UUT1H3R3MCL1GS Equivalent & Substitute Parts

Part Overview

The UUT1H3R3MCL1GS is a 3.3 µF 50 V aluminum electrolytic capacitor in surface mount radial can package manufactured by Nichicon. This part operates across -55°C to 105°C with a rated lifetime of 2000 hours at 105°C and is classified as obsolete. Due to its obsolete status, equivalent and substitute parts from active product lines are necessary for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Capacitance	3.3 µF
Tolerance	±20%
Voltage Rating	50 V
Lifetime @ 105°C	2000 Hrs
Operating Temperature Range	-55°C ~ 105°C
Package Type	Radial, Can - SMD
Mounting Type	Surface Mount
Physical Dimensions	0.157" Dia (4.00mm), Height 0.240" (6.10mm)
Land Size	0.169" L x 0.169" W (4.30mm x 4.30mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters: capacitance (3.3 µF), tolerance (±20%), voltage rating (50 V), package type (Radial, Can - SMD), mounting type (Surface Mount), physical dimensions (0.157" diameter, 4.30mm x 4.30mm land size), operating temperature range (-55°C ~ 105°C), and RoHS3 compliance.

Substitute parts are grouped into three categories:

Direct Equivalents (Active Status): Parts meeting all electrical and mechanical parameters with identical or superior lifetime ratings and general-purpose applications.

Upgraded Alternatives (Automotive Grade): Parts with AEC-Q200 certification and automotive application designation, offering enhanced reliability for demanding environments.

Similar Alternatives: Parts with comparable electrical performance but variations in lifetime or ripple current specifications that remain functionally compatible within the defined parameter envelope.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Lifetime @ 105°C	Height (Max)	Ripple Current @ 10 kHz	Status	Packaging
UUT1H3R3MCL1GS	Nichicon	UUT	3.3 µF	50 V	2000 Hrs	0.240" (6.10mm)	21 mA	Obsolete	Cut Tape (CT)
UUA1H3R3MCL1GS	Nichicon	UUA	3.3 µF	50 V	3000 Hrs	0.228" (5.80mm)	25.5 mA	Active	Tape & Reel (TR)
UWT1H3R3MCL1GB	Nichicon	UWT	3.3 µF	50 V	1000 Hrs	0.213" (5.40mm)	21 mA	Active	Tape & Reel (TR)
UWZ1H3R3MCL1GB	Nichicon	UWZ	3.3 µF	50 V	1000 Hrs	0.213" (5.40mm)	21 mA	Active	Tape & Reel (TR)
UCD1H3R3MCL1GS	Nichicon	UCD	3.3 µF	50 V	2000 Hrs	0.240" (6.10mm)	60 mA	Active	Tape & Reel (TR)
UUD1H3R3MCL1GS	Nichicon	UUD	3.3 µF	50 V	2000 Hrs	0.240" (6.10mm)	30 mA	Active	Tape & Reel (TR)
UWD1H3R3MCL1GS	Nichicon	UWD	3.3 µF	50 V	2000 Hrs	0.228" (5.80mm)	30 mA	Active	Tape & Reel (TR)
UWG1H3R3MCL1GB	Nichicon	UWG	3.3 µF	50 V	1000 Hrs	0.213" (5.40mm)	30 mA	Active	Tape & Reel (TR)
865060640003	Würth Elektronik	WCAP-ASLL	3.3 µF	50 V	2000 Hrs	0.217" (5.50mm)	60 mA	Active	Tape & Reel (TR)
865080640003	Würth Elektronik	WCAP-ASLI	3.3 µF	50 V	2000 Hrs	0.217" (5.50mm)	55 mA	Active	Tape & Reel (TR)
EXV335M050A9BAA	KEMET	EXV	3.3 µF	50 V	3000 Hrs	0.222" (5.65mm)	60 mA	Active	Tape & Reel (TR)

Engineering Selection Recommendations

For Direct Replacement (Nichicon UUA1H3R3MCL1GS): This part maintains identical electrical specifications with improved lifetime (3000 hours vs. 2000 hours at 105°C) and is in active production status. It is the primary recommendation for applications requiring Nichicon sourcing continuity. Packaging transitions from Cut Tape to Tape & Reel format.

