Equivalent & Substitute Parts for 1SMB5922B-13

Part Overview

The 1SMB5922B-13 is a Zener diode manufactured by Diodes Incorporated, rated at 7.5 V nominal with 3 W maximum power dissipation in a surface mount SMB (DO-214AA) package. This component is classified as an active product with ROHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified to address inventory availability, extended lead times, or specific application requirements such as automotive qualification while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	7.5	V
Tolerance	±5	%
Power - Maximum	3	W
Impedance (Maximum)	3	Ohms
Current - Reverse Leakage @ 6 V	5	µA
Voltage - Forward (Maximum) @ 200 mA	1.5	V
Operating Temperature Range	-65 to 150	°C
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the 1SMB5922B-13 are qualified based on strict electrical and mechanical parameter matching. All identified substitutes maintain identical specifications across the following critical parameters:

Zener voltage: 7.5 V nominal
Tolerance: ±5%
Maximum power dissipation: 3 W
Maximum impedance: 3 Ohms
Reverse leakage current: 5 µA @ 6 V
Forward voltage: 1.5 V maximum @ 200 mA
Operating temperature range: -65°C to 150°C
Package: DO-214AA, SMB surface mount
RoHS3 compliance
Moisture sensitivity level: 1 (Unlimited)

Substitutes differ only in manufacturer (onsemi versus Diodes Incorporated), packaging format (Cut Tape & Digi-Reel versus Cut Tape; Tape & Reel versus Cut Tape), and in one case, automotive qualification (AEC-Q101). These differences do not affect electrical performance or mechanical compatibility in standard applications.

Parameter Comparison

Parameter	1SMB5922B-13 (Diodes Inc.)	1SMB5922BT3G (onsemi)	SZ1SMB5922BT3G (onsemi)
Manufacturer	Diodes Incorporated	onsemi	onsemi
Voltage - Zener (Nom)	7.5 V	7.5 V	7.5 V
Tolerance	±5%	±5%	±5%
Power - Max	3 W	3 W	3 W
Impedance (Max)	3 Ohms	3 Ohms	3 Ohms
Current - Reverse Leakage @ 6 V	5 µA	5 µA	5 µA
Voltage - Forward (Max) @ 200 mA	1.5 V	1.5 V	1.5 V
Operating Temperature	-65°C to 150°C	-65°C to 150°C	-65°C to 150°C
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Packaging Format	Cut Tape (CT)	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Automotive Qualification	—	—	AEC-Q101

Engineering Selection Recommendations

1SMB5922BT3G (onsemi) is a direct parametric equivalent available in Cut Tape and Digi-Reel packaging formats. This part maintains all electrical specifications and compliance certifications of the primary part. Selection is appropriate for applications requiring standard industrial-grade components with flexible packaging options.

SZ1SMB5922BT3G (onsemi) is a direct parametric equivalent with automotive-grade qualification (AEC-Q101) supplied in Tape & Reel format. This part is suitable for applications requiring automotive-level reliability and traceability. The AEC-Q101 qualification indicates compliance with automotive industry standards for component qualification and testing. Selection is appropriate for automotive applications or systems requiring automotive-grade component certification.

All three parts maintain identical electrical performance, thermal operating range, and regulatory compliance (ROHS3, REACH Unaffected). Selection between substitutes depends on packaging format availability, supply chain requirements, and application-specific qualification needs.

Frequently Asked Questions (FAQ)

Q: Can 1SMB5922BT3G replace 1SMB5922B-13 in existing designs?

A: Yes. The 1SMB5922BT3G maintains identical electrical parameters, operating temperature range, and package dimensions (DO-214AA, SMB). Both parts are surface mount components with equivalent zener voltage (7.5 V), power rating (3 W), and tolerance (±5%). No circuit redesign is required.

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

A: Cut Tape (CT) packaging supplies components in individual strips suitable for manual handling or small-volume assembly. Tape & Reel (TR) packaging supplies components on continuous reels optimized for automated pick-and-place assembly equipment. Electrical and mechanical specifications are identical; packaging format selection depends on assembly process requirements.

Q: When should SZ1SMB5922BT3G be selected over 1SMB5922BT3G?

A: SZ1SMB5922BT3G includes AEC-Q101 automotive qualification. This part is selected for applications requiring automotive-grade component certification, automotive supply chain traceability, or systems subject to automotive industry standards. For non-automotive applications, either part is acceptable based on packaging availability.

Q: Are all three parts RoHS3 compliant?

A: Yes. All three parts (1SMB5922B-13, 1SMB5922BT3G, and SZ1SMB5922BT3G) are ROHS3 compliant with moisture sensitivity level 1 (unlimited). All parts are REACH unaffected.

Q: Do the substitute parts have the same thermal performance?

A: Yes. All three parts share identical maximum power dissipation (3 W), operating temperature range (-65°C to 150°C), and thermal characteristics. The DO-214AA SMB package is identical across all parts.

Q: What is the impedance specification and why does it matter?

A: Maximum impedance is specified at 3 Ohms for all parts. This parameter defines the dynamic resistance of the zener diode at the specified operating point and affects voltage regulation performance. Identical impedance specifications ensure equivalent voltage regulation characteristics across all substitute parts.

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