R1202L421A-TR Equivalent & Substitute Parts

Part Overview

The R1202L421A-TR is a boost switching regulator IC manufactured by Nisshinbo Micro Devices Inc., classified as a Power Management (PMIC) component. This device functions as a step-up converter with positive adjustable output, designed to deliver 700mA switching current across a single output channel. The part is currently in active production status with 3014 units available in new original inventory.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across critical operating parameters. The R1202L421A-TR has one parametric equivalent available due to differing maximum output voltage specifications while maintaining core functionality and package compatibility.

Substiute Parts

R1202L421A-TR

Nisshinbo Micro Devices Inc.In Stock: 3052R1202L421A-TR Datasheet

Current PartRFQ

R1202L721A-TR

Nisshinbo Micro Devices Inc.In Stock: 9256R1202L721A-TR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the R1202L421A-TR is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Manufacturer: Nisshinbo Micro Devices Inc.
• Function: Step-Up (Boost) topology
• Output Configuration: Positive Adjustable
• Number of Outputs: 1
• Input Voltage Range: 2.3V to 5.5V
• Output Voltage Minimum: 1V
• Output Current: 700mA (Switch)
• Switching Frequency: 1.2MHz
• Operating Temperature: -40°C to 85°C
• Package / Case: 6-XFDFN Exposed Pad
• Supplier Device Package: DFN1616-6B
• Mounting Type: Surface Mount
• Packaging Format: Tape & Reel (TR)

Variable Parameters Allowing Substitution:

• Maximum Output Voltage: The R1202L421A-TR specifies 17V maximum output, while the R1202L721A-TR specifies 23V maximum output. Both devices maintain identical input and output minimum specifications, allowing substitution in applications requiring output voltages within the 1V to 17V range.

The R1202L721A-TR is a parametric equivalent that maintains all core electrical and mechanical specifications while offering extended maximum output voltage capability.

Parameter Comparison

Engineering Selection Recommendations

R1202L421A-TR Selection Criteria:

• Applications requiring maximum output voltage up to 17V
• Designs with established component qualification to this specific part number
• Inventory availability of 3014 units supports immediate procurement
• RoHS Compliant status meets standard environmental requirements
• Active production status ensures long-term supply continuity

R1202L721A-TR Selection Criteria:

• Applications requiring maximum output voltage up to 23V
• Designs where extended output voltage range provides design margin
• Inventory availability of 9152 units supports high-volume procurement
• ROHS3 Compliant status meets current environmental standards
• REACH Unaffected status provides additional regulatory clarity
• Active production status ensures long-term supply continuity

Substitution Guidance: The R1202L721A-TR functions as a direct substitute for the R1202L421A-TR in applications where the output voltage requirement does not exceed 17V. The extended maximum output voltage specification of the R1202L721A-TR does not degrade performance in lower-voltage applications. Both devices share identical input voltage specifications, output current capability, switching frequency, thermal operating range, and physical package dimensions. Selection between these parts depends solely on the maximum output voltage requirement of the target application and inventory availability considerations.

Frequently Asked Questions (FAQ)

Q: Can the R1202L721A-TR replace the R1202L421A-TR in existing designs?

A: Yes, the R1202L721A-TR is a direct substitute for the R1202L421A-TR in applications where the required output voltage does not exceed 17V. The extended maximum output voltage specification (23V versus 17V) does not affect performance in lower-voltage applications. All other electrical and mechanical parameters are identical.

Q: What is the primary difference between these two parts?

A: The maximum output voltage specification differs. The R1202L421A-TR supports output voltages up to 17V, while the R1202L721A-TR supports output voltages up to 23V. All other specifications, including input voltage range, output current, switching frequency, package type, and operating temperature range, are identical.

Q: Are the physical packages identical?

A: Yes, both parts use the 6-XFDFN Exposed Pad package with DFN1616-6B supplier device package designation. They are pin-compatible and have identical footprints for PCB layout purposes.

Q: Do these parts have different RoHS compliance levels?

A: The R1202L421A-TR carries RoHS Compliant status, while the R1202L721A-TR carries ROHS3 Compliant status. Both meet RoHS requirements; ROHS3 represents the current standard. The R1202L721A-TR also includes REACH Unaffected status for additional regulatory documentation.

Q: What is the switching frequency for both parts?

A: Both the R1202L421A-TR and R1202L721A-TR operate at a switching frequency of 1.2MHz.

Q: Are both parts currently in production?

A: Yes, both parts maintain active production status with Nisshinbo Micro Devices Inc. The R1202L421A-TR has 3014 units in stock, and the R1202L721A-TR has 9152 units in stock.

Q: What is the moisture sensitivity level for these components?

A: Both parts have Moisture Sensitivity Level (MSL) 1, which indicates unlimited shelf life under normal storage conditions.

Q: Can these parts be used interchangeably in all applications?

A: These parts can be used interchangeably only in applications where the maximum output voltage requirement does not exceed 17V. For applications requiring output voltages between 17V and 23V, only the R1202L721A-TR is suitable.