188LBB100M2BF Equivalent & Substitute Parts

Part Overview

The 188LBB100M2BF is a 1800 µF, 100 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring stable capacitance and extended operational life. The part is currently Active in product status with 1041 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity when the primary part becomes unavailable or when design requirements permit functional alternatives.

Substiute Parts

188LBB100M2BF

Cornell Dubilier / Illinois CapacitorIn Stock: 1073188LBB100M2BF Datasheet

Current PartRFQ

LLS2A182MELZ

NichiconIn Stock: 1026LLS2A182MELZ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 188LBB100M2BF is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Capacitance: 1800 µF (exact match required)
• Voltage Rating: 100 V (exact match required)
• Tolerance: ±20% (exact match required)
• Package / Case: Radial, Can - Snap-In (exact match required)
• Lead Spacing: 0.394" (10.00mm) (exact match required)
• Physical Dimensions: 0.866" Dia × 1.654" Height (exact match required)
• Mounting Type: Through Hole (exact match required)
• Polarization: Polar (exact match required)
• Lifetime @ Temperature: 3000 Hrs @ 85°C (exact match required)
• Operating Temperature Range: -40°C ~ 85°C (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)

Substitute parts must satisfy all mandatory parameters to ensure direct functional and mechanical compatibility without circuit redesign or PCB modification.

Parameter Comparison

Engineering Selection Recommendations

Both the 188LBB100M2BF and LLS2A182MELZ meet identical electrical and mechanical specifications for general-purpose aluminum electrolytic capacitor applications. Selection between these parts should be based on the following factors:

Product Availability: The 188LBB100M2BF (Cornell Dubilier) maintains higher inventory levels at 1041 units compared to the LLS2A182MELZ (Nichicon) at 946 units. For applications requiring immediate procurement, the primary part offers superior availability.

Regulatory Compliance: Both parts are ROHS3 Compliant, REACH Unaffected, and classified under ECCN EAR99 and HTSUS 8532.22.0040. No compliance differentiation exists between the two options.

Active Product Status: Both parts maintain Active product status, ensuring continued manufacturer support and long-term supply viability.

Electrical Performance: Both parts deliver identical capacitance (1800 µF), voltage rating (100 V), tolerance (±20%), lifetime (3000 Hrs @ 85°C), and ripple current at 120 Hz (2.77 A). The substitute part exhibits slightly lower ripple current at high frequency (3.1855 A @ 50 kHz versus 3.4625 A @ 10 kHz for the primary part), which remains within acceptable operating parameters for general-purpose applications.

Mechanical Compatibility: Identical lead spacing, physical dimensions, height, package style, and mounting type ensure direct PCB compatibility without layout modification.

Frequently Asked Questions (FAQ)

Q: Can the LLS2A182MELZ directly replace the 188LBB100M2BF without PCB modification?

A: Yes. Both parts share identical lead spacing (0.394" / 10.00mm), physical dimensions (0.866" diameter), height (1.654"), package style (Radial, Can - Snap-In), and mounting type (Through Hole). Direct substitution on existing PCBs is mechanically and electrically compatible.

Q: Are there differences in ESR (Equivalent Series Resistance) between these parts?

A: The 188LBB100M2BF specifies ESR at 138.16 mOhm @ 120 Hz. The LLS2A182MELZ does not provide ESR specification in the available data. For applications where ESR is a critical design parameter, the primary part (188LBB100M2BF) should be selected.

Q: Do both parts operate across the same temperature range?

A: Yes. Both parts operate from -40°C to 85°C and maintain a rated lifetime of 3000 hours at 85°C, ensuring equivalent thermal performance in general-purpose applications.

Q: What is the difference in ripple current ratings?

A: Both parts deliver 2.77 A ripple current at 120 Hz. At high frequency, the 188LBB100M2BF provides 3.4625 A @ 10 kHz, while the LLS2A182MELZ provides 3.1855 A @ 50 kHz. For applications operating at 120 Hz or low-frequency ripple environments, both parts are equivalent. For high-frequency ripple applications, the primary part offers higher current capacity.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the 188LBB100M2BF and LLS2A182MELZ are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements for electronic component procurement.

Q: Which part should be selected for new designs?

A: Both parts are suitable for new designs. Selection should prioritize the 188LBB100M2BF (Cornell Dubilier) if higher inventory availability is required. The LLS2A182MELZ (Nichicon) serves as a qualified alternative when primary part availability is constrained.