For Automotive Applications (Nichicon UCD1H3R3MCL1GS or UUD1H3R3MCL1GS): Both parts carry AEC-Q200 certification and are designated for automotive use. UCD1H3R3MCL1GS provides higher ripple current capability (60 mA @ 100 kHz) with 2.7 Ohms impedance. UUD1H3R3MCL1GS offers moderate ripple current (30 mA @ 100 kHz) with 5 Ohms impedance. Selection depends on ripple current requirements of the target application.

For Extended Lifetime (KEMET EXV335M050A9BAA): This part offers 3000-hour lifetime at 105°C with high ripple current capacity (60 mA @ 100 kHz) and is suitable for applications requiring extended operational life. ROHS3 compliance is maintained.

For Cost-Optimized Solutions (Würth Elektronik 865060640003 or 865080640003): Both parts provide 2000-hour lifetime with high ripple current ratings and are available in active production. 865060640003 offers superior ripple current performance (60 mA @ 100 kHz) with lower impedance (2.9 Ohms).

For Reduced Lifetime Applications (Nichicon UWT1H3R3MCL1GB, UWZ1H3R3MCL1GB, or UWG1H3R3MCL1GB): These parts are rated for 1000 hours at 105°C and are suitable for non-critical applications where extended lifetime is not required. UWZ1H3R3MCL1GB is designated for high-temperature reflow processes.

All substitute parts maintain ROHS3 compliance and identical capacitance, tolerance, voltage rating, and physical land size compatibility with the original UUT1H3R3MCL1GS.

Frequently Asked Questions (FAQ)

Q: Can UUA1H3R3MCL1GS directly replace UUT1H3R3MCL1GS in existing designs?

A: Yes. Both parts share identical electrical specifications (3.3 µF, ±20%, 50 V) and physical dimensions (0.157" diameter, 4.30mm x 4.30mm land size). The primary difference is packaging format (Cut Tape vs. Tape & Reel) and improved lifetime rating (3000 vs. 2000 hours at 105°C). PCB layout compatibility is maintained.

Q: What is the difference between Nichicon automotive-grade parts (UCD1H3R3MCL1GS and UUD1H3R3MCL1GS)?

A: Both carry AEC-Q200 certification for automotive applications. UCD1H3R3MCL1GS provides higher ripple current capacity (60 mA @ 100 kHz) with lower impedance (2.7 Ohms), suitable for high-current ripple environments. UUD1H3R3MCL1GS offers moderate ripple current (30 mA @ 100 kHz) with 5 Ohms impedance. Selection depends on circuit ripple current requirements.

Q: Are Würth Elektronik parts (865060640003, 865080640003) compatible with Nichicon designs?

A: Yes. Both Würth parts maintain identical capacitance, voltage rating, tolerance, and land size specifications. They are cross-compatible at the PCB level. Würth parts offer higher ripple current ratings (55-60 mA @ 100 kHz) compared to the original UUT series (21 mA @ 10 kHz).

Q: What is the impact of height variation among substitute parts?

A: Height variations range from 0.213" to 0.240" (5.40mm to 6.10mm). All parts fit within standard SMD assembly clearances. Verify clearance in designs with height-constrained layouts. UUA1H3R3MCL1GS, UWD1H3R3MCL1GS, and EXV335M050A9BAA offer reduced height (0.228", 0.228", and 0.222" respectively) compared to the original (0.240").

Q: Which substitute part offers the longest operational lifetime?

A: Both UUA1H3R3MCL1GS and EXV335M050A9BAA are rated for 3000 hours at 105°C, compared to 2000 hours for the original UUT1H3R3MCL1GS. These parts are recommended for applications requiring extended service life.

Q: Can parts with 1000-hour lifetime (UWT1H3R3MCL1GB, UWZ1H3R3MCL1GB, UWG1H3R3MCL1GB) be used as substitutes?

A: These parts are electrically and mechanically compatible but have reduced lifetime ratings (1000 vs. 2000 hours at 105°C). They are suitable only for applications where extended lifetime is not a design requirement. Verify thermal operating conditions before selection.

Q: What packaging format should be specified for new procurement?

A: The original UUT1H3R3MCL1GS uses Cut Tape (CT) packaging. All active substitute parts are supplied in Tape & Reel (TR) format, which is standard for high-volume SMD assembly. Confirm reel specifications with your assembly partner.

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