DSF100J334 Film Capacitor - Equivalent & Substitute Parts

Part Overview

The DSF100J334 is a 0.33 µF film capacitor rated for 100V DC operation, manufactured by Cornell Dubilier Electronics (CDE) in the DSF series. This component features polyester metallized-stacked dielectric construction with radial through-hole mounting, designed for general-purpose applications across an operating temperature range of -40°C to 85°C.

The DSF100J334 carries an obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for systems utilizing this component.

Key Parameters

Parameter	Value
Capacitance	0.33 µF
Tolerance	±5%
Voltage Rating - DC	100V
Dielectric Material	Polyester, Metallized
Operating Temperature Range	-40°C ~ 85°C
Mounting Type	Through Hole
Package / Case	Radial
Lead Spacing	0.295" (7.50mm)
Termination	PC Pins
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the DSF100J334 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Electrical Parameters:

Capacitance value: 0.33 µF (exact match required)
Tolerance: ±5% (exact match required)
Voltage Rating - DC: 100V (minimum requirement; higher ratings are acceptable)
Dielectric material: Polyester, Metallized (core technology match)

Mechanical Parameters:

Mounting type: Through Hole (exact match required)
Package / Case: Radial (exact match required)
Lead spacing: 0.295" (7.50mm) (exact match required for PCB compatibility)
Termination: PC Pins (exact match required)

Compliance Parameters:

RoHS3 Compliant status (required for regulatory alignment)

The substitute parts listed below satisfy all critical electrical, mechanical, and compliance requirements. Physical dimensions may vary within acceptable tolerances for through-hole radial components, provided lead spacing remains constant.

Parameter Comparison

Parameter	DSF100J334 (Main)	167334J100C-F (CDE)	B32520C1334J000 (EPCOS - TDK)
Manufacturer	Cornell Dubilier Electronics	Cornell Dubilier Electronics	EPCOS - TDK Electronics
Series	DSF	167	B3252* - MKT General Purpose
Product Status	Obsolete	Active	Active
Capacitance	0.33 µF	0.33 µF	0.33 µF
Tolerance	±5%	±5%	±5%
Voltage Rating - DC	100V	100V	100V
Voltage Rating - AC	—	63V	63V
Dielectric Material	Polyester, Metallized - Stacked	Polyester, Metallized	Polyester, Polyethylene Terephthalate (PET), Metallized - Stacked
Operating Temperature Range	-40°C ~ 85°C	-55°C ~ 125°C	-55°C ~ 125°C
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	Radial	Radial	Radial
Size / Dimension (L x W)	0.402" x 0.189" (10.20mm x 4.80mm)	0.413" x 0.197" (10.50mm x 5.00mm)	0.394" x 0.157" (10.00mm x 4.00mm)
Height - Seated (Max)	0.433" (11.00mm)	0.433" (11.00mm)	0.335" (8.50mm)
Lead Spacing	0.295" (7.50mm)	0.295" (7.50mm)	0.295" (7.50mm)
Termination	PC Pins	PC Pins	PC Pins
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	Not Applicable	1 (Unlimited)	Not Applicable
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

167334J100C-F (Cornell Dubilier Electronics - Active Status)

This substitute maintains manufacturer continuity with the original DSF100J334, originating from the same manufacturer. The 167 series is currently in active production status, ensuring long-term availability and supply chain stability. The component meets all critical electrical and mechanical parameters, with an expanded operating temperature range (-55°C ~ 125°C) that exceeds the original specification. RoHS3 compliance and REACH unaffected status align with current regulatory requirements. MSL rating of 1 (Unlimited) indicates minimal moisture sensitivity, suitable for standard storage and handling conditions.

B32520C1334J000 (EPCOS - TDK Electronics - Active Status)

This substitute represents the EPCOS MKT general-purpose film capacitor series, currently in active production. The component satisfies all critical electrical specifications and maintains identical lead spacing for direct PCB compatibility. The expanded operating temperature range (-55°C ~ 125°C) provides enhanced thermal performance. Physical dimensions are more compact (height 8.50mm versus 11.00mm), which may offer space advantages in constrained layouts while maintaining full electrical equivalence. AEC-Q200 automotive qualification and RoHS3 compliance support applications requiring enhanced reliability standards. This option provides the highest inventory availability (57,810 units in stock) among substitute options.

Both substitute parts are suitable for direct replacement of the obsolete DSF100J334 in applications requiring 0.33 µF, 100V DC film capacitors with radial through-hole mounting.

Frequently Asked Questions (FAQ)

Q: Can the 167334J100C-F be used as a direct replacement for the DSF100J334?

A: Yes. Both components share identical capacitance (0.33 µF), tolerance (±5%), DC voltage rating (100V), lead spacing (0.295" / 7.50mm), and mounting configuration (radial through-hole). The 167334J100C-F is manufactured by the same company (Cornell Dubilier Electronics) and carries active product status, ensuring continued availability.

Q: What is the advantage of the B32520C1334J000 over the 167334J100C-F?

A: The B32520C1334J000 offers significantly higher inventory availability (57,810 units versus 1,924 units) and a more compact physical profile (8.50mm height versus 11.00mm). Both components meet all electrical and mechanical requirements. The B32520C1334J000 carries AEC-Q200 automotive qualification, which may be relevant for applications requiring enhanced reliability standards.

Q: Will the substitute parts fit in the same PCB footprint as the DSF100J334?

A: Yes, for lead spacing compatibility. All substitute parts maintain the 0.295" (7.50mm) lead spacing, ensuring compatibility with existing through-hole PCB layouts. Physical dimensions (length and width) vary slightly between parts, but these variations are within acceptable tolerances for radial component mounting. Verify available board space for the maximum seated height of each substitute (11.00mm for 167334J100C-F; 8.50mm for B32520C1334J000).

Q: Are the substitute parts RoHS compliant?

A: Yes. Both 167334J100C-F and B32520C1334J000 carry ROHS3 Compliant status and are REACH Unaffected, meeting current environmental and regulatory requirements.

Q: What is the operating temperature range for each substitute?

A: The DSF100J334 operates from -40°C to 85°C. Both substitute parts extend this range to -55°C to 125°C, providing enhanced thermal performance and broader application flexibility.

Q: Can I use these substitutes in automotive applications?

A: The B32520C1334J000 carries AEC-Q200 automotive qualification, making it suitable for automotive applications. The 167334J100C-F does not carry automotive qualification; verify application requirements before selection.

Q: What is the difference between "Polyester, Metallized - Stacked" and "Polyester, Metallized"?

A: Both designations refer to polyester film dielectric with metallized electrodes. The "Stacked" designation indicates a specific internal construction method. All three parts use polyester-based dielectric materials and are electrically equivalent for the specified parameters.

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