B43501F2188M67 Equivalent & Substitute Parts

Part Overview

The B43501F2188M67 is a 1800 µF, 200 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by EPCOS - TDK Electronics. This component is designed for general purpose applications requiring high capacitance and voltage ratings in through-hole mounting configurations. The part is currently in active production status with 274,082 units available in inventory.

Substitute parts become necessary when the primary part reaches end-of-life status, inventory constraints occur, or design revisions require alternative component sources while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit
Capacitance	1800	µF
Voltage - Rated	200	V
Tolerance	±20%	-
ESR @ 100Hz	55	mOhm
Lifetime @ 85°C	10000	Hrs
Operating Temperature Range	-40°C ~ 85°C	-
Package Type	Radial, Can - Snap-In	-
Mounting Type	Through Hole	-
Lead Spacing	10.00	mm
Diameter	35.00	mm
Height (Seated Max)	47.00	mm

Substitute Part Grouping Explanation

Substitution eligibility for the B43501F2188M67 is determined by strict equivalence across the following critical parameters:

Capacitance: 1800 µF (exact match required)
Voltage Rating: 200 V (exact match required)
Tolerance: ±20% (exact match required)
Package Type: Radial, Can - Snap-In (exact match required)
Mounting Type: Through Hole (exact match required)
Lead Spacing: 10.00 mm (exact match required)
Physical Dimensions: 35.00 mm diameter, 47.00 mm height seated maximum (exact match required)
Operating Temperature Range: -40°C ~ 85°C (exact match required)
Polarization: Polar (exact match required)

The substitute part B43540A2188M000 meets all critical electrical and mechanical parameters, with the exception of ESR performance characteristics and product lifecycle status, which are documented in the comparison table below.

Parameter Comparison

Parameter	B43501F2188M67 (Main Part)	B43540A2188M000 (Substitute)	Match Status
Manufacturer	EPCOS - TDK Electronics	EPCOS - TDK Electronics	Match
Series	B43501	B43540	Different Series
Capacitance	1800 µF	1800 µF	Match
Voltage - Rated	200 V	200 V	Match
Tolerance	±20%	±20%	Match
ESR @ 100Hz	55 mOhm	50 mOhm	Lower in Substitute
Impedance	75 mOhms	65 mOhms	Lower in Substitute
Lifetime @ 85°C	10000 Hrs	10000 Hrs	Match
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	Match
Ripple Current @ 100Hz	4.75 A	5.3 A	Higher in Substitute
Package / Case	Radial, Can - Snap-In	Radial, Can - Snap-In	Match
Mounting Type	Through Hole	Through Hole	Match
Lead Spacing	10.00 mm	10.00 mm	Match
Size / Dimension	35.00 mm Dia	35.00 mm Dia	Match
Height - Seated (Max)	47.00 mm	47.00 mm	Match
Product Status	Active	Not For New Designs	Different Status
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
MSL Rating	1 (Unlimited)	1 (Unlimited)	Match
REACH Status	REACH Unaffected	REACH Unaffected	Match

Engineering Selection Recommendations

The B43540A2188M000 is electrically and mechanically compatible with the B43501F2188M67 for applications where the substitute part's performance characteristics are acceptable. Both parts are manufactured by EPCOS - TDK Electronics and comply with ROHS3 and REACH regulatory requirements.

The primary distinction is product lifecycle status: B43501F2188M67 is in active production, while B43540A2188M000 is designated "Not For New Designs." This designation indicates the B43540 series is in mature or declining production phase. For new product designs, the B43501F2188M67 is the preferred selection due to its active status and assured long-term availability.

The B43540A2188M000 may be selected for legacy system repairs, field replacements, or applications where existing inventory of this part is available. The lower ESR and impedance values of the substitute part indicate improved high-frequency performance characteristics, which may be advantageous in certain circuit topologies.

Frequently Asked Questions (FAQ)

Q: Can B43540A2188M000 be used as a direct replacement for B43501F2188M67?

A: Yes, from an electrical and mechanical standpoint. Both parts share identical capacitance (1800 µF), voltage rating (200 V), tolerance (±20%), package type (radial snap-in), mounting configuration (through-hole), and physical dimensions. The substitute part exhibits lower ESR and impedance, which represents improved performance in most applications.

Q: Why is B43540A2188M000 marked "Not For New Designs"?

A: This designation indicates the B43540 series has reached mature production status and may have limited future availability. EPCOS - TDK Electronics recommends using the B43501F2188M67 (active status) for new product development to ensure component availability throughout the product lifecycle.

Q: Are there mechanical compatibility concerns when substituting these parts?

A: No. Both parts are identical in package type (radial, can snap-in), lead spacing (10.00 mm), diameter (35.00 mm), and seated height (47.00 mm). PCB footprints and mounting hardware are fully compatible.

Q: What is the significance of the different ESR values?

A: The B43540A2188M000 has lower ESR (50 mOhm vs. 55 mOhm) and impedance (65 mOhms vs. 75 mOhms). Lower ESR generally results in reduced heat generation and improved transient response in power supply applications. This represents a performance improvement over the main part.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both B43501F2188M67 and B43540A2188M000 are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 (unlimited moisture sensitivity level). Compliance certifications are equivalent.

Q: What is the inventory status of each part?

A: B43501F2188M67 has 274,082 units in stock (active production). B43540A2188M000 has 1,028 units in stock (not for new designs). For applications requiring immediate availability or long-term supply assurance, B43501F2188M67 is recommended.

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