DMT2P33K-F Equivalent & Substitute Parts Reference

Part Overview

The DMT2P33K-F is a 0.33 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) in the DMT series. This through-hole radial capacitor operates at 250V DC with ±10% tolerance and polyester metallized dielectric construction. The part is Active status with ROHS3 compliance and is suitable for general-purpose applications requiring stable capacitance across the operating temperature range of -55°C to 125°C. Substitute parts are identified to address inventory availability, packaging preferences, or specific application voltage requirements while maintaining core electrical specifications.

Key Parameters

Parameter	Value	Significance for Substitution
Capacitance	0.33 µF	Must match exactly
Tolerance	±10%	Must match exactly
Voltage Rating - DC	250V	Substitute must meet or exceed
Dielectric Material	Polyester, Metallized	Must match or be compatible
Mounting Type	Through Hole	Must match for PCB compatibility
Package / Case	Radial	Must match for mechanical fit
Operating Temperature	-55°C ~ 125°C	Substitute must cover or exceed range
RoHS Status	ROHS3 Compliant	Must maintain compliance

Substitute Part Grouping Explanation

Substitution logic is based on matching or exceeding the following critical parameters:

Mandatory Match Criteria:

Capacitance: 0.33 µF (exact)
Tolerance: ±10% (exact)
Mounting Type: Through Hole (exact)
Package / Case: Radial (exact)
Dielectric Material: Polyester, Metallized (exact or compatible variant)

Allowable Variation Criteria:

Voltage Rating - DC: Substitute must equal or exceed 250V
Voltage Rating - AC: Substitute must equal or exceed 125V
Operating Temperature Range: Substitute must cover -55°C to 125°C or provide equivalent thermal performance
Physical Dimensions: Variation permitted if PCB footprint accommodates lead spacing and height
RoHS Status: Must maintain ROHS3 compliance

All four substitute parts meet these criteria with variations in physical size, voltage rating, and thermal specifications as detailed in the comparison table.

Parameter Comparison

Parameter	DMT2P33K-F (Main)	160334K250G-F	DME2P33K-F	334MSR400K	B32522C3334K000
Manufacturer	Cornell Dubilier Electronics (CDE)	Cornell Dubilier Electronics (CDE)	Cornell Dubilier Electronics (CDE)	Cornell Dubilier / Illinois Capacitor	EPCOS - TDK Electronics
Series	DMT	160	DME	MSR	B3252* - MKT General Purpose
Capacitance	0.33 µF	0.33 µF	0.33 µF	0.33 µF	0.33 µF
Tolerance	±10%	±10%	±10%	±10%	±10%
Voltage Rating - AC	125V	160V	160V	200V	160V
Voltage Rating - DC	250V	250V	250V	400V	250V
Dielectric Material	Polyester, Metallized	Polyester, Metallized	Polyester, Metallized	Polyester, Metallized	Polyester, Polyethylene Terephthalate (PET), Metallized - Stacked
Operating Temperature	-55°C ~ 125°C	-55°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial	Radial	Radial	Radial	Radial
Size / Dimension (L x W)	0.945" x 0.492" (24.00mm x 12.50mm)	0.709" x 0.236" (18.00mm x 6.00mm)	0.492" x 0.276" (12.50mm x 7.00mm)	0.886" x 0.354" (22.50mm x 9.00mm)	0.709" x 0.197" (18.00mm x 5.00mm)
Height - Seated (Max)	0.783" (19.90mm)	0.472" (12.00mm)	0.532" (13.50mm)	0.591" (15.00mm)	0.413" (10.50mm)
Lead Spacing	0.795" (20.20mm)	0.591" (15.00mm)	0.394" (10.00mm)	0.787" (20.00mm)	0.591" (15.00mm)
Termination	PC Pins	PC Pins	PC Pins	PC Pins	PC Pins
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Substitution (Identical Electrical Performance):

The DME2P33K-F and 160334K250G-F are direct electrical equivalents to the DMT2P33K-F, maintaining identical capacitance, tolerance, DC voltage rating, and dielectric material. Both parts are Active status with ROHS3 compliance. Selection between these three CDE parts depends on PCB layout constraints due to dimensional differences. The DME2P33K-F offers the smallest footprint (12.50mm x 7.00mm, 10.00mm lead spacing) and highest inventory availability (2200 pcs). The 160334K250G-F provides a mid-size option (18.00mm x 6.00mm, 15.00mm lead spacing). The original DMT2P33K-F is the largest (24.00mm x 12.50mm, 20.20mm lead spacing).

