MASMBJ16A Equivalent & Substitute Parts

Part Overview

The MASMBJ16A is a unidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 16V reverse standoff voltage with a 26V maximum clamping voltage and 23.1A peak pulse current capability in the SMBJ (DO-214AA) package. The part is currently active in production with military-grade qualification per MIL-PRF-19500. Identification of equivalent and substitute parts is necessary to address supply chain continuity, inventory management, and design flexibility across manufacturing environments.

Substiute Parts

MASMBJ16A

Microchip TechnologyIn Stock: 1138MASMBJ16A Datasheet

Current PartRFQ

SMBJ16A-13

Diodes IncorporatedIn Stock: 838SMBJ16A-13 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MASMBJ16A is determined by strict equivalence across the following critical electrical and mechanical parameters:

• Voltage Rating: Reverse standoff voltage of 16V, breakdown minimum of 17.8V, and clamping maximum of 26V must be maintained
• Current Handling: Peak pulse current of 23.1A at 10/1000µs pulse duration
• Power Dissipation: Peak pulse power rating of 600W
• Package Compatibility: Surface-mount SMBJ package (DO-214AA) for mechanical and thermal compatibility
• Device Type: Unidirectional zener TVS diode configuration
• Temperature Range: Operating junction temperature capability

Substitute parts must satisfy all electrical parameters within the specified tolerances and maintain the same physical package footprint to ensure direct board-level replacement without design modification.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ16A-13 from Diodes Incorporated is electrically equivalent to the MASMBJ16A across all critical voltage, current, and power parameters. Both devices are unidirectional zener TVS diodes in the SMBJ (DO-214AA) surface-mount package with identical electrical specifications for reverse standoff voltage (16V), breakdown voltage (17.8V minimum), clamping voltage (26V maximum), and peak pulse current (23.1A).

Operational Considerations:

The MASMBJ16A maintains a lower operating temperature minimum of -65°C compared to the SMBJ16A-13 at -55°C. Applications requiring operation below -55°C junction temperature must use the MASMBJ16A to ensure compliance with the full specified temperature range.

Product Status Consideration:

The SMBJ16A-13 is listed as discontinued at DiGi Electronics. The MASMBJ16A remains in active production status with 1034 units in stock, making it the preferred choice for new designs and ongoing production requirements.

Compliance and Qualification:

The MASMBJ16A carries military-grade qualification per MIL-PRF-19500, providing additional assurance for applications requiring military or aerospace-level component certification. Both parts are RoHS non-compliant and REACH unaffected with identical moisture sensitivity levels (MSL 1, Unlimited).

Frequently Asked Questions (FAQ)

Q: Can the SMBJ16A-13 be used as a direct replacement for the MASMBJ16A in all applications?

A: The SMBJ16A-13 is electrically equivalent for voltage, current, and power specifications. However, applications operating at junction temperatures below -55°C require the MASMBJ16A to maintain full specification compliance. Additionally, the MASMBJ16A's active production status and military qualification may be required for specific procurement or certification requirements.

Q: What is the significance of the operating temperature range difference?

A: The MASMBJ16A operates from -65°C to 150°C junction temperature, while the SMBJ16A-13 operates from -55°C to 150°C. This 10°C difference at the lower temperature limit affects component selection only for applications with specified low-temperature operating requirements below -55°C.

Q: Are the SMBJ (DO-214AA) packages physically identical between manufacturers?

A: Yes. Both the MASMBJ16A and SMBJ16A-13 use the SMBJ package designation (DO-214AA), ensuring identical mechanical dimensions, footprint, and thermal characteristics for surface-mount board assembly.

Q: Why is the SMBJ16A-13 listed as discontinued?

A: The SMBJ16A-13 is discontinued at DiGi Electronics, indicating reduced availability through this distribution channel. The MASMBJ16A remains in active production with current inventory availability.

Q: Do both parts meet the same compliance standards?

A: Both parts are RoHS non-compliant and REACH unaffected with identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications. The MASMBJ16A includes military-grade qualification per MIL-PRF-19500, which is not specified for the SMBJ16A-13.

Q: What electrical parameters must remain constant for TVS diode substitution?

A: For the MASMBJ16A category, substitution requires equivalence in reverse standoff voltage (16V), breakdown voltage (17.8V minimum), clamping voltage (26V maximum), peak pulse current (23.1A), and peak pulse power (600W). Deviations in any of these parameters disqualify a part as a direct substitute.