KY35VB271M8X20LL Equivalent & Substitute Parts

Part Overview

The KY35VB271M8X20LL is a 270 µF, 35 V aluminum electrolytic capacitor in radial, can package manufactured by Chemi-Con. This component is classified as obsolete, indicating it is no longer in active production. The part features a 7000-hour lifetime rating at 105°C and is designed for general-purpose applications requiring through-hole mounting with 3.50 mm lead spacing.

Due to its obsolete status, identifying functionally equivalent substitute parts is necessary for ongoing maintenance, repair, and redesign applications. Substitute parts must maintain electrical compatibility across capacitance, voltage rating, tolerance, and thermal performance parameters while accommodating potential physical dimension variations within acceptable assembly constraints.

Key Parameters

Parameter	Value	Unit	Substitution Relevance
Capacitance	270	µF	Critical - must match exactly
Voltage - Rated	35	V	Critical - must match or exceed
Tolerance	±20%	%	Critical - must match
Operating Temperature Range	-40°C ~ 105°C	°C	Critical - must match or exceed
Lifetime @ Temp.	7000	Hrs @ 105°C	Important - affects reliability
Lead Spacing	0.138" (3.50 mm)	inches (mm)	Critical - PCB layout compatibility
Size / Dimension	0.315" Dia (8.00 mm)	inches (mm)	Important - mechanical fit
Height - Seated (Max)	0.787" (20.00 mm)	inches (mm)	Important - clearance constraints
Mounting Type	Through Hole	-	Critical - assembly method
Package / Case	Radial, Can	-	Critical - form factor
Polarization	Polar	-	Critical - circuit orientation
Impedance	69	mOhms	Important - frequency response
Ripple Current @ 120 Hz	525	mA	Important - thermal performance
Ripple Current @ 100 kHz	1.05	A	Important - thermal performance

Substitute Part Grouping Explanation

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

Mandatory Matching Parameters:

Capacitance: 270 µF (exact match required)
Voltage Rating: 35 V (substitute must equal or exceed)
Tolerance: ±20% (exact match required)
Operating Temperature Range: -40°C ~ 105°C (substitute must equal or exceed)
Mounting Type: Through Hole (exact match required)
Package / Case: Radial, Can (exact match required)
Lead Spacing: 0.138" (3.50 mm) (exact match required)
Polarization: Polar (exact match required)

Compatible Variation Parameters:

Height - Seated (Max): Substitute height may vary within assembly clearance constraints; original specification is 0.787" (20.00 mm)
Lifetime @ Temp.: Substitute may equal or exceed 7000 hours @ 105°C
Impedance: Substitute impedance may vary; lower impedance indicates improved high-frequency performance
Ripple Current: Substitute ripple current ratings may vary; higher ratings indicate improved thermal capability

All substitute parts listed maintain the mandatory matching parameters. Physical dimension variations are noted to enable assessment of mechanical compatibility within specific application constraints.

Parameter Comparison

Parameter	KY35VB271M8X20LL (Main)	EKYB350ELL271MH15D	35ZLH270MEFC8X16	EEU-FR1V271L	UHE1V271MPD
Manufacturer	Chemi-Con	Chemi-Con	Rubycon	Panasonic Electronic Components	Nichicon
Series	KY	KYB	ZLH	FR-A	UHE
Capacitance	270 µF	270 µF	270 µF	270 µF	270 µF
Voltage - Rated	35 V	35 V	35 V	35 V	35 V
Tolerance	±20%	±20%	±20%	±20%	±20%
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Lifetime @ Temp.	7000 Hrs @ 105°C	7000 Hrs @ 105°C	8000 Hrs @ 105°C	8000 Hrs @ 105°C	7000 Hrs @ 105°C
Lead Spacing	0.138" (3.50 mm)	0.138" (3.50 mm)	0.138" (3.50 mm)	0.138" (3.50 mm)	0.138" (3.50 mm)
Size / Dimension	0.315" Dia (8.00 mm)	0.315" Dia (8.00 mm)	0.315" Dia (8.00 mm)	0.315" Dia (8.00 mm)	0.315" Dia (8.00 mm)
Height - Seated (Max)	0.787" (20.00 mm)	0.650" (16.50 mm)	0.689" (17.50 mm)	0.650" (16.50 mm)	0.787" (20.00 mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Can	Radial, Can	Radial, Can	Radial, Can	Radial, Can
Polarization	Polar	Polar	Polar	Polar	Polar
Impedance	69 mOhms	69 mOhms	45 mOhms	41 mOhms	69 mOhms
Ripple Current @ 120 Hz	525 mA	525 mA	625 mA	868 mA	735 mA
Ripple Current @ 100 kHz	1.05 A	1.05 A	1.25 A	1.24 A	1.05 A
Product Status	Obsolete	Active	Active	Active	Not For New Designs
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Affected
Inventory Status	975 Pcs New Original In Stock	1350 Pcs New Original In Stock	16411 Pcs New Original In Stock	12488 Pcs New Original In Stock	1107 Pcs New Original In Stock

Engineering Selection Recommendations

EKYB350ELL271MH15D (Chemi-Con KYB Series)

This substitute is the primary recommendation for direct replacement in active production and new designs. It maintains identical electrical specifications to the original KY35VB271M8X20LL while offering active product status and ROHS3 compliance. The reduced height of 0.650" (16.50 mm) versus the original 0.787" (20.00 mm) provides improved PCB clearance in space-constrained applications. Inventory availability of 1350 units supports immediate procurement. This part is suitable for both repair of existing equipment and new design implementations.

