SC3340F-151 Equivalent & Substitute Parts

Part Overview

The SC3340F-151 is a 150 µH unshielded wirewound surface mount inductor manufactured by Signal Transformer, rated for 1.5 A continuous current with a maximum DC resistance of 340mOhm. The component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent inductance values, current ratings, and DC resistance specifications align within acceptable tolerance ranges for the application, enabling procurement flexibility and supply chain continuity.

Substiute Parts

SC3340F-151

Signal TransformerIn Stock: 1260SC3340F-151 Datasheet

Current PartRFQ

B82476B1154M100

EPCOS - TDK ElectronicsIn Stock: 13794B82476B1154M100 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SC3340F-151 is determined by the following critical parameters:

Inductance Value: 150 µH ±20% tolerance establishes the primary functional requirement. Substitute parts must maintain this inductance specification at the 100 kHz test frequency.

Current Rating: The SC3340F-151 operates at 1.5 A continuous current. Substitute parts must support equivalent or higher current ratings to ensure safe operation without thermal degradation.

DC Resistance: Maximum DCR of 340mOhm defines acceptable power loss characteristics. Substitute parts with equal or lower DCR values maintain equivalent electrical performance.

Saturation Current: The 2 A saturation point establishes the maximum current before inductance collapse. Substitute parts must meet or exceed this specification.

Mounting and Package: Surface mount configuration with nonstandard package dimensions requires substitute parts to be compatible with the same mounting technology and footprint constraints.

Environmental Compliance: ROHS3 compliance and MSL 1 rating are mandatory for equivalent substitution in regulated applications.

The B82476B1154M100 qualifies as a substitute based on matching inductance (150 µH), equivalent tolerance (±20%), surface mount configuration, and ROHS3 compliance. Current rating differences and DC resistance variations are noted in the parameter comparison table below.

Parameter Comparison

Engineering Selection Recommendations

Both the SC3340F-151 and B82476B1154M100 maintain Active product status and ROHS3 compliance, ensuring continued availability and regulatory alignment. The B82476B1154M100 carries AEC-Q200 automotive qualification, providing additional reliability assurance for applications requiring automotive-grade components.

The primary differentiation lies in current handling capacity. The SC3340F-151 supports 1.5 A continuous current with 2 A saturation, while the B82476B1154M100 is rated for 1.1 A continuous current with 1 A saturation. Selection between these parts depends on circuit current requirements. Applications operating at or above 1.1 A continuous current require the SC3340F-151 to avoid saturation and thermal stress.

DC resistance specifications are equivalent (340mOhm vs. 330mOhm), ensuring comparable power dissipation characteristics. The B82476B1154M100 offers an extended operating temperature range (-55°C to 150°C versus -40°C to 125°C), beneficial for extreme environment applications.

Physical dimensions differ slightly, with the B82476B1154M100 featuring a lower profile (5.08mm vs. 11.43mm seated height). PCB layout constraints may favor the lower-profile substitute in space-constrained designs.

Frequently Asked Questions (FAQ)

Q: Can the B82476B1154M100 directly replace the SC3340F-151 in all applications?

A: Direct substitution is valid only when circuit current requirements do not exceed 1.1 A continuous operation. The B82476B1154M100 saturation current of 1 A is lower than the SC3340F-151 specification of 2 A. Applications requiring sustained currents above 1.1 A must retain the SC3340F-151.

Q: What is the significance of the inductance tolerance ±20%?

A: Both parts share ±20% inductance tolerance, meaning actual inductance values may range from 120 µH to 180 µH. Circuit designs must accommodate this tolerance band. Substitute parts with identical tolerance specifications ensure equivalent performance predictability.

Q: How do the different core materials affect substitution?

A: The SC3340F-151 core material is not specified, while the B82476B1154M100 uses ferrite drum core construction. Both are unshielded wirewound inductors with identical inductance and tolerance at 100 kHz test frequency. Core material differences do not prevent substitution when electrical parameters align.

Q: Does the lower profile of the B82476B1154M100 affect electrical performance?

A: Physical profile does not alter electrical characteristics. The 5.08mm seated height of the B82476B1154M100 versus 11.43mm of the SC3340F-151 is a mechanical consideration relevant only to PCB layout and assembly constraints.

Q: Are both parts suitable for automotive applications?

A: The B82476B1154M100 carries AEC-Q200 automotive qualification. The SC3340F-151 does not list automotive certification. Applications requiring automotive-grade components should specify the B82476B1154M100.

Q: What does MSL 1 (Unlimited) moisture sensitivity mean for handling?

A: MSL 1 classification indicates the component is not moisture-sensitive and requires no special moisture control during storage or assembly. Both parts share this classification, eliminating moisture-related handling differences.