MMBD1401_D87Z Equivalent & Substitute Parts

Part Overview

The MMBD1401_D87Z is a general-purpose rectifier diode manufactured by onsemi, rated for 200 V DC reverse voltage and 200 mA average rectified current in a surface-mount SOT-23-3 package. This part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support and procurement continuity. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives within defined parameter tolerances suitable for the same application categories.

Substiute Parts

MMBD1401_D87Z

onsemiIn Stock: 889MMBD1401_D87Z Datasheet

Current PartRFQ

MMBD1401

onsemiIn Stock: 3427MMBD1401 Datasheet

Parametric EquivalentRFQ

BAS20-E3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 1144BAS20-E3-08 Datasheet

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BAS21-7-F

Diodes IncorporatedIn Stock: 86166BAS21-7-F Datasheet

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BAS21E6327HTSA1

Infineon TechnologiesIn Stock: 44151BAS21E6327HTSA1 Datasheet

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PMBD6050,215

NXP SemiconductorsIn Stock: 401162PMBD6050,215 Datasheet

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PMBD6050,235

Nexperia USA Inc.In Stock: 10970PMBD6050,235 Datasheet

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PMBD914,215

NXP SemiconductorsIn Stock: 23408PMBD914,215 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMBD1401_D87Z is determined by the following critical parameters:

Primary Substitution Criteria:

• Voltage - DC Reverse (Vr) (Max): Must equal or exceed 200 V
• Current - Average Rectified (Io): Must equal or exceed 200 mA
• Package / Case: Must be TO-236-3, SC-59, or SOT-23-3 (physically and electrically compatible)
• Mounting Type: Must be Surface Mount
• Technology: Standard or Fast Recovery diode technology acceptable

Secondary Compatibility Factors:

• Voltage - Forward (Vf): Variations acceptable within typical application tolerances
• Reverse Recovery Time (trr): 50 ns or faster acceptable
• Operating Temperature Range: Must support minimum 150°C junction temperature
• Reverse Leakage Current: Must not exceed specified maximum at rated voltage

Parts are grouped into two categories:

Parametric Equivalent: Identical electrical specifications and active product status (MMBD1401).

Similar/Functional Substitutes: Meet or exceed primary substitution criteria with minor parameter variations. These include BAS20-E3-08, BAS21-7-F, BAS21E6327HTSA1, PMBD6050,215, PMBD6050,235, and PMBD914,215. Parts with lower voltage ratings (PMBD6050 series at 70 V, PMBD914 at 100 V) are listed as cross-references but do not qualify as direct substitutes for 200 V applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: MMBD1401

The MMBD1401 (non-suffixed variant) is the direct parametric equivalent to MMBD1401_D87Z. This part maintains identical electrical specifications (200 V, 200 mA, 50 ns recovery time) and identical package configuration. The MMBD1401 carries Active product status and ROHS3 compliance certification, providing long-term design support and regulatory alignment. This is the preferred replacement for obsolete MMBD1401_D87Z applications.

Secondary Recommendation: BAS21-7-F

The BAS21-7-F manufactured by Diodes Incorporated meets all primary substitution criteria with 200 V reverse voltage rating and 200 mA current capacity. This part is Active status with ROHS3 compliance. Forward voltage is specified at 1.25 V versus 1 V for the original part, representing acceptable variation for general-purpose rectification applications. Reverse recovery time matches at 50 ns. Extensive inventory availability (86,100 pcs) supports procurement continuity.

Tertiary Recommendation: BAS21E6327HTSA1

The BAS21E6327HTSA1 manufactured by Infineon Technologies provides 200 V reverse voltage rating with enhanced current capacity (250 mA versus 200 mA). This part carries Last Time Buy status, indicating limited future availability. ROHS3 compliance is confirmed. Forward voltage specification at 1.25 V is acceptable for most applications. This part is suitable for applications requiring current margin above 200 mA.

Not Recommended for 200 V Applications:

PMBD6050,215, PMBD6050,235, and PMBD914,215 do not meet the 200 V reverse voltage requirement and are unsuitable for direct substitution in circuits requiring 200 V rating. These parts are listed as cross-references only and should not be selected for voltage-critical applications.

Not Recommended:

BAS20-E3-08 is rated for 150 V maximum reverse voltage, which does not meet the 200 V specification of the original part. This part is unsuitable for applications requiring full 200 V rating.

Frequently Asked Questions (FAQ)

Q: Can BAS20-E3-08 replace MMBD1401_D87Z in a 200 V application?

A: No. BAS20-E3-08 is rated for 150 V maximum reverse voltage. The MMBD1401_D87Z is rated for 200 V. Using BAS20-E3-08 in a 200 V circuit will result in diode failure or leakage. This part is suitable only for applications with maximum voltage requirements of 150 V or less.

Q: What is the difference between MMBD1401_D87Z and MMBD1401?

A: Both parts have identical electrical specifications (200 V, 200 mA, 50 ns recovery time, SOT-23-3 package). The primary difference is product status: MMBD1401_D87Z is obsolete, while MMBD1401 is active. MMBD1401 includes ROHS3 compliance certification. For new designs and ongoing procurement, MMBD1401 is the recommended choice.

Q: Are PMBD6050 and PMBD914 suitable substitutes?

A: No. PMBD6050,215 and PMBD6050,235 are rated for 70 V maximum reverse voltage. PMBD914,215 is rated for 100 V. Neither part meets the 200 V requirement of MMBD1401_D87Z. These parts are listed in the original part's cross-reference data but are not functional substitutes for 200 V applications. They are suitable only for lower-voltage circuits.

Q: Can I use BAS21-7-F as a direct replacement?

A: Yes, with minor parameter variation. BAS21-7-F meets all primary substitution criteria: 200 V reverse voltage, 200 mA current capacity, SOT-23-3 package, and 50 ns recovery time. Forward voltage is specified at 1.25 V compared to 1 V for the original part. This 0.25 V difference is acceptable in general-purpose rectification circuits. BAS21-7-F is Active status with ROHS3 compliance and extensive inventory availability.

Q: What does "Last Time Buy" status mean for BAS21E6327HTSA1?

A: Last Time Buy indicates that Infineon Technologies has announced end-of-life for this part. While currently available (44,100 pcs in stock), future procurement may become difficult or impossible. For new designs requiring long-term support, MMBD1401 or BAS21-7-F are preferred. BAS21E6327HTSA1 is suitable for existing designs with near-term production requirements.

Q: Are all substitute parts in SOT-23-3 package?

A: Yes. All parts listed in this reference maintain the TO-236-3, SC-59, or SOT-23-3 package designation, ensuring mechanical and electrical compatibility with existing PCB layouts and assembly processes. Package compatibility is a primary substitution criterion.

Q: What is the significance of reverse recovery time (trr)?

A: Reverse recovery time determines switching speed. MMBD1401_D87Z specifies 50 ns. All recommended substitutes (MMBD1401, BAS21-7-F, BAS21E6327HTSA1) also specify 50 ns, ensuring equivalent switching performance. PMBD series parts specify 4 ns (faster), which is acceptable but not required for general-purpose applications.

Q: Can I use a part with higher current rating than 200 mA?

A: Yes. BAS21E6327HTSA1 is rated for 250 mA, exceeding the 200 mA requirement. Higher current rating provides design margin and does not create compatibility issues. The circuit will operate within the part's safe operating area.