Equivalent & Substitute Parts for UCS2V6R8MPD

Part Overview

The Nichicon UCS2V6R8MPD is a 6.8 µF, 350 V aluminum electrolytic capacitor in radial, can package with a rated lifetime of 10,000 hours at 105°C. This component is classified as Active product status and is suitable for general-purpose applications requiring through-hole mounting.

Substitute parts are necessary when design requirements demand higher voltage ratings, extended operational lifetime, improved reliability margins, or when the primary part becomes unavailable. The substitute parts listed maintain identical capacitance and tolerance specifications while offering enhanced electrical performance characteristics.

Key Parameters

Parameter	Value
Capacitance	6.8 µF
Tolerance	±20%
Voltage - Rated	350 V
Lifetime @ Temperature	10,000 Hrs @ 105°C
Operating Temperature Range	-40°C ~ 105°C
Lead Spacing	0.197" (5.00 mm)
Size / Dimension	0.394" Dia (10.00 mm)
Height - Seated (Max)	0.689" (17.50 mm)
Mounting Type	Through Hole
Package / Case	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the UCS2V6R8MPD is determined by the following criteria:

Mandatory Matching Parameters:

Capacitance: 6.8 µF
Tolerance: ±20%
Lead Spacing: 0.197" (5.00 mm)
Size / Dimension: 0.394" Dia (10.00 mm)
Mounting Type: Through Hole
Package / Case: Radial, Can
Operating Temperature Range: -40°C ~ 105°C

Allowable Variation Parameters:

Voltage - Rated: Equal to or greater than 350 V
Lifetime @ Temperature: Equal to or greater than 10,000 Hrs @ 105°C
Height - Seated (Max): Up to 0.709" (18.00 mm) for extended-life variants
Ripple Current: May vary based on series design
RoHS Status: ROHS3 Compliant or equivalent

All substitute parts meet or exceed the electrical and mechanical specifications of the primary part while maintaining physical compatibility with standard PCB layouts designed for the UCS2V6R8MPD footprint.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage - Rated	Lifetime @ 105°C	Height (Max)	Product Status	RoHS Status
UCS2V6R8MPD	Nichicon	UCS	6.8 µF	350 V	10,000 Hrs	0.689" (17.50 mm)	Active	ROHS3 Compliant
UCS2G6R8MPD	Nichicon	UCS	6.8 µF	400 V	8,000 Hrs	0.689" (17.50 mm)	Active	ROHS3 Compliant
UCY2G6R8MPD	Nichicon	UCY	6.8 µF	400 V	12,000 Hrs	0.689" (17.50 mm)	Active	ROHS3 Compliant
ULD2G6R8MPD	Nichicon	ULD	6.8 µF	400 V	20,000 Hrs	0.709" (18.00 mm)	Not For New Designs	ROHS3 Compliant
400LLE6R8MEFC10X16	Rubycon	LLE	6.8 µF	400 V	20,000 Hrs	0.709" (18.00 mm)	Active	ROHS3 Compliant

Engineering Selection Recommendations

UCS2G6R8MPD (Nichicon UCS Series, 400 V): Direct upgrade within the same manufacturer's active product line. Provides 50 V additional voltage margin while maintaining identical physical dimensions. Suitable for designs requiring enhanced voltage headroom with active product status support.

UCY2G6R8MPD (Nichicon UCY Series, 400 V, 12,000 Hrs): Mid-tier upgrade offering 20% extended lifetime (12,000 hours versus 10,000 hours) with 400 V rating. Maintains active product status and identical form factor. Recommended for applications requiring improved reliability without significant height constraints.

ULD2G6R8MPD (Nichicon ULD Series, 400 V, 20,000 Hrs): Extended-life variant with double the rated lifetime (20,000 hours). Classified as "Not For New Designs," limiting applicability to legacy system maintenance or replacement scenarios. Height increases to 0.709" (18.00 mm), requiring PCB layout verification.

400LLE6R8MEFC10X16 (Rubycon LLE Series, 400 V, 20,000 Hrs): Cross-manufacturer substitute from Rubycon with identical electrical specifications to ULD2G6R8MPD. Active product status with ROHS3 compliance. Highest inventory availability (39,304 units). Suitable for new designs requiring maximum lifetime and voltage rating with confirmed mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can UCS2G6R8MPD replace UCS2V6R8MPD in existing designs? A: Yes. UCS2G6R8MPD maintains identical physical dimensions (0.394" diameter, 0.689" height, 5.00 mm lead spacing) and capacitance specifications. The 400 V rating provides additional voltage margin over the 350 V primary part. No PCB layout modifications are required.

Q: What is the height difference between standard and extended-life variants? A: Standard variants (UCS2V6R8MPD, UCS2G6R8MPD, UCY2G6R8MPD) have a maximum seated height of 0.689" (17.50 mm). Extended-life variants (ULD2G6R8MPD, 400LLE6R8MEFC10X16) have a maximum seated height of 0.709" (18.00 mm), a 0.020" (0.50 mm) increase. Verify clearance in designs with height-constrained layouts.

Q: Why is ULD2G6R8MPD marked "Not For New Designs"? A: This designation indicates the part is in legacy status. While electrically and mechanically compatible, Nichicon recommends using active alternatives (UCY2G6R8MPD or cross-manufacturer 400LLE6R8MEFC10X16) for new product development to ensure long-term supply chain stability.

Q: Are Nichicon and Rubycon parts interchangeable? A: Yes, for the specified electrical and mechanical parameters. The 400LLE6R8MEFC10X16 (Rubycon) and ULD2G6R8MPD (Nichicon) share identical capacitance, voltage, lifetime, dimensions, and lead spacing. Both are ROHS3 compliant. Confirm with your procurement and quality assurance processes before implementation.

Q: What determines if a part qualifies as a substitute? A: Substitutes must maintain 6.8 µF capacitance, ±20% tolerance, 5.00 mm lead spacing, 10.00 mm diameter, through-hole mounting, and -40°C to 105°C operating range. Voltage rating and lifetime may be equal to or exceed the primary part. Physical height may increase up to 0.709" (18.00 mm) for extended-life designs.

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