MASMBJ7.0AE3 Equivalent & Substitute Parts

Part Overview

The MASMBJ7.0AE3 is a unidirectional Zener-type transient voltage suppressor (TVS) diode manufactured by Microchip Technology. This surface-mount component is designed for general-purpose transient voltage protection applications, featuring a 7V reverse standoff voltage and 12V maximum clamping voltage at peak pulse current. The device is housed in a DO-214AA (SMB) package and is qualified to MIL-PRF-19500 military standards. The part maintains active product status with 899 units currently in stock. Identification of equivalent and substitute parts becomes necessary when the primary part experiences supply constraints, discontinuation, or when alternative sourcing is required while maintaining electrical and mechanical compatibility.

Substiute Parts

MASMBJ7.0AE3

Microchip TechnologyIn Stock: 952MASMBJ7.0AE3 Datasheet

Current PartRFQ

SMBJ7.0A-13

Diodes IncorporatedIn Stock: 903SMBJ7.0A-13 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MASMBJ7.0AE3 is determined by strict equivalence of electrical and mechanical parameters. The following criteria establish valid substitution:

Primary Substitution Criteria:

• Voltage - Reverse Standoff (Typ): 7V
• Voltage - Breakdown (Min): 7.78V
• Voltage - Clamping (Max) @ Ipp: 12V
• Current - Peak Pulse (10/1000µs): 50A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA or SMB
• Mounting Type: Surface Mount
• Type: Zener
• Unidirectional Channels: 1

The SMBJ7.0A-13 manufactured by Diodes Incorporated satisfies all primary electrical parameters and mechanical requirements. This part is classified as a direct manufacturer substitute despite its discontinued status at DiGi Electronics, as it maintains complete electrical and package compatibility with the MASMBJ7.0AE3.

Parameter Comparison

Engineering Selection Recommendations

MASMBJ7.0AE3 (Primary Selection)

The MASMBJ7.0AE3 maintains active product status and is the preferred selection for new designs and ongoing production. This part carries MIL-PRF-19500 military qualification and operates across an extended temperature range of -65°C to 150°C. Current inventory of 899 units supports immediate procurement requirements.

SMBJ7.0A-13 (Substitute Selection)

The SMBJ7.0A-13 from Diodes Incorporated provides complete electrical and mechanical compatibility with the MASMBJ7.0AE3. All critical voltage parameters, peak pulse current, and power dissipation ratings are identical. The package and mounting specifications are equivalent. However, this part is discontinued at DiGi Electronics and operates within a narrower temperature range (-55°C to 150°C). Selection of this substitute is appropriate only when the MASMBJ7.0AE3 is unavailable and the application operating temperature does not require the extended lower-temperature performance of the primary part. Both parts share identical RoHS non-compliance status, MSL rating, and REACH classification.

Frequently Asked Questions (FAQ)

Q: Can the SMBJ7.0A-13 be used as a direct replacement for the MASMBJ7.0AE3?

A: The SMBJ7.0A-13 provides electrical and mechanical compatibility for applications operating within the -55°C to 150°C temperature range. The MASMBJ7.0AE3 supports extended lower-temperature operation to -65°C. Substitution is valid only when the application does not require operation below -55°C.

Q: What are the critical parameters that must match for TVS diode substitution?

A: The following parameters must be identical or equivalent: Voltage - Reverse Standoff (Typ), Voltage - Breakdown (Min), Voltage - Clamping (Max) @ Ipp, Current - Peak Pulse (10/1000µs), Power - Peak Pulse, Package / Case, and Mounting Type. All these parameters match between the MASMBJ7.0AE3 and SMBJ7.0A-13.

Q: Are there package compatibility concerns between these parts?

A: Both the MASMBJ7.0AE3 and SMBJ7.0A-13 use the DO-214AA (SMB) surface-mount package. They are mechanically and electrically compatible for PCB assembly without modification.

Q: What is the significance of the MIL-PRF-19500 qualification on the MASMBJ7.0AE3?

A: MIL-PRF-19500 qualification indicates the part meets military performance standards for semiconductor devices. The SMBJ7.0A-13 does not carry this qualification. Applications requiring military-grade components must use the MASMBJ7.0AE3.

Q: Why is the SMBJ7.0A-13 listed as discontinued?

A: The SMBJ7.0A-13 is discontinued at DiGi Electronics, indicating it is no longer actively distributed through this channel. Availability through alternative distributors may vary. The MASMBJ7.0AE3 remains in active production.

Q: How do the operating temperature ranges affect part selection?

A: The MASMBJ7.0AE3 operates from -65°C to 150°C, while the SMBJ7.0A-13 operates from -55°C to 150°C. Applications requiring operation below -55°C must use the MASMBJ7.0AE3. For applications within the -55°C to 150°C range, both parts are functionally equivalent.

Q: Are there compliance differences between these parts?

A: Both parts share identical RoHS non-compliance status, MSL rating of 1 (Unlimited), and REACH Unaffected classification. No compliance differentiation exists between the two parts.