S-1200B21-M5T1G Equivalent & Substitute Parts

Part Overview

The S-1200B21-M5T1G is a linear voltage regulator IC manufactured by ABLIC Inc., delivering a fixed 2.1V output at 150mA in a SOT-23-5 surface mount package. This device is classified as not for new designs, indicating it has been superseded in ABLIC's product line. Finding equivalent and substitute parts is necessary to support existing designs, ensure supply chain continuity, and identify active alternatives that maintain electrical and mechanical compatibility.

Substiute Parts

S-1200B21-M5T1G

ABLIC Inc.In Stock: 725S-1200B21-M5T1G Datasheet

Current PartRFQ

S-1200B21-M5T1U

ABLIC Inc.In Stock: 1079S-1200B21-M5T1U Datasheet

Parametric EquivalentRFQ

XC6209F212MR-G

Torex Semiconductor LtdIn Stock: 903XC6209F212MR-G Datasheet

SimilarRFQ

XC6204B212MR-G

Torex Semiconductor LtdIn Stock: 1034XC6204B212MR-G Datasheet

Parametric EquivalentRFQ

XC6209B212MR-G

Torex Semiconductor LtdIn Stock: 856XC6209B212MR-G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the S-1200B21-M5T1G is determined by the following critical parameters:

• Output voltage: 2.1V fixed
• Output current capability: 150mA minimum
• Input voltage tolerance: 10V maximum
• Package compatibility: SOT-23-5 or equivalent pinout
• Dropout voltage: acceptable range for application requirements
• Quiescent current and PSRR: secondary performance metrics
• Compliance: ROHS3, REACH Unaffected, MSL 1

Substitute parts are grouped into two categories:

Parametric Equivalents: Parts with identical or superior electrical specifications and compatible packaging, suitable for direct replacement without circuit modification.

Similar Parts: Parts with enhanced performance characteristics (higher output current) that maintain core voltage and package compatibility but may require application-level verification.

Parameter Comparison

Engineering Selection Recommendations

S-1200B21-M5T1U (ABLIC Inc.)

This part is a parametric equivalent with identical electrical specifications and the same SOT-23-5 package. It carries Active product status, ensuring long-term availability and supply chain support. This is the primary recommendation for direct replacement in existing designs. All compliance certifications match the original part.

XC6209B212MR-G (Torex Semiconductor Ltd)

This Torex part maintains the 2.1V output, 150mA current rating, and 0.33V dropout voltage. It is packaged in SOT-25, which differs from the original SOT-23-5. The part is Active and fully compliant. The quiescent current is elevated to 50 µA compared to 1 µA in the original, which may impact low-power applications. PCB layout modification is required due to package change.

XC6204B212MR-G (Torex Semiconductor Ltd)

This part provides 2.1V output at 150mA in SOT-25-5 packaging. The dropout voltage is 0.41V, higher than the original 0.31V specification. Quiescent current is 120 µA, significantly elevated. This part is suitable only when the higher dropout voltage and quiescent current are acceptable for the application. PCB layout modification is required.

XC6209F212MR-G (Torex Semiconductor Ltd)

This part delivers 2.1V output at 300mA, providing enhanced current capability. It is packaged in SOT-25 and carries Active status. The dropout voltage is 0.33V and quiescent current is 50 µA. This part is suitable for applications requiring higher output current while maintaining the 2.1V output specification. PCB layout modification is required due to package change.

Frequently Asked Questions (FAQ)

Q: Can S-1200B21-M5T1U be used as a direct replacement for S-1200B21-M5T1G?

A: Yes. S-1200B21-M5T1U is a parametric equivalent with identical output voltage (2.1V), output current (150mA), dropout voltage (0.31V @ 100mA), and package (SOT-23-5). No circuit or PCB modifications are required. The part is Active, ensuring supply availability.

Q: What is the primary difference between the ABLIC and Torex substitute options?

A: The ABLIC S-1200B21-M5T1U maintains identical specifications and packaging. Torex parts (XC6209B212MR-G, XC6204B212MR-G, XC6209F212MR-G) are packaged in SOT-25 variants, requiring PCB layout changes. Torex parts also exhibit higher quiescent currents and, in some cases, higher dropout voltages.

Q: Can XC6209F212MR-G replace S-1200B21-M5T1G in any application?

A: XC6209F212MR-G maintains the 2.1V output and 10V maximum input voltage. However, it is packaged in SOT-25 instead of SOT-23-5, requiring PCB redesign. The higher output current (300mA vs. 150mA) is beneficial for applications requiring additional current margin. Verify that the application can accommodate the package change and higher quiescent current (50 µA).

Q: What are the package differences between SOT-23-5 and SOT-25?

A: SOT-23-5 and SOT-25 are both surface mount packages with different physical dimensions and pin configurations. Direct PCB footprint substitution is not possible. Layout redesign is required when switching between these packages. Consult device datasheets for exact pinout and footprint specifications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (S-1200B21-M5T1U, XC6209B212MR-G, XC6204B212MR-G, XC6209F212MR-G) are ROHS3 Compliant and REACH Unaffected, matching the compliance profile of the original part.

Q: Which substitute part has the lowest quiescent current?

A: S-1200B21-M5T1U maintains the original specification of 1 µA quiescent current. Torex alternatives (XC6209B212MR-G and XC6209F212MR-G) have 50 µA, while XC6204B212MR-G has 120 µA. For battery-powered or ultra-low-power applications, S-1200B21-M5T1U is the optimal choice.

Q: What is the impact of higher dropout voltage in XC6204B212MR-G?

A: XC6204B212MR-G has a dropout voltage of 0.41V compared to 0.31V in the original part. This means the input voltage must be at least 0.41V higher than the 2.1V output to maintain regulation. In applications with tight input voltage margins, this higher dropout may cause regulation loss. Verify input voltage headroom before selection.