UCD1V680MCL1GS Equivalent & Substitute Parts

Part Overview

The UCD1V680MCL1GS is a 68 µF, 35 V aluminum electrolytic capacitor manufactured by Nichicon in the UCD series. This surface mount radial can capacitor is rated for 2000 hours at 105°C and is designed for automotive applications with AEC-Q200 compliance. The part is currently active in production with 785 units in stock.

Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application-specific performance requirements. Substitutes maintain the core electrical specifications (capacitance, voltage rating, temperature rating, and lifetime) while offering variations in ripple current handling, impedance characteristics, and physical dimensions within acceptable tolerances.

Key Parameters

Parameter	Value	Unit
Capacitance	68	µF
Tolerance	±20%	—
Voltage - Rated	35	V
Lifetime @ Temperature	2000 Hrs @ 105°C	—
Operating Temperature Range	-55°C to 105°C	—
Polarization	Polar	—
Package / Case	Radial, Can - SMD	—
Mounting Type	Surface Mount	—
Size / Dimension	0.248" Dia (6.30mm)	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following core parameters:

Capacitance: 68 µF (exact match required)
Tolerance: ±20% (exact match required)
Voltage Rating: 35 V (exact match required)
Lifetime: 2000 Hrs @ 105°C (exact match required)
Operating Temperature: -55°C to 105°C (exact match required)
Polarization: Polar (exact match required)
Package: Radial, Can - SMD (exact match required)
Mounting: Surface Mount (exact match required)
Diameter: 0.248" (6.30mm) (exact match required)

Secondary parameters that may vary within acceptable ranges include ripple current capacity, impedance, height, and surface mount land size. Parts are grouped as follows:

Direct Manufacturer Substitutes: Parts from Nichicon (UWD series) and other manufacturers (Würth Elektronik, Panasonic FP series) that meet all core parameters with minor variations in ripple current and impedance.

Upgrade Options: Panasonic FK series parts offering enhanced performance characteristics (higher ripple current capacity, halogen-free designation, high temperature reflow capability) while maintaining all core electrical specifications.

Similar Alternatives: Cornell Dubilier Electronics AFK series and Rubycon TKV series providing equivalent electrical performance with minor dimensional variations in height and land size.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Capacitance (µF)	Voltage (V)	Lifetime @ 105°C	ESR @ 100kHz	Ripple Current @ 100kHz (mA)	Height (Max)	AEC-Q200	Automotive Rated	Inventory (Pcs)
UCD1V680MCL1GS	Nichicon	UCD	68	35	2000 Hrs	320 mOhms	290	0.315" (8.00mm)	Yes	Yes	785
UWD1V680MCL1GS	Nichicon	UWD	68	35	2000 Hrs	340 mOhms	280	0.303" (7.70mm)	No	No	1637
865080545011	Würth Elektronik	WCAP-ASLI	68	35	2000 Hrs	400 mOhms	265	0.303" (7.70mm)	No	No	4105
EEE-FPV680XAP	Panasonic	FP	68	35	2000 Hrs	160 mOhm	600	0.303" (7.70mm)	Yes	Yes	10372
EEE-FT1V680AL	Panasonic	FT	68	35	2000 Hrs	260 mOhm	300	0.240" (6.10mm)	Yes	Yes	13848
EEE-FT1V680AP	Panasonic	FT	68	35	2000 Hrs	260 mOhm	300	0.240" (6.10mm)	Yes	Yes	5700
EEE-FKV680XAL	Panasonic	FK	68	35	2000 Hrs	340 mOhms	280	0.315" (8.00mm)	Yes	Yes	4992
EEE-FKV680XAP	Panasonic	FK	68	35	2000 Hrs	340 mOhms	280	0.315" (8.00mm)	Yes	Yes	2850
AFK686M35X16T-F	Cornell Dubilier	AFK	68	35	2000 Hrs	340 mOhm	280	0.323" (8.20mm)	Yes	Yes	1585
35TKV68M6.3X8	Rubycon	TKV	68	35	2000 Hrs	160 mOhm	600	0.315" (8.00mm)	Yes	Yes	3147
EEE-FK1V680XP	Panasonic	FK	68	35	2000 Hrs	340 mOhms	280	0.315" (8.00mm)	Yes	Yes	989

Engineering Selection Recommendations

For Automotive Applications with AEC-Q200 Requirement:

The UCD1V680MCL1GS is AEC-Q200 certified. Direct substitutes maintaining this certification include EEE-FPV680XAP, EEE-FT1V680AL, EEE-FT1V680AP, EEE-FKV680XAL, EEE-FKV680XAP, AFK686M35X16T-F, 35TKV68M6.3X8, and EEE-FK1V680XP. All are rated for automotive applications and meet the same lifetime and temperature specifications.

