SMB2EZ5.6D5-TP Equivalent & Substitute Parts

Part Overview

The SMB2EZ5.6D5-TP is a Zener diode manufactured by Micro Commercial Co, rated at 5.6 V nominal with 2 W maximum power dissipation in a surface mount DO-214AA (SMB) package. This component is classified as obsolete, indicating discontinued production and limited availability. Identification of equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications utilizing this Zener diode specification.

Substiute Parts

SMB2EZ5.6D5-TP

Micro Commercial CoIn Stock: 929SMB2EZ5.6D5-TP Datasheet

Current PartRFQ

3SMBJ5919B-TP

Micro Commercial CoIn Stock: 161993SMBJ5919B-TP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMB2EZ5.6D5-TP is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Zener voltage (Vz) must be 5.6 V nominal with ±5% tolerance
• Operating temperature range must encompass -55°C to 150°C (TJ)
• Forward voltage (Vf) specification of 1.5 V maximum at 200 mA
• Reverse leakage current specification of 5 µA

Mechanical Compatibility Requirements:

• Package type must be DO-214AA (SMB) surface mount
• Mounting configuration must be surface mount

Regulatory Compliance Requirements:

• ROHS3 compliance mandatory
• ECCN classification EAR99

The substitute part 3SMBJ5919B-TP meets all electrical and mechanical compatibility criteria. The primary distinction is an increased maximum power rating (3 W versus 2 W), which represents an enhancement rather than a deviation from the original specification. This higher power rating maintains full backward compatibility while providing additional thermal margin in the application circuit.

Parameter Comparison

Engineering Selection Recommendations

The 3SMBJ5919B-TP is the direct substitute for the obsolete SMB2EZ5.6D5-TP based on the following engineering criteria:

Electrical Equivalence: Both components maintain identical Zener voltage (5.6 V), tolerance (±5%), forward voltage characteristics (1.5 V @ 200 mA), and operating temperature range (-55°C to 150°C). The substitute's lower maximum impedance (2 Ohms versus 2.5 Ohms) and enhanced power rating (3 W versus 2 W) provide improved performance margins without introducing incompatibility.

Mechanical Compatibility: Both components utilize the DO-214AA (SMB) surface mount package, ensuring direct footprint compatibility on existing printed circuit boards without layout modifications.

Regulatory Compliance: The substitute part maintains ROHS3 compliance and EAR99 ECCN classification, satisfying all regulatory requirements of the original component.

Supply Chain Status: The 3SMBJ5919B-TP is classified as active product with substantial inventory availability (16,140 pieces), contrasting with the obsolete status of the original part. This ensures long-term supply reliability and production continuity.

Moisture Sensitivity: The substitute part carries MSL 1 (Unlimited) rating, indicating no moisture sensitivity constraints during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can the 3SMBJ5919B-TP be used as a direct replacement for SMB2EZ5.6D5-TP in existing designs?

A: Yes. Both components share identical Zener voltage (5.6 V), tolerance (±5%), forward voltage (1.5 V @ 200 mA), operating temperature range (-55°C to 150°C), and DO-214AA (SMB) package configuration. The substitute's enhanced power rating (3 W) and lower impedance (2 Ohms) represent performance improvements that maintain full backward compatibility.

Q: What is the primary reason for substitution?

A: The SMB2EZ5.6D5-TP is classified as obsolete, indicating discontinued manufacturing. The 3SMBJ5919B-TP is an active product with reliable supply availability, ensuring design continuity and production support.

Q: Are there any circuit design modifications required when switching to the substitute part?

A: No circuit modifications are required. The substitute part maintains all critical electrical parameters and package configuration. The enhanced power rating and lower impedance provide additional thermal and electrical margin without requiring design changes.

Q: How do the impedance specifications differ between the two parts?

A: The original part specifies maximum impedance of 2.5 Ohms, while the substitute specifies 2 Ohms maximum. The lower impedance of the substitute part improves transient response characteristics and is fully compatible with applications designed for the original specification.

Q: What is the significance of the MSL 1 rating on the substitute part?

A: MSL 1 (Unlimited) indicates the substitute part has no moisture sensitivity limitations. Components can be stored indefinitely without requiring special moisture control measures, simplifying inventory management and reducing handling constraints.

Q: Are both parts RoHS compliant?

A: Yes. Both the SMB2EZ5.6D5-TP and 3SMBJ5919B-TP are ROHS3 compliant, meeting all environmental and hazardous substance restrictions.

Q: What is the difference in reverse leakage current specifications?

A: The original part specifies 5 µA reverse leakage at 2 V, while the substitute specifies 5 µA at 3 V. This difference reflects the higher power rating of the substitute and does not affect compatibility in typical applications.