Equivalent & Substitute Parts for ESW337M035AH2AA

Part Overview

The ESW337M035AH2AA is a 330 µF, 35 V aluminum electrolytic capacitor manufactured by KEMET in the ESW series. This radial, through-hole component is rated for general-purpose applications with a 5000-hour lifetime at 105°C and an operating temperature range of -40°C to 105°C. The part is currently active in production and ROHS3 compliant.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when design requirements demand alternative performance characteristics such as lower ESR or extended lifetime ratings, or when supply chain optimization requires sourcing from multiple manufacturers while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit	Substitution Relevance
Capacitance	330	µF	Critical - must match exactly
Voltage Rating	35	V	Critical - must match or exceed
Tolerance	±20%	%	Critical - must match
Polarization	Polar	-	Critical - must match
Package Type	Radial, Can	-	Critical - must match for through-hole mounting
Lead Spacing	5.00	mm	Critical - must match for PCB compatibility
Diameter	10.00	mm	Important - affects board layout
Height	14.00 - 17.50	mm	Important - affects clearance and form factor
ESR @ 100 kHz	38 - 118	mOhm	Important - affects ripple current handling
Lifetime @ 105°C	4000 - 10000	Hours	Important - affects reliability and design margin
Operating Temperature	-40 to 105	°C	Important - must meet application requirements
Mounting Type	Through Hole	-	Critical - must match
RoHS Status	ROHS3 Compliant	-	Important - regulatory requirement

Substitute Part Grouping Explanation

Substitution logic for the ESW337M035AH2AA is based on strict electrical and mechanical parameter matching:

Critical Matching Parameters:

Capacitance: 330 µF (exact match required)
Voltage Rating: 35 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Package Type: Radial, Can (exact match required)
Lead Spacing: 5.00 mm (exact match required)
Mounting Type: Through Hole (exact match required)

Compatible Variation Parameters:

Height: 14.00 mm to 17.50 mm (acceptable within PCB clearance constraints)
ESR: 35 mOhm to 118 mOhm (lower ESR provides improved ripple current handling; higher ESR acceptable if ripple current requirements are met)
Lifetime @ 105°C: 4000 to 10000 hours (equal or greater lifetime acceptable)
Operating Temperature: -40°C to 105°C minimum (equal or extended range acceptable)

Regulatory Compliance: All substitute parts must maintain ROHS3 compliance and REACH unaffected status for general-purpose applications. Automotive-rated parts (AEC-Q200) are acceptable substitutes for general-purpose applications.

Parameter Comparison

Manufacturer	Part Number	Series	Capacitance (µF)	Voltage (V)	Tolerance	ESR @ 100 kHz (mOhm)	Lifetime @ 105°C (Hrs)	Height (mm)	Product Status	Inventory (Pcs)
KEMET	ESW337M035AH2AA	ESW	330	35	±20%	68	5000	17.00	Active	3408
KEMET	ESY337M035AH2AA	ESY	330	35	±20%	38	4000	17.00	Active	2558
Rubycon	35YXG330MEFC10X16	YXG	330	35	±20%	60	5000	17.50	Not For New Designs	5898
Rubycon	35ZLH330MEFC10X12.5	ZLH	330	35	±20%	39	10000	14.00	Active	4400
Rubycon	35ZLK330M10X16	ZLK	330	35	±20%	38	5000	17.50	Last Time Buy	1800
Rubycon	35ZLQ330MEFC10X12.5	ZLQ	330	35	±20%	35	5000	14.00	Active	1636
Rubycon	35ZLS330MEFC10X12.5	ZLS	330	35	±20%	45	6000	14.00	Active	875
EPCOS - TDK Electronics	B41858C7337M000	B41858	330	35	±20%	105	5000	17.00	Active	16072
Panasonic Electronic Components	EEU-FR1V331U	FR-A	330	35	±20%	43	5000	14.00	Active	2673
Chemi-Con	ELXZ350ELL331MJ16S	LXZ	330	35	±20%	68	5000	17.50	Active	2438
Nichicon	UHE1V331MPD	UHE	330	35	±20%	60	7000	16.00	Not For New Designs	1091

Engineering Selection Recommendations

Primary Substitutes (Active Status, Recommended for New Designs):

