TYS4018151M-10 Equivalent & Substitute Parts

Part Overview

The TYS4018151M-10 is a 150 µH shielded surface mount inductor manufactured by Laird-Signal Integrity Products. Designed for applications requiring fixed inductance with moderate current handling, this component operates across an industrial temperature range of -40°C to 125°C. The part is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or inventory depletion. The identification of equivalent inductors requires strict alignment of electrical specifications including inductance value, current rating, saturation current, DC resistance, and physical package dimensions to ensure functional interchangeability within the target application circuit.

Substiute Parts

TYS4018151M-10

Laird-Signal Integrity ProductsIn Stock: 999TYS4018151M-10 Datasheet

Current PartRFQ

NRS4018T151MDGJ

Taiyo YudenIn Stock: 17423NRS4018T151MDGJ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TYS4018151M-10 is determined by the following critical parameters:

Electrical Equivalence Criteria:

• Inductance value must equal 150 µH with ±20% tolerance
• Current rating must support minimum 220 mA continuous operation
• Saturation current (Isat) must meet or exceed 310 mA
• DC resistance must not exceed 2.5 Ohm maximum specification
• Self resonant frequency must equal 5.5 MHz at 100 kHz test frequency

Mechanical & Environmental Criteria:

• Surface mount package configuration required
• Physical footprint 4.00 mm × 4.00 mm × 2.00 mm maximum seated height
• Shielded construction mandatory
• Operating temperature range must encompass -40°C to 125°C minimum
• RoHS3 compliance required

The substitute part NRS4018T151MDGJ from Taiyo Yuden meets all electrical and mechanical equivalence parameters. However, product status differences and minor specification variations require engineering evaluation for specific application contexts.

Parameter Comparison

Engineering Selection Recommendations

Primary Component (TYS4018151M-10): The Laird-Signal Integrity Products TYS4018151M-10 maintains Active product status, indicating ongoing manufacturer support, continued availability, and suitability for new design implementations. This component is the preferred selection for applications requiring long-term supply assurance and manufacturer technical support.

Substitute Component (NRS4018T151MDGJ): The Taiyo Yuden NRS4018T151MDGJ is classified as "Not For New Designs," indicating the manufacturer has discontinued active development and support for this product line. This designation restricts its use to legacy system maintenance, repair operations, or temporary supply solutions only.

Specification Deviations: The substitute part exhibits a DC resistance of 2.76 Ohm maximum, which exceeds the primary component specification of 2.5 Ohm maximum by 0.26 Ohm. This 10.4% increase in resistance may introduce additional power dissipation in current-limited applications. The substitute's saturation current of 340 mA provides a 30 mA margin above the primary specification, offering improved headroom against saturation events.

The substitute component's operating temperature minimum of -25°C does not extend to the primary component's -40°C lower limit. Applications requiring operation below -25°C must use the primary TYS4018151M-10 component.

Both components maintain RoHS3 compliance and identical self-resonant frequency characteristics. Physical package height of the substitute (1.80 mm) is 0.20 mm lower than the primary component (2.00 mm), providing improved board-level clearance in space-constrained layouts.

Frequently Asked Questions (FAQ)

Q: Can the NRS4018T151MDGJ directly replace the TYS4018151M-10 in existing designs?

A: Electrical substitution is feasible for applications operating within the temperature range of -25°C to 125°C and tolerating the increased DC resistance of 2.76 Ohm. The "Not For New Designs" status of the substitute part restricts its use to maintenance and repair scenarios. New design implementations must use the Active-status TYS4018151M-10.

Q: What impact does the 0.26 Ohm increase in DC resistance have on circuit performance?

A: The substitute part's higher DC resistance increases resistive power loss proportionally to the square of the operating current. At the 220 mA rated current, the additional resistance generates approximately 13.4 mW additional dissipation compared to the primary component. Circuit thermal analysis must confirm acceptable temperature rise under this condition.

Q: Are the physical package dimensions compatible between these two parts?

A: Both components use identical 4.00 mm × 4.00 mm footprints and are surface mount compatible. The substitute part's 1.80 mm seated height is 0.20 mm lower than the primary component's 2.00 mm height, providing improved clearance. No PCB layout modifications are required for dimensional accommodation.

Q: Does the substitute part meet the same compliance standards?

A: Both components maintain RoHS3 compliance, REACH Unaffected status, and unlimited moisture sensitivity rating (MSL 1). Regulatory compliance is equivalent between the two parts.

Q: What is the significance of the substitute part's higher saturation current specification?

A: The NRS4018T151MDGJ saturation current of 340 mA exceeds the primary component's 310 mA specification by 30 mA. This provides additional margin against saturation-induced inductance collapse in applications experiencing transient current spikes or worst-case operating conditions.

Q: Can the substitute part be used in applications requiring -40°C operation?

A: No. The NRS4018T151MDGJ operating temperature minimum of -25°C does not meet the primary component's -40°C specification. Applications requiring operation at -40°C must use the TYS4018151M-10 component exclusively.