UHC1C331MPD Equivalent & Substitute Parts

Part Overview

The UHC1C331MPD is a 330 µF, 16 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is rated for 2000 hours at 105°C and is designed for high-temperature reflow applications. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance requirements.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	16 V
Tolerance	±20%
Package Type	Radial, Can
Lead Spacing	0.197" (5.00 mm)
Diameter	0.394" (10.00 mm)
Height (Max)	0.551" (14.00 mm)
Mounting Type	Through Hole
Operating Temperature Range	-40°C to 105°C
Polarization	Polar

Substitute Part Grouping Explanation

Substitution for the UHC1C331MPD is determined by the following criteria:

Primary Compatibility Requirements:

Capacitance: 330 µF (exact match required)
Voltage Rating: 16 V minimum (equal or higher voltage acceptable)
Package: Radial, Can with 0.197" (5.00 mm) lead spacing
Mounting: Through Hole
Polarization: Polar

Substitution Categories:

Upgrade Parts (Enhanced Performance): Parts with improved lifetime ratings, extended temperature ranges, or higher voltage ratings while maintaining identical physical footprint and lead spacing.

Similar Parts (Dimensional Variation): Parts with different physical dimensions (smaller diameter and height) but matching electrical specifications. These require PCB layout verification due to altered footprint.

Substitute parts are grouped based on whether they maintain the original form factor or introduce dimensional changes that may affect board-level compatibility.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Lifetime @ Temp	Operating Temp Range	Lead Spacing	Diameter	Height (Max)	Product Status	RoHS Status
UHC1C331MPD	Nichicon	330 µF	16 V	2000 Hrs @ 105°C	-40°C ~ 105°C	0.197" (5.00 mm)	0.394" (10.00 mm)	0.551" (14.00 mm)	Obsolete	REACH Unaffected
UBT1C331MPD8	Nichicon	330 µF	16 V	5000 Hrs @ 125°C	-40°C ~ 125°C	0.197" (5.00 mm)	0.394" (10.00 mm)	0.571" (14.50 mm)	Active	ROHS3 Compliant
UBW1C331MPD	Nichicon	330 µF	16 V	2000 Hrs @ 135°C	-55°C ~ 135°C	0.197" (5.00 mm)	0.394" (10.00 mm)	0.571" (14.50 mm)	Active	ROHS3 Compliant
UHV1V331MPD	Nichicon	330 µF	35 V	6000 Hrs @ 105°C	-40°C ~ 105°C	0.197" (5.00 mm)	0.394" (10.00 mm)	0.551" (14.00 mm)	Not For New Designs	ROHS3 Compliant
UKA1V331MPD	Nichicon	330 µF	35 V	2000 Hrs @ 105°C	-55°C ~ 105°C	0.197" (5.00 mm)	0.394" (10.00 mm)	0.551" (14.00 mm)	Not For New Designs	ROHS3 Compliant
UPJ1C331MPD6	Nichicon	330 µF	16 V	5000 Hrs @ 105°C	-55°C ~ 105°C	0.197" (5.00 mm)	0.394" (10.00 mm)	0.551" (14.00 mm)	Not For New Designs	ROHS3 Compliant
UPM1C331MPD6	Nichicon	330 µF	16 V	5000 Hrs @ 105°C	-55°C ~ 105°C	0.197" (5.00 mm)	0.394" (10.00 mm)	0.571" (14.50 mm)	Not For New Designs	ROHS3 Compliant
UPS1E331MPD	Nichicon	330 µF	25 V	2000 Hrs @ 105°C	-55°C ~ 105°C	0.197" (5.00 mm)	0.394" (10.00 mm)	0.551" (14.00 mm)	Not For New Designs	ROHS3 Compliant
UHD1C331MPD	Nichicon	330 µF	16 V	3000 Hrs @ 105°C	-40°C ~ 105°C	0.138" (4.60 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)	Not For New Designs	ROHS3 Compliant
UHE1C331MPD	Nichicon	330 µF	16 V	7000 Hrs @ 105°C	-40°C ~ 105°C	0.138" (4.60 mm)	0.315" (8.00 mm)	0.453" (11.50 mm)	Not For New Designs	ROHS3 Compliant
UHV1C331MPD	Nichicon	330 µF	16 V	6000 Hrs @ 105°C	-40°C ~ 105°C	0.138" (4.60 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)	Not For New Designs	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Form Factor Replacement (Identical Footprint):

