Equivalent & Substitute Parts for SMBJ4756/TR13

Part Overview

The SMBJ4756/TR13 is a Zener diode manufactured by Microchip Technology, belonging to the Diodes, Zener category. This device features a 47 V nominal Zener voltage, 2 W maximum power dissipation, and a surface-mount DO-214AA (SMBJ) package. The product status is Active, with an available inventory of 1099 pieces. Identifying substitute parts is necessary to provide continuity of supply in cases of inventory fluctuations, RoHS compliance requirements, or sourcing needs for compatible surface mount Zener diodes.

Key Parameters

Parameter	SMBJ4756/TR13
Voltage - Zener (Nom) (Vz)	47 V
Tolerance	±10%
Power - Max	2 W
Impedance (Max) (Zzt)	80 Ohms
Current - Reverse Leakage @ Vr	5 µA @ 35.8 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
ECCN	EAR99
HTSUS	8541.10.0050

Substitute Part Grouping Explanation

Substitute parts for SMBJ4756/TR13 are selected based on strict matching of core electrical and mechanical parameters. Allowed substitute criteria include: Zener voltage (47 V nominal), mounting type (Surface Mount), package/case (DO-214AA, SMB), operating temperature range (−65°C to 150°C), and comparable or improved ratings for power dissipation, tolerance, impedance, and reverse leakage current. RoHS and automotive grade distinctions are noted based on provided compliance and qualification data.

Parameter Comparison

Parameter	SMBJ4756/TR13 (Microchip Technology)	1SMB5941BT3G (onsemi)	SZ1SMB5941BT3G (onsemi)
Category	Diodes, Zener	Diodes, Zener	Diodes, Zener
Packaging	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)
Voltage - Zener (Nom) (Vz)	47 V	47 V	47 V
Tolerance	±10%	±5%	±5%
Power - Max	2 W	3 W	3 W
Impedance (Max) (Zzt)	80 Ohms	67 Ohms	67 Ohms
Current - Reverse Leakage @ Vr	5 µA @ 35.8 V	1 µA @ 35.8 V	1 µA @ 35.8 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
ECCN	EAR99	EAR99	EAR99
HTSUS	8541.10.0050	8541.10.0050	8541.10.0050
Product Status	Active	Active	Active
Qualification	-	-	AEC-Q101
Grade	-	-	Automotive

Engineering Selection Recommendations

SMBJ4756/TR13 is an Active product and RoHS non-compliant. Substitute parts 1SMB5941BT3G and SZ1SMB5941BT3G are both Active and ROHS3 Compliant. SZ1SMB5941BT3G also features AEC-Q101 automotive qualification. Both substitute parts have an MSL rating of 1 (Unlimited) and the same HTSUS and ECCN codes. Selection among these alternatives can be based on required compliance (such as RoHS), automotive qualification needs, and packaging preferences.

Frequently Asked Questions (FAQ)

Q1: What are the essential criteria for substituting Zener diodes in this category?
A1: Essential criteria include nominal Zener voltage, tolerance, power dissipation, maximum impedance, reverse leakage current at specified voltage, mounting type, package/case, and operating temperature range.

Q2: Is package compatibility ensured among the listed substitute parts?
A2: All listed parts use the DO-214AA, SMB package type, ensuring mechanical and footprint compatibility.

Q3: How does RoHS compliance differ among the main and substitute parts?
A3: SMBJ4756/TR13 is RoHS non-compliant, while both 1SMB5941BT3G and SZ1SMB5941BT3G are ROHS3 Compliant.

Q4: How do differences in tolerance and power rating affect substitution?
A4: Substitute parts have tighter tolerance (±5% vs. ±10%) and higher power rating (3 W vs. 2 W), which are within the allowed range for substitution.

Q5: What options are available for automotive-grade or qualified applications?
A5: SZ1SMB5941BT3G provides AEC-Q101 automotive qualification and is suitable for automotive-grade requirements.

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