1SMB5932 Zener Diode Equivalent & Substitute Parts

Part Overview

The 1SMB5932 is a 20 V, 3 W surface mount zener diode manufactured by Taiwan Semiconductor Corporation in DO-214AA (SMB) package. This component is classified as Active product status and is RoHS3 compliant. The 1SMB5932 operates across a temperature range of -55°C to 150°C and is suitable for voltage regulation and protection applications in surface mount designs. Equivalent and substitute parts are identified based on matching electrical specifications, package compatibility, and operational parameters to ensure functional interchangeability in circuit applications.

Substiute Parts

1SMB5932

Taiwan Semiconductor CorporationIn Stock: 21131SMB5932 Datasheet

Current PartRFQ

3SMBJ5932B-TP

Micro Commercial CoIn Stock: 122163SMBJ5932B-TP Datasheet

DirectRFQ

SMBZ5932B-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 3089SMBZ5932B-E3/52 Datasheet

DirectRFQ

1SMB5932BT3G

onsemiIn Stock: 755051SMB5932BT3G Datasheet

UpgradeRFQ

SMBJ5357B-TP

Micro Commercial CoIn Stock: 30432SMBJ5357B-TP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1SMB5932 are classified into two categories based on electrical and mechanical parameter alignment:

Direct Substitutes (Electrical and Mechanical Equivalents): Direct substitutes maintain identical or equivalent electrical specifications: 20 V nominal zener voltage, ±5% tolerance, 3 W maximum power rating, 14 Ohms maximum impedance, 1 µA reverse leakage current at 15.2 V, and -55°C to 150°C operating temperature range. All direct substitutes use the DO-214AA (SMB) surface mount package. These parts are interchangeable in applications where the original 1SMB5932 is specified.

Upgrade Substitute (Enhanced Specifications): The 1SMB5932BT3G from onsemi maintains all core electrical parameters (20 V, 3 W, ±5%, 14 Ohms, 1 µA leakage) but extends the lower operating temperature limit to -65°C, providing enhanced low-temperature performance. This part is classified as an upgrade due to expanded temperature range capability while maintaining package and electrical compatibility.

Similar Part (Higher Power Rating): The SMBJ5357B-TP differs in power rating (5 W versus 3 W) and impedance characteristics (3 Ohms versus 14 Ohms), making it suitable for applications requiring higher power dissipation at the same 20 V zener voltage. This part is not a direct substitute but serves similar voltage regulation functions with enhanced power handling.

Parameter Comparison

Engineering Selection Recommendations

For Direct Substitution (1:1 Replacement): The 3SMBJ5932B-TP (Micro Commercial Co) and SMBZ5932B-E3/52 (Vishay General Semiconductor) are direct electrical and mechanical equivalents to the 1SMB5932. Both parts maintain identical zener voltage (20 V), power rating (3 W), tolerance (±5%), impedance (14 Ohms), reverse leakage current (1 µA @ 15.2 V), and operating temperature range (-55°C to 150°C). All three parts are RoHS3 compliant with MSL 1 rating and use the DO-214AA (SMB) surface mount package. These substitutes are suitable for applications requiring equivalent performance without design modification.

For Enhanced Low-Temperature Performance: The 1SMB5932BT3G (onsemi) provides an extended lower operating temperature limit of -65°C while maintaining all other electrical specifications identical to the main part. This upgrade substitute is appropriate for applications operating in extreme cold environments where the additional 10°C lower temperature capability is required. The part retains full electrical equivalence and RoHS3 compliance.

For Higher Power Dissipation Requirements: The SMBJ5357B-TP (Micro Commercial Co) is a similar part with increased power rating (5 W versus 3 W) and reduced impedance (3 Ohms versus 14 Ohms). This part is not a direct substitute but serves applications requiring higher power handling at the same 20 V zener voltage. Selection of this part requires circuit design review to confirm compatibility with the lower impedance characteristic.

Compliance and Availability Considerations: All listed parts maintain RoHS3 compliance and MSL 1 rating, ensuring compatibility with standard surface mount assembly processes. Inventory availability varies by manufacturer: 1SMB5932BT3G (onsemi) offers the highest stock level at 75,400 pieces, while SMBZ5932B-E3/52 (Vishay) has 3,077 pieces available. Selection should account for supply chain requirements and lead time considerations.

Frequently Asked Questions (FAQ)

Q: Can the 3SMBJ5932B-TP be used as a direct replacement for the 1SMB5932? A: Yes. The 3SMBJ5932B-TP maintains identical electrical specifications (20 V nominal zener voltage, 3 W power rating, ±5% tolerance, 14 Ohms impedance, 1 µA reverse leakage) and uses the same DO-214AA (SMB) surface mount package. No circuit modification is required.

Q: What is the difference between the 1SMB5932BT3G and the main 1SMB5932? A: The 1SMB5932BT3G extends the lower operating temperature limit to -65°C compared to -55°C for the 1SMB5932. All other electrical parameters remain identical. This upgrade is suitable for applications requiring enhanced cold-temperature performance.

Q: Why is the SMBJ5357B-TP listed as a similar part rather than a direct substitute? A: The SMBJ5357B-TP has a higher power rating (5 W versus 3 W) and lower impedance (3 Ohms versus 14 Ohms). While both parts maintain the same 20 V zener voltage, the different power and impedance characteristics require circuit analysis to confirm compatibility. This part is suitable for applications requiring higher power dissipation.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts (3SMBJ5932B-TP, SMBZ5932B-E3/52, 1SMB5932BT3G, and SMBJ5357B-TP) are RoHS3 compliant with MSL 1 rating, ensuring compatibility with standard surface mount assembly and environmental regulations.

Q: What packaging options are available for the substitute parts? A: All direct substitute parts use the DO-214AA (SMB) surface mount package, identical to the main 1SMB5932. The 1SMB5932BT3G is available in Cut Tape (CT) and Digi-Reel® packaging, while other substitutes are supplied in Tape & Reel (TR) format. Package selection depends on assembly process requirements.

Q: Can the 1SMB5932 be used in applications requiring the SMBJ5357B-TP specifications? A: No. The 1SMB5932 has a 3 W power rating and 14 Ohms impedance, while the SMBJ5357B-TP provides 5 W power rating and 3 Ohms impedance. Applications requiring higher power dissipation or lower impedance must use the SMBJ5357B-TP or equivalent higher-power zener diode.

Q: What is the reverse leakage current specification for these zener diodes? A: The 1SMB5932, 3SMBJ5932B-TP, SMBZ5932B-E3/52, and 1SMB5932BT3G all specify 1 µA reverse leakage current at 15.2 V. The SMBJ5357B-TP has lower reverse leakage at 500 nA at 15.2 V due to its higher power rating design.

Q: Are these parts suitable for high-temperature applications? A: Yes. All listed parts operate to 150°C maximum junction temperature, making them suitable for high-temperature applications. The 1SMB5932BT3G additionally extends the lower temperature limit to -65°C for enhanced cold-temperature performance.