Equivalent & Substitute Parts for KY50VB151M10X12LL

Part Overview

The KY50VB151M10X12LL is a 150 µF, 50 V aluminum electrolytic capacitor manufactured by Chemi-Con in the KY series. This radial, through-hole component is rated for 7000 hours at 105°C and is designed for general-purpose applications. The part is currently classified as obsolete, making identification of equivalent and substitute components essential for ongoing system support, maintenance, and design continuity.

Key Parameters

Parameter	Value
Capacitance	150 µF
Voltage Rating	50 V
Tolerance	±20%
Lifetime @ Temperature	7000 Hrs @ 105°C
Operating Temperature Range	-40°C ~ 105°C
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.197" (5.00 mm)
Case Diameter	0.394" (10.00 mm)
Impedance	120 mOhms

Substitute Part Grouping Explanation

Substitution of the KY50VB151M10X12LL is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

Capacitance: 150 µF (exact match required)
Voltage Rating: 50 V (exact match required)
Tolerance: ±20% (exact match required)
Lifetime: 7000 Hrs @ 105°C (exact match required)
Operating Temperature: -40°C ~ 105°C (exact match required)
Impedance: 120 mOhms (exact match required)

Mechanical Equivalence Criteria:

Mounting Type: Through Hole (exact match required)
Package Type: Radial, Can (exact match required)
Lead Spacing: 0.197" (5.00 mm) (exact match required)
Case Diameter: 0.394" (10.00 mm) (exact match required)

Ripple Current Performance:

Low Frequency (120 Hz): 304 mA minimum
High Frequency (100 kHz): 760 mA minimum

Substitute parts must meet or exceed all electrical specifications and maintain identical mechanical dimensions to ensure direct board-level compatibility without PCB redesign.

Parameter Comparison

Parameter	KY50VB151M10X12LL (Main)	EKY-500ELL151MJC5S (Upgrade)	UHE1H151MPD (Parametric Equivalent)
Manufacturer	Chemi-Con	Chemi-Con	Nichicon
Capacitance	150 µF	150 µF	150 µF
Voltage Rating	50 V	50 V	50 V
Tolerance	±20%	±20%	±20%
Lifetime @ 105°C	7000 Hrs	7000 Hrs	7000 Hrs
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Polarization	Polar	Polar	Polar
Mounting Type	Through Hole	Through Hole	Through Hole
Package Type	Radial, Can	Radial, Can	Radial, Can
Lead Spacing	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)
Case Diameter	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)
Height (Seated Max)	0.492" (12.50 mm)	0.551" (14.00 mm)	0.492" (12.50 mm)
Impedance	120 mOhms	120 mOhms	120 mOhms
Ripple Current @ 120 Hz	304 mA	304 mA	532 mA
Ripple Current @ 100 kHz	760 mA	760 mA	760 mA
Product Status	Obsolete	Active	Not For New Designs
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	Unaffected	Unaffected	Affected

Engineering Selection Recommendations

For Direct Replacement (Preferred):

The EKY-500ELL151MJC5S is the primary substitute for the KY50VB151M10X12LL. Both components are manufactured by Chemi-Con and share identical electrical specifications. The EKY-500ELL151MJC5S is currently in active production status, ensuring long-term availability. The component is ROHS3 compliant and REACH unaffected, meeting modern regulatory requirements. The height difference of 0.059" (1.50 mm) is within typical PCB clearance tolerances for through-hole radial capacitors and does not require board redesign.

For Cross-Manufacturer Substitution:

The UHE1H151MPD manufactured by Nichicon provides parametric equivalence with identical electrical performance. This component maintains the same case diameter, lead spacing, and height as the original KY50VB151M10X12LL, ensuring mechanical compatibility. The UHE1H151MPD is ROHS3 compliant. However, this part is classified as "Not For New Designs," limiting its suitability for new development. The REACH status is listed as affected, requiring compliance verification for specific applications.

Regulatory Compliance Consideration:

The original KY50VB151M10X12LL is RoHS non-compliant. Both substitute options (EKY-500ELL151MJC5S and UHE1H151MPD) are ROHS3 compliant, supporting transition to compliant supply chains where required by application standards or customer specifications.

Frequently Asked Questions (FAQ)

Q: Can the EKY-500ELL151MJC5S be used as a direct replacement for the KY50VB151M10X12LL without PCB modification?

A: Yes. The EKY-500ELL151MJC5S maintains identical lead spacing (0.197" / 5.00 mm) and case diameter (0.394" / 10.00 mm). The height difference of 0.059" (1.50 mm) is within standard PCB clearance margins for radial through-hole capacitors and does not require board redesign.

Q: What is the difference between the EKY-500ELL151MJC5S and UHE1H151MPD?

A: Both components meet the electrical specifications of the original part. The EKY-500ELL151MJC5S is manufactured by Chemi-Con and is in active production. The UHE1H151MPD is manufactured by Nichicon and is classified as "Not For New Designs." The UHE1H151MPD offers higher ripple current capability at 120 Hz (532 mA vs. 304 mA), which may provide additional performance margin in specific applications.

Q: Are there any height restrictions that would prevent using the EKY-500ELL151MJC5S?

A: The EKY-500ELL151MJC5S has a maximum seated height of 0.551" (14.00 mm) compared to the original 0.492" (12.50 mm). Verify that the PCB layout and enclosure clearances accommodate this 0.059" (1.50 mm) increase. In most through-hole applications, this difference is not restrictive.

Q: Which substitute should be selected for new product designs?

A: The EKY-500ELL151MJC5S is the recommended choice for new designs. It is in active production status, ROHS3 compliant, and manufactured by the same supplier as the original component, ensuring consistent quality and long-term availability.

Q: Does the UHE1H151MPD REACH-affected status affect its usability?

A: The REACH-affected status indicates that the component may contain substances of concern under REACH regulations. Compliance requirements depend on the specific application, end-use market, and customer specifications. Verify REACH compliance requirements with your supply chain and regulatory team before selection.

Q: Are the electrical specifications identical across all three parts?

A: The capacitance, voltage rating, tolerance, lifetime, operating temperature range, and impedance are identical. The ripple current at 120 Hz differs: the UHE1H151MPD provides 532 mA compared to 304 mA for both Chemi-Con parts. The ripple current at 100 kHz is identical at 760 mA across all three components.

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