Equivalent & Substitute Parts for SMBJ5380B/TR13 (Microchip Technology)

Part Overview

The SMBJ5380B/TR13 from Microchip Technology is a surface mount Zener diode rated at 120 V nominal Zener voltage and 5 W maximum power, housed in an SMBJ (DO-214AA) package. The product status is Active. Finding alternative models or substitutes for this Zener diode is necessary in cases of inventory constraints, RoHS compliance requirements, or supply chain needs. Only parts matching the critical electrical and mechanical parameters are suitable functional equivalents.

Key Parameters

Parameter	Value (SMBJ5380B/TR13)
Voltage - Zener (Nom) (Vz)	120 V
Tolerance	±5%
Power - Max	5 W
Impedance (Max) (Zzt)	170 Ohms
Current - Reverse Leakage @ Vr	500 nA @ 86.4 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

Substitute Part Grouping Explanation

Substitution is determined by strict matching on the following key parameters:

Zener voltage (Vz): 120 V
Tolerance: ±5%
Power rating
Maximum impedance (Zzt)
Reverse leakage current at specified test voltage
Forward voltage (Vf) at specified test current
Operating temperature range
Mounting type
Package/case

Only products with equivalent or compatible electrical characteristics and the same mechanical package are included as functional substitutes.

Parameter Comparison

Parameter	SMBJ5380B/TR13 (Microchip Technology)	SZ1SMB5951BT3G (onsemi)
Voltage - Zener (Nom) (Vz)	120 V	120 V
Tolerance	±5%	±5%
Power - Max	5 W	3 W
Impedance (Max) (Zzt)	170 Ohms	380 Ohms
Current - Reverse Leakage @ Vr	500 nA @ 86.4 V	1 µA @ 91.2 V
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 1 A	900 mV @ 10 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

Engineering Selection Recommendations

The SMBJ5380B/TR13 is listed as RoHS non-compliant, whereas the substitute SZ1SMB5951BT3G is ROHS3 compliant, maintaining REACH unaffected and the same unlimited MSL. Product status for both parts is Active. Qualified selections should consider environmental and compliance status in addition to matching functional parameters for applications requiring RoHS compliance.

Frequently Asked Questions (FAQ)

Q1: What criteria are used to determine if SZ1SMB5951BT3G is a substitute for SMBJ5380B/TR13?
A1: Substitution is based strictly on matching Zener voltage (120 V), tolerance (±5%), operating temperature, package/case (DO-214AA, SMB), and surface mount compatibility.

Q2: Are there differences in package or mounting for the substitute?
A2: Both parts utilize the DO-214AA, SMB package and are surface mount types.

Q3: What compliance differences exist between the main and substitute parts?
A3: SMBJ5380B/TR13 is RoHS non-compliant, while SZ1SMB5951BT3G is ROHS3 compliant. Both are REACH unaffected.

Q4: Do substitute parts have the same power rating?
A4: SMBJ5380B/TR13 is rated for 5 W, while SZ1SMB5951BT3G is rated for 3 W. This is a key difference and should be reviewed against application requirements.

Q5: Are both parts suitable for the same operating temperature range?
A5: Yes, both diodes support -65°C to 150°C operating temperature.

Q6: Are there differences in Moisture Sensitivity Level?
A6: Both parts have Moisture Sensitivity Level (MSL) 1 (Unlimited).

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