Request Quote
(Ships tomorrow)
Z0603C751DSMST Ferrite Bead 750 Ohm 0603 Equivalent & Substitute Parts
Part Overview
The Z0603C751DSMST is a 750 Ohm ferrite bead manufactured by KEMET in the 0603 (1608 Metric) surface mount package. This single-line signal filtering component operates at 100 MHz impedance with a maximum current rating of 300mA and 600mOhm DC resistance. The part is classified as obsolete, making equivalent and substitute components necessary for ongoing design support and procurement.
Ferrite beads in this category function as electromagnetic interference (EMI) suppressors for signal line applications. The Z0603C751DSMST belongs to KEMET's Z-SMS series and meets ROHS3 compliance with unlimited moisture sensitivity rating (MSL 1).
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | Z0603C751DSMST |
| Manufacturer | KEMET |
| Package / Case | 0603 (1608 Metric) |
| Mounting Type | Surface Mount |
| Impedance @ Frequency | 750 Ohms @ 100 MHz |
| Current Rating (Max) | 300mA |
| DC Resistance (DCR) (Max) | 600mOhm |
| Operating Temperature | -55°C ~ 125°C |
| Filter Type | Signal Line |
| Number of Lines | 1 |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the Z0603C751DSMST is determined by the following critical parameters:
Mandatory Matching Parameters:
- 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)
Functional Parameters (Impedance-Based Grouping):
- Impedance @ 100 MHz: 750 Ohms (primary specification)
- Current Rating (Max): 300mA minimum
- DC Resistance (DCR) (Max): 600mOhm maximum
Substitute parts are grouped into two categories:
Category A - Direct Impedance Match (750 Ohms @ 100 MHz): Parts maintaining the exact 750 Ohm impedance specification with equal or superior current handling and lower DC resistance characteristics.
Category B - Functional Equivalent (600 Ohms @ 100 MHz): Parts with reduced impedance (600 Ohms) but enhanced current ratings and improved DC resistance performance. These provide alternative filtering characteristics suitable for applications where the lower impedance and higher current capacity are acceptable trade-offs.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Impedance @ 100 MHz | Current Rating (Max) | DC Resistance (Max) | Package | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|
| Z0603C751DSMST | KEMET | 750 Ohms | 300mA | 600mOhm | 0603 (1608 Metric) | Obsolete | ROHS3 Compliant |
| 742792656 | Würth Elektronik | 750 Ohms | 400mA | 350mOhm | 0603 (1608 Metric) | Active | ROHS3 Compliant |
| Z0603C601ESMST | KEMET | 600 Ohms | 300mA | 400mOhm | 0603 (1608 Metric) | Obsolete | ROHS3 Compliant |
| 2506036017Y0 | Fair-Rite Products Corp. | 600 Ohms | 400mA | 350mOhm | 0603 (1608 Metric) | Active | ROHS3 Compliant |
| 742863160 | Würth Elektronik | 600 Ohms | 500mA | 350mOhm | 0603 (1608 Metric) | Active | ROHS3 Compliant |
| BBBK00160808601Y00 | Pulse Electronics | 600 Ohms | 300mA | 500mOhm | 0603 (1608 Metric) | Active | ROHS3 Compliant |
| BBGK00160808601Y00 | Pulse Electronics | 600 Ohms | 400mA | 300mOhm | 0603 (1608 Metric) | Active | ROHS3 Compliant |
| BBSJ00160808601Y00 | Pulse Electronics | 600 Ohms | 400mA | 400mOhm | 0603 (1608 Metric) | Active | ROHS3 Compliant |
| BLM18AG601SN1D | Murata Electronics | 600 Ohms | 500mA | 380mOhm | 0603 (1608 Metric) | Active | ROHS3 Compliant |
| BLM18AG601SZ1D | Murata Electronics | 600 Ohms | 500mA | 380mOhm | 0603 (1608 Metric) | Active | ROHS3 Compliant |
| BLM18EG601SN1D | Murata Electronics | 600 Ohms | 500mA | 350mOhm | 0603 (1608 Metric) | Active | ROHS3 Compliant |
Engineering Selection Recommendations
Primary Substitute - Direct Impedance Match:
The Würth Elektronik 742792656 (WE-CBF series) is the primary substitute for the Z0603C751DSMST. This part maintains the 750 Ohm impedance specification at 100 MHz while providing superior electrical characteristics: 400mA current rating (33% higher than original) and 350mOhm DC resistance (42% lower than original). The part is active in production status, ensuring long-term availability. All compliance certifications (ROHS3, REACH Unaffected, MSL 1) match the original specification.
