CIS10P300AC Ferrite Bead 30 Ohm 0603 Equivalent & Substitute Parts

Part Overview

The CIS10P300AC is a power line ferrite bead manufactured by Samsung Electro-Mechanics, designed for electromagnetic interference (EMI) suppression in single-line applications. This component operates at 30 Ohms impedance at 100 MHz with a maximum current rating of 6A and is packaged in the 0603 (1608 Metric) surface mount form factor. The part is currently classified as obsolete, making equivalent and substitute components necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	CIS10P300AC
Manufacturer	Samsung Electro-Mechanics
Product Status	Obsolete
Filter Type	Power Line
Number of Lines	1
Impedance @ Frequency	30 Ohms @ 100 MHz
Current Rating (Max)	6A
DC Resistance (DCR) (Max)	10 mOhm
Operating Temperature Range	-55°C to 125°C
Package / Case	0603 (1608 Metric)
Mounting Type	Surface Mount
Height (Max)	0.037" (0.95 mm)
Size / Dimension	0.063" L x 0.032" W (1.60 mm x 0.80 mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution of the CIS10P300AC ferrite bead is determined by strict alignment of the following critical parameters:

Primary Matching Criteria:

Package / Case: 0603 (1608 Metric) surface mount form factor
Number of Lines: Single-line (1LN) configuration
Operating Temperature Range: -55°C to 125°C minimum
Mounting Type: Surface Mount
RoHS and REACH Compliance: ROHS3 Compliant, REACH Unaffected

Secondary Matching Criteria:

Impedance @ 100 MHz: 30 Ohms (exact match) or 26-33 Ohms (parametric equivalent range)
Current Rating: 6A minimum
DC Resistance: 10 mOhm maximum (exact match) or lower values acceptable
Filter Type: Power Line classification

Substitute parts are grouped into two categories:

Direct Equivalents (30 Ohms @ 100 MHz): Parts with identical impedance specification, suitable for direct replacement without circuit re-evaluation.

Parametric Equivalents (26-33 Ohms @ 100 MHz): Parts with impedance within ±10% of the original specification, meeting or exceeding current and thermal ratings, suitable for applications where impedance tolerance permits.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Impedance @ 100 MHz	Current Rating (Max)	DCR (Max)	Height (Max)	Product Status	Packaging
CIS10P300AC	Samsung Electro-Mechanics	30 Ohms	6A	10 mOhm	0.037" (0.95 mm)	Obsolete	-
MPZ1608S300ATAH0	TDK Corporation	30 Ohms	5A	10 mOhm	0.030" (0.75 mm)	Active	Cut Tape (CT) & Digi-Reel®
74279228260	Würth Elektronik	26 Ohms	6.5A	8 mOhm	0.039" (1.00 mm)	Active	Tape & Reel (TR)
BBUP00160805260Y00	Pulse Electronics	26 Ohms	6A	7 mOhm	0.026" (0.65 mm)	Active	Tape & Reel (TR)
BBUP00160805300Y00	Pulse Electronics	30 Ohms	6A	7 mOhm	0.026" (0.65 mm)	Active	Tape & Reel (TR)
BLM18KG260TN1D	Murata Electronics	26 Ohms	6A	7 mOhm	0.030" (0.75 mm)	Active	Cut Tape (CT) & Digi-Reel®
BLM18SG260TN1D	Murata Electronics	26 Ohms	6A	7 mOhm	0.026" (0.65 mm)	Active	Cut Tape (CT) & Digi-Reel®
BLM18SG330SN1D	Murata Electronics	33 Ohms	6A	8 mOhm	0.037" (0.95 mm)	Active	Cut Tape (CT) & Digi-Reel®
BLM18SP300SN1D	Murata Electronics	30 Ohms	6A	8 mOhm	0.037" (0.95 mm)	Active	Tape & Reel (TR)
FBU160808T-300Y-S-H	Cal-Chip Electronics, Inc.	30 Ohms	6A	8 mOhm	0.037" (0.95 mm)	Active	Tape & Reel (TR)
FBU160808T-330Y-S	Cal-Chip Electronics, Inc.	33 Ohms	6A	8 mOhm	0.037" (0.95 mm)	Active	Tape & Reel (TR)

Engineering Selection Recommendations

Direct Replacement (Identical Impedance - 30 Ohms @ 100 MHz):

The following parts are suitable for direct replacement of the CIS10P300AC without circuit modification:

BBUP00160805300Y00 (Pulse Electronics): Matches 30 Ohms impedance, 6A current rating, and provides lower DCR (7 mOhm vs. 10 mOhm). Active product status with Tape & Reel packaging. ROHS3 Compliant and REACH Unaffected.
BLM18SP300SN1D (Murata Electronics): Matches 30 Ohms impedance and 6A current rating. Active product status with Tape & Reel packaging. ROHS3 Compliant and REACH Unaffected. Inventory availability: 730 units.
FBU160808T-300Y-S-H (Cal-Chip Electronics, Inc.): Matches 30 Ohms impedance and 6A current rating. Active product status with Tape & Reel packaging. RoHS Compliant and REACH Unaffected. Inventory availability: 41,069 units.
MPZ1608S300ATAH0 (TDK Corporation): Matches 30 Ohms impedance and 10 mOhm DCR. Current rating is 5A (lower than original 6A). Active product status with Cut Tape & Digi-Reel® packaging. ROHS3 Compliant and REACH Unaffected. Inventory availability: 131,400 units.

