DLR1S47K-F Equivalent & Substitute Parts Reference

Part Overview

The DLR1S47K-F is a 0.047 µF polyester film capacitor manufactured by Cornell Dubilier Electronics (CDE), rated for 100V DC operation with ±10% tolerance. This component is classified as obsolete, though 1078 pieces remain in current inventory. The DLR series represents an earlier generation of radial film capacitors designed for general-purpose applications in through-hole PCB assemblies.

Due to the obsolete status of the DLR1S47K-F, equivalent substitute parts from active product lines are necessary for new designs, production continuity, and long-term component availability. The substitute parts listed maintain the core electrical specifications while offering improved performance characteristics, extended temperature ranges, and active manufacturing status.

Key Parameters

Parameter	Value	Significance for Substitution
Capacitance	0.047 µF	Must match exactly
Voltage Rating (DC)	100V	Substitute must meet or exceed
Voltage Rating (AC)	63V	Substitute must meet or exceed
Tolerance	±10%	Substitute tolerance must be equal or tighter
Dielectric Material	Polyester	Must be polyester or metallized polyester
Mounting Type	Through Hole Radial	Must match for PCB compatibility
Lead Spacing	0.197" (5.00mm)	Must match for footprint compatibility
Operating Temperature	-40°C to +85°C	Substitute range should encompass or exceed
RoHS Status	ROHS3 Compliant	Must maintain compliance

Substitute Part Grouping Explanation

Substitution logic for the DLR1S47K-F is based on strict electrical and mechanical compatibility criteria:

Primary Substitution Criteria:

Capacitance value must be exactly 0.047 µF
DC voltage rating must be 100V or higher
AC voltage rating must be 63V or higher
Tolerance must be ±10% or tighter (±5% acceptable)
Dielectric material must be polyester or metallized polyester
Mounting configuration must be through-hole radial
Lead spacing must be 0.197" (5.00mm)
Operating temperature range must encompass -40°C to +85°C minimum

Substitute Parts Grouped by Voltage Rating:

Group 1: 100V DC Rated Substitutes (Direct Voltage Match)

168473J100C-F (±5% tolerance, metallized polyester, -55°C to +125°C)
168473K100C-F (±10% tolerance, metallized polyester, -55°C to +125°C)
185473J100RCA-F (±5% tolerance, metallized polyester, tape & reel, -55°C to +125°C)
185473J100RCB-F (±5% tolerance, metallized polyester, tape & reel, -55°C to +125°C)
185473K100RCA-F (±10% tolerance, metallized polyester, tape & reel, -55°C to +125°C)

Group 2: 250V DC Rated Substitutes (Voltage Upgrade)

168473J250F-F (±5% tolerance, metallized polyester, -55°C to +125°C)
168473K250F-F (±10% tolerance, metallized polyester, -55°C to +125°C)
185473J250AFB-F (±5% tolerance, metallized polyester, tape & reel, -55°C to +125°C)
185473J250RFA-F (±5% tolerance, metallized polyester, tape & reel, -55°C to +125°C)
185473J250RFB-F (±5% tolerance, metallized polyester, tape & reel, -55°C to +125°C)

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and REACH unaffected status. Packaging options include bulk and tape & reel configurations to accommodate different assembly requirements.

Parameter Comparison

Parameter	DLR1S47K-F (Main)	168473J100C-F	168473K100C-F	168473J250F-F	168473K250F-F	185473J100RCA-F	185473K100RCA-F	185473J250RFA-F
Capacitance	0.047 µF	0.047 µF	0.047 µF	0.047 µF	0.047 µF	0.047 µF	0.047 µF	0.047 µF
Tolerance	±10%	±5%	±10%	±5%	±10%	±5%	±10%	±5%
Voltage DC	100V	100V	100V	250V	250V	100V	100V	250V
Voltage AC	63V	63V	63V	160V	160V	63V	63V	160V
Dielectric	Polyester	Polyester, Metallized	Polyester, Metallized	Polyester, Metallized	Polyester, Metallized	Polyester, Metallized	Polyester, Metallized	Polyester, Metallized
Temperature Range	-40°C to +85°C	-55°C to +125°C	-55°C to +125°C	-55°C to +125°C	-55°C to +125°C	-55°C to +125°C	-55°C to +125°C	-55°C to +125°C
Mounting Type	Through Hole Radial	Through Hole Radial	Through Hole Radial	Through Hole Radial	Through Hole Radial	Through Hole Radial	Through Hole Radial	Through Hole Radial
Lead Spacing	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)
Size (L x W)	0.374" x 0.197" (9.50mm x 5.00mm)	0.283" x 0.098" (7.20mm x 2.50mm)	0.283" x 0.098" (7.20mm x 2.50mm)	0.283" x 0.177" (7.20mm x 4.50mm)	0.283" x 0.177" (7.20mm x 4.50mm)	0.283" x 0.098" (7.20mm x 2.50mm)	0.283" x 0.098" (7.20mm x 2.50mm)	0.283" x 0.177" (7.20mm x 4.50mm)
Height (Max)	0.472" (12.00mm)	0.256" (6.50mm)	0.256" (6.50mm)	0.374" (9.50mm)	0.374" (9.50mm)	0.256" (6.50mm)	0.256" (6.50mm)	0.374" (9.50mm)
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (100V DC Applications):

