AFK337M50H32B-F Equivalent & Substitute Parts

Part Overview

The AFK337M50H32B-F is a 330 µF, 50 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in a surface mount radial can package. This component is designed for automotive, bypass, and decoupling applications with AEC-Q200 automotive qualification. The part is currently discontinued at DiGi Electronics, necessitating identification of equivalent substitute components that maintain electrical and mechanical compatibility with existing designs.

Substiute Parts

AFK337M50H32B-F

Cornell Dubilier Electronics (CDE)In Stock: 1054AFK337M50H32B-F Datasheet

Current PartRFQ

EEE-FK1H331AQ

Panasonic Electronic ComponentsIn Stock: 12840EEE-FK1H331AQ Datasheet

DirectRFQ

EEV-FK1H331Q

Panasonic Electronic ComponentsIn Stock: 2039EEV-FK1H331Q Datasheet

DirectRFQ

EMVY500ARA331MKE0S

Chemi-ConIn Stock: 827810EMVY500ARA331MKE0S Datasheet

SimilarRFQ

MAL215099112E3

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 2738MAL215099112E3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AFK337M50H32B-F is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Capacitance: 330 µF (exact match)
• Voltage Rating: 50 V (exact match)
• Tolerance: ±20% (exact match)
• Lifetime: 5000 Hrs @ 105°C (exact match)
• Operating Temperature: -55°C to 105°C (exact match)
• Ripple Current Capability: 675 mA @ 120 Hz and 900 mA @ 100 kHz (exact match)

Mechanical Equivalence Requirements:

• Package Type: Radial, Can - SMD (exact match)
• Case Diameter: 0.492" (12.50 mm) (exact match)
• Case Height: 0.551" (14.00 mm) maximum (exact match or lower)
• Polarization: Polar (exact match)

Compliance Requirements:

• RoHS3 Compliant
• MSL Rating: 1 (Unlimited)

Substitute parts are classified as Direct Equivalents when all electrical and mechanical parameters match within specified tolerances. Parts with minor variations in non-critical parameters (such as surface mount land size or impedance) are classified as Similar Equivalents and require design verification for PCB layout compatibility.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent Substitutes (Panasonic FK Series):

The EEE-FK1H331AQ and EEV-FK1H331Q are direct electrical and mechanical equivalents to the AFK337M50H32B-F. Both parts maintain identical capacitance, voltage rating, tolerance, lifetime rating, operating temperature range, and ripple current specifications. The Panasonic FK series components are AEC-Q200 qualified for automotive applications and carry active product status with established supply availability. The EEE-FK1H331AQ is supplied in Tape & Reel packaging, while the EEV-FK1H331Q is supplied in Cut Tape & Digi-Reel format. Both are suitable for direct PCB layout substitution without design modification.

Similar Equivalent Substitutes (Chemi-Con and Vishay):

The EMVY500ARA331MKE0S (Chemi-Con Alchip™ MVY series) and MAL215099112E3 (Vishay 150 CRZ series) are similar equivalents with the following considerations:

The EMVY500ARA331MKE0S exhibits reduced ripple current capability (325 mA @ 120 Hz and 650 mA @ 100 kHz compared to 675 mA and 900 mA respectively) and a lower case height of 0.531" (13.50 mm) versus 0.551" (14.00 mm). The impedance is 110 mOhms, which is lower than the original 120 mOhms. This part does not carry AEC-Q200 automotive qualification.

The MAL215099112E3 (Vishay) maintains AEC-Q200 automotive qualification and identical case dimensions. However, the ripple current at 100 kHz is specified at 690 mA (lower than the original 900 mA), and impedance is 130 mOhms (higher than the original 120 mOhms). The ripple current at 120 Hz is not specified.

Both similar equivalents are suitable for general-purpose applications but require design verification for applications with high ripple current demands or strict automotive qualification requirements.

Recommended Selection Priority:

1. EEE-FK1H331AQ or EEV-FK1H331Q (Panasonic) for direct replacement in automotive and high-reliability applications
2. MAL215099112E3 (Vishay) for automotive applications where AEC-Q200 qualification is required
3. EMVY500ARA331MKE0S (Chemi-Con) for general-purpose applications where ripple current and automotive qualification are not critical

Frequently Asked Questions (FAQ)

Q: Can the EEE-FK1H331AQ or EEV-FK1H331Q be used as direct replacements for the AFK337M50H32B-F without PCB layout changes?

A: Yes. Both Panasonic FK series parts are direct electrical and mechanical equivalents. The case diameter (0.492" / 12.50 mm) and height (0.551" / 14.00 mm) are identical, and all electrical parameters match the original specification. No PCB layout modification is required.

Q: What is the difference between the EEE-FK1H331AQ and EEV-FK1H331Q?

A: Both parts are electrically and mechanically identical. The primary difference is packaging format: EEE-FK1H331AQ is supplied in Tape & Reel (TR) format, while EEV-FK1H331Q is supplied in Cut Tape (CT) & Digi-Reel format. Selection depends on assembly process requirements and order quantity.

Q: Why does the EMVY500ARA331MKE0S have lower ripple current specifications?

A: The Chemi-Con EMVY500ARA331MKE0S is rated for 325 mA @ 120 Hz and 650 mA @ 100 kHz, compared to 675 mA and 900 mA for the original part. This reflects different thermal and electrical design characteristics of the Chemi-Con component. Applications requiring the full ripple current capability of the original part should not use this substitute.

Q: Is the MAL215099112E3 suitable for automotive applications?

A: Yes. The Vishay MAL215099112E3 carries AEC-Q200 automotive qualification. However, the ripple current at 100 kHz is specified at 690 mA (lower than the original 900 mA), and impedance is 130 mOhms (higher than 120 mOhms). Design verification is required for applications with high ripple current demands.

Q: What does the case height difference mean for the EMVY500ARA331MKE0S?

A: The EMVY500ARA331MKE0S has a maximum seated height of 0.531" (13.50 mm) compared to 0.551" (14.00 mm) for the original part. This 0.020" (0.50 mm) reduction in height may affect PCB layout clearance in space-constrained designs. Verify clearance with surrounding components before substitution.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (EEE-FK1H331AQ, EEV-FK1H331Q, EMVY500ARA331MKE0S, and MAL215099112E3) are ROHS3 compliant with MSL Rating 1 (Unlimited), matching the original AFK337M50H32B-F specification.

Q: What is the impedance difference between the original and substitute parts?

A: The original AFK337M50H32B-F has 120 mOhm impedance @ 100 kHz. The Panasonic FK series parts maintain 120 mOhm impedance. The Chemi-Con EMVY500ARA331MKE0S has 110 mOhm impedance (lower), and the Vishay MAL215099112E3 has 130 mOhm impedance (higher). For applications sensitive to impedance characteristics, the Panasonic parts provide the closest match.

Q: Can I use the EMVY500ARA331MKE0S in an automotive application?

A: The EMVY500ARA331MKE0S does not carry AEC-Q200 automotive qualification. While the part meets the same electrical and mechanical specifications for capacitance, voltage, and temperature range, it is not qualified for automotive use. For automotive applications, use EEE-FK1H331AQ, EEV-FK1H331Q, or MAL215099112E3.