Equivalent & Substitute Parts Reference for SMBJ33AHE3_A/I

Part Overview

The SMBJ33AHE3_A/I, manufactured by Vishay General Semiconductor - Diodes Division, is a Transient Voltage Suppressor (TVS) diode with a 33V reverse standoff voltage, designed for automotive-grade applications. It features a surface-mount DO-214AA (SMB) package, with a maximum peak pulse power rating of 600W and a clamping voltage of 53.3V at 11.3A peak pulse current. The main part is classified as obsolete, necessitating the identification and use of alternative models to maintain system compatibility and inventory continuity.

Substiute Parts

SMBJ33AHE3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1110SMBJ33AHE3_A/I Datasheet

Current PartRFQ

SMBJ33AHE3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 754SMBJ33AHE3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute selection is strictly validated against the following parameters: category (Transient Voltage Suppressors), electrical type (Zener, unidirectional channel), voltage specifications (reverse standoff, breakdown, clamping), current and power ratings, automotive grade certification, AEC-Q101 qualification, mounting style, package type (DO-214AA, SMB), and regulatory status (RoHS3 and REACH compliance). Any substitute part must match these characteristics to maintain functional and regulatory equivalence.

Parameter Comparison

Engineering Selection Recommendations

SMBJ33AHE3_B/I is the direct substitute for SMBJ33AHE3_A/I according to manufacturer recommendation. Both parts have identical electrical, mechanical, and compliance parameters, including automotive grade and AEC-Q101 qualification. As SMBJ33AHE3_A/I is obsolete, SMBJ33AHE3_B/I is suitable for replacement in all applications where the main part was previously specified, subject to maintaining inventory practices and certification requirements.

Frequently Asked Questions (FAQ)

Q1: On what basis can SMBJ33AHE3_B/I substitute SMBJ33AHE3_A/I?
A1: SMBJ33AHE3_B/I matches all critical electrical, mechanical, and compliance parameters with SMBJ33AHE3_A/I, including voltage ratings, pulse current, package type, qualification, and RoHS/REACH status.

Q2: Are there differences in package compatibility between SMBJ33AHE3_A/I and SMBJ33AHE3_B/I?
A2: No differences. Both parts utilize the DO-214AA (SMB) surface-mount package.

Q3: Is automotive grade and AEC-Q101 qualification maintained with the substitute part?
A3: Yes. Both the main and substitute part are rated for automotive grade and AEC-Q101 qualified.

Q4: Will RoHS and REACH compliance be affected when substituting?
A4: No. Both part numbers are ROHS3 compliant and REACH unaffected.

Q5: Should changes in inventory status affect part selection beyond product status?
A5: Engineering selection is based strictly on product status and compliance. Inventory levels do not affect technical equivalence or regulatory suitability.