TE Connectivity 3613C331K Equivalent & Substitute Parts

Part Overview

The TE Connectivity 3613C331K is a fixed unshielded inductor rated at 330 µH with a maximum current capacity of 85 mA and a DC resistance of 14 Ohm maximum. This component is part of the 3613C Sigma Inductors series and is designed for surface mount applications in the 1812 (4532 Metric) package format. The part maintains active product status and is RoHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are identified to provide design flexibility, support supply chain continuity, and accommodate specific application requirements where alternative manufacturers or series variants meet identical electrical and mechanical specifications.

Substiute Parts

3613C331K

TE Connectivity Passive ProductIn Stock: 10943613C331K Datasheet

Current PartRFQ

744766233

Würth ElektronikIn Stock: 1891744766233 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TE Connectivity 3613C331K is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Inductance value: 330 µH
• Inductance tolerance: ±10%
• Current rating: 85 mA minimum
• DC resistance: 14 Ohm maximum
• Q factor: 40 @ 796 kHz
• Inductance test frequency: 796 kHz

Mechanical Parameters:

• Package format: 1812 (4532 Metric)
• Mounting type: Surface Mount
• Core material: Ferrite
• Shielding configuration: Unshielded

Compliance Parameters:

• RoHS3 compliance required
• Moisture sensitivity level: 1 (Unlimited)

Substitute parts must satisfy all electrical specifications within stated tolerances, maintain identical package dimensions and mounting characteristics, and comply with applicable regulatory standards. The Würth Elektronik 744766233 meets these criteria as a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the TE Connectivity 3613C331K and Würth Elektronik 744766233 are active products with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Selection between these parts is based on the following engineering considerations:

TE Connectivity 3613C331K:

• Specified operating temperature range: -30°C to 100°C
• Self-resonant frequency: 3.5 MHz
• Seated height: 3.40 mm maximum
• Established availability: 1079 pieces in stock

Würth Elektronik 744766233:

• Extended operating temperature range: -40°C to 105°C
• Higher self-resonant frequency: 4.5 MHz
• Seated height: 3.60 mm maximum
• Higher availability: 1800 pieces in stock
• REACH Unaffected status

The Würth Elektronik 744766233 provides extended temperature performance and higher self-resonant frequency characteristics. The 0.20 mm increase in seated height remains within typical PCB assembly tolerances for 1812 package components. Selection should be based on specific application requirements regarding temperature extremes, frequency response, and available board clearance.

Frequently Asked Questions (FAQ)

Q: Can the Würth Elektronik 744766233 be used as a direct replacement for the TE Connectivity 3613C331K?

A: Yes. Both components share identical inductance (330 µH), current rating (85 mA), DC resistance (14 Ohm maximum), Q factor (40 @ 796 kHz), package format (1812/4532 Metric), and compliance certifications (ROHS3, MSL 1). The Würth Elektronik part exceeds the TE Connectivity specifications in operating temperature range and self-resonant frequency.

Q: What are the physical dimension differences between these parts?

A: Both components measure 4.50 mm length × 3.20 mm width. The seated height differs: TE Connectivity 3613C331K is 3.40 mm maximum, while Würth Elektronik 744766233 is 3.60 mm maximum. This 0.20 mm difference is within standard PCB assembly tolerances for surface mount components in this package class.

Q: Are there temperature range considerations for substitution?

A: The TE Connectivity 3613C331K operates from -30°C to 100°C. The Würth Elektronik 744766233 operates from -40°C to 105°C. If your application requires operation below -30°C or above 100°C, the Würth Elektronik part provides extended temperature coverage.

Q: How do the self-resonant frequencies compare?

A: The TE Connectivity 3613C331K has a self-resonant frequency of 3.5 MHz. The Würth Elektronik 744766233 has a self-resonant frequency of 4.5 MHz. This difference may be relevant for high-frequency applications where impedance characteristics near resonance are critical.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the TE Connectivity 3613C331K and Würth Elektronik 744766233 are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

Q: What is the inductance tolerance for both parts?

A: Both parts have an inductance tolerance of ±10%, ensuring equivalent performance within specified limits.

Q: Can these parts be used interchangeably in existing designs?

A: Yes, provided that the application does not have constraints that would be affected by the 0.20 mm height difference or the variations in self-resonant frequency. PCB layout and assembly processes should accommodate the Würth Elektronik part's maximum seated height of 3.60 mm.