R1180Q331C-TR-FE Equivalent & Substitute Parts

Part Overview

The R1180Q331C-TR-FE is a linear voltage regulator IC manufactured by Nisshinbo Micro Devices Inc., classified as a Power Management (PMIC) component. This device delivers a fixed positive 3.3V output at 150mA with a maximum dropout voltage of 0.4V at rated current. The part is actively produced and widely used in applications requiring stable low-voltage power supply regulation in compact surface-mount form factors.

Identification of equivalent and substitute parts becomes necessary when the primary part number experiences supply constraints, extended lead times, or when design flexibility permits selection from functionally compatible alternatives within the same product series. The R1180Q331C-TR-FE maintains active product status with substantial inventory availability, making it a reliable primary choice; however, parametric equivalents exist within the R1180x series that satisfy identical electrical and mechanical requirements.

Substiute Parts

R1180Q331C-TR-FE

Nisshinbo Micro Devices Inc.In Stock: 766R1180Q331C-TR-FE Datasheet

Current PartRFQ

R1180Q331B-TR-FE

Nisshinbo Micro Devices Inc.In Stock: 65392R1180Q331B-TR-FE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the R1180Q331C-TR-FE is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Fixed output voltage of 3.3V
• Output current rating of 150mA
• Maximum input voltage of 6V
• Maximum dropout voltage of 0.4V at 150mA
• Quiescent current of 1.5µA
• Over Current protection feature

Mechanical Equivalence Criteria:

• SC-82A / SOT-343 package type
• Surface mount mounting configuration
• Tape & Reel (TR) packaging format

Compliance Equivalence Criteria:

• ROHS3 Compliant status
• Moisture Sensitivity Level 1 (Unlimited)
• REACH Unaffected status
• Active product status

Parts meeting all three equivalence categories are classified as parametric equivalents and may be selected interchangeably in applications where the specified electrical, mechanical, and compliance requirements are satisfied. The R1180x series designation confirms compatibility within the manufacturer's product family.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: R1180Q331C-TR-FE

The R1180Q331C-TR-FE maintains active product status with 750 pieces in current inventory. This part satisfies all electrical, mechanical, and compliance requirements for applications requiring a 3.3V, 150mA linear voltage regulator in SC-82A packaging. ROHS3 compliance and MSL 1 rating confirm suitability for standard manufacturing and storage conditions.

Substitute Selection: R1180Q331B-TR-FE

The R1180Q331B-TR-FE is a parametric equivalent offering identical electrical performance and mechanical compatibility. This substitute provides significantly higher inventory availability (65,311 pieces), making it suitable for high-volume production scenarios or when extended supply assurance is required. The addition of an Enable control feature in the R1180Q331B-TR-FE provides functional flexibility not present in the main part; however, this feature is not required for basic voltage regulation operation and does not affect compatibility in applications that do not utilize enable functionality.

Both parts carry identical ROHS3 and REACH compliance certifications, confirming regulatory equivalence for global applications. Selection between these parts should be based on inventory availability, lead time requirements, and whether the Enable feature provides operational benefit to the target application.

Frequently Asked Questions (FAQ)

Q: Can the R1180Q331B-TR-FE be used as a direct replacement for the R1180Q331C-TR-FE?

A: Yes. The R1180Q331B-TR-FE is a parametric equivalent with identical output voltage (3.3V), output current (150mA), dropout voltage (0.4V @ 150mA), operating temperature range (-40°C to 85°C), and package type (SC-82A, SOT-343). Both parts are ROHS3 compliant with MSL 1 rating. The substitute part includes an Enable control feature not present in the main part; this feature is optional and does not affect basic regulator operation.

Q: What are the key electrical parameters that determine substitution eligibility?

A: Substitution eligibility is determined by matching output voltage (3.3V fixed), output current (150mA), maximum input voltage (6V), maximum dropout voltage (0.4V at 150mA), quiescent current (1.5µA), and protection features (Over Current). All substitute parts must meet these specifications exactly.

Q: Are the mechanical packages identical between the main part and substitute?

A: Yes. Both the R1180Q331C-TR-FE and R1180Q331B-TR-FE use the SC-82A / SOT-343 surface-mount package in Tape & Reel format. PCB footprints and reflow soldering profiles are identical.

Q: Do compliance certifications differ between these parts?

A: No. Both parts carry identical ROHS3 compliance, REACH Unaffected status, and Moisture Sensitivity Level 1 (Unlimited) ratings. Regulatory requirements are satisfied by either part.

Q: What is the significance of the Enable feature in the R1180Q331B-TR-FE?

A: The Enable feature allows external control of regulator output through a dedicated pin. In applications where this control is not required, the Enable pin can be tied to the supply voltage or left unconnected (depending on device design). The presence of this feature does not prevent substitution in applications that do not utilize it.

Q: How should I select between these two parts for new designs?

A: Selection should be based on inventory availability and lead time requirements. The R1180Q331B-TR-FE offers significantly higher stock levels (65,311 pieces versus 750 pieces). If the Enable feature provides operational benefit to your application, the R1180Q331B-TR-FE is the preferred choice. If enable functionality is not required, either part satisfies the electrical and mechanical requirements identically.

Q: Are there any temperature or environmental differences between these parts?

A: No. Both parts operate across the identical temperature range (-40°C to 85°C) and carry the same MSL 1 rating, confirming equivalent performance under standard manufacturing, storage, and operating conditions.