3SMBJ5947B-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The 3SMBJ5947B-TP is an active-status 82 V, 3 W Zener diode manufactured by Micro Commercial Co in Surface Mount DO-214AA (SMB) package format. This component is supplied in Tape & Reel (TR) packaging with 715 units currently in stock. Zener diodes of this specification are used in voltage regulation, overvoltage protection, and reference voltage circuits where precise 82 V regulation at 3 W power dissipation is required. Equivalent substitute parts are identified when they maintain identical electrical parameters and mechanical compatibility within the specified tolerance ranges.

Substiute Parts

3SMBJ5947B-TP

Micro Commercial CoIn Stock: 7833SMBJ5947B-TP Datasheet

Current PartRFQ

1SMB5947B

Good-Ark SemiconductorIn Stock: 804381SMB5947B Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3SMBJ5947B-TP is determined by strict equivalence across the following critical parameters:

• Zener Voltage (Vz): 82 V nominal with ±5% tolerance
• Power Dissipation (Pmax): 3 W maximum
• Impedance (Zzt): 160 Ohms maximum
• Reverse Leakage Current: 1 µA @ 62.2 V
• Forward Voltage (Vf): 1.5 V maximum @ 200 mA
• Operating Temperature Range: -65°C to 150°C (TJ)
• Package Type: DO-214AA (SMB) Surface Mount
• Compliance: ROHS3 Compliant, REACH Unaffected, MSL 1

The substitute part 1SMB5947B meets all electrical and mechanical parameters identically. Packaging format differs (Cut Tape & Digi-Reel® versus Tape & Reel), but this represents a supply chain variation without impact on component functionality or circuit performance.

Parameter Comparison

Engineering Selection Recommendations

The 1SMB5947B manufactured by Good-Ark Semiconductor is a direct parametric equivalent to the 3SMBJ5947B-TP. Both components are active-status products with identical electrical specifications, operating temperature ranges, and regulatory compliance certifications (ROHS3 Compliant, REACH Unaffected, MSL 1).

Selection between these parts is determined by supply chain requirements and packaging format availability. The 3SMBJ5947B-TP is supplied in Tape & Reel format with 715 units in stock. The 1SMB5947B is available in Cut Tape and Digi-Reel® formats with 80,400 units in stock, providing significantly higher availability for high-volume applications.

Both components are suitable for direct substitution in 82 V voltage regulation, overvoltage protection, and reference voltage circuits without circuit redesign or performance degradation.

Frequently Asked Questions (FAQ)

Q: Can the 1SMB5947B replace the 3SMBJ5947B-TP in production assemblies?

A: Yes. The 1SMB5947B is electrically and mechanically equivalent across all specified parameters. Both components feature identical 82 V nominal Zener voltage, 3 W power rating, 160 Ohms maximum impedance, and DO-214AA (SMB) Surface Mount package. Regulatory compliance and operating temperature ranges are identical.

Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel® packaging?

A: Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® represent different supply formats for the same component. Tape & Reel provides continuous reel packaging for automated pick-and-place assembly. Cut Tape and Digi-Reel® provide alternative reel formats. The component itself, its electrical performance, and mechanical fit remain unchanged across these packaging variations.

Q: Are there any compliance or certification differences between these parts?

A: No. Both the 3SMBJ5947B-TP and 1SMB5947B are ROHS3 Compliant, REACH Unaffected, and carry Moisture Sensitivity Level 1 (Unlimited). Regulatory status and environmental compliance are identical.

Q: What determines whether a Zener diode can substitute for another?

A: Substitution is determined by matching Zener voltage (Vz), tolerance, maximum power dissipation (Pmax), impedance (Zzt), reverse leakage current, forward voltage characteristics, operating temperature range, and package type. All these parameters must be identical or within the specified tolerance ranges. The 1SMB5947B meets all these criteria for the 3SMBJ5947B-TP.

Q: Does manufacturer difference affect circuit performance?

A: No. Both Micro Commercial Co and Good-Ark Semiconductor supply components meeting identical electrical and mechanical specifications. Provided all parameters match within tolerance, manufacturer difference does not affect circuit performance or reliability.

Q: Can these parts be used interchangeably in existing designs?

A: Yes. The 1SMB5947B can be used as a direct substitute in any circuit designed for the 3SMBJ5947B-TP without modification. Electrical characteristics, thermal performance, and package footprint are identical.