Equivalent & Substitute Parts for SMBJ5948C/TR13 Zener Diode

Part Overview

SMBJ5948C/TR13 from Microchip Technology is an active surface-mount Zener diode, designed for voltage regulation and protection in electronic circuits. It features a nominal Zener voltage of 91 V, maximum power dissipation of 2 W, and is supplied in an SMBJ (DO-214AA) package for surface-mount applications. Finding alternative models is necessary when specific requirements about power rating, tolerance, compliance, inventory status, or automotive grade qualifications arise in project specifications or supply chain constraints.

Substiute Parts

SMBJ5948C/TR13

Microchip TechnologyIn Stock: 994SMBJ5948C/TR13 Datasheet

Current PartRFQ

SZ1SMB5948BT3G

onsemiIn Stock: 3344SZ1SMB5948BT3G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for SMBJ5948C/TR13 Zener diodes is strictly based on electrical and mechanical parameters provided. Only parts matching the following criteria are considered substitutes:

• Zener Voltage (Vz): 91 V
• Impedance (Zzt): 200 Ohms
• Reverse Leakage Current @ Vr: 1 µA @ 69.2 V
• Surface Mount, DO-214AA, SMB package
• Operating Temperature: -65°C ~ 150°C
• Power rating equal or higher
• Product must be active

RoHS, REACH, and automotive qualification differences are relevant for compliance but do not affect substitute consideration unless specified for regulatory reasons.

Parameter Comparison

Engineering Selection Recommendations

Selection between SMBJ5948C/TR13 and SZ1SMB5948BT3G is governed by product status and compliance data. Both are active and available in Tape & Reel packaging with identical electrical performance in nominal Zener voltage and mechanical compatibility (DO-214AA, SMB). SZ1SMB5948BT3G is listed as ROHS3 compliant and automotive qualified (AEC-Q101), while SMBJ5948C/TR13 is RoHS non-compliant. Inventory levels should also be considered in procurement planning for immediate availability. For designs requiring RoHS compliance or automotive-grade qualification, SZ1SMB5948BT3G fulfills these criteria.

Frequently Asked Questions (FAQ)

Q1: What electrical parameters must match for Zener diode substitution in this category?
A: Substitution requires equivalence in Zener voltage, reverse leakage current at the specified test voltage, impedance, and maximum power rating (equal or greater).

Q2: Is package compatibility important for surface-mount Zener diode substitution?
A: Yes, both SMBJ5948C/TR13 and SZ1SMB5948BT3G utilize the DO-214AA, SMB package, ensuring direct surface mount and board-level interchangeability.

Q3: How does RoHS compliance impact substitution?
A: For applications demanding RoHS environmental compliance, only substitute parts like SZ1SMB5948BT3G (ROHS3 compliant) meet this criterion.

Q4: Are automotive grade or qualification requirements considered in substitute selection?
A: If automotive qualification (e.g., AEC-Q101) is specified, only parts with the required certification such as SZ1SMB5948BT3G should be selected.

Q5: What operating temperature range is valid for these substitute Zener diodes?
A: Both SMBJ5948C/TR13 and SZ1SMB5948BT3G specify an operating temperature of -65°C to 150°C, suitable for standard and automotive environments.