BAS21S-TP Equivalent & Substitute Parts

Part Overview

The BAS21S-TP is a general-purpose diode array manufactured by Micro Commercial Co, configured as 1 pair series connection in a surface mount SOT-23-3 package. This component is rated for 250 V DC reverse voltage with 200 mA average rectified current per diode and operates across a junction temperature range of -55°C to 150°C. The part is Active status and RoHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part becomes unavailable or when alternative electrical characteristics better suit specific application requirements.

Substiute Parts

BAS21S-TP

Micro Commercial CoIn Stock: 1022BAS21S-TP Datasheet

Current PartRFQ

BAS21SLT1G

onsemiIn Stock: 155252BAS21SLT1G Datasheet

SimilarRFQ

BAS21S_R1_00001

Panjit International Inc.In Stock: 5847BAS21S_R1_00001 Datasheet

SimilarRFQ

BAV23S,215

Nexperia USA Inc.In Stock: 60369BAV23S,215 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BAS21S-TP is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Diode Configuration: 1 Pair Series Connection
• Package / Case: TO-236-3, SC-59, SOT-23-3 (surface mount)
• Mounting Type: Surface Mount
• Reverse Recovery Time (trr): 50 ns
• RoHS3 Compliance: Required
• Operating Temperature Range: Minimum -55°C to 150°C

Allowable Parameter Variations:

• Voltage - DC Reverse (Vr) (Max): Equal to or greater than 250 V
• Current - Average Rectified (Io): Equal to or greater than 200 mA
• Voltage - Forward (Vf): May vary within application tolerance
• Current - Reverse Leakage: May be lower than specified
• Packaging Format: Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® formats are interchangeable

Substitute parts must maintain identical diode configuration, package type, and thermal specifications. Electrical parameters may exceed the main part specifications without compromising compatibility, provided the application circuit design accommodates the higher ratings.

Parameter Comparison

Engineering Selection Recommendations

BAS21SLT1G (onsemi): This substitute provides equivalent 250 V reverse voltage rating with increased current capacity of 225 mA per diode. The part maintains identical reverse recovery time and thermal operating range. Forward voltage is specified at a higher test current (200 mA vs. 100 mA), and reverse leakage is reduced to 100 nA. This part is suitable for applications requiring higher current handling or lower leakage characteristics. Product status is Active with ROHS3 compliance and unlimited moisture sensitivity level.

BAS21S_R1_00001 (Panjit International Inc.): This substitute maintains identical electrical specifications to the main part with 250 V reverse voltage and 200 mA current rating. Forward voltage is lower at 1 V @ 100 mA, and reverse leakage is reduced to 100 nA. The maximum junction temperature is specified as 150°C without a minimum temperature range explicitly stated. This part is suitable for direct replacement in applications with identical electrical requirements. Product status is Active with ROHS3 compliance.

BAV23S,215 (Nexperia USA Inc.): This substitute operates at a reduced reverse voltage rating of 200 V with increased current capacity of 225 mA per diode. The forward voltage is 1 V @ 100 mA with reduced reverse leakage of 100 nA. This part is suitable only for applications where the 200 V reverse voltage rating is sufficient. The maximum junction temperature is specified as 150°C. Product status is Active with ROHS3 compliance and unlimited moisture sensitivity level.

All substitute parts maintain the SOT-23-3 surface mount package, identical diode configuration, and 50 ns reverse recovery time. Selection between substitutes depends on application voltage requirements, current demands, and leakage specifications.

Frequently Asked Questions (FAQ)

Q: Can BAS21SLT1G replace BAS21S-TP in all applications?

A: BAS21SLT1G is a direct substitute with equivalent 250 V reverse voltage rating and improved specifications (225 mA current, 100 nA leakage). It is suitable for all applications designed for BAS21S-TP. The higher current rating and lower leakage provide enhanced performance margins.

Q: What is the key difference between BAS21S_R1_00001 and the main part?

A: BAS21S_R1_00001 maintains identical electrical ratings (250 V, 200 mA) with lower forward voltage (1 V vs. 1.1 V) and reduced reverse leakage (100 nA vs. 1 µA). The operating temperature range specification differs, with BAS21S_R1_00001 specifying only the maximum temperature of 150°C.

Q: Is BAV23S,215 compatible with BAS21S-TP?

A: BAV23S,215 is compatible only for applications where the reverse voltage requirement does not exceed 200 V. The main part is rated for 250 V, so BAV23S,215 cannot be used as a substitute in circuits requiring the full 250 V rating. Current capacity is higher at 225 mA.

Q: Do all substitute parts use the same SOT-23-3 package?

A: Yes, all substitute parts use the TO-236-3, SC-59, SOT-23-3 surface mount package. Physical footprint and pin configuration are identical, allowing direct PCB placement compatibility.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® are different packaging and delivery formats for the same component. Both formats contain identical parts in the same SOT-23-3 package. Selection depends on assembly equipment compatibility and procurement volume requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all substitute parts listed are ROHS3 compliant with unlimited moisture sensitivity level (MSL 1). They meet the same environmental and regulatory requirements as the main part.

Q: Can I use BAS21SLT1G in a circuit designed for 200 mA maximum current?

A: Yes, BAS21SLT1G is rated for 225 mA and operates safely at 200 mA. The higher current rating does not create compatibility issues in circuits with lower current demands.

Q: What is the significance of reverse recovery time in these diodes?

A: All listed parts maintain 50 ns reverse recovery time, which determines switching speed and is critical for high-frequency applications. This parameter is identical across all substitutes, ensuring equivalent performance in switching circuits.