ESY337M035AH2AA (KEMET) - Same manufacturer as primary part. Lower ESR (38 mOhm) provides improved ripple current performance. Slightly reduced lifetime (4000 hours) is acceptable for most general-purpose applications. Identical mechanical form factor.
35ZLH330MEFC10X12.5 (Rubycon) - Extended lifetime rating (10000 hours) provides superior reliability margin. Lower ESR (39 mOhm) and reduced height (14.00 mm) offer improved performance and board clearance. Active product status.
35ZLQ330MEFC10X12.5 (Rubycon) - Lowest ESR (35 mOhm) among active substitutes, optimizing ripple current handling. Extended lifetime (5000 hours) with compact height (14.00 mm). Active product status.
35ZLS330MEFC10X12.5 (Rubycon) - Extended lifetime (6000 hours) with moderate ESR (45 mOhm). Compact height (14.00 mm). Active product status.
EEU-FR1V331U (Panasonic Electronic Components) - Moderate ESR (43 mOhm) with standard 5000-hour lifetime. Compact height (14.00 mm). Active product status.
ELXZ350ELL331MJ16S (Chemi-Con) - Automotive-rated (AEC-Q200) with extended operating temperature range (-55°C to 105°C). Identical ESR (68 mOhm) to primary part. Active product status.

Secondary Substitutes (Limited Availability or Restricted Status):

B41858C7337M000 (EPCOS - TDK Electronics) - Automotive-rated (AEC-Q200) with extended operating temperature range (-55°C to 105°C). Higher ESR (105 mOhm) requires verification of ripple current requirements. Highest inventory availability (16072 pcs). Active product status.
35YXG330MEFC10X16 (Rubycon) - Marked "Not For New Designs." ESR (60 mOhm) and lifetime (5000 hours) are acceptable. Use only for legacy system maintenance or when other substitutes are unavailable.
UHE1V331MPD (Nichicon) - Marked "Not For New Designs." Extended lifetime (7000 hours) and moderate ESR (60 mOhm) are acceptable. REACH affected status requires compliance verification. Use only for legacy system maintenance.
35ZLK330M10X16 (Rubycon) - Marked "Last Time Buy." ESR (38 mOhm) and lifetime (5000 hours) are acceptable. Limited inventory (1800 pcs). Use only when other substitutes are unavailable.

Frequently Asked Questions (FAQ)

Q: Can I substitute ESW337M035AH2AA with a part having different capacitance or voltage rating?

A: No. Capacitance and voltage rating are critical electrical parameters. Any deviation will alter circuit behavior and may cause circuit malfunction or component failure. Only parts rated 330 µF at 35 V are acceptable substitutes.

Q: What is the significance of ESR (Equivalent Series Resistance) in selecting a substitute?

A: ESR directly affects the capacitor's ability to handle ripple current. Lower ESR (35-45 mOhm) provides better ripple current performance and reduced heat generation. Higher ESR (105 mOhm) requires verification that the application's ripple current specification is not exceeded. ESR values between 35-118 mOhm are within acceptable range for this capacitance and voltage class.

Q: Does height variation affect compatibility?

A: Height variation (14.00 mm to 17.50 mm) is acceptable provided PCB clearance and component placement constraints are verified. Compact variants (14.00 mm) offer improved board layout flexibility. Taller variants (17.50 mm) require clearance verification above the component.

Q: Why are some parts marked "Not For New Designs"?

A: Parts marked "Not For New Designs" are in end-of-life status and may have limited future availability. These parts are acceptable for legacy system maintenance or repair but should not be specified for new product development. Active status parts are preferred for new designs.

Q: What is the difference between general-purpose and automotive-rated parts?

A: Automotive-rated parts (AEC-Q200) undergo additional qualification testing and typically feature extended operating temperature ranges (-55°C to 105°C versus -40°C to 105°C). Automotive-rated parts are acceptable substitutes for general-purpose applications and provide additional reliability margin.

Q: Can I use a substitute with longer lifetime rating?

A: Yes. A substitute with equal or longer lifetime rating (4000-10000 hours at 105°C) is acceptable and provides improved reliability margin. The ESW337M035AH2AA is rated 5000 hours; substitutes rated 6000, 7000, or 10000 hours are compatible.

Q: What does ROHS3 compliance mean?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. All listed substitutes maintain ROHS3 compliance for regulatory compatibility.

Q: Are lead spacing and diameter critical for substitution?

A: Yes. Lead spacing (5.00 mm) and diameter (10.00 mm) are critical for PCB footprint compatibility. All listed substitutes maintain identical lead spacing and diameter to ensure direct PCB compatibility without layout modification.

Q: What inventory considerations should guide my selection?

A: Inventory availability varies significantly among substitutes. B41858C7337M000 offers highest availability (16072 pcs), while 35ZLK330M10X16 offers limited inventory (1800 pcs). For high-volume production, verify substitute availability with your supplier before design finalization.

Q: Can I mix different substitute parts in the same circuit board?

A: Yes, provided all substitutes meet the critical matching parameters (capacitance, voltage, tolerance, polarization, package type, lead spacing, mounting type). Mixing substitutes with different ESR or lifetime ratings is acceptable within the same circuit, though consistent sourcing is recommended for manufacturing simplicity.

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