UHE1V122MHT Equivalent & Substitute Parts

Part Overview

The UHE1V122MHT is a 1200 µF, 35 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is classified as obsolete, making direct sourcing increasingly difficult. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production, repair, and field replacement applications.

Key Parameters

Parameter	Value
Capacitance	1200 µF
Voltage Rating	35 V
Tolerance	±20%
Lifetime @ Temperature	10000 Hrs @ 105°C
Operating Temperature Range	-40°C ~ 105°C
Polarization	Polar
Lead Spacing	0.197" (5.00 mm)
Package Type	Radial, Can
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following parameters:

Capacitance: 1200 µF (exact match required)
Voltage Rating: 35 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Mounting Type: Through Hole (exact match required)
Package Type: Radial, Can (exact match required)
Operating Temperature Range: -40°C ~ 105°C (exact match required)
Lifetime @ 105°C: 10000 Hrs minimum (equal or greater acceptable)

Substitutes are grouped into three categories:

Direct Manufacturer Equivalents: Parts from Nichicon with identical electrical specifications and mechanical dimensions.

Similar Manufacturer Parts: Parts from alternative manufacturers (Panasonic, Chemi-Con) meeting all core electrical parameters with minor dimensional variations in lead spacing and height.

Parametric Equivalents: Parts meeting all electrical specifications with acceptable dimensional tolerance for through-hole mounting applications.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Lead Spacing	Size (Dia)	Height (Max)	Impedance	Product Status	RoHS Status
UHE1V122MHT	Nichicon	1200 µF	35 V	±20%	10000 Hrs	0.197" (5.00 mm)	0.492" (12.50 mm)	1.240" (31.50 mm)	24 mOhms	Obsolete	Non-compliant
UHE1V122MHD	Nichicon	1200 µF	35 V	±20%	10000 Hrs	0.197" (5.00 mm)	0.492" (12.50 mm)	1.240" (31.50 mm)	24 mOhms	Not For New Designs	ROHS3 Compliant
UHE1V122MHD6	Nichicon	1200 µF	35 V	±20%	10000 Hrs	0.295" (7.50 mm)	0.630" (16.00 mm)	0.787" (20.00 mm)	27 mOhms	Not For New Designs	ROHS3 Compliant
EEU-FR1V122	Panasonic	1200 µF	35 V	±20%	10000 Hrs	0.197" (5.00 mm)	0.492" (12.50 mm)	1.063" (27.00 mm)	15 mOhms	Active	ROHS3 Compliant
EEU-FM1V122L	Panasonic	1200 µF	35 V	±20%	7000 Hrs	0.197" (5.00 mm)	0.492" (12.50 mm)	1.260" (32.00 mm)	13 mOhms	Active	ROHS3 Compliant
EEU-FM1V122S	Panasonic	1200 µF	35 V	±20%	5000 Hrs	0.295" (7.50 mm)	0.630" (16.00 mm)	0.866" (22.00 mm)	17 mOhms	Active	ROHS3 Compliant
EEU-FM1V122SB	Panasonic	1200 µF	35 V	±20%	5000 Hrs	0.295" (7.50 mm)	0.630" (16.00 mm)	0.866" (22.00 mm)	17 mOhms	Active	ROHS3 Compliant
EKY-350ELL122MK30S	Chemi-Con	1200 µF	35 V	±20%	10000 Hrs	0.197" (5.00 mm)	0.492" (12.50 mm)	1.240" (31.50 mm)	24 mOhms	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Footprint)

UHE1V122MHD is the primary direct equivalent from Nichicon. It maintains identical electrical specifications and mechanical dimensions to the UHE1V122MHT while offering ROHS3 compliance. Product status is "Not For New Designs," indicating limited future availability.

EKY-350ELL122MK30S from Chemi-Con provides an active-status alternative with matching electrical and mechanical specifications, ROHS3 compliance, and 10000 Hrs lifetime rating. This part is suitable for both replacement and new design applications.

For Footprint-Compatible Substitution (5.00 mm Lead Spacing)

EEU-FR1V122 from Panasonic is an active-status part with 10000 Hrs lifetime, matching the original part's reliability specification. Lead spacing and diameter are identical; height is slightly reduced (1.063" vs. 1.240"). ROHS3 compliant.

EEU-FM1V122L from Panasonic maintains identical lead spacing and diameter with 7000 Hrs lifetime. Height is slightly increased (1.260" vs. 1.240"). ROHS3 compliant and active status.

For Alternative Footprint (7.50 mm Lead Spacing)

UHE1V122MHD6 from Nichicon and EEU-FM1V122S/EEU-FM1V122SB from Panasonic feature wider lead spacing (7.50 mm) and larger diameter (0.630" vs. 0.492"). These parts are suitable only if PCB layout accommodates the increased pitch. Lifetime ratings vary: UHE1V122MHD6 maintains 10000 Hrs; Panasonic variants provide 5000 Hrs.

Compliance Considerations

All substitute parts listed are ROHS3 compliant. The original UHE1V122MHT is RoHS non-compliant. Selection of ROHS3-compliant substitutes ensures regulatory compliance for new production and field replacement in regulated markets.

Frequently Asked Questions (FAQ)

Q: Can UHE1V122MHD be used as a direct replacement for UHE1V122MHT?

A: Yes. UHE1V122MHD is electrically and mechanically identical to UHE1V122MHT, with matching capacitance (1200 µF), voltage (35 V), tolerance (±20%), lifetime (10000 Hrs @ 105°C), lead spacing (5.00 mm), and package dimensions. The primary difference is product status and RoHS compliance.

Q: What is the difference between EEU-FM1V122S and EEU-FM1V122SB?

A: Both parts are electrically identical with 1200 µF capacitance, 35 V rating, and 5000 Hrs lifetime. The difference is packaging: EEU-FM1V122S is supplied in bulk; EEU-FM1V122SB is supplied in cut tape (CT). Electrical performance and mechanical dimensions are identical.

Q: Why do some substitutes have different lead spacing?

A: Lead spacing (pitch) is determined by the manufacturer's design. Parts with 0.295" (7.50 mm) lead spacing require PCB layouts designed for wider pitch. Parts with 0.197" (5.00 mm) lead spacing are compatible with the original UHE1V122MHT footprint. Verify PCB hole spacing before selecting a substitute with different lead spacing.

Q: Does reduced lifetime affect compatibility?

A: Lifetime rating indicates expected operational hours at maximum rated temperature (105°C). EEU-FM1V122S and EEU-FM1V122SB provide 5000 Hrs versus the original 10000 Hrs. Selection depends on application duty cycle and expected service life. For applications requiring 10000 Hrs minimum, select EEU-FR1V122, UHE1V122MHD, or EKY-350ELL122MK30S.

Q: Are all listed substitutes RoHS compliant?

A: Yes. All substitute parts listed are ROHS3 compliant. The original UHE1V122MHT is RoHS non-compliant. Substitution with any listed part ensures compliance with RoHS regulations.

Q: Which substitute offers the best availability?

A: EEU-FM1V122S from Panasonic shows the highest inventory (19,285 Pcs) and active product status, making it the most readily available option. EKY-350ELL122MK30S from Chemi-Con is also active status with 1,084 Pcs in stock.

Q: Can I use a substitute with lower impedance?

A: Lower impedance (measured in mOhms) indicates better high-frequency performance and lower ESR. Substitutes with lower impedance (EEU-FR1V122 at 15 mOhms, EEU-FM1V122L at 13 mOhms) are electrically superior and fully compatible. Impedance is not a limiting factor for substitution.

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