MP5981GLU-Z Electronic Fuse Regulator Equivalent & Substitute Parts

Part Overview

The MP5981GLU-Z is an active electronic fuse regulator manufactured by Monolithic Power Systems Inc., designed for high-side current limiting and protection applications. This Power Management IC operates across input voltage ranges of 4V to 16V with a maximum output current capacity of 50A, housed in a 32-LGA (5x5) surface mount package. The device is classified as Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when identical electrical specifications, mechanical compatibility, and regulatory certifications are maintained across alternative packaging configurations or inventory sources.

Substiute Parts

MP5981GLU-Z

Monolithic Power Systems Inc.In Stock: 21181MP5981GLU-Z Datasheet

Current PartRFQ

MP5981GLU-P

Monolithic Power Systems Inc.In Stock: 1137MP5981GLU-P Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MP5981GLU-Z is determined by strict equivalence across the following critical parameters:

Electrical Specifications: Input voltage range (4V ~ 16V), output current rating (50A), operating temperature range (-40°C ~ 125°C TJ), and high-side sensing method must remain identical.

Mechanical Compatibility: Package type (32-VFQFN Exposed Pad), supplier device package designation (32-LGA 5x5), and surface mount mounting type must be preserved.

Regulatory & Compliance: RoHS3 compliance status, REACH unaffected designation, MSL rating (3, 168 Hours), ECCN classification (EAR99), and HTSUS code (8542.39.0001) must match exactly.

Manufacturer & Product Status: Parts must originate from Monolithic Power Systems Inc. and maintain Active product status.

The only variable parameter permitting substitution is the packaging format (Cut Tape vs. Tape & Reel), which affects supply chain logistics but not electrical or mechanical performance.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (MP5981GLU-Z): Specified for applications requiring Cut Tape or Digi-Reel® packaging format. Current inventory: 21,073 pieces. Suitable for direct component pick-and-place assembly operations or manual handling scenarios where individual unit access is required.

Substitute Selection (MP5981GLU-P): Specified for applications requiring Tape & Reel (TR) packaging format. Current inventory: 1,116 pieces. Suitable for high-volume automated assembly operations utilizing standard reel-fed component placement equipment.

Both parts maintain identical electrical performance, thermal characteristics, and regulatory compliance. Selection between MP5981GLU-Z and MP5981GLU-P is determined solely by packaging and supply chain requirements, not by functional or performance considerations. Both parts are Active status products from Monolithic Power Systems Inc. with full RoHS3 compliance and REACH unaffected designation.

Frequently Asked Questions (FAQ)

Q: Can MP5981GLU-P be used as a direct replacement for MP5981GLU-Z in circuit design?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format (Cut Tape vs. Tape & Reel). Circuit performance, thermal behavior, and electrical specifications are identical across all operating conditions.

Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging?

A: Cut Tape packaging delivers components on continuous tape that is cut into individual segments, suitable for manual assembly or small-batch operations. Tape & Reel packaging maintains components on continuous reels compatible with automated pick-and-place equipment used in high-volume manufacturing. Both formats contain identical components in the same 32-LGA (5x5) package.

Q: Are there any compatibility issues when switching between MP5981GLU-Z and MP5981GLU-P?

A: No compatibility issues exist. Both parts use identical 32-VFQFN Exposed Pad package geometry, pinout, and electrical specifications. PCB footprints, solder reflow profiles, and assembly procedures are identical.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both MP5981GLU-Z and MP5981GLU-P are RoHS3 compliant, REACH unaffected, classified as EAR99 for export control, and carry identical HTSUS code 8542.39.0001. Moisture sensitivity level (MSL 3, 168 Hours) is identical.

Q: Which part should be selected for new design implementations?

A: Selection is based on manufacturing process requirements. For automated assembly lines with reel-fed equipment, select MP5981GLU-P (Tape & Reel). For manual assembly, prototyping, or operations using cut-tape compatible equipment, select MP5981GLU-Z (Cut Tape & Digi-Reel®). Electrical and thermal performance are identical.

Q: What is the operating temperature range for both parts?

A: Both MP5981GLU-Z and MP5981GLU-P operate across -40°C to 125°C junction temperature (TJ). This range applies to all electrical specifications and performance guarantees.

Q: Are both parts currently available?

A: Yes. MP5981GLU-Z has 21,073 pieces in stock. MP5981GLU-P has 1,116 pieces in stock. Both are Active status products from Monolithic Power Systems Inc.