35ZLH270MEFC8X16 (Rubycon ZLH Series)

This substitute offers enhanced thermal performance with 8000-hour lifetime rating at 105°C compared to the original 7000-hour specification. Impedance is reduced to 45 mOhms, and ripple current ratings are increased to 625 mA @ 120 Hz and 1.25 A @ 100 kHz, indicating superior high-frequency performance. ROHS3 compliance and extensive inventory availability (16411 units) support high-volume applications. Height is 0.689" (17.50 mm), intermediate between the original and other substitutes. This part is recommended for applications requiring extended operational life or elevated ripple current handling.

EEU-FR1V271L (Panasonic FR-A Series)

This substitute provides the lowest impedance specification at 41 mOhms and the highest ripple current ratings at 868 mA @ 120 Hz and 1.24 A @ 100 kHz, indicating optimal performance in high-frequency switching applications. The 8000-hour lifetime rating at 105°C exceeds the original specification. ROHS3 compliance and substantial inventory (12488 units) support procurement. Height matches the EKYB350ELL271MH15D at 0.650" (16.50 mm). This part is recommended for applications with demanding ripple current or high-frequency noise filtering requirements.

UHE1V271MPD (Nichicon UHE Series)

This substitute maintains electrical specifications identical to the original KY35VB271M8X20LL, including 7000-hour lifetime, 69 mOhms impedance, and 525 mA / 1.05 A ripple current ratings. Height matches the original at 0.787" (20.00 mm), enabling direct mechanical substitution without PCB layout modification. ROHS3 compliance is confirmed. However, product status is classified as "Not For New Designs," and REACH status is "REACH Affected," indicating regulatory constraints for new applications. This part is suitable for repair and maintenance of existing equipment where design changes are not feasible. Inventory availability is 1107 units.

Compliance and Regulatory Considerations:

All substitute parts except the original KY35VB271M8X20LL are ROHS3 compliant, supporting compliance with current environmental regulations. The original part is RoHS non-compliant. For applications subject to REACH regulations, EEU-FR1V271L, EKYB350ELL271MH15D, and 35ZLH270MEFC8X16 are unaffected, while UHE1V271MPD is REACH affected and may require additional documentation for certain jurisdictions.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a different height than the original KY35VB271M8X20LL?

A: Yes, provided the substitute height does not exceed available PCB clearance. The original height is 0.787" (20.00 mm). EKYB350ELL271MH15D and EEU-FR1V271L are 0.650" (16.50 mm), and 35ZLH270MEFC8X16 is 0.689" (17.50 mm). Reduced height provides additional clearance; increased height requires verification of available space. UHE1V271MPD matches the original height at 0.787" (20.00 mm) for direct substitution without layout modification.

Q: What is the difference between the substitute parts in terms of performance?

A: All substitutes maintain the mandatory electrical specifications: 270 µF capacitance, 35 V rating, ±20% tolerance, and -40°C ~ 105°C operating range. Performance differences exist in secondary parameters: 35ZLH270MEFC8X16 and EEU-FR1V271L offer 8000-hour lifetime versus 7000 hours for the original and UHE1V271MPD. EEU-FR1V271L provides the lowest impedance (41 mOhms) and highest ripple current ratings, optimizing high-frequency performance. EKYB350ELL271MH15D and UHE1V271MPD maintain impedance and ripple current identical to the original.

Q: Are all substitute parts RoHS compliant?

A: Yes, all substitute parts are ROHS3 compliant. The original KY35VB271M8X20LL is RoHS non-compliant. For new designs and applications subject to RoHS regulations, any of the four substitute parts satisfy compliance requirements.

Q: Which substitute is best for new product designs?

A: EKYB350ELL271MH15D is the primary recommendation for new designs. It is manufactured by the same company as the original (Chemi-Con), maintains identical electrical specifications, offers active product status, is ROHS3 compliant, and has substantial inventory availability. For applications requiring enhanced thermal performance or high-frequency ripple current handling, 35ZLH270MEFC8X16 or EEU-FR1V271L are recommended alternatives.

Q: Can I use UHE1V271MPD in new designs?

A: UHE1V271MPD is classified as "Not For New Designs" by the manufacturer. It is suitable for repair and maintenance of existing equipment but should not be selected for new product development. EKYB350ELL271MH15D, 35ZLH270MEFC8X16, or EEU-FR1V271L are appropriate alternatives for new designs.

Q: What does "REACH Affected" mean for UHE1V271MPD?

A: REACH Affected status indicates the part may contain substances subject to REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) regulations. Additional documentation or compliance verification may be required for applications in certain jurisdictions. EKYB350ELL271MH15D, 35ZLH270MEFC8X16, and EEU-FR1V271L are REACH Unaffected and do not require this additional consideration.

Q: Is lead spacing identical across all substitute parts?

A: Yes, all substitute parts maintain 0.138" (3.50 mm) lead spacing, identical to the original KY35VB271M8X20LL. This ensures PCB footprint compatibility without layout modification.

Q: Which substitute offers the best ripple current performance?

A: EEU-FR1V271L provides the highest ripple current ratings at 868 mA @ 120 Hz and 1.24 A @ 100 kHz. 35ZLH270MEFC8X16 offers the second-highest ratings at 625 mA @ 120 Hz and 1.25 A @ 100 kHz. EKYB350ELL271MH15D and UHE1V271MPD maintain the original specifications at 525 mA @ 120 Hz and 1.05 A @ 100 kHz. Higher ripple current capability indicates improved thermal performance under AC stress conditions.

Q: Can I mix different substitute parts in the same circuit board?

A: Yes, all substitute parts are electrically equivalent and can be used interchangeably within the same circuit. However, for manufacturing consistency and supply chain management, using a single substitute part across a production run is recommended.

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