Equivalent & Substitute Parts for SMBJ5343C/TR13 Zener Diode

Part Overview

SMBJ5343C/TR13 is a Zener Diode manufactured by Microchip Technology, classified under Diodes, Zener. It features a nominal Zener voltage of 7.5 V, a maximum power dissipation of 5 W, and a tight tolerance of ±2%. The device comes in a Surface Mount SMBJ (DO-214AA) package and is intended for power regulation and voltage clamping in electronic designs.

The part is listed as active and available, but alternative models may be necessary for reasons such as supply continuity, inventory management, compliance with RoHS regulations, or specific procurement requirements—especially considering this part's RoHS non-compliant status.

Key Parameters

Parameter	SMBJ5343C/TR13	Units
Voltage - Zener (Nom) (Vz)	7.5	V
Tolerance	±2%	-
Power - Max	5	W
Impedance (Max) (Zzt)	1.5	Ohms
Current - Reverse Leakage @ Vr	10 @ 5.4 V	µA @ V
Voltage - Forward (Vf) (Max) @ If	1.2 @ 1 A	V @ A
Operating Temperature	-65°C ~ 150°C	°C
Mounting Type	Surface Mount	-
Package / Case	DO-214AA, SMB	-
RoHS Status	RoHS non-compliant	-
Moisture Sensitivity Level (MSL)	1 (Unlimited)	-
REACH Status	REACH Unaffected	-

Substitute Part Grouping Explanation

Substitution is determined strictly by matching the following key electrical and mechanical parameters: Zener Voltage (Vz), Package Type, Mounting Style, and Operating Temperature Range. Tolerance, Maximum Power rating, and compliance certifications (RoHS, REACH) are also evaluated. Each listed substitute shares the 7.5 V Zener voltage, surface mount DO-214AA (SMB) package, and similar operating temperature range. Variations in tolerance, power rating, and RoHS status may affect suitability depending on regulatory or application-specific requirements.

Key parameters for substitution:

Voltage - Zener (Nom) (Vz): 7.5 V
Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount
Operating Temperature Range: -65°C ~ 150°C / -55°C ~ 150°C
Tolerance
Power - Max
RoHS and REACH Status

Parameter Comparison

Parameter	SMBJ5343C/TR13 (Microchip Technology)	1SMB5922B-13 (Diodes Inc.)	3SMBJ5922B-TP (Micro Commercial Co)
Voltage - Zener (Nom) (Vz)	7.5 V	7.5 V	7.5 V
Tolerance	±2%	±5%	±5%
Power - Max	5 W	3 W	3 W
Impedance (Max) (Zzt)	1.5 Ω	3 Ω	3 Ω
Current - Reverse Leakage @ Vr	10 µA @ 5.4 V	5 µA @ 6 V	5 µA @ 6 V
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 1 A	1.5 V @ 200 mA	1.5 V @ 200 mA
Operating Temperature	-65°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

All listed substitute Zener diodes are active and have unlimited Moisture Sensitivity Level (MSL 1) and REACH unaffected status. Only 1SMB5922B-13 and 3SMBJ5922B-TP are ROHS3 compliant, in contrast to the main part, SMBJ5343C/TR13, which is RoHS non-compliant. Selection must comply with required RoHS certification criteria if needed for the design or regulatory environment.

Frequently Asked Questions (FAQ)

Q1: What parameters are critical when selecting a substitute for SMBJ5343C/TR13?
A1: The critical parameters are Zener voltage (7.5 V), package/case type (DO-214AA, SMB), mounting style (Surface Mount), operating temperature range, tolerance, power rating, RoHS status, and REACH status.

Q2: Are the substitute parts physically compatible in terms of mounting and footprint?
A2: All substitutes use DO-214AA, SMB package and surface mount type, providing mechanical compatibility.

Q3: What differences exist in tolerance and power rating between the main and substitute parts?
A3: SMBJ5343C/TR13 offers ±2% tolerance and 5 W power. Substitutes provide ±5% tolerance and 3 W power rating.

Q4: How does RoHS status affect part selection?
A4: Only 1SMB5922B-13 and 3SMBJ5922B-TP are ROHS3 compliant. SMBJ5343C/TR13 is RoHS non-compliant. Compliance is mandatory in regulated applications.

Q5: Are the operating temperature ranges of the substitutes consistent with the main part?
A5: 1SMB5922B-13 matches the main part (-65°C ~ 150°C). 3SMBJ5922B-TP has a slightly narrower lower end (-55°C ~ 150°C).

Q6: Are there additional considerations regarding moisture sensitivity?
A6: All compared parts have Moisture Sensitivity Level (MSL) 1, permitting unlimited floor life post-reflow and no special handling requirements.

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