Equivalent & Substitute Parts for 185154K63RCA-F

Part Overview

The 185154K63RCA-F is a 0.15 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) in the 185 series. This radial polyester metallized capacitor operates at 63V DC with ±10% tolerance and is rated for -55°C to 125°C. The part is ROHS3 compliant and currently active in production with 785 units in stock.

Substitute parts are necessary when the original part becomes unavailable, when packaging requirements differ, when tighter tolerance specifications are required, or when higher voltage ratings are needed for circuit redesign.

Key Parameters

Parameter	Value	Substitution Relevance
Capacitance	0.15 µF	Must match exactly
Voltage Rating - DC	63V	Must equal or exceed
Tolerance	±10%	May be tightened (±5%)
Dielectric Material	Polyester, Metallized	Must match
Mounting Type	Through Hole Radial	Must match
Lead Spacing	0.197" (5.00mm)	Must match for PCB compatibility
Operating Temperature	-55°C ~ 125°C	Must meet or exceed range
RoHS Status	ROHS3 Compliant	Must maintain compliance

Substitute Part Grouping Explanation

Substitution logic for the 185154K63RCA-F is based on the following allowed parameters:

Critical Parameters (Must Match):

Capacitance: 0.15 µF
Dielectric: Polyester, Metallized
Mounting: Through Hole Radial
Lead Spacing: 0.197" (5.00mm)
Operating Temperature Range: -55°C ~ 125°C minimum

Flexible Parameters (May Vary):

Tolerance: ±10% (original) may be substituted with ±5% (tighter)
Voltage Rating - DC: 63V (original) may be substituted with 100V (higher)
Packaging: Tape & Reel (original) may be substituted with Bulk or Cut Tape
Physical Dimensions: Minor variations acceptable if lead spacing and mounting type remain constant
Manufacturer: CDE or EPCOS - TDK Electronics

Substitution Categories:

Category 1 - Direct Equivalent (Same Tolerance, Same Voltage):

B32529C0154K000 (EPCOS, Bulk packaging)
B32529C0154K289 (EPCOS, Cut Tape packaging)

Category 2 - Upgrade (Tighter Tolerance, Same Voltage):

168154J63C-F (CDE, ±5% tolerance, Bulk packaging)
B32529C0154J000 (EPCOS, ±5% tolerance, Bulk packaging)
B32529C0154J289 (EPCOS, ±5% tolerance, Cut Tape packaging)

Category 3 - Upgrade (Tighter Tolerance, Higher Voltage):

B32529C1154J000 (EPCOS, ±5% tolerance, 100V DC rating, Bulk packaging)

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage DC	Voltage AC	Dielectric	Lead Spacing	Packaging	Inventory	RoHS Status
185154K63RCA-F	CDE	0.15 µF	±10%	63V	40V	Polyester, Metallized	0.197" (5.00mm)	Tape & Reel	785 Pcs	ROHS3
168154J63C-F	CDE	0.15 µF	±5%	63V	40V	Polyester, Metallized	0.197" (5.00mm)	Bulk	5802 Pcs	ROHS3
B32529C0154K000	EPCOS - TDK	0.15 µF	±10%	63V	40V	Polyester, PET, Metallized - Stacked	0.197" (5.00mm)	Bulk	7462 Pcs	ROHS3
B32529C0154K289	EPCOS - TDK	0.15 µF	±10%	63V	40V	Polyester, PET, Metallized - Stacked	0.197" (5.00mm)	Cut Tape	13387 Pcs	ROHS3
B32529C0154J000	EPCOS - TDK	0.15 µF	±5%	63V	40V	Polyester, PET, Metallized - Stacked	0.197" (5.00mm)	Bulk	3779 Pcs	ROHS3
B32529C0154J289	EPCOS - TDK	0.15 µF	±5%	63V	40V	Polyester, PET, Metallized - Stacked	0.197" (5.00mm)	Cut Tape	11184 Pcs	ROHS3
B32529C1154J000	EPCOS - TDK	0.15 µF	±5%	100V	63V	Polyester, PET, Metallized - Stacked	0.197" (5.00mm)	Bulk	7732 Pcs	ROHS3

Engineering Selection Recommendations

For Direct Replacement (No Circuit Modification Required):

Select B32529C0154K000 or B32529C0154K289 when the original 185154K63RCA-F is unavailable. Both parts maintain identical electrical specifications (0.15 µF, ±10%, 63V DC) and mechanical compatibility (5.00mm lead spacing, through-hole radial mounting). The EPCOS B3252* series is AEC-Q200 rated for automotive applications. Choose K289 (Cut Tape) for automated assembly or K000 (Bulk) for manual assembly operations.

