SMBJ5924A/TR13 Equivalent & Substitute Parts

Part Overview

The SMBJ5924A/TR13 is a Zener diode rated at 9.1 V nominal with 2 W maximum power dissipation, manufactured by Microchip Technology. This surface mount component operates across a temperature range of -65°C to 150°C and is housed in a DO-214AA (SMB) package. The part is currently Active in product status with 676 pieces available in inventory. Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing, improved compliance status, higher power ratings, or different packaging configurations while maintaining core electrical functionality.

Substiute Parts

SMBJ5924A/TR13

Microchip TechnologyIn Stock: 779SMBJ5924A/TR13 Datasheet

Current PartRFQ

SMBJ5924BE3/TR13

Microchip TechnologyIn Stock: 2098SMBJ5924BE3/TR13 Datasheet

Parametric EquivalentRFQ

1SMB5924B-13

Diodes IncorporatedIn Stock: 417301SMB5924B-13 Datasheet

SimilarRFQ

CZRB5346B-HF

Comchip TechnologyIn Stock: 15016CZRB5346B-HF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ5924A/TR13 is determined by the following critical parameters: nominal Zener voltage (9.1 V), maximum power dissipation capability, voltage tolerance, impedance characteristics, reverse leakage current, forward voltage drop, operating temperature range, and surface mount package compatibility. All identified substitute parts maintain the 9.1 V nominal Zener voltage and DO-214AA/SMB package form factor, ensuring mechanical and electrical compatibility in the circuit application. Variations in tolerance, power rating, impedance, and compliance status define the substitution categories.

Parameter Comparison

Engineering Selection Recommendations

SMBJ5924BE3/TR13 (Parametric Equivalent): This Microchip Technology part is a direct parametric equivalent with identical 9.1 V nominal voltage, 2 W power rating, and operating temperature range. The primary distinction is improved voltage tolerance (±5% versus ±10%) and ROHS3 compliance status. This part is suitable for applications requiring tighter voltage regulation and environmental compliance. Packaging is available in Cut Tape and Digi-Reel® format with higher inventory availability (2075 pieces).

1SMB5924B-13 (Similar - Higher Power Rating): Manufactured by Diodes Incorporated, this part maintains the 9.1 V nominal voltage and ±5% tolerance with an elevated 3 W maximum power rating. The impedance is reduced to 4 Ohms, and forward voltage is specified at 1.5 V @ 200 mA. This configuration is applicable in circuits requiring higher power dissipation capability while maintaining the same Zener voltage. ROHS3 compliance and significantly higher inventory (41700 pieces) support broad availability.

CZRB5346B-HF (Similar - Highest Power Rating): Manufactured by Comchip Technology, this part provides the highest power dissipation at 5 W with the lowest impedance (2 Ohms) among all substitutes. Nominal Zener voltage remains 9.1 V with ±5% tolerance. The operating temperature range is -55°C to 150°C (reduced lower limit by 10°C). This part is selected for applications with elevated thermal requirements or higher current handling demands. ROHS3 compliance and substantial inventory (14999 pieces) ensure availability.

Frequently Asked Questions (FAQ)

Q: Can SMBJ5924BE3/TR13 be used as a direct replacement for SMBJ5924A/TR13?

A: Yes. Both parts share identical nominal Zener voltage (9.1 V), maximum power rating (2 W), impedance (4.5 Ohms), and operating temperature range (-65°C to 150°C). The SMBJ5924BE3/TR13 offers improved voltage tolerance (±5% versus ±10%) and ROHS3 compliance. Electrical performance in the circuit is equivalent.

Q: What is the primary difference between the main part and 1SMB5924B-13?

A: The 1SMB5924B-13 provides higher maximum power dissipation (3 W versus 2 W) and lower impedance (4 Ohms versus 4.5 Ohms). Both maintain 9.1 V nominal Zener voltage and ±5% tolerance. Selection depends on circuit power requirements and thermal design constraints.

Q: When should CZRB5346B-HF be selected over other substitutes?

A: CZRB5346B-HF is selected when maximum power dissipation capability (5 W) and minimum impedance (2 Ohms) are required. The reduced lower operating temperature limit (-55°C versus -65°C) must be evaluated against application requirements. This part is suitable for high-current Zener regulation circuits.

Q: Are all substitute parts available in the same package format?

A: All substitute parts use the DO-214AA (SMB) surface mount package, ensuring mechanical compatibility. Packaging delivery formats differ: SMBJ5924A/TR13 and 1SMB5924B-13 and CZRB5346B-HF are supplied in Tape & Reel (TR), while SMBJ5924BE3/TR13 is available in Cut Tape (CT) and Digi-Reel® formats.

Q: What compliance certifications apply to these parts?

A: SMBJ5924A/TR13 is RoHS non-compliant. SMBJ5924BE3/TR13, 1SMB5924B-13, and CZRB5346B-HF are all ROHS3 compliant. All parts are REACH Unaffected and classified under ECCN EAR99. Compliance requirements should be verified against specific application and regulatory standards.

Q: How do tolerance specifications affect circuit performance?

A: SMBJ5924A/TR13 specifies ±10% tolerance, while all substitute parts specify ±5% tolerance. Tighter tolerance improves voltage regulation accuracy and reduces circuit performance variation across production batches. Applications requiring precise Zener voltage control benefit from the ±5% tolerance parts.

Q: Is reverse leakage current a critical selection factor?

A: Reverse leakage current affects circuit quiescent current and temperature stability. SMBJ5924A/TR13, SMBJ5924BE3/TR13, and 1SMB5924B-13 specify 5 µA @ 7 V. CZRB5346B-HF specifies 7.5 µA @ 6.9 V. For low-power applications, the lower leakage specifications are preferred.