Equivalent & Substitute Parts for SMBJ5366A/TR13 Zener Diode

Part Overview

The SMBJ5366A/TR13 from Microchip Technology is a Zener diode with a nominal Zener voltage of 39 V and maximum power dissipation of 5 W in a surface-mount DO-214AA (SMBJ) package. This part features ±10% tolerance, maximum Zener impedance of 14 Ohms, and operates over a wide temperature range. The product is active and currently available. Identifying alternative models is necessary for maintaining supply chain continuity, managing lifecycle transitions, or meeting regulatory requirements, particularly as this part is RoHS non-compliant.

Key Parameters

Parameter	SMBJ5366A/TR13
Voltage - Zener (Nom) (Vz)	39 V
Tolerance	±10%
Power - Max	5 W
Impedance (Max) (Zzt)	14 Ohms
Current - Reverse Leakage @ Vr	500 nA @ 28.1 V
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 1 A
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
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
ECCN	EAR99

Substitute Part Grouping Explanation

Substitute parts are selected strictly according to the following key parameters:

Nominal Zener voltage of 39 V
Surface mount DO-214AA (SMB) package
Operating temperature range of -65°C ~ 150°C
Product status listed as active

Tolerance, power dissipation, Zener impedance, and compliance information are noted as product and documentation control parameters.

Parameter Comparison

Parameter	SMBJ5366A/TR13 (Microchip)	1SMB5939B-13 (Diodes Inc.)	1SMB5939BT3G (onsemi)
Voltage - Zener (Nom) (Vz)	39 V	39 V	39 V
Tolerance	±10%	±5%	±5%
Power - Max	5 W	3 W	3 W
Impedance (Max) (Zzt)	14 Ohms	45 Ohms	45 Ohms
Current - Reverse Leakage @ Vr	500 nA @ 28.1 V	1 µA @ 29.7 V	1 µA @ 29.7 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	-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
Product Status	Active	Active	Active
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
ECCN	EAR99	EAR99	EAR99

Engineering Selection Recommendations

SMBJ5366A/TR13 (Microchip Technology) is RoHS non-compliant, while substitute parts 1SMB5939B-13 (Diodes Incorporated) and 1SMB5939BT3G (onsemi) are ROHS3 Compliant. All parts have the same operating temperature range, package type, and active status. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all compared parts, and REACH status is unaffected across the group. For environmental or compliance-driven sourcing, substitute models provide ROHS3 Compliant alternatives.

Frequently Asked Questions (FAQ)

Q: What are the key criteria for substituting SMBJ5366A/TR13 Zener diodes?
A: Substitution is defined by a nominal Zener voltage of 39 V, identical package (DO-214AA, SMB), active product status, and matching operating temperature range.

Q: Are there dimensional differences between SMBJ5366A/TR13 and its substitutes?
A: All listed parts share the DO-214AA (SMB) package, supporting direct footprint compatibility.

Q: How does RoHS compliance affect selection?
A: SMBJ5366A/TR13 is RoHS non-compliant; 1SMB5939B-13 and 1SMB5939BT3G are ROHS3 Compliant. Selection may be guided by regulatory requirements.

Q: Do the substitute parts have compatible moisture sensitivity levels?
A: All compared parts are rated Moisture Sensitivity Level (MSL) 1 (Unlimited).

Q: Is there any difference in operating temperature?
A: All parts operate from -65°C to 150°C.

Q: Are tolerance and power ratings identical?
A: Tolerance and power ratings differ. Tolerance for SMBJ5366A/TR13 is ±10%, while substitutes are ±5%. Maximum power is 5 W for SMBJ5366A/TR13, 3 W for the substitutes.

Q: Is there any impact related to Zener impedance or forward voltage?
A: Zener impedance and forward voltage differ between parts as shown in the parameter comparison table. These values should be referenced based on exact application requirements.

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