R1114Q281A-TR-FE Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The R1114Q281A-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 2.8V at 150mA output current with integrated over-current protection and enable control features. The part is supplied in Tape & Reel packaging with SC-82A (SOT-343) surface mount configuration.

Equivalent and substitute parts are identified when components share identical or compatible electrical specifications and mechanical form factors, enabling direct replacement in circuit applications without design modification.

Substiute Parts

R1114Q281A-TR-FE

Nisshinbo Micro Devices Inc.In Stock: 950R1114Q281A-TR-FE Datasheet

Current PartRFQ

R1180Q281B-TR-FE

Nisshinbo Micro Devices Inc.In Stock: 6626R1180Q281B-TR-FE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the R1114Q281A-TR-FE are identified based on the following critical parameters that determine functional equivalence:

Electrical Compatibility Criteria:

• Fixed output voltage of 2.8V
• Output current rating of 150mA
• Maximum input voltage of 6V
• Positive output configuration with single regulator
• Enable control feature and over-current protection
• Operating temperature range of -40°C to 85°C

Mechanical Compatibility Criteria:

• Surface mount packaging
• SC-82A / SOT-343 package form factor
• Tape & Reel supply format

The R1180Q281B-TR-FE meets all electrical and mechanical compatibility requirements, with allowable variance in quiescent current and voltage dropout specifications within acceptable engineering tolerances for this regulator class.

Parameter Comparison

Engineering Selection Recommendations

R1114Q281A-TR-FE (Primary Part):

• Active product status with 913 units in stock
• RoHS Compliant certification
• Lower quiescent current (95 µA) suitable for applications requiring reduced standby power consumption
• Tighter voltage dropout specification (0.35V @ 150mA)

R1180Q281B-TR-FE (Substitute Part):

• Active product status with 6518 units in stock
• ROHS3 Compliant certification with REACH Unaffected status
• Significantly lower quiescent current (1.5 µA) for ultra-low power standby applications
• Slightly higher voltage dropout (0.4V @ 150mA) remains within acceptable operating margins for 2.8V fixed output regulation

Both parts are manufactured by Nisshinbo Micro Devices Inc. and maintain identical output voltage, current rating, input voltage limits, control features, and protection mechanisms. Selection between these parts depends on inventory availability and specific application requirements regarding quiescent current performance and regulatory compliance documentation.

Frequently Asked Questions (FAQ)

Q: Can the R1180Q281B-TR-FE directly replace the R1114Q281A-TR-FE in existing designs?

A: Yes. Both parts share identical output voltage (2.8V), output current (150mA), input voltage rating (6V), control features (Enable), protection features (Over Current), operating temperature range (-40°C to 85°C), and package form factor (SC-82A, SOT-343). The voltage dropout difference of 0.05V (0.35V vs 0.4V) is within acceptable tolerance for fixed output regulator applications.

Q: What is the primary difference between these two linear voltage regulators?

A: The R1180Q281B-TR-FE features significantly lower quiescent current (1.5 µA) compared to the R1114Q281A-TR-FE (95 µA). This makes the R1180 variant more suitable for battery-powered or ultra-low power standby applications where minimizing idle current consumption is critical.

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

A: Yes. Both the R1114Q281A-TR-FE and R1180Q281B-TR-FE are supplied in Tape & Reel (TR) format with SC-82A (SOT-343) surface mount package configuration, enabling identical PCB assembly and handling procedures.

Q: What are the RoHS compliance differences?

A: The R1114Q281A-TR-FE carries RoHS Compliant certification, while the R1180Q281B-TR-FE carries ROHS3 Compliant certification with REACH Unaffected status. Both meet environmental regulatory requirements for their respective compliance standards.

Q: Which part should be selected for new designs?

A: Selection depends on application-specific requirements. For applications prioritizing minimal quiescent current and maximum regulatory compliance documentation, the R1180Q281B-TR-FE is appropriate. For applications where the lower quiescent current of the R1180 is not required, either part is suitable based on inventory availability and cost considerations.

Q: Are there any thermal or mechanical differences between these parts?

A: No. Both parts share identical operating temperature range (-40°C to 85°C), moisture sensitivity level (MSL 1 - Unlimited), and mechanical form factor (SC-82A, SOT-343 surface mount package).