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Z1806C720APWST Equivalent & Substitute Parts
Part Overview
The Z1806C720APWST is a 72 Ohm power line ferrite bead manufactured by KEMET in the 1806 (4516 Metric) surface mount package. This component is rated for 6A maximum current with 7mOhm DC resistance and operates across the temperature range of -40°C to 125°C. The part is classified as Obsolete, necessitating identification of active equivalent alternatives for new procurement and ongoing production support.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Impedance @ Frequency | 72 Ohms @ 100 MHz |
| Current Rating (Max) | 6A |
| DC Resistance (DCR) (Max) | 7mOhm |
| Package / Case | 1806 (4516 Metric) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40°C ~ 125°C |
| Filter Type | Power Line |
| Number of Lines | 1 |
| Height (Max) | 0.051" (1.30mm) |
| Size / Dimension | 0.177" L x 0.063" W (4.50mm x 1.60mm) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the Z1806C720APWST is determined by strict equivalence across the following critical parameters:
- Impedance Specification: 72 Ohms @ 100 MHz (exact match required)
- Current Rating: 6A maximum (exact match required)
- DC Resistance: 7mOhm maximum (exact match required)
- Package Geometry: 1806 (4516 Metric) surface mount form factor (exact match required)
- Operating Temperature Range: -40°C to 125°C (exact match required)
- Filter Classification: Power Line ferrite bead, single line (exact match required)
- Regulatory Compliance: ROHS3 Compliant, REACH Unaffected, MSL 1 (exact match required)
All identified substitute parts meet these parameters without deviation. Packaging format variations (Cut Tape vs. Tape & Reel) do not affect electrical or mechanical compatibility and represent procurement format differences only.
Parameter Comparison
| Parameter | Z1806C720APWST (KEMET) | FBMJ4516HS720NT (Taiyo Yuden) | LBMCC451611T720NG (Taiyo Yuden) | LLMCC451611T720NG (Taiyo Yuden) | LMMCC451611T720NG (Taiyo Yuden) | LSMCC451611T720NG (Taiyo Yuden) |
|---|---|---|---|---|---|---|
| Impedance @ Frequency | 72 Ohms @ 100 MHz | 72 Ohms @ 100 MHz | 72 Ohms @ 100 MHz | 72 Ohms @ 100 MHz | 72 Ohms @ 100 MHz | 72 Ohms @ 100 MHz |
| Current Rating (Max) | 6A | 6A | 6A | 6A | 6A | 6A |
| DC Resistance (DCR) (Max) | 7mOhm | 7mOhm | 7mOhm | 7mOhm | 7mOhm | 7mOhm |
| Package / Case | 1806 (4516 Metric) | 1806 (4516 Metric) | 1806 (4516 Metric) | 1806 (4516 Metric) | 1806 (4516 Metric) | 1806 (4516 Metric) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Height (Max) | 0.051" (1.30mm) | 0.051" (1.30mm) | 0.051" (1.30mm) | 0.051" (1.30mm) | 0.051" (1.30mm) | 0.051" (1.30mm) |
| Size / Dimension | 0.177" L x 0.063" W (4.50mm x 1.60mm) | 0.177" L x 0.063" W (4.50mm x 1.60mm) | 0.177" L x 0.063" W (4.50mm x 1.60mm) | 0.177" L x 0.063" W (4.50mm x 1.60mm) | 0.177" L x 0.063" W (4.50mm x 1.60mm) | 0.177" L x 0.063" W (4.50mm x 1.60mm) |
| Operating Temperature Range | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C |
| Filter Type | Power Line | Power Line | Power Line | Power Line | Power Line | Power Line |
| Number of Lines | 1 | 1 | 1 | 1 | 1 | 1 |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Obsolete | Not For New Designs | Active | Active | Active | Active |
| Packaging Format | Cut Tape (CT) | Cut Tape (CT) & Digi-Reel® | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) |
Engineering Selection Recommendations
For New Designs and Production Continuation:
The LSMCC451611T720NG, LMMCC451611T720NG, LLMCC451611T720NG, and LBMCC451611T720NG are all classified as Active products and represent the primary substitution path for the obsolete Z1806C720APWST. These Taiyo Yuden components maintain full electrical and mechanical equivalence while offering ongoing manufacturing support and availability.
The LSMCC451611T720NG offers the highest inventory availability (6787 pieces) among active alternatives and is suitable for immediate procurement.
For Legacy System Support:
The FBMJ4516HS720NT (Taiyo Yuden FB series) provides an alternative with equivalent electrical specifications but carries a "Not For New Designs" status. This part is appropriate only for repair and maintenance of existing systems where component continuity is required.
All substitute parts maintain ROHS3 compliance, REACH Unaffected status, and MSL 1 rating, ensuring regulatory and environmental compatibility with the original specification.
Frequently Asked Questions (FAQ)
Q: Can LSMCC451611T720NG be used as a direct replacement for Z1806C720APWST in existing designs?
A: Yes. The LSMCC451611T720NG is electrically and mechanically equivalent to the Z1806C720APWST across all critical parameters: 72 Ohms @ 100 MHz impedance, 6A current rating, 7mOhm DC resistance, identical 1806 (4516 Metric) package geometry, and matching operating temperature range. No circuit modifications are required.
Q: What is the difference between the Taiyo Yuden substitute parts (LBMCC, LLMCC, LMMCC, LSMCC)?
A: These parts represent different series designations within Taiyo Yuden's ferrite bead product line but are electrically and mechanically identical. The differences are internal to the manufacturer's product organization and do not affect performance or compatibility. All four are Active products suitable for new designs.
Q: Does packaging format (Cut Tape vs. Tape & Reel) affect electrical performance?
A: No. Packaging format differences represent procurement and handling methods only. Cut Tape (CT) and Tape & Reel (TR) formats contain identical components with identical electrical and mechanical specifications. Selection between formats depends on assembly process requirements and order quantities.
Q: Why is FBMJ4516HS720NT marked "Not For New Designs"?
A: The "Not For New Designs" status indicates that while the part meets all electrical and mechanical specifications, the manufacturer has designated it for legacy support only. For new product development, selection from the Active product alternatives (LBMCC, LLMCC, LMMCC, LSMCC series) is recommended.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All identified substitute parts carry ROHS3 Compliant status and REACH Unaffected designation, matching the regulatory compliance profile of the original Z1806C720APWST.
Q: What is the maximum current these ferrite beads can handle?
A: All parts in this equivalence group are rated for 6A maximum current. DC resistance is 7mOhm maximum across all alternatives, ensuring consistent thermal performance and voltage drop characteristics.
Q: Can these ferrite beads be used in high-temperature applications?
A: Yes. All substitute parts maintain full specifications across the operating temperature range of -40°C to 125°C, supporting both industrial and automotive temperature environments.
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