Select from Group 1 substitutes when the application circuit operates at 100V DC or lower. The 168473K100C-F offers the closest electrical match to the DLR1S47K-F, maintaining ±10% tolerance while providing metallized polyester construction and extended temperature range (-55°C to +125°C). This part is available in bulk packaging with 642 pieces in stock.

For applications requiring tighter tolerance control, the 168473J100C-F provides ±5% tolerance with identical voltage and temperature specifications. This part has higher inventory availability (2609 pieces).

For Tape & Reel Packaging:

The 185473K100RCA-F and 185473J100RCB-F series provide equivalent electrical performance in tape & reel format, suitable for automated assembly processes. These parts maintain all electrical specifications while offering packaging flexibility for high-volume production.

For Voltage-Upgraded Applications:

When circuit design permits higher voltage operation, Group 2 substitutes (250V DC rated) provide enhanced safety margins and improved reliability. The 168473K250F-F maintains ±10% tolerance with 250V DC rating and 1128 pieces in stock. The 168473J250F-F offers ±5% tolerance with 745 pieces available.

Compliance and Certification:

All substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with modern manufacturing processes and environmental regulations. REACH unaffected status applies uniformly across all alternatives.

Physical Footprint Considerations:

Substitute parts exhibit reduced physical dimensions compared to the DLR1S47K-F. The 100V-rated substitutes measure 0.283" x 0.098" (7.20mm x 2.50mm) with 0.256" maximum height, compared to the original 0.374" x 0.197" (9.50mm x 5.00mm) with 0.472" height. The 250V-rated substitutes measure 0.283" x 0.177" (7.20mm x 4.50mm) with 0.374" maximum height. PCB layout modifications may be required to accommodate these dimensional changes.

Frequently Asked Questions (FAQ)

Q: Can the DLR1S47K-F be directly replaced with any of the listed substitutes?

A: Direct replacement is possible only if the application circuit operates at 100V DC or lower and the physical dimensions can accommodate the smaller substitute packages. All Group 1 substitutes (100V DC rated) maintain electrical compatibility with the original part. Physical footprint verification is required before PCB assembly.

Q: What is the difference between the 168473J100C-F and 168473K100C-F?

A: Both parts are identical in electrical specifications (0.047 µF, 100V DC, 63V AC, -55°C to +125°C) and physical dimensions. The primary difference is tolerance: 168473J100C-F provides ±5% tolerance, while 168473K100C-F provides ±10% tolerance matching the original DLR1S47K-F. Selection depends on circuit tolerance requirements.

Q: Why are the substitute parts smaller than the original DLR1S47K-F?

A: The substitute parts utilize metallized polyester film construction, which provides superior performance characteristics and allows for more compact packaging compared to the non-metallized polyester used in the DLR series. This represents an advancement in capacitor technology while maintaining electrical equivalence.

Q: Can I use a 250V DC rated substitute in a 100V DC circuit?

A: Yes. The 250V DC rated substitutes (Group 2) are fully compatible with 100V DC applications. Higher voltage ratings provide additional safety margin and do not negatively impact circuit performance. This approach is acceptable for new designs and retrofit applications.

Q: What is the difference between bulk and tape & reel packaging options?

A: Bulk packaging (168 and 185 series without RCA/RCB/RFA/RFB designations) is suitable for manual assembly and small-volume production. Tape & reel packaging (185 series with RCA/RCB/RFA/RFB designations) is optimized for automated pick-and-place assembly equipment. Electrical specifications are identical; packaging selection depends on assembly process requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring compatibility with current environmental regulations and manufacturing standards.

Q: What is MSL Level 1 and why does it matter?

A: MSL (Moisture Sensitivity Level) Level 1 indicates unlimited shelf life without moisture control requirements. All substitute parts carry this rating, eliminating the need for special storage conditions or baking procedures prior to assembly.

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

A: Yes, provided all selected parts meet the circuit's electrical requirements (voltage, capacitance, tolerance). Mixing parts from Group 1 (100V) and Group 2 (250V) is acceptable if different circuit sections operate at different voltage levels. Ensure lead spacing (0.197" / 5.00mm) matches PCB footprints uniformly.

Q: What is the lead time for these substitute parts?

A: Current inventory levels are provided in the part specifications. 168473J100C-F has the highest availability (2609 pieces), followed by 168473K250F-F (1128 pieces) and 185473J100RCA-F (1100 pieces). Consult with the supplier for lead time information beyond current stock.

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