B41002A4685M Equivalent & Substitute Parts

Part Overview

The B41002A4685M is a 6.8 µF, 16 V aluminum electrolytic capacitor in radial, can package manufactured by EPCOS - TDK Electronics. This component is rated for 1000 hours at 85°C and is designed for general-purpose applications. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring similar electrical characteristics.

Key Parameters

Parameter	Value
Capacitance	6.8 µF
Voltage Rating	16 V
Tolerance	±20%
Package Type	Radial, Can
Lead Spacing	0.059" (1.50 mm)
Case Diameter	0.157" (4.00 mm)
Height	0.315" (8.00 mm)
Mounting Type	Through Hole
Operating Temperature Range	-40°C ~ 85°C
Polarization	Polar

Substitute Part Grouping Explanation

Substitution for the B41002A4685M is determined by the following critical parameters:

Capacitance Value: 6.8 µF (exact match required)
Voltage Rating: Minimum 16 V (higher ratings acceptable for backward compatibility)
Package Dimensions: Lead spacing 0.059" (1.50 mm), case diameter 0.157" (4.00 mm), height 0.315" (8.00 mm)
Mounting Type: Through Hole radial configuration
Tolerance: ±20%
Polarization: Polar

The substitute parts listed below meet or exceed these core parameters, ensuring mechanical and electrical compatibility with the original B41002A4685M footprint and circuit requirements.

Parameter Comparison

Parameter	B41002A4685M (Original)	685PUM035M (Substitute)	EEA-FC1V6R8 (Substitute)
Manufacturer	EPCOS - TDK Electronics	Cornell Dubilier / Illinois Capacitor	Panasonic Electronic Components
Capacitance	6.8 µF	6.8 µF	6.8 µF
Voltage Rating	16 V	35 V	35 V
Tolerance	±20%	±20%	±20%
Lead Spacing	0.059" (1.50 mm)	0.059" (1.50 mm)	0.059" (1.50 mm)
Case Diameter	0.157" (4.00 mm)	0.157" (4.00 mm)	0.157" (4.00 mm)
Height	0.315" (8.00 mm)	0.315" (8.00 mm)	0.315" (8.00 mm)
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Can	Radial, Can	Radial, Can
Operating Temperature Range	-40°C ~ 85°C	-40°C ~ 85°C	-55°C ~ 105°C
Lifetime @ Temperature	1000 Hrs @ 85°C	2000 Hrs @ 85°C	1000 Hrs @ 105°C
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Both substitute parts are active products with current manufacturing status, ensuring long-term availability and supply chain stability compared to the obsolete B41002A4685M.

685PUM035M provides a direct form-factor replacement with identical mechanical dimensions and lead spacing. The 35 V voltage rating provides increased design margin over the original 16 V specification. This part maintains the same operating temperature range as the original and offers extended lifetime (2000 hours at 85°C versus 1000 hours).

EEA-FC1V6R8 offers the same capacitance and tolerance with a higher voltage rating (35 V) and extended operating temperature range (-55°C ~ 105°C). This part carries AEC-Q200 automotive qualification and is suitable for applications requiring enhanced temperature performance and automotive-grade reliability. The identical mechanical footprint ensures direct PCB compatibility.

Both substitutes are ROHS3 compliant and maintain the same HTSUS classification as the original part.

Frequently Asked Questions (FAQ)

Q: Can I use a 35 V rated capacitor in place of the original 16 V part?

A: Yes. The substitute parts rated at 35 V are electrically compatible with circuits designed for 16 V operation. Higher voltage ratings provide increased design margin and do not negatively affect circuit performance in lower-voltage applications.

Q: Are the mechanical dimensions identical between the original and substitute parts?

A: Yes. Both substitute parts maintain the same lead spacing (0.059" / 1.50 mm), case diameter (0.157" / 4.00 mm), and height (0.315" / 8.00 mm), ensuring direct PCB footprint compatibility without layout modifications.

Q: What is the difference between the two substitute options?

A: The 685PUM035M is a general-purpose replacement with extended lifetime at 85°C. The EEA-FC1V6R8 offers a wider operating temperature range (-55°C ~ 105°C) and carries AEC-Q200 automotive qualification, making it suitable for automotive and high-temperature applications.

Q: Are both substitutes available in production quantities?

A: Yes. The 685PUM035M has 744 pieces in stock, and the EEA-FC1V6R8 has 2743 pieces in stock as new original inventory.

Q: Do the substitutes meet the same compliance standards as the original?

A: Yes. Both substitute parts are ROHS3 compliant and carry the same HTSUS classification (8532.22.0020) as the original B41002A4685M.

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