MMBD1505-TP Equivalent & Substitute Parts

Part Overview

The MMBD1505-TP is a general-purpose diode array manufactured by Micro Commercial Co, configured as a 1 Pair Common Anode design in a surface mount SOT-23-3 package. This component operates at a maximum reverse voltage of 180 V with an average rectified current of 200 mA per diode, suitable for small-signal applications. The part is currently in active production status with RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical and mechanical parameters are required for circuit design flexibility, inventory management, or supply chain continuity while maintaining functional compatibility within specified operating ranges.

Substiute Parts

MMBD1505-TP

Micro Commercial CoIn Stock: 1012MMBD1505-TP Datasheet

Current PartRFQ

BAS35

Diotec SemiconductorIn Stock: 65167BAS35 Datasheet

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MMBD1505A

Fairchild SemiconductorIn Stock: 35204MMBD1505A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MMBD1505-TP is determined by strict alignment of the following electrical and mechanical parameters:

Primary Compatibility Criteria:

• Diode configuration must be 1 Pair Common Anode
• Package type must be TO-236-3, SC-59, or SOT-23-3
• Mounting type must be Surface Mount
• Current rating must be 200 mA per diode (Average Rectified)
• Operating temperature range must encompass -55°C to 150°C junction temperature
• Technology classification must be Standard

Voltage Rating Consideration: Substitute parts are grouped based on maximum reverse voltage (Vr) capability. The MMBD1505-TP operates at 180 V maximum reverse voltage. Substitute parts with equal or higher voltage ratings maintain full functional compatibility. Parts with lower voltage ratings operate within reduced voltage margins and are identified separately.

Forward Voltage Tolerance: Forward voltage drop (Vf) at 200 mA is a secondary parameter affecting circuit performance. Variations within the specified range do not prevent substitution but should be evaluated in applications with tight voltage budgets.

Parameter Comparison

Engineering Selection Recommendations

MMBD1505A (Fairchild Semiconductor) - Full Compatibility Substitute

The MMBD1505A is a direct substitute for the MMBD1505-TP. This part maintains identical diode configuration, current rating, and package specifications. The MMBD1505A provides a higher maximum reverse voltage rating of 200 V compared to the MMBD1505-TP at 180 V, ensuring operation within or above the original design voltage margin. Forward voltage is lower at 1.1 V versus 1.3 V, resulting in reduced power dissipation. Both parts share identical reverse leakage characteristics at 10 nA. The MMBD1505A is in active production status and suitable for direct replacement in existing designs.

BAS35 (Diotec Semiconductor) - Voltage-Reduced Substitute

The BAS35 is a functional substitute with identical diode configuration, current rating, and package specifications. However, the BAS35 operates at a maximum reverse voltage of 90 V, which is 50% lower than the MMBD1505-TP at 180 V. This part is suitable only for applications where the circuit design voltage does not exceed 90 V. The BAS35 offers lower forward voltage at 1.0 V and reduced reverse leakage at 100 nA at its rated voltage. The BAS35 is in active production status. RoHS compliance status is not applicable per manufacturer specification.

Compliance and Certification Status

The MMBD1505-TP is RoHS3 compliant with REACH Unaffected status. The MMBD1505A maintains EAR99 ECCN classification. The BAS35 has undefined REACH status and not applicable RoHS classification. Component selection should account for end-application regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the BAS35 replace the MMBD1505-TP in all applications?

A: The BAS35 is a functional substitute only for applications operating at 90 V or below. The MMBD1505-TP is rated for 180 V maximum reverse voltage. If the circuit design requires operation above 90 V, the BAS35 will not provide adequate voltage margin and substitution is not permitted.

Q: What is the difference between the MMBD1505-TP and MMBD1505A?

A: Both parts share identical diode configuration, current rating, and package type. The MMBD1505A provides higher maximum reverse voltage (200 V versus 180 V) and lower forward voltage drop (1.1 V versus 1.3 V). The MMBD1505A is a direct substitute with improved electrical performance.

Q: Are all three parts available in the same package?

A: Yes. The MMBD1505-TP, MMBD1505A, and BAS35 are all available in TO-236-3, SC-59, and SOT-23-3 packages as surface mount components. Pin configuration and footprint are identical, permitting direct PCB layout compatibility.

Q: What is the operating temperature range for these diodes?

A: The MMBD1505-TP and BAS35 operate across a junction temperature range of -55°C to 150°C. The MMBD1505A specifies a maximum junction temperature of 150°C. All three parts are suitable for industrial and commercial temperature environments.

Q: How do forward voltage differences affect circuit design?

A: Forward voltage drop varies among the three parts: MMBD1505-TP at 1.3 V, MMBD1505A at 1.1 V, and BAS35 at 1.0 V, all measured at 200 mA. In applications with tight voltage budgets or high current paths, the lower forward voltage of the BAS35 or MMBD1505A reduces power dissipation. Circuit designs must account for these variations if voltage regulation or thermal management is critical.

Q: What is the reverse leakage current specification?

A: The MMBD1505-TP and MMBD1505A both specify 10 nA reverse leakage at their respective rated voltages (180 V and 180 V). The BAS35 specifies 100 nA at 90 V. Higher reverse leakage in the BAS35 may affect high-impedance circuit applications.

Q: Are these parts suitable for high-frequency switching applications?

A: All three parts are classified as small-signal diodes with current ratings of 200 mA or less and any speed classification. They are not optimized for high-frequency switching. Applications requiring fast switching characteristics should consult detailed reverse recovery time specifications.