Higher Voltage Alternative:

The 334MSR400K (400V DC rating) is suitable for applications requiring higher voltage margin or operating in elevated voltage environments. This part maintains identical capacitance, tolerance, and operating temperature range (-55°C to 125°C) while providing 60% additional voltage headroom. Physical dimensions (22.50mm x 9.00mm, 20.00mm lead spacing) are comparable to the main part. ROHS3 compliance is maintained.

Cross-Manufacturer Alternative:

The B32522C3334K000 from EPCOS - TDK Electronics is a cross-manufacturer substitute with identical electrical specifications (0.33 µF, ±10%, 250V DC). This part features a stacked metallized dielectric construction and includes AEC-Q200 automotive qualification. The smallest physical footprint (18.00mm x 5.00mm, 15.00mm lead spacing, 10.50mm height) makes it suitable for space-constrained applications. ROHS3 compliance is maintained.

Temperature Consideration:

The 160334K250G-F operates to 105°C maximum, which is 20°C below the main part and other substitutes. This part is suitable only for applications where the upper operating temperature does not exceed 105°C.

Frequently Asked Questions (FAQ)

Q: Can I use the DME2P33K-F as a direct replacement for the DMT2P33K-F?

A: Yes. Both parts share identical electrical specifications: 0.33 µF capacitance, ±10% tolerance, 250V DC rating, polyester metallized dielectric, and -55°C to 125°C operating range. The primary difference is physical size. The DME2P33K-F is significantly smaller (12.50mm x 7.00mm versus 24.00mm x 12.50mm) with tighter lead spacing (10.00mm versus 20.20mm). Verify PCB footprint compatibility before substitution.

Q: What is the difference between the 160334K250G-F and DME2P33K-F?

A: Both are CDE products with identical electrical ratings. The 160334K250G-F is mid-sized (18.00mm x 6.00mm, 15.00mm lead spacing) and operates to 105°C maximum. The DME2P33K-F is smallest (12.50mm x 7.00mm, 10.00mm lead spacing) and operates to 125°C. Choose based on available PCB space and thermal requirements.

Q: When should I use the 334MSR400K instead of the DMT2P33K-F?

A: Use the 334MSR400K when your application requires higher voltage margin or operates at elevated voltages. This part provides 400V DC rating versus 250V DC, offering 60% additional voltage headroom. Electrical performance and temperature range are identical. Physical size is comparable to the main part.

Q: Is the B32522C3334K000 suitable for automotive applications?

A: Yes. The B32522C3334K000 carries AEC-Q200 automotive qualification and is suitable for automotive-grade applications. It maintains identical electrical specifications to the main part and offers the smallest physical footprint (18.00mm x 5.00mm). This part is a cross-manufacturer option from EPCOS - TDK Electronics.

Q: What are the lead spacing differences, and why do they matter?

A: Lead spacing varies from 10.00mm (DME2P33K-F) to 20.20mm (DMT2P33K-F). Lead spacing determines PCB hole pattern compatibility. Verify your PCB design accommodates the selected part's lead spacing before ordering. Smaller lead spacing allows denser component placement but requires precise PCB layout.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, ensuring compatibility with regulatory requirements and environmental standards.

Q: Can I substitute the DMT2P33K-F with the 160334K250G-F if my circuit operates above 105°C?

A: No. The 160334K250G-F is rated to 105°C maximum, which is below the main part's 125°C rating. For applications requiring operation above 105°C, use the DME2P33K-F, 334MSR400K, or B32522C3334K000, all rated to 125°C.

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