R1114Q151A-TR-FE Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The R1114Q151A-TR-FE is an active linear voltage regulator IC manufactured by Nisshinbo Micro Devices Inc., classified as a Power Management (PMIC) component. This device functions as a positive fixed output voltage regulator delivering 1.5V at 150mA output current in a surface mount SC-82A (SOT-343) package format supplied on tape and reel. The regulator incorporates enable control and over-current protection features, operating across the industrial temperature range of -40°C to 85°C.

Identification of equivalent and substitute parts becomes necessary when the primary part number experiences supply constraints, extended lead times, or inventory limitations. This reference provides parametric equivalents that maintain functional compatibility within specified electrical and mechanical tolerances.

Substiute Parts

R1114Q151A-TR-FE

Nisshinbo Micro Devices Inc.In Stock: 1140R1114Q151A-TR-FE Datasheet

Current PartRFQ

R1180Q151B-TR-FE

Nisshinbo Micro Devices Inc.In Stock: 15915R1180Q151B-TR-FE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the R1114Q151A-TR-FE is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Output voltage (fixed): 1.5V
• Output current capability: 150mA
• Maximum input voltage: 6V
• Package type: SC-82A (SOT-343)
• Mounting type: Surface Mount
• Output configuration: Positive
• Control features: Enable function
• Protection features: Over-current protection
• Operating temperature range: -40°C to 85°C
• RoHS compliance status
• Moisture sensitivity level (MSL): 1

Allowable Variation Parameters:

• Dropout voltage: Variations within acceptable circuit design margins
• Quiescent current: Variations that do not impact system power budget requirements
• PSRR specification: Variations in power supply rejection ratio performance

The R1180Q151B-TR-FE qualifies as a parametric equivalent based on matching all mandatory parameters while exhibiting acceptable variations in dropout voltage, quiescent current, and PSRR characteristics.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: R1114Q151A-TR-FE

Selection of the R1114Q151A-TR-FE is appropriate when supply availability is confirmed and inventory levels support project timelines. This part maintains active product status with RoHS compliance certification and MSL-1 moisture sensitivity rating, indicating no special storage or handling requirements beyond standard surface mount component practices.

Substitute Part: R1180Q151B-TR-FE

The R1180Q151B-TR-FE functions as a direct parametric equivalent for applications requiring the R1114Q151A-TR-FE. Both devices are manufactured by Nisshinbo Micro Devices Inc. and maintain identical active product status with equivalent compliance certifications. The R1180Q151B-TR-FE exhibits superior quiescent current performance (1.5µA versus 95µA), resulting in reduced standby power consumption in battery-powered or low-power applications. The increased dropout voltage specification (0.9V versus 0.7V) remains within acceptable operating margins for circuits designed to the R1114Q151A-TR-FE electrical specifications.

Both parts are supplied in identical SC-82A (SOT-343) surface mount packages on tape and reel, ensuring mechanical and assembly compatibility without PCB layout modifications or requalification of manufacturing processes.

Frequently Asked Questions (FAQ)

Q: Can the R1180Q151B-TR-FE be used as a direct replacement for the R1114Q151A-TR-FE in existing designs?

A: Yes. Both parts deliver identical output voltage (1.5V) and output current (150mA) specifications with matching package types (SC-82A, SOT-343), control features (Enable), and protection features (Over-current). The parts are pin-compatible and require no circuit modifications for substitution.

Q: What is the significance of the dropout voltage difference between these parts?

A: The R1114Q151A-TR-FE specifies 0.7V maximum dropout voltage at 150mA, while the R1180Q151B-TR-FE specifies 0.9V. Dropout voltage represents the minimum voltage differential between input and output required for proper regulator operation. Circuits designed for the R1114Q151A-TR-FE will operate with the R1180Q151B-TR-FE provided the input voltage remains sufficient to maintain the higher dropout margin. For applications with marginal input voltage headroom, verification of input voltage adequacy is necessary.

Q: How does the quiescent current difference affect circuit performance?

A: The R1114Q151A-TR-FE draws 95µA quiescent current, while the R1180Q151B-TR-FE draws 1.5µA. Quiescent current represents the regulator's internal power consumption when delivering no load current. The R1180Q151B-TR-FE's lower quiescent current reduces total system power consumption, providing a performance advantage in battery-powered applications. This difference does not affect output voltage regulation or load current delivery capability.

Q: Are both parts available in the same packaging format?

A: Yes. Both the R1114Q151A-TR-FE and R1180Q151B-TR-FE are supplied in SC-82A (SOT-343) surface mount packages on tape and reel (TR). No packaging modifications or assembly process changes are required for substitution.

Q: What compliance certifications apply to both parts?

A: Both parts carry RoHS compliance certification and MSL-1 (Unlimited) moisture sensitivity level ratings. These certifications indicate compliance with hazardous substance restrictions and elimination of special moisture-controlled storage requirements. Both parts maintain active product status with Nisshinbo Micro Devices Inc.

Q: Can these parts be used interchangeably in new designs?

A: Yes. New designs may specify either part number. The R1180Q151B-TR-FE offers superior quiescent current performance for power-sensitive applications. The R1114Q151A-TR-FE offers lower dropout voltage for applications with limited input voltage headroom. Both parts satisfy identical functional requirements for 1.5V, 150mA linear voltage regulation in SC-82A packages.