SMAJ5933B-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The SMAJ5933B-TP is a 22 V, 1.5 W surface mount zener diode manufactured by Micro Commercial Co in DO-214AC (SMA) package format. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility exist, enabling direct replacement in circuit applications where the primary part becomes unavailable or when alternative packaging formats are required.

Key Parameters

Parameter	Value
Voltage - Zener (Nom)	22 V
Tolerance	±5%
Power - Max	1.5 W
Impedance (Max)	17.5 Ohms
Current - Reverse Leakage @ Vr	500 nA @ 16.7 V
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 200 mA
Operating Temperature	150°C
Mounting Type	Surface Mount
Package / Case	DO-214AC, SMA
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the SMAJ5933B-TP are identified based on the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Zener voltage: 22 V nominal
Tolerance: ±5%
Surface mount package compatibility: DO-214AC / SMA form factor
Reverse leakage current: 500 nA @ 16.7 V
RoHS3 compliance and MSL Level 1 rating

Substitution Logic: Parts meeting all primary criteria are classified as direct electrical equivalents. The 1SMA5933BT3G maintains identical electrical specifications and packaging. The SMAZ22-13-F shares the same zener voltage, tolerance, package type, and leakage characteristics but operates at reduced maximum power (1 W versus 1.5 W), requiring application-level verification of power dissipation requirements.

Parameter Comparison

Parameter	SMAJ5933B-TP (Main)	1SMA5933BT3G (Substitute)	SMAZ22-13-F (Substitute)
Manufacturer	Micro Commercial Co	onsemi	Diodes Incorporated
Voltage - Zener (Nom)	22 V	22 V	22 V
Tolerance	±5%	±5%	±5%
Power - Max	1.5 W	1.5 W	1 W
Impedance (Max)	17.5 Ohms	17.5 Ohms	15 Ohms
Current - Reverse Leakage @ Vr	500 nA @ 16.7 V	500 nA @ 16.7 V	500 nA @ 16.7 V
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 200 mA	1.5 V @ 200 mA	1.2 V @ 200 mA
Operating Temperature Range	Up to 150°C	-65°C ~ 150°C	-65°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

1SMA5933BT3G (onsemi): This substitute provides complete electrical and mechanical equivalence to the SMAJ5933B-TP. Both components share identical zener voltage (22 V), power rating (1.5 W), impedance (17.5 Ohms), and forward voltage characteristics. The 1SMA5933BT3G is ROHS3 compliant with MSL Level 1 rating. The primary difference is packaging format (Cut Tape & Digi-Reel versus Tape & Reel), which does not affect electrical performance. This part is suitable for direct substitution in all applications.

SMAZ22-13-F (Diodes Incorporated): This substitute shares the same zener voltage (22 V), tolerance (±5%), reverse leakage current (500 nA @ 16.7 V), and package type (DO-214AC, SMA). However, the maximum power rating is reduced to 1 W compared to the 1.5 W specification of the main part. The forward voltage is also lower (1.2 V @ 200 mA versus 1.5 V @ 200 mA), and impedance is 15 Ohms versus 17.5 Ohms. This part is ROHS3 compliant with MSL Level 1 rating. Selection of this substitute requires confirmation that circuit power dissipation requirements do not exceed 1 W.

Frequently Asked Questions (FAQ)

Q: Can the 1SMA5933BT3G replace the SMAJ5933B-TP in all applications?

A: Yes. The 1SMA5933BT3G maintains identical electrical specifications including zener voltage (22 V), power rating (1.5 W), impedance (17.5 Ohms), and forward voltage characteristics. Both components are housed in DO-214AC (SMA) packages and are ROHS3 compliant. The packaging format difference (Cut Tape & Digi-Reel versus Tape & Reel) does not affect electrical performance or circuit compatibility.

Q: What are the limitations of using SMAZ22-13-F as a substitute?

A: The SMAZ22-13-F operates at a reduced maximum power rating of 1 W compared to the 1.5 W specification of the SMAJ5933B-TP. Applications requiring power dissipation above 1 W cannot use this substitute. Additionally, the forward voltage is lower (1.2 V versus 1.5 V) and impedance is reduced (15 Ohms versus 17.5 Ohms). These differences may affect circuit behavior in applications sensitive to forward voltage or impedance characteristics.

Q: Are all substitute parts available in the same package format?

A: All substitute parts are housed in DO-214AC (SMA) packages, ensuring mechanical compatibility with the original SMAJ5933B-TP. However, packaging formats differ: the SMAJ5933B-TP is supplied in Tape & Reel (TR) format, while the 1SMA5933BT3G and SMAZ22-13-F are supplied in Cut Tape (CT) & Digi-Reel format. These format differences do not affect component performance or circuit installation.

Q: Do all parts meet the same compliance standards?

A: Yes. The SMAJ5933B-TP, 1SMA5933BT3G, and SMAZ22-13-F are all ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). All parts are classified as REACH Unaffected and carry ECCN EAR99 designation.

Q: What is the operating temperature range for each part?

A: The SMAJ5933B-TP is rated to 150°C maximum operating temperature. The 1SMA5933BT3G and SMAZ22-13-F both operate across the extended range of -65°C to 150°C, providing broader temperature capability for applications requiring low-temperature performance.

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