UBT1C331MPD8 and UBW1C331MPD are the primary upgrade options. Both maintain the 0.197" (5.00 mm) lead spacing and 0.394" (10.00 mm) diameter. UBT1C331MPD8 is active and ROHS3 compliant with extended lifetime at elevated temperature. UBW1C331MPD extends the operating temperature range to -55°C ~ 135°C and is also active and ROHS3 compliant. Height increases from 0.551" to 0.571" require clearance verification.

UPJ1C331MPD6 maintains identical physical dimensions to the original part and is ROHS3 compliant. UPS1E331MPD provides a 25 V rated option with identical footprint, suitable for applications requiring higher voltage margin.

For Higher Voltage Applications:

UHV1V331MPD and UKA1V331MPD both provide 35 V ratings with identical lead spacing and diameter. UHV1V331MPD offers 6000 hours lifetime at 105°C. Both maintain the original 0.551" (14.00 mm) height.

For Compact Form Factor (Reduced Footprint):

UHD1C331MPD, UHE1C331MPD, and UHV1C331MPD feature smaller dimensions with 0.138" (4.60 mm) lead spacing and 0.315" (8.00 mm) diameter. These require PCB layout redesign and are not direct drop-in replacements. UHE1C331MPD offers the highest lifetime rating at 7000 hours at 105°C.

Compliance Considerations:

All substitute parts except UHV1V331MPD and UKA1V331MPD are active products. UBT1C331MPD8 and UBW1C331MPD are recommended for new designs due to active status and ROHS3 compliance. Parts marked "Not For New Designs" are suitable for legacy system maintenance only.

Frequently Asked Questions (FAQ)

Q: Can UBT1C331MPD8 be used as a direct replacement for UHC1C331MPD?

A: UBT1C331MPD8 maintains the same lead spacing (0.197" / 5.00 mm) and diameter (0.394" / 10.00 mm), making it mechanically compatible. Height increases from 0.551" to 0.571", requiring clearance verification on the PCB. Electrically, it provides superior performance with 5000 hours lifetime at 125°C versus 2000 hours at 105°C for the original part.

Q: What is the difference between upgrade parts and similar parts?

A: Upgrade parts maintain identical lead spacing and diameter, requiring no PCB layout changes. Similar parts feature different physical dimensions, particularly smaller diameter and lead spacing, necessitating PCB redesign. Similar parts are not direct drop-in replacements.

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

A: Yes. Higher voltage ratings are electrically compatible in circuits designed for lower voltages. UHV1V331MPD and UKA1V331MPD both provide 35 V ratings with identical lead spacing and diameter to the original part. This provides additional voltage margin for circuit protection.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts are ROHS3 compliant. The original UHC1C331MPD is REACH Unaffected. Substitute parts marked as REACH Affected comply with REACH regulations. For applications requiring specific compliance certifications, verify against your procurement requirements.

Q: Which substitute part has the longest operational lifetime?

A: UHE1C331MPD offers 7000 hours at 105°C, the highest among all listed parts. However, it features a smaller form factor (0.315" diameter, 0.138" lead spacing) requiring PCB layout changes. For identical footprint replacement, UBT1C331MPD8 provides 5000 hours at 125°C.

Q: Can I use UHD1C331MPD, UHE1C331MPD, or UHV1C331MPD without PCB modifications?

A: No. These parts have different lead spacing (0.138" versus 0.197") and smaller diameter (0.315" versus 0.394"), requiring PCB layout redesign. They are not direct drop-in replacements and should only be considered for new board designs.

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