For Tolerance Upgrade (Improved Accuracy):

Select 168154J63C-F, B32529C0154J000, or B32529C0154J289 when circuit design requires tighter capacitance tolerance (±5% instead of ±10%). All three parts maintain 63V DC rating and 5.00mm lead spacing. The CDE 168154J63C-F provides same-manufacturer continuity. The EPCOS B32529C0154J series offers higher inventory availability and AEC-Q200 automotive qualification.

For Voltage Margin Upgrade:

Select B32529C1154J000 when circuit redesign or safety margin requirements demand higher voltage rating (100V DC instead of 63V DC). This part combines ±5% tolerance with 100V DC rating. Physical dimensions increase slightly (3.00mm width vs. 2.50mm), but lead spacing remains 5.00mm for PCB compatibility. AEC-Q200 rated.

Compliance Verification:

All substitute parts maintain ROHS3 compliance and REACH unaffected status. All parts operate across -55°C to 125°C temperature range. All parts use polyester dielectric material suitable for general-purpose and EMI/RFI suppression applications.

Frequently Asked Questions (FAQ)

Q: Can I substitute 185154K63RCA-F with B32529C0154K289 on my PCB?

A: Yes. Both parts have identical lead spacing (0.197" / 5.00mm), through-hole radial mounting, and 63V DC rating. The B32529C0154K289 is a direct electrical and mechanical equivalent. The only difference is packaging (Cut Tape vs. Tape & Reel) and manufacturer (EPCOS vs. CDE).

Q: What is the difference between ±10% and ±5% tolerance?

A: Tolerance specifies the allowable deviation from the nominal 0.15 µF capacitance value. ±10% allows 0.135 µF to 0.165 µF. ±5% allows 0.1425 µF to 0.1575 µF. Tighter tolerance (±5%) is suitable for precision circuits requiring more accurate capacitance values.

Q: Can I use B32529C1154J000 (100V) instead of the original 63V part?

A: Yes, from an electrical standpoint. The 100V rating provides additional voltage margin and is backward compatible with 63V circuits. However, physical dimensions change slightly (height and width increase). Verify PCB layout clearance before substitution. The part is suitable for applications requiring higher voltage headroom.

Q: Why do EPCOS parts have different physical dimensions than CDE parts?

A: Different manufacturers use different construction methods. CDE 185 series uses one stacking configuration; EPCOS B3252* series uses metallized stacked construction. Both achieve 0.15 µF capacitance at 63V, but internal geometry differs. Lead spacing (5.00mm) and mounting type (through-hole radial) remain identical for PCB compatibility.

Q: What packaging should I select: Bulk, Tape & Reel, or Cut Tape?

A: Tape & Reel (original) is standard for high-volume automated assembly. Bulk packaging is suitable for manual assembly or low-volume production. Cut Tape is intermediate, providing tape format for semi-automated handling. Electrical performance is identical across all packaging options.

Q: Are all substitute parts AEC-Q200 rated?

A: No. CDE 185 and 168 series parts do not list AEC-Q200 rating. EPCOS B3252* series parts are AEC-Q200 rated for automotive applications. If automotive qualification is required, select EPCOS B32529C series substitutes.

Q: Can I mix different substitute parts in the same circuit?

A: Yes, provided all parts meet the circuit's electrical requirements (0.15 µF, minimum 63V DC, -55°C to 125°C operation). Mixing manufacturers and tolerances is acceptable if circuit design accounts for tolerance stack-up across multiple capacitors.

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