R1160N121A-TR-FE Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The R1160N121A-TR-FE is an active linear voltage regulator IC manufactured by Nisshinbo Micro Devices Inc., classified as a Power Management (PMIC) component. This device provides a fixed positive 1.2V output with 200mA current capacity in a surface-mount SOT-23-5 package. The regulator is designed for applications requiring stable low-voltage power delivery with integrated enable control and over-current protection features.

Equivalent and substitute parts are identified to provide design flexibility, support supply chain continuity, and accommodate inventory availability across different manufacturing sources while maintaining electrical and mechanical compatibility.

Substiute Parts

R1160N121A-TR-FE

Nisshinbo Micro Devices Inc.In Stock: 1249R1160N121A-TR-FE Datasheet

Current PartRFQ

AP2121AK-1.2TRG1

Diodes IncorporatedIn Stock: 39188AP2121AK-1.2TRG1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the R1160N121A-TR-FE are identified based on strict parametric equivalence across the following critical criteria:

Electrical Compatibility Requirements:

• Fixed output voltage of 1.2V
• Output current rating of 200mA
• Maximum input voltage of 6V
• Operating temperature range of -40°C to 85°C
• Positive output configuration with single regulator
• Enable control feature
• Over-current protection feature
• PSRR of 70dB at 1kHz

Mechanical Compatibility Requirements:

• SOT-23-5 package (SC-74A, SOT-753)
• Surface-mount technology
• Tape & Reel packaging format

Compliance Requirements:

• RoHS compliance status
• Active product status

The AP2121AK-1.2TRG1 meets all electrical and mechanical compatibility criteria. Variations in voltage dropout (0.9V versus 0.5V) and quiescent current (50µA versus 70µA) remain within acceptable operational tolerances for this component category and do not preclude substitution in standard applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: R1160N121A-TR-FE

The R1160N121A-TR-FE is the specified component with active product status and RoHS compliance. This part features a lower maximum voltage dropout of 0.5V at 200mA and lower quiescent current of 70µA, providing superior efficiency characteristics in power-constrained applications.

Substitute Part: AP2121AK-1.2TRG1

The AP2121AK-1.2TRG1 from Diodes Incorporated is a parametric equivalent with active product status and ROHS3 compliance. This substitute maintains identical output voltage, current rating, input voltage limits, operating temperature range, and package configuration. The AP2121AK-1.2TRG1 exhibits a higher maximum voltage dropout of 0.9V at 200mA and lower quiescent current of 50µA compared to the primary part.

Selection Criteria:

Both parts are suitable for direct substitution in applications where the specified electrical parameters are met. Selection between the primary and substitute part should be based on:

• Supply chain availability and lead time requirements
• Inventory status and procurement timelines
• Application-specific power efficiency requirements
• Compliance certification requirements for end-use applications

Both parts maintain identical functional performance in standard linear regulator applications with 1.2V fixed output and 200mA current delivery.

Frequently Asked Questions (FAQ)

Q: Can the AP2121AK-1.2TRG1 be used as a direct replacement for the R1160N121A-TR-FE?

A: Yes. Both parts are parametric equivalents with identical output voltage (1.2V), output current (200mA), input voltage rating (6V maximum), operating temperature range (-40°C to 85°C), package type (SOT-23-5), and control/protection features (Enable, Over-Current). Both are active products with RoHS compliance.

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

A: The R1160N121A-TR-FE has a maximum voltage dropout of 0.5V at 200mA, while the AP2121AK-1.2TRG1 has a maximum voltage dropout of 0.9V at 200mA. This difference affects power dissipation and efficiency in applications with limited input voltage headroom.

Q: Are the packages identical?

A: Yes. Both parts use the SOT-23-5 package (SC-74A, SOT-753) in surface-mount configuration with Tape & Reel packaging format. Pin-to-pin compatibility is maintained.

Q: What is the difference in quiescent current?

A: The R1160N121A-TR-FE draws 70µA quiescent current, while the AP2121AK-1.2TRG1 draws 50µA. The lower quiescent current of the substitute part reduces standby power consumption in battery-powered applications.

Q: Are there any compliance differences?

A: The R1160N121A-TR-FE is RoHS Compliant with Moisture Sensitivity Level 1 (Unlimited). The AP2121AK-1.2TRG1 is ROHS3 Compliant with Moisture Sensitivity Level 3 (168 Hours). Both meet RoHS requirements; the substitute part has more stringent moisture handling requirements during storage and assembly.

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

A: Yes. Both parts are pin-compatible in the SOT-23-5 package and maintain identical electrical specifications for output voltage, current rating, and control features. No PCB layout modifications are required for substitution.

Q: What is the PSRR specification and is it identical?

A: PSRR (Power Supply Rejection Ratio) is 70dB at 1kHz for both parts. This specification indicates the regulator's ability to reject power supply noise and is identical between the primary and substitute part.