MASMBJ48CAE3 Equivalent & Substitute Parts

Part Overview

The MASMBJ48CAE3 is a transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This bidirectional Zener diode operates with a 48V reverse standoff voltage and provides clamping at 77.4V maximum, with a peak pulse current rating of 7.7A. The component is housed in a DO-214AA (SMB) package and is qualified to MIL-PRF-19500 military standards. The part remains in active production status with 960 units currently in stock. Equivalent and substitute parts are identified to support procurement flexibility, design redundancy, and supply chain continuity when the primary part becomes unavailable or when alternative sourcing is required.

Substiute Parts

MASMBJ48CAE3

Microchip TechnologyIn Stock: 1028MASMBJ48CAE3 Datasheet

Current PartRFQ

SMBJ48CA-13

Diodes IncorporatedIn Stock: 944SMBJ48CA-13 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MASMBJ48CAE3 is determined by electrical and mechanical parameter equivalence within the TVS diode category. The critical parameters that define substitutability are:

Electrical Parameters:

• Voltage - Reverse Standoff (Typ): 48V
• Voltage - Breakdown (Min): 53.3V
• Voltage - Clamping (Max) @ Ipp: 77.4V
• Current - Peak Pulse (10/1000µs): 7.7A
• Power - Peak Pulse: 600W
• Type: Zener
• Bidirectional Channels: 1

Mechanical Parameters:

• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount

Environmental Parameters:

• Operating Temperature Range: -65°C to 150°C (TJ)

The substitute part SMBJ48CA-13 from Diodes Incorporated matches all critical electrical parameters and maintains the same surface-mount package configuration. Both parts belong to the SMBJ base product series and are classified as general-purpose TVS diodes. Substitution is valid when these parameters align across the main part and candidate substitute.

Parameter Comparison

Engineering Selection Recommendations

MASMBJ48CAE3 (Primary Part - Microchip Technology)

The MASMBJ48CAE3 is the recommended primary selection. This part maintains active production status with confirmed inventory of 960 units in stock. It carries MIL-PRF-19500 military qualification, providing assurance of manufacturing consistency and reliability for applications requiring military-grade components. The part is RoHS non-compliant and REACH unaffected, with ECCN classification EAR99. The operating temperature range extends from -65°C to 150°C (TJ), supporting extended low-temperature applications.

SMBJ48CA-13 (Substitute Part - Diodes Incorporated)

The SMBJ48CA-13 from Diodes Incorporated is electrically equivalent to the MASMBJ48CAE3 across all critical TVS diode parameters: reverse standoff voltage, breakdown voltage, clamping voltage, peak pulse current, and peak pulse power. Both parts use identical DO-214AA (SMB) surface-mount packaging. However, this part is discontinued at DiGi Electronics and should be selected only when the primary part is unavailable. The operating temperature range is -55°C to 150°C (TJ), which is narrower at the low-temperature extreme by 10°C compared to the primary part. This difference is significant for applications requiring operation below -55°C. The substitute part carries the same RoHS non-compliance status and REACH unaffected designation.

Selection Criteria:

Use the MASMBJ48CAE3 for new designs and standard procurement. Use the SMBJ48CA-13 only when the primary part is unavailable and the application operating temperature does not require operation below -55°C (TJ).

Frequently Asked Questions (FAQ)

Q: Are the MASMBJ48CAE3 and SMBJ48CA-13 electrically interchangeable?

A: Yes. Both parts have identical electrical specifications: 48V reverse standoff voltage, 53.3V minimum breakdown voltage, 77.4V maximum clamping voltage, 7.7A peak pulse current, and 600W peak pulse power. Both are single-channel bidirectional Zener TVS diodes.

Q: Can the SMBJ48CA-13 be used as a direct replacement in existing designs?

A: The SMBJ48CA-13 is a direct mechanical and electrical substitute for the MASMBJ48CAE3 in applications where the operating temperature range does not extend below -55°C (TJ). The primary part supports operation down to -65°C (TJ). If your application requires operation below -55°C, the MASMBJ48CAE3 must be used.

Q: What is the difference in operating temperature range between these parts?

A: The MASMBJ48CAE3 operates from -65°C to 150°C (TJ), while the SMBJ48CA-13 operates from -55°C to 150°C (TJ). The MASMBJ48CAE3 supports 10°C lower minimum temperature operation. Both parts have identical maximum temperature ratings.

Q: Are both parts available in the same package?

A: Yes. Both the MASMBJ48CAE3 and SMBJ48CA-13 are housed in the DO-214AA (SMB) surface-mount package. They are mechanically identical and can be used interchangeably on the same PCB layout.

Q: What is the current availability status of each part?

A: The MASMBJ48CAE3 is in active production with 960 units currently in stock. The SMBJ48CA-13 is discontinued at DiGi Electronics with 883 units available from current inventory. The primary part is the recommended choice for new procurement.

Q: Do these parts have military qualification?

A: The MASMBJ48CAE3 is qualified to MIL-PRF-19500 military standards. The SMBJ48CA-13 does not list military qualification in the provided specifications. For applications requiring military-grade components, the MASMBJ48CAE3 is the appropriate selection.

Q: Are there any compliance differences between these parts?

A: Both parts are RoHS non-compliant and REACH unaffected. Both carry ECCN classification EAR99 and HTSUS code 8541.10.0080. Moisture sensitivity level (MSL) is 1 (Unlimited) for both parts.