Equivalent & Substitute Parts for UCA2W6R8MPD

Part Overview

The UCA2W6R8MPD is a 6.8 µF, 450 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The part is designed for general-purpose applications requiring through-hole mounting with a 10,000-hour lifetime rating at 105°C.

Key Parameters

Parameter	Value
Capacitance	6.8 µF
Voltage Rating	450 V
Tolerance	±20%
Lifetime @ 105°C	10,000 Hrs
Operating Temperature Range	-25°C to 105°C
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.197" (5.00 mm)
Diameter	0.394" (10.00 mm)
Height	0.846" (21.50 mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the UCA2W6R8MPD is determined by strict equivalence across the following parameters: capacitance (6.8 µF), voltage rating (450 V), tolerance (±20%), polarization (polar), mounting type (through hole), package type (radial can), lead spacing (5.00 mm), and diameter (10.00 mm). Lifetime at 105°C, ripple current ratings, and height may vary within acceptable ranges for equivalent functionality. All substitute parts must maintain ROHS3 compliance and operate within the -25°C to 105°C temperature range.

The substitute parts are grouped as follows:

Direct Manufacturer Equivalents: Parts with identical electrical specifications and packaging from Nichicon (UCA2W6R8MPD1TD, UCS2W6R8MPD).

Direct Equivalents from Alternative Manufacturers: Parts meeting all core electrical and mechanical parameters from Rubycon and EPCOS-TDK Electronics (450BXC6.8MEFC10X20, 450LLE6R8MEFC10X20, B43890A5685M000).

Similar Equivalents: Parts with matching core parameters but minor variations in ripple current or height specifications (EKXG451ELL6R8MJ20S from Chemi-Con).

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Lead Spacing	Diameter	Height (Max)	Product Status	RoHS Status
UCA2W6R8MPD	Nichicon	6.8 µF	450 V	±20%	10,000 Hrs	5.00 mm	10.00 mm	21.50 mm	Obsolete	ROHS3
UCA2W6R8MPD1TD	Nichicon	6.8 µF	450 V	±20%	10,000 Hrs	5.00 mm	10.00 mm	21.50 mm	Not For New Designs	ROHS3
UCS2W6R8MPD	Nichicon	6.8 µF	450 V	±20%	8,000 Hrs	5.00 mm	10.00 mm	21.50 mm	Active	ROHS3
450BXC6.8MEFC10X20	Rubycon	6.8 µF	450 V	±20%	10,000 Hrs	5.00 mm	10.00 mm	22.00 mm	Active	ROHS3
450LLE6R8MEFC10X20	Rubycon	6.8 µF	450 V	±20%	20,000 Hrs	5.00 mm	10.00 mm	22.00 mm	Active	ROHS3
B43890A5685M000	EPCOS - TDK Electronics	6.8 µF	450 V	±20%	12,000 Hrs	5.00 mm	10.00 mm	22.00 mm	Active	ROHS3
EKXG451ELL6R8MJ20S	Chemi-Con	6.8 µF	450 V	±20%	8,000 Hrs	5.00 mm	10.00 mm	20.00 mm	Active	ROHS3

Engineering Selection Recommendations

For Direct Replacement (Obsolete Part Continuation): UCA2W6R8MPD1TD from Nichicon provides identical electrical and mechanical specifications with the same 10,000-hour lifetime. This part is classified as "Not For New Designs" but remains suitable for legacy system maintenance.

For Active Production (Recommended): UCS2W6R8MPD (Nichicon, Active status) is the manufacturer-recommended substitute. This part maintains all core electrical parameters with identical mechanical fit. The reduced lifetime (8,000 hours versus 10,000 hours) is offset by active product status and continued manufacturer support.

For Extended Lifetime Applications: 450LLE6R8MEFC10X20 (Rubycon, Active status) offers 20,000-hour lifetime at 105°C, doubling the original specification. This part is suitable for applications requiring enhanced reliability and extended service intervals.

For Alternative Sourcing: 450BXC6.8MEFC10X20 (Rubycon, Active status) and B43890A5685M000 (EPCOS-TDK Electronics, Active status) provide equivalent electrical performance with active product status. B43890A5685M000 offers 12,000-hour lifetime, providing a middle ground between standard and extended-life options.

For Cost-Optimized Selection: EKXG451ELL6R8MJ20S (Chemi-Con, Active status) is available in high inventory (17,900 units) and meets all core electrical specifications. The reduced height (20.00 mm versus 21.50 mm) may provide board layout advantages in space-constrained designs.

All substitute parts maintain ROHS3 compliance and operate within the specified temperature range of -25°C to 105°C.

Frequently Asked Questions (FAQ)

Q: Can UCA2W6R8MPD be directly replaced with UCS2W6R8MPD?

A: Yes. Both parts share identical capacitance (6.8 µF), voltage rating (450 V), tolerance (±20%), lead spacing (5.00 mm), diameter (10.00 mm), and mounting type (through hole). The primary difference is lifetime rating: UCS2W6R8MPD is rated for 8,000 hours at 105°C compared to 10,000 hours for the original. UCS2W6R8MPD is the manufacturer-recommended active substitute.

Q: What is the difference between the Rubycon BXC and LLE series substitutes?

A: Both 450BXC6.8MEFC10X20 and 450LLE6R8MEFC10X20 meet all core electrical and mechanical requirements. The LLE series provides extended lifetime (20,000 hours at 105°C) compared to BXC (10,000 hours). Height differs slightly: BXC is 22.00 mm, LLE is 22.00 mm. Selection depends on application lifetime requirements.

Q: Are there height variations among substitute parts?

A: Yes. The original UCA2W6R8MPD has a maximum seated height of 21.50 mm. Substitute parts vary: UCA2W6R8MPD1TD and UCS2W6R8MPD maintain 21.50 mm; Rubycon and EPCOS parts are 22.00 mm; Chemi-Con EKXG451ELL6R8MJ20S is 20.00 mm. Verify PCB clearance before selection.

Q: Do all substitute parts maintain ROHS3 compliance?

A: Yes. All listed substitute parts are ROHS3 compliant, matching the original UCA2W6R8MPD specification.

Q: Which substitute offers the best availability?

A: EKXG451ELL6R8MJ20S (Chemi-Con) has the highest inventory at 17,900 units. B43890A5685M000 (EPCOS-TDK Electronics) has 4,422 units. All other substitutes maintain inventory above 1,000 units.

Q: Can I use a substitute with lower lifetime rating in my application?

A: Substitution is determined by matching the core electrical parameters (capacitance, voltage, tolerance, polarization) and mechanical fit (lead spacing, diameter, mounting type). Lifetime rating selection depends on application requirements. Lower lifetime ratings are acceptable if application duty cycle permits.

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