SMBJ5381B-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The SMBJ5381B-TP is a 130 V, 5 W Zener diode manufactured by Micro Commercial Co, housed in a DO-214AA (SMB) surface mount package. This component is classified as an active product and is RoHS3 compliant. Zener diodes in this voltage and power rating are used for voltage regulation, overvoltage protection, and reference applications in electronic circuits. Identifying equivalent substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and maintain component availability across manufacturing cycles.

Substiute Parts

SMBJ5381B-TP

Micro Commercial CoIn Stock: 5284SMBJ5381B-TP Datasheet

Current PartRFQ

CZRB5381B-HF

Comchip TechnologyIn Stock: 1193CZRB5381B-HF Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMBJ5381B-TP are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Zener voltage (Nominal): 130 V
• Tolerance: ±5%
• Maximum power dissipation: 5 W
• Package type: DO-214AA (SMB)
• Mounting type: Surface Mount
• Operating temperature range: -55°C to 150°C
• Impedance (Maximum): 190 Ohms
• Reverse leakage current: 500 nA @ 98.8 V
• RoHS3 compliance
• Moisture Sensitivity Level: 1

Parts meeting all these parameters are classified as parametric equivalents and may be used interchangeably in circuit designs without modification to PCB layout or electrical design.

Parameter Comparison

Engineering Selection Recommendations

CZRB5381B-HF (Comchip Technology) is a parametric equivalent to the SMBJ5381B-TP. Both components meet identical electrical specifications for zener voltage, power rating, impedance, and reverse leakage characteristics. Both are RoHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity ratings, indicating equivalent handling and storage requirements.

The forward voltage specification differs in test current (1 mA versus 200 mA), but both maintain the same maximum forward voltage of 1.2 V, ensuring functional equivalence in circuit operation. Both components are active products with confirmed inventory availability.

Selection between these parts may be based on supply chain availability, lead time, cost considerations, or established supplier relationships, as electrical and mechanical performance are equivalent.

Frequently Asked Questions (FAQ)

Q: Can CZRB5381B-HF replace SMBJ5381B-TP in existing designs?

A: Yes. Both components are parametric equivalents with identical zener voltage (130 V), power rating (5 W), package type (DO-214AA/SMB), and operating temperature range (-55°C to 150°C). No circuit modifications or PCB layout changes are required.

Q: Are there differences in the forward voltage specifications?

A: The forward voltage maximum is 1.2 V for both parts. The difference lies in the test current: SMBJ5381B-TP is specified at 1 mA, while CZRB5381B-HF is specified at 200 mA. Both maintain the same maximum forward voltage value, ensuring functional equivalence.

Q: Do both parts have the same compliance certifications?

A: Yes. Both SMBJ5381B-TP and CZRB5381B-HF are RoHS3 compliant, REACH unaffected, and carry ECCN EAR99 classification. Both have MSL Level 1 (Unlimited) moisture sensitivity ratings.

Q: What is the package compatibility between these parts?

A: Both components use the DO-214AA (SMB) surface mount package. They are mechanically and electrically compatible for direct PCB substitution without layout modifications.

Q: Are there any impedance differences between the two parts?

A: No. Both parts have a maximum impedance (Zzt) of 190 Ohms, ensuring identical dynamic impedance characteristics in circuit applications.

Q: What is the reverse leakage current specification for both parts?

A: Both components specify 500 nA reverse leakage current at 98.8 V (Vr), providing identical leakage performance.