SMBJ14A-HR Equivalent & Substitute Parts

Part Overview

The SMBJ14A-HR is an active Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This unidirectional zener diode operates with a 14V reverse standoff voltage and provides 23.2V clamping at peak pulse current, housed in a DO-214AA (SMB) package. The part is RoHS3 compliant and carries unlimited moisture sensitivity rating. Equivalent and substitute parts are identified based on matching electrical specifications, package compatibility, and active product status.

Substiute Parts

SMBJ14A-HR

Littelfuse Inc.In Stock: 1138SMBJ14A-HR Datasheet

Current PartRFQ

SMBJ14A

MDDIn Stock: 17283SMBJ14A Datasheet

DirectRFQ

SMBJ14A

MDDIn Stock: 17283SMBJ14A Datasheet

DirectRFQ

SMBJ14A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 15808SMBJ14A-E3/52 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMBJ14A-HR are qualified based on the following criteria:

• Identical voltage specifications: 14V reverse standoff, 15.6V minimum breakdown, 23.2V maximum clamping voltage
• Matching peak pulse current rating: 25.9A at 10/1000µs pulse width
• Equivalent power dissipation: 600W peak pulse power
• Compatible package: DO-214AA (SMB) surface-mount configuration
• Active product status with RoHS3 compliance
• Unidirectional zener diode topology for general-purpose applications

Two substitute parts meet these criteria: SMBJ14A (MDD manufacturer) and SMBJ14A-E3/52 (Vishay General Semiconductor - Diodes Division). Both maintain electrical equivalence and package compatibility with the primary part.

Parameter Comparison

Engineering Selection Recommendations

All three parts—SMBJ14A-HR, SMBJ14A (MDD), and SMBJ14A-E3/52 (Vishay)—are active products with identical electrical specifications and RoHS3 compliance. Selection between these parts is based on:

• Packaging format: SMBJ14A-HR is supplied in Tape & Reel (TR); SMBJ14A-E3/52 is available in Cut Tape (CT) & Digi-Reel®; SMBJ14A packaging is not specified
• Operating temperature range: SMBJ14A-HR supports -65°C to 150°C, providing the widest range; SMBJ14A-E3/52 supports -55°C to 150°C; SMBJ14A supports -50°C to 150°C
• Manufacturer availability: All three are in active stock with substantial inventory levels

For applications requiring the lowest operating temperature specification, SMBJ14A-HR is the primary choice. For applications with standard temperature requirements and alternative packaging needs, SMBJ14A (MDD) or SMBJ14A-E3/52 (Vishay) are functionally equivalent.

Frequently Asked Questions (FAQ)

Q: Can SMBJ14A (MDD) be used as a direct replacement for SMBJ14A-HR?

A: Yes. Both parts share identical voltage specifications (14V standoff, 15.6V breakdown, 23.2V clamping), peak pulse current (25.9A), power rating (600W), and DO-214AA package. The operating temperature range differs: SMBJ14A-HR operates from -65°C to 150°C, while SMBJ14A operates from -50°C to 150°C. Selection depends on application temperature requirements.

Q: What is the difference between SMBJ14A-E3/52 and SMBJ14A-HR?

A: Electrical specifications are identical. SMBJ14A-E3/52 is manufactured by Vishay and supplied in Cut Tape (CT) & Digi-Reel® packaging, while SMBJ14A-HR is manufactured by Littelfuse and supplied in Tape & Reel (TR). Operating temperature ranges differ: SMBJ14A-E3/52 operates from -55°C to 150°C versus SMBJ14A-HR at -65°C to 150°C.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. SMBJ14A-HR, SMBJ14A (MDD), and SMBJ14A-E3/52 (Vishay) are all RoHS3 compliant with MSL rating of 1 (Unlimited).

Q: Does package format affect electrical performance?

A: No. Tape & Reel (TR), Cut Tape (CT), and Digi-Reel® are packaging and delivery formats only. They do not affect the electrical characteristics or performance of the TVS diode.

Q: Which substitute part has the widest operating temperature range?

A: SMBJ14A-HR operates from -65°C to 150°C, providing the widest range among the three parts. SMBJ14A-E3/52 operates from -55°C to 150°C, and SMBJ14A operates from -50°C to 150°C.