DLR1P33K-F Film Capacitor Equivalent & Substitute Parts

Part Overview

The DLR1P33K-F is a 0.33 µF polyester film capacitor rated for 100V DC operation, manufactured by Cornell Dubilier Electronics (CDE). This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design support and procurement. The part features radial through-hole mounting with ±10% capacitance tolerance and operates across a temperature range of -40°C to 85°C. Equivalent alternatives are available from active product lines within CDE and from other qualified manufacturers, offering improved availability and extended operational specifications.

Key Parameters

Parameter	Value	Unit
Capacitance	0.33	µF
Voltage Rating - DC	100	V
Voltage Rating - AC	63	V
Tolerance	±10%	-
Dielectric Material	Polyester	-
Operating Temperature Range	-40°C to 85°C	-
Mounting Type	Through Hole	-
Package / Case	Radial	-
Lead Spacing	0.394"	(10.00 mm)
Termination	PC Pins	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the DLR1P33K-F is determined by strict equivalence across the following critical parameters: capacitance value (0.33 µF), voltage rating (minimum 100V DC), dielectric material (polyester-based), mounting type (through-hole radial), and lead spacing (0.394" / 10.00 mm). All substitute parts maintain these core electrical and mechanical specifications.

The substitute parts are organized into two categories:

Direct Equivalents (Same Voltage Rating - 100V DC): Parts that maintain identical or superior voltage ratings at 100V DC with matching capacitance and tolerance specifications. These include 160334J100E-F, 160334K100E-F, B32521C1334J000, and BFC237221334.

Upgraded Equivalents (Higher Voltage Rating - 250V DC): Parts that exceed the original voltage specification, providing enhanced performance margin. These include DME2P33K-F, B32521C3334J000, and QXK2E334KTP. These upgrades are electrically compatible and physically interchangeable while offering superior voltage headroom.

All substitute parts are ROHS3 compliant and maintain PC pin termination with 0.394" lead spacing for direct board-level compatibility.

Parameter Comparison

Part Number	Manufacturer	Capacitance (µF)	Voltage DC (V)	Voltage AC (V)	Tolerance	Dielectric	Temp Range (°C)	Package	Lead Spacing (mm)	Status
DLR1P33K-F	CDE	0.33	100	63	±10%	Polyester	-40 to 85	Radial	10.00	Obsolete
160334J100E-F	CDE	0.33	100	63	±5%	Polyester, Metallized	-55 to 105	Radial	10.00	Active
160334K100E-F	CDE	0.33	100	63	±10%	Polyester, Metallized	-55 to 105	Radial	10.00	Active
DME2P33K-F	CDE	0.33	250	160	±10%	Polyester, Metallized	-55 to 125	Radial	10.00	Active
B32521C1334J000	EPCOS - TDK Electronics	0.33	100	63	±5%	Polyester, PET, Metallized - Stacked	-55 to 125	Radial	10.00	Active
B32521C3334J000	EPCOS - TDK Electronics	0.33	250	160	±5%	Polyester, PET, Metallized - Stacked	-55 to 125	Radial	10.00	Active
BFC237221334	Vishay Beyschlag/Draloric/BC Components	0.33	100	63	±10%	Polyester, Metallized	-55 to 105	Radial	10.00	Active
QXK2E334KTP	Nichicon	0.33	250	125	±10%	Polyester, Metallized	-40 to 105	Radial	10.00	Active

Engineering Selection Recommendations

For Direct Replacement (100V DC Applications):

The 160334K100E-F from CDE is the primary equivalent, offering identical capacitance, voltage rating, and tolerance specifications with active product status. This part maintains the same ±10% tolerance as the original DLR1P33K-F while providing extended temperature range (-55°C to 105°C) and improved dielectric construction (metallized polyester). The 160334J100E-F provides superior tolerance (±5%) at the same voltage rating for applications requiring tighter capacitance control.

The B32521C1334J000 from EPCOS - TDK Electronics is an active equivalent rated for automotive applications (AEC-Q200) with ±5% tolerance and extended temperature range (-55°C to 125°C). This part is suitable for designs requiring automotive-grade reliability.

The BFC237221334 from Vishay Beyschlag/Draloric/BC Components provides equivalent specifications with ±10% tolerance and long-life features, rated for -55°C to 105°C operation.

For Upgraded Performance (250V DC Applications):

The DME2P33K-F from CDE offers 2.5× voltage margin (250V DC) while maintaining identical capacitance and tolerance. This upgrade is recommended for applications subject to voltage transients or requiring enhanced safety margins.

The B32521C3334J000 from EPCOS - TDK Electronics provides 250V DC rating with ±5% tolerance and AEC-Q200 automotive qualification, suitable for demanding automotive environments.

The QXK2E334KTP from Nichicon delivers 250V DC rating with ±10% tolerance and extended temperature range (-40°C to 105°C), maintaining compatibility with the original operating temperature floor.

All substitute parts are ROHS3 compliant and maintain through-hole radial mounting with 0.394" lead spacing for direct PCB compatibility.

Frequently Asked Questions (FAQ)

Q: Can the DLR1P33K-F be directly replaced with 160334K100E-F?

A: Yes. Both parts share identical capacitance (0.33 µF), voltage rating (100V DC), tolerance (±10%), and lead spacing (10.00 mm). The 160334K100E-F is an active CDE product with extended temperature range and metallized dielectric construction, providing improved performance characteristics while maintaining full electrical and mechanical compatibility.

Q: What is the difference between direct equivalents and upgraded equivalents?

A: Direct equivalents (160334K100E-F, 160334J100E-F, B32521C1334J000, BFC237221334) maintain the 100V DC voltage rating of the original part. Upgraded equivalents (DME2P33K-F, B32521C3334J000, QXK2E334KTP) provide 250V DC rating, offering 2.5× voltage margin. Upgraded parts are electrically and mechanically interchangeable but provide enhanced voltage headroom for applications subject to transient overvoltages.

Q: Are all substitute parts physically interchangeable?

A: Yes. All substitute parts maintain radial through-hole mounting with 0.394" (10.00 mm) lead spacing and PC pin termination. Physical dimensions vary slightly between manufacturers, but all parts fit standard 10 mm lead spacing PCB layouts. Verify PCB clearance for parts with different height specifications before assembly.

Q: What is the significance of metallized dielectric construction?

A: Metallized polyester dielectrics offer self-healing properties and improved reliability compared to non-metallized film. All active substitute parts feature metallized construction, providing enhanced performance and extended operational life. This represents an improvement over the original DLR1P33K-F non-metallized design.

Q: Which substitute part offers the best tolerance specification?

A: The 160334J100E-F, B32521C1334J000, and B32521C3334J000 all provide ±5% tolerance, superior to the original ±10% specification. These parts are recommended for applications requiring tighter capacitance control and improved circuit performance.

Q: Are upgraded 250V parts suitable for 100V applications?

A: Yes. Upgraded 250V parts (DME2P33K-F, B32521C3334J000, QXK2E334KTP) are fully compatible with 100V DC circuits. The higher voltage rating provides additional safety margin and is electrically transparent to the application. No circuit modifications are required.

Q: What is the inventory status of substitute parts?

A: All substitute parts are active products with current inventory availability. The 160334K100E-F (707 units), 160334J100E-F (1470 units), B32521C1334J000 (5333 units), B32521C3334J000 (4987 units), DME2P33K-F (2200 units), BFC237221334 (805 units), and QXK2E334KTP (1336 units) are in stock as new original components.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component procurement.

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