UP1B-151 Equivalent & Substitute Parts Reference

Part Overview

The UP1B-151 is a 150 µH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division, rated for 400 mA continuous current with a maximum DC resistance of 1.61 Ohm. This component operates across the temperature range of -40°C to 85°C and is part of the UNI-PAC™ series. The UP1B-151 is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity. Substitute parts must maintain the 150 µH inductance specification while accommodating variations in current rating, DC resistance, and packaging format.

Substiute Parts

UP1B-151

Eaton - Electronics DivisionIn Stock: 953UP1B-151 Datasheet

Current PartRFQ

UP1B-151-R

Eaton - Electronics DivisionIn Stock: 1203UP1B-151-R Datasheet

DirectRFQ

SDR0805-151KL

Bourns Inc.In Stock: 7904SDR0805-151KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the UP1B-151 are identified based on strict electrical and mechanical parameter alignment. The primary substitution criteria are:

Core Electrical Parameters:

• Inductance value: 150 µH (exact match required)
• Core material: Ferrite (unshielded drum core configuration)
• Mounting type: Surface mount

Current and Resistance Characteristics: Substitute parts must support the application's current requirements. The UP1B-151 specifies 400 mA continuous current rating with 460 mA saturation current. Substitute parts with equal or higher current ratings are acceptable. DC resistance variations are permitted when the substitute part maintains electrical performance within the application circuit.

Environmental and Compliance Parameters: Operating temperature range, RoHS compliance status, and moisture sensitivity level are documented for each part to support design compliance requirements.

Parameter Comparison

Engineering Selection Recommendations

UP1B-151-R (Eaton - Electronics Division): The UP1B-151-R is the direct equivalent of the UP1B-151, maintaining identical electrical specifications including 150 µH inductance, 400 mA current rating, and 1.61 Ohm maximum DC resistance. The primary distinction is product status: UP1B-151-R is active, whereas UP1B-151 is obsolete. UP1B-151-R is supplied in Tape & Reel packaging format and achieves RoHS compliance. This part is the preferred substitute when design specifications require exact electrical parameter matching and active product status.

SDR0805-151KL (Bourns Inc.): The SDR0805-151KL maintains the 150 µH inductance specification and unshielded ferrite drum core configuration. This part provides enhanced electrical performance characteristics: 580 mA current rating (45% higher than UP1B-151), 850 mA saturation current, and 680 mOhm DC resistance (58% lower than UP1B-151). The SDR0805-151KL operates across an extended temperature range of -40°C to 125°C and achieves ROHS3 compliance. This part is suitable for applications where improved current handling capacity and lower DC resistance losses are beneficial. The inductance tolerance is ±10%, providing tighter specification control compared to the ±20% tolerance of the UP1B-151.

Both substitute parts are active products with established supply availability, supporting long-term design continuity.

Frequently Asked Questions (FAQ)

Q: Can UP1B-151-R be used as a direct replacement for UP1B-151?

A: Yes. UP1B-151-R is electrically and mechanically identical to UP1B-151, with matching 150 µH inductance, 400 mA current rating, and 1.61 Ohm maximum DC resistance. The primary difference is product status and packaging format. UP1B-151-R is active and supplied in Tape & Reel format, whereas UP1B-151 is obsolete and supplied in bulk packaging.

Q: What are the key differences between UP1B-151 and SDR0805-151KL?

A: Both parts share the 150 µH inductance value and unshielded ferrite drum core construction. SDR0805-151KL provides higher current rating (580 mA versus 400 mA), lower DC resistance (680 mOhm versus 1.61 Ohm), tighter inductance tolerance (±10% versus ±20%), and extended operating temperature range (-40°C to 125°C versus -40°C to 85°C). SDR0805-151KL is manufactured by Bourns Inc., whereas UP1B-151 is manufactured by Eaton - Electronics Division.

Q: Is SDR0805-151KL suitable for applications designed for UP1B-151?

A: SDR0805-151KL is suitable when the application circuit can accommodate the electrical parameter variations. The 150 µH inductance is identical. The higher current rating and lower DC resistance of SDR0805-151KL reduce power dissipation and thermal stress. Verify that the physical dimensions (0.307" L x 0.307" W x 0.209" H for SDR0805-151KL versus 0.350" L x 0.240" W x 0.197" H for UP1B-151) are compatible with the PCB layout.

Q: What packaging formats are available for these parts?

A: UP1B-151 is supplied in bulk packaging. UP1B-151-R is supplied in Tape & Reel (TR) format. SDR0805-151KL is supplied in Cut Tape (CT) and Digi-Reel® formats. Packaging selection depends on production volume and assembly process requirements.

Q: Are these parts RoHS compliant?

A: UP1B-151 is RoHS non-compliant. UP1B-151-R is RoHS compliant. SDR0805-151KL is ROHS3 compliant. Design specifications requiring RoHS compliance must use UP1B-151-R or SDR0805-151KL.

Q: What is the inductance tolerance specification for each part?

A: UP1B-151 and UP1B-151-R specify ±20% inductance tolerance. SDR0805-151KL specifies ±10% inductance tolerance, providing tighter specification control for applications requiring precise inductance values.