SMBZ5925B-E3/52 Equivalent & Substitute Parts

Part Overview

The SMBZ5925B-E3/52 is a 10 V, 3 W Zener diode manufactured by Vishay General Semiconductor - Diodes Division in the DO-214AA (SMB) surface mount package. This component is classified as an active product and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1). The device operates across a temperature range of -55°C to 150°C and is suitable for voltage regulation and transient protection applications in electronic circuits. Equivalent and substitute parts are identified to provide design flexibility, support supply chain continuity, and accommodate specific application requirements such as automotive qualification or alternative packaging formats.

Substiute Parts

SMBZ5925B-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 6210SMBZ5925B-E3/52 Datasheet

Current PartRFQ

SZ1SMB5925BT3G

onsemiIn Stock: 17912SZ1SMB5925BT3G Datasheet

MFR RecommendedRFQ

3SMBJ5925B-TP

Micro Commercial CoIn Stock: 4617133SMBJ5925B-TP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMBZ5925B-E3/52 are qualified based on electrical and mechanical parameter alignment within the allowed tolerances for this product category. The substitution logic is structured as follows:

Primary Substitution Criteria:

• Zener voltage: 10 V nominal with ±5% tolerance
• Power dissipation: 3 W maximum
• Impedance: 4.5 Ohms maximum
• Forward voltage: 1.5 V maximum at 200 mA
• Package type: DO-214AA / SMB surface mount
• RoHS3 compliance and MSL 1 rating

Substitute Classification:

MFR Recommended Substitute (SZ1SMB5925BT3G): This onsemi part meets all core electrical parameters and adds automotive-grade qualification (AEC-Q101) with an extended lower operating temperature limit (-65°C vs. -55°C). Reverse leakage current is 5 µA at 8 V, which is superior to the main part specification. Packaging is Tape & Reel (TR).

Parametric Equivalent Substitute (3SMBJ5925B-TP): This Micro Commercial Co part matches all electrical specifications with identical reverse leakage performance (5 µA at 8 V). Operating temperature range is -55°C to 150°C, matching the main part. Packaging is Cut Tape (CT) & Digi-Reel®, providing alternative supply chain options.

Parameter Comparison

Engineering Selection Recommendations

SMBZ5925B-E3/52 (Vishay General Semiconductor): Select this part for applications requiring the original manufacturer specification. The device is active, RoHS3 compliant, and maintains full compatibility with existing designs. Suitable for general-purpose voltage regulation and transient suppression in consumer and industrial applications.

SZ1SMB5925BT3G (onsemi): Select this substitute for automotive applications or designs requiring AEC-Q101 qualification. The extended lower operating temperature range (-65°C) provides additional thermal margin in cold-environment applications. Superior reverse leakage performance (5 µA vs. 25 µA) reduces standby current consumption. Recommended for automotive-grade circuit protection and voltage regulation.

3SMBJ5925B-TP (Micro Commercial Co): Select this parametric equivalent for applications where Cut Tape or Digi-Reel® packaging is preferred or required by procurement specifications. Electrical performance matches the main part with improved reverse leakage characteristics (5 µA). Operating temperature range aligns with the original specification. Suitable for high-volume production environments where alternative packaging formats reduce handling and storage costs.

All three parts are active products with RoHS3 compliance and unlimited moisture sensitivity level, ensuring compatibility with modern manufacturing processes and environmental regulations.

Frequently Asked Questions (FAQ)

Q: Can SZ1SMB5925BT3G be used as a direct replacement for SMBZ5925B-E3/52?

A: Yes. Both parts share identical nominal Zener voltage (10 V), power rating (3 W), impedance (4.5 Ohms), and forward voltage specifications. The onsemi part includes AEC-Q101 automotive qualification and operates at lower temperatures (-65°C minimum vs. -55°C). Reverse leakage is superior (5 µA vs. 25 µA). The part is electrically and mechanically compatible in DO-214AA / SMB surface mount applications.

Q: What is the difference between the packaging formats offered?

A: SMBZ5925B-E3/52 and SZ1SMB5925BT3G are supplied in Tape & Reel (TR) format, suitable for automated pick-and-place assembly. The 3SMBJ5925B-TP is available in Cut Tape (CT) & Digi-Reel® format, which provides flexibility for lower-volume production runs or manual assembly processes. All three formats are compatible with the DO-214AA / SMB package footprint.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. SMBZ5925B-E3/52, SZ1SMB5925BT3G, and 3SMBJ5925B-TP are all RoHS3 compliant with MSL 1 (unlimited moisture sensitivity level). All parts meet current environmental and regulatory requirements for electronic component manufacturing and use.

Q: Which substitute part has the lowest reverse leakage current?

A: Both SZ1SMB5925BT3G and 3SMBJ5925B-TP specify 5 µA reverse leakage at 8 V, compared to 25 µA for the original SMBZ5925B-E3/52. Lower reverse leakage reduces standby power consumption in voltage regulation and protection circuits.

Q: Is automotive qualification required for my application?

A: Automotive qualification (AEC-Q101) is required only for applications in automotive or safety-critical environments. The SZ1SMB5925BT3G carries AEC-Q101 qualification. For non-automotive applications, SMBZ5925B-E3/52 and 3SMBJ5925B-TP are suitable alternatives without automotive-specific requirements.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. All three parts use the DO-214AA / SMB surface mount package with identical footprints and pinouts. Electrical parameters are within specification tolerances, allowing direct substitution on the same printed circuit board without layout modifications.

Q: What is the operating temperature range for each part?

A: SMBZ5925B-E3/52 and 3SMBJ5925B-TP operate from -55°C to 150°C. SZ1SMB5925BT3G extends the lower limit to -65°C, providing additional thermal margin for cold-environment applications. All three parts maintain the same upper temperature limit of 150°C.