Equivalent & Substitute Parts for SMBJ4759/TR13

Part Overview

SMBJ4759/TR13 is a Zener diode manufactured by Microchip Technology. This surface-mount device in an SMBJ (DO-214AA) package features a nominal Zener voltage of 62 V, a power dissipation of 2 W, and a tolerance of ±10%. It is RoHS non-compliant and offered as an active product with 915 units available from stock. Due to requirements for compliance or sourcing continuity, it is often necessary to identify alternative models within the same diodes, Zener category to ensure uninterrupted design or manufacturing processes.

Key Parameters

Parameter	Value
Manufacturer Part Number	SMBJ4759/TR13
Manufacturer	Microchip Technology
Category	Diodes, Zener
Packaging	Tape & Reel (TR)
Voltage - Zener (Nom) (Vz)	62 V
Tolerance	±10%
Power - Max	2 W
Impedance (Max) (Zzt)	125 Ohms
Current - Reverse Leakage @ Vr	5 µA @ 47.1 V
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 200 mA
Operating Temperature	-65°C ~ 150°C
Mounting Type	Surface Mount
Package / Case	DO-214AA, SMB
Supplier Device Package	SMBJ (DO-214AA)
RoHS Status	RoHS non-compliant
MSL	1 (Unlimited)
REACH Status	REACH Unaffected
Product Status	Active

Substitute Part Grouping Explanation

Substitute selection for Zener diodes is strictly based on parameters relevant to electrical and mechanical compatibility within the same product category. The grouping of substitute parts is determined by the following parameters:

Voltage - Zener (Nom)
Tolerance
Power - Max
Impedance (Max) (Zzt)
Current - Reverse Leakage @ Vr
Voltage - Forward (Vf) (Max) @ If
Operating Temperature
Mounting Type
Package / Case
Compliance (RoHS, REACH, MSL)
Product Status

Only those substitute parts matching or exceeding the primary part's ratings in these areas are included in the equivalent and substitute parts list.

Parameter Comparison

Parameter	SMBJ4759/TR13 Microchip Technology	1SMB5944BT3G onsemi	SZ1SMB5944BT3G onsemi
Category	Diodes, Zener	Diodes, Zener	Diodes, Zener
Packaging	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)
Voltage - Zener (Nom) (Vz)	62 V	62 V	62 V
Tolerance	±10%	±5%	±5%
Power - Max	2 W	3 W	3 W
Impedance (Max) (Zzt)	125 Ohms	100 Ohms	100 Ohms
Current - Reverse Leakage @ Vr	5 µA @ 47.1 V	1 µA @ 47.1 V	1 µA @ 47.1 V
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 200 mA	1.5 V @ 200 mA	1.5 V @ 200 mA
Operating Temperature	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Supplier Device Package	SMBJ (DO-214AA)	SMB	SMB
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active

Engineering Selection Recommendations

Substitute parts 1SMB5944BT3G and SZ1SMB5944BT3G are both active, and each provides RoHS and REACH compliance. These substitutes exceed the original part's power rating and improve on tolerance, impedance, and reverse leakage characteristics. Compliance status for these alternatives should be considered if regulatory requirements are present.

Frequently Asked Questions (FAQ)

Q1: What key electrical parameters must be verified to ensure substitution compatibility for Zener diodes?
A1: The essential parameters include Zener voltage (Vz), power rating (W), impedance (Zzt), reverse leakage current at specified voltage, tolerance, and operating temperature range.

Q2: How important is the package type in selecting Zener diode substitutes?
A2: Package type must match physically and mechanically to ensure soldering compatibility and fit within the same board layout constraints. All parts listed use the DO-214AA, SMB package.

Q3: Are there compliance considerations when substituting SMBJ4759/TR13?
A3: Yes. SMBJ4759/TR13 is RoHS non-compliant. The substitutes listed, 1SMB5944BT3G and SZ1SMB5944BT3G, are ROHS3 compliant and REACH unaffected, which is important for regulated industries.

Q4: What about substitution between automotive and non-automotive grades?
A4: SZ1SMB5944BT3G includes automotive grade (AEC-Q101 qualified) while the others do not specify an automotive grade. Selection depends on application requirements for automotive qualification.

Q5: Are there any differences in inventory or supply between the parts?
A5: Inventory levels are indicated in the comparison for direct stock availability assessment, which can be critical for urgent production or maintenance schedules.

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