SMBJ45AE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMBJ45AE3/TR13 is an active Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, classified as a unidirectional zener-type device for general-purpose overvoltage protection. This component is packaged in DO-214AA (SMB) surface mount form factor with tape and reel (TR) packaging. Equivalent and substitute parts are necessary when the primary part number is unavailable or when supply chain optimization requires sourcing from alternative manufacturers or packaging formats while maintaining electrical and mechanical compatibility.

Substiute Parts

SMBJ45AE3/TR13

Microchip TechnologyIn Stock: 817SMBJ45AE3/TR13 Datasheet

Current PartRFQ

SMBJ45A

MDDIn Stock: 46008SMBJ45A Datasheet

DirectRFQ

SMBJ45A

MDDIn Stock: 46008SMBJ45A Datasheet

DirectRFQ

SMBJ45A

MDDIn Stock: 46008SMBJ45A Datasheet

DirectRFQ

SMBJ45A-13-F

Diodes IncorporatedIn Stock: 8608SMBJ45A-13-F Datasheet

DirectRFQ

SMBJ45A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 9159SMBJ45A-E3/52 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMBJ45AE3/TR13 are qualified based on electrical parameter equivalence and mechanical compatibility. The following criteria determine substitutability:

Critical Electrical Parameters:

• Voltage - Reverse Standoff (Typ): 45V
• Voltage - Breakdown (Min): 50V
• Voltage - Clamping (Max) @ Ipp: 72.7V
• Current - Peak Pulse (10/1000µs): 8.3A
• Power - Peak Pulse: 600W

Mechanical Parameters:

• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Unidirectional Channels: 1

All qualified substitute parts maintain identical electrical performance across these parameters and are compatible with PCB designs specified for the SMBJ45AE3/TR13.

Parameter Comparison

Engineering Selection Recommendations

All qualified substitute parts maintain active product status and ROHS3 compliance. Selection between substitute options depends on supply availability, packaging format requirements, and operating temperature range specifications:

SMBJ45A (MDD): Suitable for applications operating within -50°C to +150°C range with standard tape and reel or bulk packaging availability.

SMBJ45A-13-F (Diodes Incorporated): Available in tape and reel (TR) packaging format, with extended lower temperature rating to -55°C, offering equivalent functionality to the primary part in standardized packaging.

SMBJ45A-E3/52 (Vishay General Semiconductor): Supplied in cut tape (CT) packaging under the TransZorb® series designation, with lower temperature operation to -55°C, suitable for applications requiring cut tape format.

The primary part SMBJ45AE3/TR13 specifies operating range to -65°C; substitutes with -50°C or -55°C ratings are acceptable for designs not requiring the extended lower temperature specification.

Frequently Asked Questions (FAQ)

Q: What electrical parameters must match for substitution of the SMBJ45AE3/TR13? A: The reverse standoff voltage (45V), breakdown voltage (50V minimum), clamping voltage (72.7V maximum at Ipp), peak pulse current (8.3A), and peak pulse power (600W) must remain identical for direct substitution.

Q: Are all substitute parts mechanically compatible with the SMBJ45AE3/TR13 PCB footprint? A: Yes. All qualified substitutes use the DO-214AA (SMB) package, maintaining identical mechanical dimensions, lead configuration, and surface mount compatibility for direct PCB replacement.

Q: What is the difference between tape and reel (TR) and cut tape (CT) packaging? A: Tape and reel (TR) packaging supplies components on continuous tape wound on reels for automated assembly lines. Cut tape (CT) packaging supplies components on cut segments of tape, suitable for lower-volume applications or manual assembly processes. Both formats use identical component dimensions and electrical specifications.

Q: Can I substitute a part with a lower operating temperature minimum rating? A: Substitution is acceptable when the substitute's lower temperature rating meets or exceeds the design requirement. The SMBJ45AE3/TR13 operates to -65°C; substitutes rated to -50°C or -55°C are suitable for applications not requiring operation below -50°C or -55°C respectively.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All qualified substitute parts carry ROHS3 compliance certification, ensuring compatibility with environmental and regulatory requirements matching the primary part.