Parametric Equivalent Substitutes (26-33 Ohms @ 100 MHz):

The following parts operate within ±10% impedance tolerance and meet or exceed current and thermal specifications:

74279228260 (Würth Elektronik): 26 Ohms impedance, 6.5A current rating (exceeds original), 8 mOhm DCR. Active product status. ROHS3 Compliant and REACH Unaffected.
BBUP00160805260Y00 (Pulse Electronics): 26 Ohms impedance, 6A current rating, 7 mOhm DCR. Active product status. ROHS3 Compliant and REACH Unaffected. Inventory availability: 60,493 units.
BLM18KG260TN1D (Murata Electronics): 26 Ohms impedance, 6A current rating, 7 mOhm DCR. Active product status with Cut Tape & Digi-Reel® packaging. ROHS3 Compliant and REACH Unaffected. Inventory availability: 308,044 units.
BLM18SG260TN1D (Murata Electronics): 26 Ohms impedance, 6A current rating, 7 mOhm DCR. Active product status with Cut Tape & Digi-Reel® packaging. ROHS3 Compliant and REACH Unaffected. Inventory availability: 849,975 units.
BLM18SG330SN1D (Murata Electronics): 33 Ohms impedance, 6A current rating, 8 mOhm DCR. Active product status. ROHS3 Compliant and REACH Unaffected. Inventory availability: 2,200 units.
FBU160808T-330Y-S (Cal-Chip Electronics, Inc.): 33 Ohms impedance, 6A current rating, 8 mOhm DCR. Active product status. RoHS Compliant and REACH Unaffected. Inventory availability: 40,991 units.

All substitute parts maintain the 0603 (1608 Metric) package form factor, single-line configuration, surface mount mounting type, and -55°C to 125°C operating temperature range of the original component.

Frequently Asked Questions (FAQ)

Q: Can I use a 26 Ohm ferrite bead in place of the 30 Ohm CIS10P300AC?

A: Yes, 26 Ohm ferrite beads are parametric equivalents within ±10% impedance tolerance. The 26 Ohm variants (BLM18KG260TN1D, BLM18SG260TN1D, BBUP00160805260Y00, 74279228260) meet or exceed the current rating and thermal specifications. Circuit performance will be minimally affected within typical EMI suppression applications. Verify impedance tolerance requirements for your specific application.

Q: Can I use a 33 Ohm ferrite bead in place of the 30 Ohm CIS10P300AC?

A: Yes, 33 Ohm ferrite beads are parametric equivalents within ±10% impedance tolerance. The 33 Ohm variants (BLM18SG330SN1D, FBU160808T-330Y-S) meet the current rating and thermal specifications. Circuit performance will be minimally affected within typical EMI suppression applications. Verify impedance tolerance requirements for your specific application.

Q: What is the difference between Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR) packaging?

A: Both packaging formats are suitable for automated assembly. Cut Tape & Digi-Reel® packaging is typically used for smaller order quantities and manual handling, while Tape & Reel packaging is optimized for high-volume automated pick-and-place equipment. Select packaging based on your manufacturing process requirements and order volume.

Q: Why does the MPZ1608S300ATAH0 have a lower current rating (5A) than the original CIS10P300AC (6A)?

A: The MPZ1608S300ATAH0 is rated for 5A maximum current, which is lower than the original 6A specification. This part is suitable for applications operating at or below 5A. For applications requiring the full 6A rating, select alternatives such as BBUP00160805300Y00, BLM18SP300SN1D, or FBU160808T-300Y-S-H.

Q: Are all substitute parts RoHS and REACH compliant?

A: All listed substitute parts are ROHS3 Compliant and REACH Unaffected, matching the compliance status of the original CIS10P300AC. This ensures compatibility with regulatory requirements for electronic component procurement.

Q: What is the significance of DC Resistance (DCR) in ferrite bead selection?

A: DC Resistance represents the resistive loss of the ferrite bead at direct current. Lower DCR values reduce power dissipation and heat generation. The original CIS10P300AC specifies 10 mOhm maximum DCR. Most substitute parts offer equal or lower DCR (7-8 mOhm), providing improved thermal performance.

Q: Can I substitute a single-line ferrite bead with a multi-line ferrite bead?

A: No. The CIS10P300AC is a single-line (1LN) ferrite bead designed for single-conductor EMI suppression. Multi-line ferrite beads have different electrical characteristics and physical configurations. Only single-line ferrite beads are suitable substitutes.

Q: What is the operating temperature range for all substitute parts?

A: All listed substitute parts operate across the -55°C to 125°C temperature range, matching the original CIS10P300AC specification. This ensures thermal compatibility across industrial and commercial applications.

Q: How do I determine which substitute part is best for my application?

A: Selection depends on three factors: (1) Impedance requirement—use direct 30 Ohm equivalents for exact matching, or 26-33 Ohm parametric equivalents if impedance tolerance permits; (2) Current requirement—ensure the substitute part current rating meets or exceeds your application's maximum current; (3) Availability and packaging—select based on your procurement lead time and manufacturing process (Cut Tape vs. Tape & Reel).

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