UHW1H271MPD Equivalent & Substitute Parts

Part Overview

The UHW1H271MPD is a 270 µF, 50 V aluminum electrolytic capacitor in radial configuration manufactured by Nichicon. This component is classified as Not For New Designs, indicating it has been superseded in Nichicon's product line. The part operates across a temperature range of -40°C to 105°C with a rated lifetime of 10,000 hours at 105°C, making it suitable for general-purpose applications requiring stable capacitance and ripple current handling.

Identifying equivalent and substitute parts is necessary due to the product's discontinued status for new designs. Alternative components from active product lines provide equivalent or enhanced electrical performance while maintaining compatibility with existing circuit requirements.

Key Parameters

Parameter	Value
Capacitance	270 µF
Voltage Rating	50 V
Tolerance	±20%
Lifetime @ Temperature	10,000 Hrs @ 105°C
Operating Temperature Range	-40°C ~ 105°C
Polarization	Polar
Lead Spacing	0.197" (5.00 mm)
Case Diameter	0.394" (10.00 mm)
Height (Seated Max)	0.866" (22.00 mm)
Mounting Type	Through Hole
Package Type	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts are categorized based on electrical and mechanical compatibility with the UHW1H271MPD:

Direct Equivalent (Same Voltage Rating - 50 V):

EKYB500ELL271MJ20S (Chemi-Con KYB series)
50ZLH270MEFC10X20 (Rubycon ZLH series)
EEU-FR1H271 (Panasonic FR-A series)

These parts maintain the 50 V voltage rating, 270 µF capacitance, ±20% tolerance, and identical mechanical dimensions (lead spacing, case diameter, height). All are through-hole radial cans with ROHS3 compliance and 10,000-hour lifetime ratings at 105°C.

Upgraded Voltage Rating (63 V):

63ZLH270MEFC10X20 (Rubycon ZLH series)
63ZLJ270M10X20 (Rubycon ZLJ series)
EEU-FR1J271U (Panasonic FR-A series)
EKZN630ELL271MJ20S (Chemi-Con KZN series)

These parts provide higher voltage ratings (63 V) while maintaining 270 µF capacitance, ±20% tolerance, and compatible mechanical dimensions. Higher voltage ratings provide design margin and are electrically backward-compatible in 50 V applications.

All substitute parts share identical lead spacing (5.00 mm), case diameter (10.00 mm), and mounting type (through-hole radial can), ensuring direct mechanical interchangeability on printed circuit boards.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Capacitance	Voltage Rating	Tolerance	Lifetime @ 105°C	Impedance	Ripple Current @ 120 Hz	Ripple Current @ 100 kHz	Product Status
UHW1H271MPD	Nichicon	UHW	270 µF	50 V	±20%	10,000 Hrs	30 mOhms	1.03 A	2.06 A	Not For New Designs
EKYB500ELL271MJ20S	Chemi-Con	KYB	270 µF	50 V	±20%	10,000 Hrs	55 mOhms	650 mA	1.3 A	Active
50ZLH270MEFC10X20	Rubycon	ZLH	270 µF	50 V	±20%	10,000 Hrs	30 mOhms	790 mA	1.58 A	Active
EEU-FR1H271	Panasonic Electronic Components	FR-A	270 µF	50 V	±20%	10,000 Hrs	23 mOhms	1.323 A	1.89 A	Active
63ZLH270MEFC10X20	Rubycon	ZLH	270 µF	63 V	±20%	10,000 Hrs	78 mOhms	600 mA	—	Active
63ZLJ270M10X20	Rubycon	ZLJ	270 µF	63 V	±20%	10,000 Hrs	56 mOhms	785 mA	1.57 A	Active
EEU-FR1J271U	Panasonic Electronic Components	FR-A	270 µF	63 V	±20%	10,000 Hrs	35 mOhms	860.3 mA	1.229 A	Active
EKZN630ELL271MJ20S	Chemi-Con	KZN	270 µF	63 V	±20%	10,000 Hrs	45 mOhms	785 mA	1.57 A	Active

Engineering Selection Recommendations

For Direct Replacement (50 V Applications):

Select from EKYB500ELL271MJ20S, 50ZLH270MEFC10X20, or EEU-FR1H271 when the circuit operates at 50 V and existing designs require no modification. All three maintain the original voltage specification and are from active product lines with ROHS3 compliance. The EEU-FR1H271 offers the lowest impedance (23 mOhms) and highest ripple current capacity at 120 Hz (1.323 A), providing performance enhancement over the original UHW1H271MPD.

For Upgraded Designs (63 V Applications):

Select from 63ZLH270MEFC10X20, 63ZLJ270M10X20, EEU-FR1J271U, or EKZN630ELL271MJ20S when circuit design permits higher voltage ratings. The 63 V rating provides additional design margin and is electrically backward-compatible in 50 V applications. All four parts are from active product lines with ROHS3 compliance and 10,000-hour lifetime ratings at 105°C.

All substitute parts maintain identical mechanical dimensions and through-hole mounting compatibility, ensuring direct PCB interchangeability without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can I use a 63 V rated capacitor in a 50 V circuit?

A: Yes. A higher voltage-rated capacitor is electrically backward-compatible in lower voltage applications. The 63 V parts (63ZLH270MEFC10X20, 63ZLJ270M10X20, EEU-FR1J271U, EKZN630ELL271MJ20S) function correctly in 50 V circuits and provide additional design margin.

Q: What is the difference between direct equivalents and upgraded parts?

A: Direct equivalents (EKYB500ELL271MJ20S, 50ZLH270MEFC10X20, EEU-FR1H271) maintain the 50 V rating and are pin-for-pin replacements. Upgraded parts feature 63 V ratings and are electrically compatible but provide higher voltage headroom.

Q: Are all substitute parts mechanically interchangeable?

A: Yes. All substitute parts share identical lead spacing (5.00 mm), case diameter (10.00 mm), height (22.00 mm or 21.50 mm), and through-hole radial can packaging. They mount directly on existing PCB footprints without modification.

Q: What does "Not For New Designs" mean for the UHW1H271MPD?

A: This status indicates Nichicon has discontinued the part for new applications. Existing inventory may be available, but new designs should specify active alternatives from the substitute list.

Q: Do all parts meet the same compliance standards?

A: Yes. All substitute parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes, matching the original UHW1H271MPD compliance profile.

Q: How do impedance differences affect circuit performance?

A: Lower impedance values (EEU-FR1H271 at 23 mOhms, 50ZLH270MEFC10X20 at 30 mOhms) provide better high-frequency ripple current handling and reduced voltage ripple. Higher impedance values (EKZN630ELL271MJ20S at 45 mOhms, 63ZLH270MEFC10X20 at 78 mOhms) are acceptable for general-purpose applications but may exhibit slightly higher ripple voltage.

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