Equivalent & Substitute Parts for SMBJ5948A/TR13 Zener Diode

Part Overview

SMBJ5948A/TR13 by Microchip Technology is an active, surface-mount Zener Diode in the Diodes, Zener category. It features a nominal Zener voltage of 91 V, 2 W maximum power dissipation, and a SMBJ (DO-214AA) package. The component is currently available, but its RoHS non-compliance may necessitate the selection of alternative models, particularly for applications requiring RoHS-compliant parts or automotive qualification.

Key Parameters

Manufacturer Part Number	Manufacturer	Voltage - Zener (Nom) (Vz)	Power - Max	Impedance (Max) (Zzt)	Current - Reverse Leakage @ Vr	Voltage - Forward (Vf) (Max) @ If	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package	RoHS Status	Moisture Sensitivity Level (MSL)	REACH Status	ECCN	HTSUS	Product Status
SMBJ5948A/TR13	Microchip Technology	91 V	2 W	200 Ohms	1 µA @ 69.2 V	1.2 V @ 200 mA	-65°C ~ 150°C	Surface Mount	DO-214AA, SMB	SMBJJ (DO-214AA)	RoHS non-compliant	1 (Unlimited)	REACH Unaffected	EAR99	8541.10.0050	Active
SZ1SMB5948BT3G	onsemi	91 V	3 W	200 Ohms	1 µA @ 69.2 V	1.5 V @ 200 mA	-65°C ~ 150°C	Surface Mount	DO-214AA, SMB	SMB	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	EAR99	8541.10.0050	Active

Substitute Part Grouping Explanation

Substitute parts for SMBJ5948A/TR13 are grouped based on matching critical electrical and mechanical parameters. Substitution is strictly determined by nominal Zener voltage (91 V), impedance (200 Ohms), reverse leakage current (1 µA @ 69.2 V), mounting type (Surface Mount), operating temperature range (-65°C ~ 150°C), and package form factor (DO-214AA, SMB). Only parts with these matching characteristics are listed as substitutes.

Parameter Comparison

Parameter	SMBJ5948A/TR13	SZ1SMB5948BT3G
Manufacturer	Microchip Technology	onsemi
Category	Diodes, Zener	Diodes, Zener
Voltage - Zener (Nom) (Vz)	91 V	91 V
Power - Max	2 W	3 W
Impedance (Max) (Zzt)	200 Ohms	200 Ohms
Current - Reverse Leakage @ Vr	1 µA @ 69.2 V	1 µA @ 69.2 V
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 200 mA	1.5 V @ 200 mA
Operating Temperature	-65°C ~ 150°C	-65°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	DO-214AA, SMB	DO-214AA, SMB
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99
HTSUS	8541.10.0050	8541.10.0050
Product Status	Active	Active

Engineering Selection Recommendations

Selection among SMBJ5948A/TR13 and SZ1SMB5948BT3G should be based on compliance and qualification requirements. SZ1SMB5948BT3G holds ROHS3 compliance and AEC-Q101 automotive qualification, allowing use in applications demanding environmental and industry certifications. SMBJ5948A/TR13 is RoHS non-compliant and lacks detailed automotive qualification, restricting its suitability in regulated industries or automotive designs. Both components are in active status and available for use according to specified key parameters.

Frequently Asked Questions (FAQ)

Q1: What key parameters must match when substituting Zener diodes in DO-214AA, SMB packages?
A1: Voltage - Zener, power rating, maximum impedance, reverse leakage current, mounting type, operating temperature range, and package / case must be equivalent.

Q2: Are SZ1SMB5948BT3G and SMBJ5948A/TR13 compatible in terms of footprint?
A2: Both are supplied in DO-214AA, SMB surface mount cases, permitting direct swap within mechanical mounting constraints.

Q3: How does RoHS status affect component selection?
A3: RoHS status affects usage in applications subject to environmental regulation; SZ1SMB5948BT3G is ROHS3 Compliant, while SMBJ5948A/TR13 is RoHS non-compliant.

Q4: Can substitute parts be used interchangeably in automotive designs?
A4: SZ1SMB5948BT3G specifies AEC-Q101 automotive qualification, enabling use in automotive applications.

Q5: Does power rating need to be higher or equal in substitute parts?
A5: Substitute power rating must be equal to or greater than the original to maintain functionality; SZ1SMB5948BT3G is rated at 3 W compared to SMBJ5948A/TR13's 2 W.

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