PEG124KB2680QL1 Equivalent & Substitute Parts

Part Overview

The PEG124KB2680QL1 is a 68 µF, 40 V aluminum electrolytic capacitor in axial, can package configuration manufactured by KEMET. This component is classified as discontinued at DiGi Electronics, necessitating identification of equivalent and substitute parts for ongoing design support and procurement continuity. The part operates across a temperature range of -40°C to 125°C with a rated lifetime of 2000 hours at 125°C, making it suitable for general-purpose applications requiring stable capacitance and low equivalent series resistance.

Substiute Parts

PEG124KB2680QL1

KEMETIn Stock: 1171PEG124KB2680QL1 Datasheet

Current PartRFQ

PEG124KB2680QE4

KEMETIn Stock: 676PEG124KB2680QE4 Datasheet

MFR RecommendedRFQ

PEG124KB2680QT1

KEMETIn Stock: 724PEG124KB2680QT1 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PEG124KB2680QL1 is determined by strict equivalence across the following critical parameters:

• Capacitance Value: 68 µF (exact match required)
• Voltage Rating: 40 V (exact match required)
• Tolerance: -10%, +30% (exact match required)
• ESR @ 100 Hz: 1.4 Ohm (exact match required)
• Lifetime @ Temperature: 2000 Hrs @ 125°C (exact match required)
• Operating Temperature Range: -40°C ~ 125°C (exact match required)
• Package Type: Axial, Can (exact match required)
• Mounting Type: Through Hole (exact match required)
• Physical Dimensions: 0.394" Dia x 1.142" L / 10.00mm x 29.00mm (exact match required)
• Polarization: Polar (exact match required)
• Series: PEG124 (exact match required)

All identified substitute parts maintain these core electrical and mechanical specifications. Variations in ripple current capacity at high frequency and product status represent the only permissible differences among equivalent parts.

Parameter Comparison

Engineering Selection Recommendations

PEG124KB2680QE4 (MFR Recommended Substitute)

The PEG124KB2680QE4 is the manufacturer-recommended equivalent for the discontinued PEG124KB2680QL1. This part maintains identical electrical specifications across all critical parameters including capacitance, voltage rating, tolerance, ESR, lifetime rating, and operating temperature range. The PEG124KB2680QE4 carries active product status, ensuring continued availability and supply chain support. Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The ripple current capacity at high frequency (560 mA @ 5 kHz) is specified for the QE4 variant, providing additional performance data for high-frequency applications.

PEG124KB2680QT1 (Upgrade Substitute)

The PEG124KB2680QT1 is an active upgrade option that maintains all core electrical and mechanical specifications of the original part. This variant offers enhanced ripple current handling at high frequency (1.5 A @ 5 kHz), providing superior performance margin in applications subject to high-frequency ripple stress. The PEG124KB2680QT1 is ROHS3 compliant and REACH unaffected. Selection of this upgrade is appropriate for designs requiring increased high-frequency ripple current capacity without modification to circuit board layout or component footprint.

Both substitute parts are direct replacements from the same manufacturer series, requiring no circuit redesign or board layout modification.

Frequently Asked Questions (FAQ)

Q: Can PEG124KB2680QE4 be used as a direct replacement for PEG124KB2680QL1?

A: Yes. The PEG124KB2680QE4 is electrically and mechanically equivalent to the PEG124KB2680QL1 across all specified parameters. Both parts share identical capacitance (68 µF), voltage rating (40 V), tolerance (-10%, +30%), ESR (1.4 Ohm @ 100 Hz), lifetime rating (2000 Hrs @ 125°C), operating temperature range (-40°C ~ 125°C), and physical dimensions (10.00mm x 29.00mm). No circuit modification is required.

Q: What is the difference between PEG124KB2680QE4 and PEG124KB2680QT1?

A: Both parts are equivalent to the original PEG124KB2680QL1 across all core electrical specifications. The primary difference is ripple current capacity at high frequency: PEG124KB2680QE4 supports 560 mA @ 5 kHz, while PEG124KB2680QT1 supports 1.5 A @ 5 kHz. Selection between these variants depends on the high-frequency ripple current requirements of the application.

Q: Are all three parts (QL1, QE4, QT1) physically identical?

A: Yes. All three parts share identical physical dimensions of 0.394" diameter by 1.142" length (10.00mm x 29.00mm). They are all axial, can-type aluminum electrolytic capacitors with through-hole mounting. No board layout modification is required when substituting between these parts.

Q: What is the product status difference between the main part and substitutes?

A: The PEG124KB2680QL1 is discontinued at DiGi Electronics. Both PEG124KB2680QE4 and PEG124KB2680QT1 carry active product status, ensuring ongoing availability and supply chain continuity.

Q: Do all parts meet current regulatory compliance requirements?

A: Yes. The PEG124KB2680QL1, PEG124KB2680QE4, and PEG124KB2680QT1 are all ROHS3 compliant and REACH unaffected, meeting current regulatory standards for electronic components.

Q: Can PEG124KB2680QT1 be used in applications originally designed for PEG124KB2680QL1?

A: Yes. The PEG124KB2680QT1 maintains all electrical and mechanical specifications of the original part and offers enhanced high-frequency ripple current capacity. This upgrade provides additional performance margin without requiring circuit or board modifications.