9

EPCOS - TDK ElectronicsIn Stock: 970B41858E8687M9 Datasheet

Current PartRFQ

EEU-FC1J681SB

Panasonic Electronic ComponentsIn Stock: 818EEU-FC1J681SB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the B41858E8687M9 is determined by strict equivalence across the following parameters:

• Capacitance value: 680 µF (exact match required)
• Voltage rating: 63 V (exact match required)
• Tolerance: ±20% (exact match required)
• Package configuration: Radial, can format with through-hole mounting
• Physical dimensions: Lead spacing 0.295" (7.50 mm), diameter 0.709" (18.00 mm), height 0.866" (22.00 mm)
• Operating temperature range: -55°C to 105°C (minimum requirement)
• Lifetime rating: 5000 Hrs @ 105°C (minimum requirement)
• Polarization: Polar (exact match required)
• Compliance: ROHS3 compliant, REACH unaffected

The EEU-FC1J681SB from Panasonic Electronic Components meets all specified parameters and is classified as an active product with automotive-grade qualification (AEC-Q200).

Parameter Comparison

Engineering Selection Recommendations

The EEU-FC1J681SB is a direct parametric equivalent to the B41858E8687M9. Both components share identical electrical specifications, physical dimensions, and compliance certifications. The Panasonic component carries AEC-Q200 automotive qualification and active product status, ensuring continued availability and supply chain stability. For applications currently using the B41858E8687M9, the EEU-FC1J681SB provides equivalent performance with the advantage of ongoing manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can the EEU-FC1J681SB be used as a direct replacement for the B41858E8687M9?

A: Yes. Both components have identical capacitance (680 µF), voltage rating (63 V), tolerance (±20%), physical dimensions, lead spacing, and operating temperature range. The through-hole radial can package is identical, allowing direct PCB mounting without modification.

Q: What is the difference in ripple current handling between these parts?

A: The B41858E8687M9 specifies 1.427 A @ 100 kHz. The EEU-FC1J681SB specifies 2.29 A @ 100 kHz. The Panasonic component demonstrates higher ripple current capacity at high frequency, which is advantageous for applications with demanding AC current requirements.

Q: Are there compliance differences between the two parts?

A: Both components are ROHS3 compliant and REACH unaffected. The EEU-FC1J681SB carries AEC-Q200 automotive qualification, confirming suitability for automotive applications.

Q: Why is the B41858E8687M9 marked as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The EEU-FC1J681SB, as an active product, represents the current equivalent for new designs and ongoing procurement.

Q: Are the packaging options different?

A: The B41858E8687M9 packaging is listed as standard. The EEU-FC1J681SB is supplied in Tape & Box (TB) format. Both are through-hole radial can packages with identical physical specifications suitable for the same PCB footprint.