MH1608-101T Ferrite Bead Equivalent & Substitute Parts

Part Overview

The MH1608-101T is a 0603 (1608 Metric) surface mount ferrite bead manufactured by Bourns Inc. This component functions as a power and signal line filter element, rated for 100 Ohms impedance at 100 MHz with a maximum current capacity of 3A and 40mOhm DC resistance. The part is active in production status and RoHS3 compliant.

Equivalent and substitute parts are identified when design requirements permit variations in impedance, current rating, or DC resistance while maintaining the same package form factor, mounting type, and operating temperature range. Substitute parts enable procurement flexibility, alternative sourcing, and inventory optimization.

Key Parameters

Parameter	Value
Manufacturer Part Number	MH1608-101T
Manufacturer	Bourns Inc.
Package / Case	0603 (1608 Metric)
Mounting Type	Surface Mount
Impedance @ Frequency	100 Ohms @ 100 MHz
Current Rating (Max)	3A
DC Resistance (DCR) (Max)	40mOhm
Operating Temperature	-55°C ~ 125°C
Number of Lines	1
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitution of the MH1608-101T is determined by the following criteria:

Primary Substitution Criteria:

Package / Case: 0603 (1608 Metric)
Mounting Type: Surface Mount
Number of Lines: 1
Operating Temperature Range: -55°C ~ 125°C
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Secondary Substitution Parameters (Allowable Variation):

Impedance @ 100 MHz: 80 to 120 Ohms
Current Rating (Max): 3A or greater
DC Resistance (DCR) (Max): 20 to 40mOhm

Substitute parts are grouped into two categories:

Category 1: Parametric Equivalents (Identical Impedance) Parts with 100 Ohms @ 100 MHz impedance matching the primary specification. These include the MH1608-101Y (Bourns), BLM18KG101TN1D (Murata), and BLM18SP101SN1D (Murata).

Category 2: Near-Equivalent Impedance (80-120 Ohms) Parts with impedance values within ±20 Ohms of the primary specification. These include the MH1608-800T (80 Ohms), 74279228111 (110 Ohms), BBHV00160808121Y00 (120 Ohms), BBUP00160805121Y00 (120 Ohms), BBUP00160808121Y00 (120 Ohms), BLM18KG121TN1D (120 Ohms), and BLM18SG121TN1D (120 Ohms).

All substitute parts maintain the same package footprint, mounting method, temperature range, and compliance certifications as the primary part.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Impedance @ 100 MHz	Current Rating (Max)	DCR (Max)	Package / Case	Height (Max)	Operating Temperature	RoHS Status
MH1608-101T	Bourns Inc.	100 Ohms	3A	40mOhm	0603 (1608 Metric)	0.039" (1.00mm)	-55°C ~ 125°C	ROHS3 Compliant
MH1608-101Y	Bourns Inc.	100 Ohms	3A	40mOhm	0603 (1608 Metric)	0.039" (1.00mm)	-55°C ~ 125°C	ROHS3 Compliant
MH1608-800T	Bourns Inc.	80 Ohms	3A	40mOhm	0603 (1608 Metric)	0.039" (1.00mm)	-55°C ~ 125°C	ROHS3 Compliant
74279228111	Würth Elektronik	110 Ohms	4.1A	20mOhm	0603 (1608 Metric)	0.039" (1.00mm)	-55°C ~ 125°C	ROHS3 Compliant
BBHV00160808121Y00	Pulse Electronics	120 Ohms	3A	40mOhm	0603 (1608 Metric)	0.037" (0.95mm)	-55°C ~ 125°C	ROHS3 Compliant
BBUP00160805121Y00	Pulse Electronics	120 Ohms	3A	25mOhm	0603 (1608 Metric)	0.026" (0.65mm)	-55°C ~ 125°C	ROHS3 Compliant
BBUP00160808121Y00	Pulse Electronics	120 Ohms	3A	30mOhm	0603 (1608 Metric)	0.037" (0.95mm)	-55°C ~ 125°C	ROHS3 Compliant
BLM18KG101TN1D	Murata Electronics	100 Ohms	3A	30mOhm	0603 (1608 Metric)	0.030" (0.75mm)	-55°C ~ 125°C	ROHS3 Compliant
BLM18KG121TN1D	Murata Electronics	120 Ohms	3A	30mOhm	0603 (1608 Metric)	0.030" (0.75mm)	-55°C ~ 125°C	ROHS3 Compliant
BLM18SG121TN1D	Murata Electronics	120 Ohms	3A	25mOhm	0603 (1608 Metric)	0.026" (0.65mm)	-55°C ~ 125°C	ROHS3 Compliant
BLM18SP101SN1D	Murata Electronics	100 Ohms	3.7A	22mOhm	0603 (1608 Metric)	0.037" (0.95mm)	-55°C ~ 125°C	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalent Selection:

The MH1608-101Y (Bourns Inc.) is a direct parametric equivalent to the MH1608-101T. Both parts share identical impedance (100 Ohms @ 100 MHz), current rating (3A), DC resistance (40mOhm), package form factor, and operating temperature range. Both are active production parts with ROHS3 compliance and MSL 1 rating. Selection between these two Bourns variants depends on packaging preference (Tape & Reel for both) and inventory availability.

