UP5-681-R Equivalent & Substitute Parts Reference

Part Overview

The UP5-681-R is a 680 µH unshielded wirewound surface mount inductor manufactured by Eaton - Electronics Division under the UNI-PAC™ 5 series. This component is rated for 720 mA continuous current with a maximum DC resistance of 1.1Ohm and operates across the temperature range of -25°C to 105°C. The part maintains Active product status with full RoHS compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across critical parameters including inductance value, current rating, DC resistance, and physical dimensions within acceptable tolerances.

Substiute Parts

UP5-681-R

Eaton - Electronics DivisionIn Stock: 911UP5-681-R Datasheet

Current PartRFQ

P0250.684NLT

Pulse ElectronicsIn Stock: 3714P0250.684NLT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UP5-681-R is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Non-Negotiable):

• Inductance value: 680 µH (exact match required)
• Current rating: 720 mA minimum (equal or higher acceptable)
• DC resistance: 1.1Ohm maximum (equal or lower acceptable)
• Saturation current: 1.2A minimum (equal or higher acceptable)
• Shielding configuration: Unshielded (must match)

Mechanical Parameters (Non-Negotiable):

• Mounting type: Surface Mount (must match)
• Package classification: Nonstandard (physical dimensions must accommodate PCB layout)
• Physical dimensions: Length, width, and height must be compatible with board layout constraints

Compliance & Environmental Parameters:

• RoHS compliance status: Substitute must maintain RoHS compliance
• Operating temperature range: Substitute range must cover or exceed -25°C to 105°C
• Moisture sensitivity: MSL 1 (Unlimited) preferred for supply chain flexibility

The P0250.684NLT from Pulse Electronics qualifies as a direct substitute based on matching all critical electrical specifications and maintaining compatible physical dimensions within acceptable manufacturing tolerances.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: UP5-681-R (Eaton - Electronics Division)

Use the original UP5-681-R when:

• Existing designs are qualified and validated with this specific part
• Supply chain continuity with Eaton is established
• Current inventory (854 Pcs) meets project timeline requirements
• Design documentation specifies UNI-PAC™ 5 series components

Substitute Selection: P0250.684NLT (Pulse Electronics)

The P0250.684NLT qualifies as a direct electrical and mechanical substitute based on:

• Identical inductance value (680 µH) and current rating (720 mA)
• Matching DC resistance specification (1.1Ohm Max)
• Equivalent saturation current (1.2A)
• Compatible physical dimensions within manufacturing tolerances (variance <0.25mm across all axes)
• Extended operating temperature range (-40°C to 130°C) provides broader environmental coverage
• Tighter inductance tolerance (±15% vs ±20%) offers improved circuit performance consistency
• Both parts maintain RoHS and MSL 1 compliance
• Both parts are Active status with established supply availability (3609 Pcs in stock)

Use P0250.684NLT when:

• Supply constraints on UP5-681-R occur
• Extended temperature range (-40°C to 130°C) is required for the application
• Tighter inductance tolerance improves circuit performance
• Pulse Electronics supply chain is preferred or established
• Design flexibility permits component substitution with equivalent specifications

Dimensional Compatibility Note:

Physical dimension variances between the two parts are within typical manufacturing tolerances for nonstandard packages:

• Length variance: 0.22mm (1.2% of nominal)
• Width variance: 0.14mm (0.9% of nominal)
• Height variance: 0.14mm (1.9% of nominal)

These variances are acceptable for surface mount assembly processes and do not require PCB layout modifications.

Frequently Asked Questions (FAQ)

Q: Can P0250.684NLT be used as a direct replacement for UP5-681-R in existing designs?

A: Yes. The P0250.684NLT meets all critical electrical specifications (680 µH inductance, 720 mA current rating, 1.1Ohm DCR) and maintains compatible physical dimensions. Both parts are surface mount, unshielded wirewound inductors with identical saturation current (1.2A) and RoHS compliance. Dimensional variances are within manufacturing tolerances and do not require PCB redesign.

Q: What are the key differences between these two parts?

A: The primary differences are: (1) Inductance tolerance: P0250.684NLT offers ±15% versus UP5-681-R at ±20%, providing tighter performance consistency; (2) Operating temperature range: P0250.684NLT extends to -40°C to 130°C versus UP5-681-R at -25°C to 105°C; (3) Manufacturer: Eaton versus Pulse Electronics; (4) Physical dimensions vary by less than 0.25mm across all axes. All electrical performance parameters are identical.

Q: Are there any compliance or regulatory differences?

A: Both parts maintain full RoHS compliance (UP5-681-R is RoHS Compliant; P0250.684NLT is ROHS3 Compliant). Both carry MSL 1 (Unlimited) moisture sensitivity rating. Both are classified under ECCN EAR99 and HTSUS 8504.50.4000. No regulatory barriers exist for substitution.

Q: Will the dimensional differences affect PCB assembly?

A: No. Dimensional variances are: length +0.22mm, width +0.14mm, height -0.14mm. These fall within standard surface mount assembly tolerances and do not require PCB layout modifications. Both parts use identical Tape & Reel (TR) packaging format.

Q: Which part should be selected for new designs?

A: For new designs, either part is acceptable. P0250.684NLT offers advantages in extended temperature range (-40°C to 130°C) and tighter inductance tolerance (±15%), making it suitable for demanding environmental or precision applications. UP5-681-R remains appropriate for standard industrial temperature range applications (-25°C to 105°C). Selection should align with application requirements and established supply chain preferences.

Q: What is the inductance tolerance impact on circuit performance?

A: UP5-681-R tolerance of ±20% allows inductance variation from 544 µH to 816 µH. P0250.684NLT tolerance of ±15% constrains variation to 578 µH to 782 µH. For circuits sensitive to inductance variation, P0250.684NLT provides improved performance consistency. For general-purpose applications, both tolerances are acceptable.

Q: Are both parts currently available?

A: Yes. UP5-681-R has 854 Pcs in stock. P0250.684NLT has 3609 Pcs in stock. Both maintain Active product status with established supply channels.