Secondary Substitutes - Functional Equivalents (600 Ohms @ 100 MHz):
When 750 Ohm impedance is not critical to circuit function, the following active parts provide enhanced performance characteristics:
-
Murata Electronics BLM18EG601SN1D (EMIFIL® series): Offers 500mA current rating with 350mOhm DC resistance. Extensive inventory availability (1,685,229 units) and active production status support long-term supply chain stability.
-
Würth Elektronik 742863160 (WE-CBF HF series): Provides 500mA current rating with 350mOhm DC resistance in Tape & Reel packaging. Active production status ensures component availability.
-
Fair-Rite Products Corp. 2506036017Y0: Delivers 400mA current rating with 350mOhm DC resistance. Active production status with substantial inventory (8,250 units).
All substitute parts maintain identical package dimensions (0603/1608 Metric), surface mount compatibility, operating temperature range (-55°C to 125°C), and regulatory compliance (ROHS3, REACH Unaffected, MSL 1).
Frequently Asked Questions (FAQ)
Q: Can the Würth Elektronik 742792656 be used as a direct replacement for the Z0603C751DSMST?
A: Yes. The 742792656 maintains the 750 Ohm impedance specification at 100 MHz with identical package dimensions (0603/1608 Metric), surface mount configuration, and operating temperature range. The part exceeds the original current rating (400mA vs. 300mA) and provides lower DC resistance (350mOhm vs. 600mOhm), making it a superior direct substitute.
Q: What is the difference between 750 Ohm and 600 Ohm ferrite beads in this package?
A: Impedance determines the frequency-dependent filtering characteristics. The 750 Ohm specification provides higher attenuation at 100 MHz compared to 600 Ohm parts. Selection between these impedance values depends on circuit EMI suppression requirements. Lower impedance (600 Ohms) typically allows higher current flow with reduced insertion loss.
Q: Are all substitute parts compatible with the original PCB layout?
A: Yes. All listed substitute parts share the identical 0603 (1608 Metric) package dimensions: 0.063" L x 0.031" W (1.60mm x 0.80mm) with maximum height of 0.037" (0.95mm). Surface mount footprints are interchangeable. Verify specific height tolerances if space constraints exist, as some manufacturers specify maximum heights up to 0.039" (1.00mm).
Q: What is the significance of the product status (Obsolete vs. Active)?
A: Obsolete parts have discontinued production and limited remaining inventory. Active parts are in current production with assured long-term availability. For new designs or long-term production requirements, active substitutes are recommended to avoid future supply chain disruptions.
Q: How do DC resistance differences affect circuit performance?
A: DC resistance (DCR) represents insertion loss in the signal path. Lower DCR values reduce signal attenuation and heat generation. The original Z0603C751DSMST specifies 600mOhm maximum. Substitutes with 350mOhm DCR provide 42% lower insertion loss, beneficial for high-speed signal integrity applications.
Q: Are there packaging format differences between substitute parts?
A: Yes. The original Z0603C751DSMST is supplied in Cut Tape (CT) & Digi-Reel® format. Some substitutes are available in Tape & Reel (TR) format only. Verify packaging compatibility with assembly equipment specifications before procurement.
Q: Do all substitute parts meet the same regulatory compliance standards?
A: Yes. All listed substitute parts are ROHS3 Compliant, REACH Unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's compliance profile. ECCN classification (EAR99) and HTSUS code (8548.00.0000) are identical across all parts.
Q: What current rating should be selected for a new design?
A: Select a substitute with current rating equal to or exceeding the circuit's maximum signal current. The original 300mA rating is maintained by BBBK00160808601Y00 and Z0603C601ESMST. Higher-rated substitutes (400mA to 500mA) provide design margin and thermal headroom without performance degradation.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts