MMBD1703 Equivalent & Substitute Parts

Part Overview

The MMBD1703 is a general-purpose diode array manufactured by onsemi, configured as 1 pair series connection in a surface mount SOT-23-3 package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design requirements and production continuity. The MMBD1703 operates at 30 V DC reverse voltage with 50 mA average rectified current per diode, suitable for small-signal applications requiring compact form factors.

Substiute Parts

MMBD1703

onsemiIn Stock: 9449MMBD1703 Datasheet

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MMBD7000-TP

Micro Commercial CoIn Stock: 3323MMBD7000-TP Datasheet

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PMBD7000,215

Nexperia USA Inc.In Stock: 4453PMBD7000,215 Datasheet

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PMBD7000,235

NXP USA Inc.In Stock: 16675PMBD7000,235 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MMBD1703 are selected based on compatibility across the following critical parameters:

Mandatory Compatibility Criteria:

• Diode Configuration: 1 Pair Series Connection (identical topology required)
• Package / Case: TO-236-3, SC-59, SOT-23-3 (physical and electrical footprint compatibility)
• Mounting Type: Surface Mount (assembly process compatibility)
• Operating Temperature - Junction: 150°C maximum (thermal envelope)

Performance Envelope Criteria: Substitute parts must meet or exceed the MMBD1703 specifications in voltage and current ratings. The original part operates at 30 V / 50 mA. Substitute parts with higher voltage and current ratings remain functionally compatible in applications designed for the MMBD1703, as they operate within the same package and configuration.

All identified substitute parts meet these criteria and are available from active product lines, ensuring design continuity and supply chain reliability.

Parameter Comparison

Engineering Selection Recommendations

MMBD7000-TP (Micro Commercial Co) is suitable for applications requiring active product status with ROHS3 compliance. This part offers 100 V / 200 mA performance in the identical SOT-23-3 package. Tape & Reel packaging supports automated assembly processes.

PMBD7000,215 (Nexperia USA Inc.) provides 100 V / 215 mA performance with ROHS3 compliance and active product status. Cut Tape & Digi-Reel packaging accommodates both manual and automated assembly workflows. This part is classified as fast recovery with trr of 4 ns.

PMBD7000,235 (NXP USA Inc.) delivers 100 V / 215 mA performance with active product status. This variant offers the highest inventory availability (16,638 pcs) among substitute options. SOT-23 packaging maintains footprint compatibility with the original MMBD1703.

All three substitute parts are manufactured by established suppliers with active product lines, ensuring long-term availability and supply chain stability. Selection between substitutes depends on packaging format requirements, inventory availability, and compliance certifications applicable to the end application.

Frequently Asked Questions (FAQ)

Q: Can MMBD7000-TP, PMBD7000,215, and PMBD7000,235 be used interchangeably with MMBD1703?

A: Yes, within the constraints of the application design. All three parts share identical diode configuration (1 pair series connection) and package format (TO-236-3, SC-59, SOT-23-3). The substitute parts operate at higher voltage (100 V vs. 30 V) and current (200-215 mA vs. 50 mA) ratings. Applications designed for MMBD1703 specifications will function with these substitutes. Applications requiring the exact 30 V / 50 mA envelope must evaluate whether the higher ratings introduce unintended circuit behavior.

Q: What is the primary difference between PMBD7000,215 and PMBD7000,235?

A: Both parts are manufactured by NXP-related entities and share identical electrical specifications (100 V / 215 mA). The primary difference is packaging format: PMBD7000,215 is supplied in Cut Tape & Digi-Reel format, while PMBD7000,235 is supplied in standard SOT-23 packaging. Inventory availability also differs, with PMBD7000,235 showing significantly higher stock levels (16,638 pcs vs. 4,400 pcs).

Q: Are there thermal or operating temperature differences between the MMBD1703 and substitute parts?

A: All parts share a maximum junction operating temperature of 150°C. The MMBD7000-TP specifies an operating temperature range of -55°C to 150°C, providing extended low-temperature performance. The MMBD1703 and PMBD7000 variants specify only the maximum junction temperature of 150°C without explicit minimum temperature ratings.

Q: How do reverse recovery times compare between the original and substitute parts?

A: The MMBD1703 specifies 700 ps reverse recovery time (trr), while all three substitute parts specify 4 ns. The substitute parts exhibit slower reverse recovery, which may affect high-frequency switching applications. Applications operating at frequencies where reverse recovery time is critical must evaluate this parameter against circuit requirements.

Q: What packaging options are available for the substitute parts?

A: MMBD7000-TP is supplied in Tape & Reel (TR) format for automated assembly. PMBD7000,215 is supplied in Cut Tape (CT) & Digi-Reel format, supporting both manual and automated processes. PMBD7000,235 is supplied in standard SOT-23 packaging. All maintain the same physical footprint (TO-236-3, SC-59, SOT-23-3).

Q: Are all substitute parts RoHS compliant?

A: MMBD7000-TP and PMBD7000,215 are explicitly ROHS3 compliant. PMBD7000,235 does not specify RoHS status in the provided data. Applications requiring RoHS compliance should confirm compliance status with the supplier or select MMBD7000-TP or PMBD7000,215.

Q: What is the current leakage difference between the original and substitute parts?

A: The MMBD1703 specifies 50 nA reverse leakage at 20 V. Substitute parts specify higher leakage: MMBD7000-TP at 1 µA @ 50 V and PMBD7000 variants at 500 nA @ 100 V. Applications sensitive to leakage current must evaluate whether the higher leakage of substitute parts affects circuit performance.