Equivalent & Substitute Parts Reference: SMBJ5949A/TR13 Zener Diode

Part Overview

The Microchip Technology SMBJ5949A/TR13 is a Zener diode with a nominal Zener voltage of 100 V, 2 W power rating, ±10% voltage tolerance, and a DO-214AA (SMBJ) surface-mount package. The device is RoHS non-compliant, has an operating temperature of -65°C to 150°C, and is supplied in Tape & Reel (TR) format. The product is active with 910 pieces currently in stock.

Sourcing alternative models for SMBJ5949A/TR13 is often required due to inventory management, compliance requirements (such as RoHS), or specific application needs. Engineering teams may need to ensure supply continuity or align with environmental directives, necessitating compatible substitute part selection.

Substiute Parts

SMBJ5949A/TR13

Microchip TechnologyIn Stock: 999SMBJ5949A/TR13 Datasheet

Current PartRFQ

1SMB5949BT3G

onsemiIn Stock: 509491SMB5949BT3G Datasheet

SimilarRFQ

SZ1SMB5949BT3G

onsemiIn Stock: 1931SZ1SMB5949BT3G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution is based exclusively on the following key parameters relevant to the Zener diode category:

• Voltage - Zener (Nom) (Vz): 100 V
• Tolerance: Acceptable if equal or tighter tolerance
• Power - Max: Must be ≥2 W
• Impedance (Max) (Zzt): Must be ≤250 Ohms
• Current - Reverse Leakage @ Vr: ≤1 µA @ 76 V
• Voltage - Forward (Vf) (Max): ≤1.2 V @ 200 mA or as specified
• Operating Temperature: Must match the range provided (-65°C ~ 150°C)
• Package compatibility: DO-214AA (SMB) surface-mount
• Compliance attributes: RoHS, REACH, Moisture Sensitivity Level (MSL)

Only parts that meet all given criteria above are included as substitutes. Substitute part numbers analyzed: 1SMB5949BT3G, SZ1SMB5949BT3G.

Parameter Comparison

Engineering Selection Recommendations

All substitute Zener diodes listed (1SMB5949BT3G, SZ1SMB5949BT3G) are active, meet or exceed the SMBJ5949A/TR13 electrical and mechanical parameters, and comply with RoHS3 and REACH requirements. The original part is RoHS non-compliant. Substitute parts offer equivalent Zener voltage, maximum impedance, reverse leakage current, and compatible package and mounting type. Substitutes provide tighter voltage tolerance (±5%) and greater power rating (3 W). Moisture Sensitivity Level (MSL) and operating temperature range are identical. Substitute parts therefore fully align where regulatory compliance or additional power handling is required.

Frequently Asked Questions (FAQ)

Q1: What key parameters are critical for substituting Zener diodes in the DO-214AA, SMB package?
A1: Voltage rating, power rating, tolerance, maximum impedance, reverse leakage current, forward voltage at rated test current, operating temperature range, and package compatibility are critical.

Q2: Are the listed substitute diodes fully cross-compatible in all applications?
A2: Substitute diodes listed match the electrical, mechanical, and compliance parameters provided, ensuring compatibility in applications designed for the specific parameters of SMBJ5949A/TR13.

Q3: How do tolerance and power ratings of substitutes affect their suitability?
A3: Substitute parts provide the same nominal Zener voltage, tighter tolerance (±5% vs. ±10%), and higher power rating, allowing direct substitution without reduction in performance.

Q4: Do the package and mounting type differ between SMBJ5949A/TR13 and its substitutes?
A4: All compared devices use the DO-214AA, SMB surface-mount package, ensuring mechanical and footprint compatibility.

Q5: Are RoHS and REACH statuses important in selection?
A5: Substitute parts are RoHS3 compliant and REACH unaffected, which is required for environmental directive alignment where original part is RoHS non-compliant.

Q6: Is MSL (Moisture Sensitivity Level) the same across all parts?
A6: All listed parts have MSL 1 (Unlimited), indicating no restrictions for standard handling and mounting processes.