Identical Impedance Alternatives:

The BLM18KG101TN1D and BLM18SP101SN1D (Murata Electronics) provide 100 Ohms @ 100 MHz impedance matching. The BLM18KG101TN1D offers 30mOhm DCR with 3A current rating and reduced height (0.030"). The BLM18SP101SN1D provides enhanced current capacity (3.7A) with lower DCR (22mOhm) and is available in Tape & Reel packaging. Both are active production parts with full compliance certifications.

Near-Equivalent Impedance Selection:

The MH1608-800T (Bourns Inc.) provides 80 Ohms @ 100 MHz impedance, representing a 20% reduction from the primary specification. This part maintains identical current rating, DCR, package, and temperature range. Selection is appropriate when circuit design permits lower impedance filtering.

The 74279228111 (Würth Elektronik) offers 110 Ohms @ 100 MHz with enhanced current capacity (4.1A) and reduced DCR (20mOhm). This part is suitable for applications requiring higher current handling with minimal impedance deviation.

The BBHV00160808121Y00, BBUP00160805121Y00, BBUP00160808121Y00 (Pulse Electronics) and BLM18KG121TN1D, BLM18SG121TN1D (Murata Electronics) provide 120 Ohms @ 100 MHz impedance, representing a 20% increase from the primary specification. These parts maintain 3A current rating and are suitable for applications requiring higher impedance filtering. DCR values range from 25mOhm to 40mOhm. Height variations exist across these options, with some providing reduced profile (0.026" to 0.030") compared to the primary part (0.039").

All substitute parts maintain active production status, ROHS3 compliance, and MSL 1 rating, ensuring long-term availability and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can the MH1608-101Y be used as a direct replacement for the MH1608-101T?

A: Yes. The MH1608-101Y is a parametric equivalent with identical impedance (100 Ohms @ 100 MHz), current rating (3A), DC resistance (40mOhm), package form factor (0603), and operating temperature range (-55°C ~ 125°C). Both parts are manufactured by Bourns Inc. and carry ROHS3 compliance and MSL 1 rating.

Q: What is the impedance tolerance range for acceptable substitution?

A: Substitute parts with impedance values between 80 Ohms and 120 Ohms @ 100 MHz are provided in this reference. The MH1608-800T operates at 80 Ohms (20% below primary specification), while multiple parts operate at 110 to 120 Ohms (10-20% above primary specification). Circuit design requirements determine acceptable impedance deviation.

Q: Are all substitute parts available in the same package form factor?

A: Yes. All substitute parts listed are packaged in 0603 (1608 Metric) form factor with surface mount mounting type, maintaining identical PCB footprint compatibility with the MH1608-101T.

Q: What is the difference between the Bourns MH series and Murata BLM series ferrite beads?

A: Both series provide equivalent impedance and current ratings in the 0603 package. The primary differences are manufacturer-specific design characteristics reflected in DC resistance values and height profiles. The Murata BLM18 series offers reduced height options (0.030" to 0.037") compared to the Bourns MH1608-101T (0.039"), which may be advantageous in space-constrained applications.

Q: Can I substitute a 120 Ohm ferrite bead for the 100 Ohm primary part?

A: Substitution depends on circuit design requirements. A 20% impedance increase may be acceptable in applications with impedance tolerance margins. The BBHV00160808121Y00, BBUP00160808121Y00, BLM18KG121TN1D, and BLM18SG121TN1D all provide 120 Ohms @ 100 MHz with equivalent current ratings and temperature ranges. Circuit simulation or testing is necessary to confirm performance in specific applications.

Q: What is the significance of DC resistance (DCR) variation among substitute parts?

A: DC resistance affects power dissipation and insertion loss at DC and low frequencies. The primary MH1608-101T specifies 40mOhm maximum DCR. Substitute parts range from 20mOhm (74279228111) to 40mOhm (MH1608-101Y, MH1608-800T, BBHV00160808121Y00). Lower DCR values reduce power loss and heat generation, beneficial in high-current applications. Selection depends on thermal and power budget requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this reference carry ROHS3 compliance certification and MSL 1 (Unlimited) moisture sensitivity rating, matching the primary MH1608-101T specifications.

Q: What packaging options are available for substitute parts?

A: Substitute parts are available in Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging formats. The MH1608-101T, MH1608-101Y, MH1608-800T, and Pulse Electronics parts are supplied in Tape & Reel. Würth Elektronik 74279228111 and Murata BLM series parts are available in Cut Tape & Digi-Reel® format. Packaging selection depends on assembly process requirements and volume specifications.

Q: Can the BLM18SP101SN1D be used in applications requiring higher current capacity?

A: Yes. The BLM18SP101SN1D provides 3.7A maximum current rating compared to the 3A rating of the primary MH1608-101T, with matching 100 Ohms @ 100 MHz impedance. This part is suitable for applications requiring enhanced current handling while maintaining identical impedance filtering characteristics.

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