B43508B9687M62 Equivalent & Substitute Parts

Part Overview

The B43508B9687M62 is a 680 µF, 400 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by EPCOS - TDK Electronics. This component is classified as Active product status and serves general-purpose applications requiring high-capacitance energy storage at elevated voltage ratings. The part is ROHS3 compliant and REACH unaffected, meeting modern environmental standards.

Substitute parts become necessary when the original part number reaches end-of-life status, inventory constraints occur, or when improved performance characteristics within the same electrical and mechanical envelope are required for system optimization.

Substiute Parts

B43508B9687M62

EPCOS - TDK ElectronicsIn Stock: 273929B43508B9687M62 Datasheet

Current PartRFQ

B43644A9687M000

EPCOS - TDK ElectronicsIn Stock: 1240B43644A9687M000 Datasheet

UpgradeRFQ

B43508B9687M000

EPCOS - TDK ElectronicsIn Stock: 273881B43508B9687M000 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the B43508B9687M62 is determined by strict electrical and mechanical parameter matching:

Electrical Parameters (Critical):

• Capacitance: 680 µF (exact match required)
• Voltage Rating: 400 V (exact match required)
• Tolerance: ±20% (exact match required)
• Operating Temperature Range: -40°C ~ 105°C (exact match required)
• Polarization: Polar (exact match required)

Mechanical Parameters (Critical):

• Lead Spacing: 0.394" (10.00 mm) (exact match required)
• Size / Dimension: 1.378" Dia (35.00 mm) (exact match required)
• Height - Seated (Max): 1.850" (47.00 mm) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial, Can - Snap-In (exact match required)

Performance Parameters (Allowable Variation):

• ESR @ 100Hz: Lower values are acceptable (improved performance)
• Lifetime @ Temperature: Higher values are acceptable (improved reliability)
• Ripple Current @ 100 Hz: Higher values are acceptable (improved capability)
• Impedance: Lower values are acceptable (improved performance)

Substitute parts must maintain identical electrical and mechanical specifications while allowing improvements in performance characteristics. Series designation may differ provided all critical parameters remain unchanged.

Parameter Comparison

Engineering Selection Recommendations

B43644A9687M000 (Upgrade Substitute): This part represents an upgraded alternative within the same physical and electrical envelope. The B43644A9687M000 maintains all critical electrical and mechanical parameters while delivering improved performance characteristics: reduced ESR (140 mOhm vs. 180 mOhm), extended lifetime rating (5000 Hrs vs. 3000 Hrs @ 105°C), and increased ripple current capability (2.53 A vs. 2.07 A @ 100 Hz). Both parts are ROHS3 compliant and REACH unaffected. Selection of this upgrade is appropriate when enhanced reliability and lower impedance characteristics are beneficial to system performance.

B43508B9687M000 (Parametric Equivalent): This part is a direct parametric equivalent to the B43508B9687M62, maintaining identical electrical performance specifications and mechanical dimensions. The primary distinction is packaging format (Bulk vs. original packaging). Both parts are ROHS3 compliant and REACH unaffected. This substitute is appropriate for direct replacement applications where original performance characteristics are required and packaging format is not a constraint.

Frequently Asked Questions (FAQ)

Q: Can B43644A9687M000 be used as a direct replacement for B43508B9687M62?

A: Yes. The B43644A9687M000 meets all critical electrical and mechanical substitution criteria. It maintains identical capacitance (680 µF), voltage rating (400 V), tolerance (±20%), operating temperature range (-40°C ~ 105°C), and physical dimensions (1.378" Dia × 1.850" Height, 10.00 mm lead spacing). The improved performance characteristics (lower ESR, extended lifetime, higher ripple current) are compatible with applications designed for the original part.

Q: What is the difference between B43508B9687M62 and B43508B9687M000?

A: These parts are parametrically identical in all electrical and mechanical specifications. The primary difference is packaging format: B43508B9687M62 is supplied in standard packaging, while B43508B9687M000 is supplied in bulk packaging. Both maintain identical performance characteristics and compliance certifications.

Q: Are all three parts suitable for the same PCB layout?

A: Yes. All three parts (B43508B9687M62, B43644A9687M000, and B43508B9687M000) share identical mechanical specifications: 1.378" diameter, 1.850" maximum seated height, and 10.00 mm lead spacing. PCB footprints and mounting requirements are interchangeable.

Q: What compliance certifications apply to these substitute parts?

A: All three parts are ROHS3 compliant and REACH unaffected. These certifications meet current environmental and regulatory requirements for electronic component manufacturing and use.

Q: Does the improved ESR of B43644A9687M000 affect circuit design?

A: The reduced ESR (140 mOhm vs. 180 mOhm) of B43644A9687M000 represents improved performance. Lower ESR reduces heat generation and improves frequency response characteristics. Circuits designed for the original part will operate within specification with this substitute; no design modifications are required.