UP1B-151-R Equivalent & Substitute Parts Reference

Part Overview

The UP1B-151-R 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 packaged in surface mount nonstandard form factor. The part is active in production status and RoHS compliant.

Substitute parts are identified when equivalent inductance values, core materials, shielding characteristics, and mounting technologies are maintained within acceptable tolerance and current rating parameters. Alternative sources become necessary for supply chain continuity, inventory availability, or specific application requirements where substitute electrical characteristics remain within design margins.

Substiute Parts

UP1B-151-R

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

Current PartRFQ

SDR0805-151KL

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UP1B-151-R is determined by the following criteria:

Primary Matching Parameters:

• Inductance value: 150 µH (tolerance range ±20% for main part allows 120–180 µH operational window)
• Core type: Ferrite drum core, wirewound construction
• Shielding configuration: Unshielded
• Mounting technology: Surface mount

Current and Thermal Parameters:

• Continuous current rating must equal or exceed 400 mA
• Saturation current (Isat) must equal or exceed 460 mA
• DC resistance must not exceed design margins for the application circuit

Environmental and Compliance Parameters:

• Operating temperature range must encompass or exceed -40°C to 85°C
• RoHS compliance status must be active (RoHS Compliant or ROHS3 Compliant)
• Moisture sensitivity level must be 1 (Unlimited) or equivalent

The SDR0805-151KL from Bourns Inc. meets all primary matching criteria with superior current ratings (580 mA continuous, 850 mA saturation) and lower DC resistance (680 mOhm maximum), providing enhanced performance margins within the same inductance specification and ferrite core technology.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (UP1B-151-R): The UP1B-151-R remains the specified component when exact form factor and footprint dimensions are design-critical constraints. This part is active in production, RoHS compliant, and maintains unlimited moisture sensitivity rating. Current inventory of 1115 pieces supports immediate procurement.

Substitute Part Selection (SDR0805-151KL): The SDR0805-151KL is suitable for applications where the following conditions are met:

• PCB layout accommodates the smaller footprint (7.80mm x 7.80mm versus 8.89mm x 6.10mm)
• Height clearance permits the 5.30mm maximum seated height
• Application benefits from lower DC resistance (680 mOhm versus 1.61 Ohm) and higher current ratings (580 mA continuous versus 400 mA)
• Extended operating temperature range (-40°C to 125°C) provides thermal margin advantage
• Tighter inductance tolerance (±10% versus ±20%) improves circuit performance predictability

Both parts maintain identical inductance specification, ferrite core construction, unshielded configuration, and surface mount technology. Both are RoHS compliant with unlimited moisture sensitivity rating. The SDR0805-151KL from Bourns Inc. is available in higher inventory (7800 pieces) and offers enhanced electrical performance margins.

Frequently Asked Questions (FAQ)

Q: Can the SDR0805-151KL directly replace the UP1B-151-R on existing PCBs?

A: Direct PCB replacement requires verification of footprint compatibility. The SDR0805-151KL has a smaller footprint (7.80mm x 7.80mm square) compared to the UP1B-151-R (8.89mm x 6.10mm rectangular). Pad layout and spacing must be evaluated. Height difference (5.30mm versus 5.00mm) is minimal and typically acceptable in most applications.

Q: What are the electrical performance differences?

A: The SDR0805-151KL provides superior electrical characteristics: continuous current rating of 580 mA (versus 400 mA), saturation current of 850 mA (versus 460 mA), and significantly lower DC resistance of 680 mOhm (versus 1.61 Ohm). Inductance tolerance is tighter at ±10% versus ±20%. These differences result in lower power dissipation and improved circuit stability.

Q: Are both parts suitable for the same temperature range?

A: The UP1B-151-R operates from -40°C to 85°C. The SDR0805-151KL extends to -40°C to 125°C. If the application requires operation above 85°C, only the SDR0805-151KL is suitable. For applications within -40°C to 85°C, both parts are acceptable.

Q: What is the packaging difference?

A: The UP1B-151-R is supplied in Tape & Reel (TR) packaging. The SDR0805-151KL is supplied in Cut Tape (CT) and Digi-Reel® packaging. Packaging format may affect procurement, handling, and assembly processes.

Q: Are both parts RoHS compliant?

A: Yes. The UP1B-151-R is RoHS Compliant. The SDR0805-151KL is ROHS3 Compliant. Both meet current RoHS requirements and are suitable for applications requiring lead-free construction.

Q: Which part should be selected for new designs?

A: For new designs without existing PCB constraints, the SDR0805-151KL is the preferred selection due to superior current ratings, lower DC resistance, tighter inductance tolerance, extended temperature range, and higher inventory availability. For designs requiring exact form factor matching or where PCB layout is already finalized, the UP1B-151-R maintains specification compliance.