For General Purpose Applications:

The UWD1V680MCL1GS (Nichicon) and 865080545011 (Würth Elektronik) are suitable for general purpose applications where AEC-Q200 certification is not required. Both maintain identical core electrical parameters.

For High Ripple Current Environments:

EEE-FPV680XAP and 35TKV68M6.3X8 offer superior ripple current capacity (600 mA @ 100 kHz) compared to the original part (290 mA @ 100 kHz), making them suitable for applications requiring enhanced current handling.

For Compact PCB Layouts:

EEE-FT1V680AL and EEE-FT1V680AP feature reduced height (0.240" / 6.10mm) compared to the original part (0.315" / 8.00mm), enabling space-constrained designs while maintaining all electrical specifications.

For Halogen-Free Requirements:

EEE-FT1V680AL (FT series, halogen free) and EEE-FKV680XAL (FK series, halogen free) meet environmental compliance requirements for halogen-free manufacturing.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with different ripple current rating?

A: Yes, provided the substitute part meets or exceeds the ripple current requirement of your application. The UCD1V680MCL1GS specifies 290 mA @ 100 kHz. Substitutes with equal or higher ripple current ratings (such as EEE-FPV680XAP at 600 mA) are directly compatible. Substitutes with lower ripple current ratings require application review to confirm thermal performance.

Q: What is the impact of impedance variation among substitutes?

A: Impedance affects high-frequency performance and thermal behavior under ripple current stress. The original part specifies 320 mOhms. Substitutes with lower impedance (160 mOhm for EEE-FPV680XAP and 35TKV68M6.3X8) provide improved performance in high-frequency filtering applications. Substitutes with higher impedance (340-400 mOhm) are acceptable for general filtering applications but may generate slightly more heat under identical ripple current conditions.

Q: Are there physical compatibility concerns with height variations?

A: The original part has a maximum seated height of 0.315" (8.00mm). Substitutes with reduced height (0.240" / 6.10mm for EEE-FT series) are compatible with any PCB layout designed for the original part. The Cornell Dubilier AFK686M35X16T-F at 0.323" (8.20mm) is marginally taller but remains within typical PCB clearance tolerances. Verify clearance for your specific application if height is constrained.

Q: Do all substitutes have the same surface mount land size?

A: Most substitutes use 0.260" L x 0.260" W (6.60mm x 6.60mm) land size, matching the original part. The exception is AFK686M35X16T-F, which specifies 0.260" L x 0.307" W (6.60mm x 7.80mm). Verify PCB footprint compatibility before selecting this part.

Q: Which substitutes are suitable for automotive applications?

A: All listed substitutes except UWD1V680MCL1GS and 865080545011 are rated for automotive applications. AEC-Q200 certified options include EEE-FPV680XAP, EEE-FT1V680AL, EEE-FT1V680AP, EEE-FKV680XAL, EEE-FKV680XAP, AFK686M35X16T-F, 35TKV68M6.3X8, and EEE-FK1V680XP.

Q: What is the difference between FT and FK series Panasonic capacitors?

A: Both FT and FK series meet AEC-Q200 automotive requirements and share identical core electrical specifications (68 µF, 35 V, 2000 Hrs @ 105°C). The FK series offers enhanced high-temperature reflow capability and halogen-free designation. The FT series provides a more compact form factor (0.240" height vs. 0.315" for FK). Select based on thermal processing requirements and PCB space constraints.

Q: Can I substitute the original part with a non-AEC-Q200 part?

A: Substitution with non-AEC-Q200 parts (UWD1V680MCL1GS, 865080545011) is permissible only if your application does not require automotive qualification. Verify design specifications and customer requirements before proceeding with non-certified alternatives.

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