PLF1A271MDO1 Equivalent & Substitute Parts

Part Overview

The PLF1A271MDO1 is a 270 µF, 10 V aluminum polymer capacitor manufactured by Nichicon in radial, can package configuration for through-hole mounting. This component is classified as Active product status and is designed for general purpose applications requiring stable capacitance and low equivalent series resistance characteristics. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and reliability ratings align with the original component's performance envelope, enabling direct replacement in circuit designs without functional compromise.

Key Parameters

Parameter	Value
Capacitance	270 µF
Voltage Rating	10 V
Type	Aluminum Polymer
Tolerance	±20%
ESR (Equivalent Series Resistance)	8 mOhm
Lifetime	2000 Hrs @ 105°C
Operating Temperature Range	-55°C to 105°C
Ripple Current @ 100 kHz	4.9 A
Package Type	Radial, Can
Mounting Type	Through Hole
Lead Spacing	0.138" (4.60 mm)
Diameter	0.315" (8.00 mm)
Height (Seated Max)	0.472" (12.00 mm)

Substitute Part Grouping Explanation

Substitute parts for the PLF1A271MDO1 are qualified based on strict equivalence across the following critical parameters:

Electrical Equivalence: Capacitance value (270 µF), voltage rating (10 V), and tolerance (±20%) must match exactly
Reliability Equivalence: Lifetime rating (2000 Hrs @ 105°C) and operating temperature range (-55°C to 105°C) must be identical
Mechanical Compatibility: Package type (Radial, Can), mounting type (Through Hole), lead spacing (0.138" / 4.60 mm), and diameter (0.315" / 8.00 mm) must be identical
Performance Tolerance: ESR and ripple current values may vary within acceptable operational margins for the application category

The identified substitute parts APS-100ELL271MHB5S and APSA100ELL271MHB5S meet all equivalence criteria and are direct functional replacements.

Parameter Comparison

Parameter	PLF1A271MDO1 (Nichicon)	APS-100ELL271MHB5S (Chemi-Con)	APSA100ELL271MHB5S (Chemi-Con)
Capacitance	270 µF	270 µF	270 µF
Voltage Rating	10 V	10 V	10 V
Tolerance	±20%	±20%	±20%
Type	Aluminum Polymer	Aluminum Polymer	Aluminum Polymer
ESR	8 mOhm	14 mOhm	9 mOhm
Lifetime @ 105°C	2000 Hrs	2000 Hrs	2000 Hrs
Operating Temperature	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C
Ripple Current @ 100 kHz	4.9 A	4.42 A	4.71 A
Lead Spacing	0.138" (4.60 mm)	0.138" (4.60 mm)	0.138" (4.60 mm)
Diameter	0.315" (8.00 mm)	0.315" (8.00 mm)	0.315" (8.00 mm)
Height (Seated Max)	0.472" (12.00 mm)	0.512" (13.00 mm)	0.512" (13.00 mm)
Package Type	Radial, Can	Radial, Can	Radial, Can
Mounting Type	Through Hole	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

All three parts maintain Active product status and meet regulatory compliance requirements (RoHS and REACH). Selection between the main part and substitutes is determined by availability and application-specific ESR tolerance:

PLF1A271MDO1: Lowest ESR at 8 mOhm, optimal for applications requiring minimal impedance and maximum ripple current handling (4.9 A @ 100 kHz)
APSA100ELL271MHB5S: ESR of 9 mOhm provides performance closely aligned to the original specification with ripple current of 4.71 A @ 100 kHz
APS-100ELL271MHB5S: ESR of 14 mOhm with reduced ripple current capacity (4.42 A @ 100 kHz); suitable for applications with lower ripple current demands

Height variation (0.472" original vs. 0.512" substitutes) must be evaluated for PCB layout clearance in space-constrained designs.

Frequently Asked Questions (FAQ)

Q: Can APS-100ELL271MHB5S and APSA100ELL271MHB5S be used interchangeably with PLF1A271MDO1?

A: Both Chemi-Con parts are direct functional substitutes. They share identical capacitance, voltage rating, tolerance, lifetime rating, operating temperature range, lead spacing, and diameter. Differences in ESR and ripple current are within acceptable operational margins for general purpose applications. Height difference (0.512" vs. 0.472") requires PCB layout verification.

Q: What is the significance of ESR differences between these parts?

A: ESR affects impedance characteristics and heat dissipation under ripple current conditions. The original PLF1A271MDO1 at 8 mOhm provides the lowest impedance. APSA100ELL271MHB5S at 9 mOhm is nearly equivalent. APS-100ELL271MHB5S at 14 mOhm is acceptable for applications with lower ripple current requirements but may generate additional heat in high-frequency switching environments.

Q: Are there mechanical compatibility concerns?

A: Lead spacing (0.138" / 4.60 mm) and diameter (0.315" / 8.00 mm) are identical across all three parts, ensuring PCB footprint compatibility. The substitute parts are 0.040" (0.40 mm) taller when seated. Verify clearance above the capacitor location on the PCB before substitution.

Q: Do all parts meet the same regulatory standards?

A: All three parts are RoHS compliant and REACH unaffected. The original PLF1A271MDO1 and APSA100ELL271MHB5S carry ROHS3 certification, while APS-100ELL271MHB5S carries standard RoHS compliance. Both certifications are acceptable for most applications.

Q: Which substitute part should be selected for optimal performance?

A: APSA100ELL271MHB5S is the preferred substitute, offering ESR of 9 mOhm (closest to the original 8 mOhm) and ripple current of 4.71 A @ 100 kHz (closest to the original 4.9 A). It maintains ROHS3 compliance matching the original specification.

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