1SMB5935B-13 Zener Diode Equivalent & Substitute Parts

Part Overview

The 1SMB5935B-13 is a 27 V, 550 mW surface mount zener diode manufactured by Diodes Incorporated in SMB (DO-214AA) packaging. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility exist across different manufacturers or packaging configurations, enabling procurement flexibility and supply chain continuity.

Substiute Parts

1SMB5935B-13

Diodes IncorporatedIn Stock: 15251SMB5935B-13 Datasheet

Current PartRFQ

1SMB5935BT3G

onsemiIn Stock: 301561SMB5935BT3G Datasheet

DirectRFQ

SZ1SMB5935BT3G

onsemiIn Stock: 16390SZ1SMB5935BT3G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1SMB5935B-13 are qualified based on the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Zener voltage (Nominal): 27 V
• Tolerance: ±5%
• Impedance (Maximum): 23 Ohms
• Current - Reverse Leakage @ Vr: 1 µA @ 20.6 V
• Voltage - Forward (Maximum) @ If: 1.5 V @ 200 mA
• Operating Temperature Range: -65°C to 150°C

Mechanical Compatibility Criteria:

• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Moisture Sensitivity Level: 1 (Unlimited)

Compliance Criteria:

• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

The substitute parts 1SMB5935BT3G and SZ1SMB5935BT3G meet all electrical and mechanical requirements. Both are manufactured by onsemi and maintain identical zener voltage, tolerance, impedance, reverse leakage, forward voltage, and operating temperature specifications. Packaging configurations differ (Cut Tape & Digi-Reel® versus Tape & Reel), and power dissipation ratings differ (3 W versus 550 mW), but these variations do not affect functional substitution in applications where the 550 mW rating is sufficient.

Parameter Comparison

Engineering Selection Recommendations

1SMB5935B-13 (Diodes Incorporated)

Primary selection for standard industrial applications. Active product status with ROHS3 compliance and unlimited moisture sensitivity rating. Tape & Reel packaging suitable for high-volume automated assembly. 550 mW power rating appropriate for applications with defined thermal constraints.

1SMB5935BT3G (onsemi)

Direct electrical equivalent with enhanced power dissipation capability (3 W). Active product status with ROHS3 compliance. Available in Cut Tape & Digi-Reel® packaging, offering flexibility for mixed-volume procurement. Suitable for applications requiring higher thermal margin or where power dissipation may approach 550 mW limits.

SZ1SMB5935BT3G (onsemi)

Direct electrical equivalent with AEC-Q101 automotive qualification and 3 W power rating. Tape & Reel packaging configuration. Selection appropriate for automotive-grade applications or where automotive-level reliability standards are specified. Enhanced power dissipation provides thermal margin for demanding environments.

All three parts maintain identical electrical performance in zener voltage regulation, impedance, reverse leakage, and forward voltage characteristics. Selection between them is determined by packaging requirements, power dissipation margin, and automotive qualification necessity.

Frequently Asked Questions (FAQ)

Q: Can 1SMB5935BT3G replace 1SMB5935B-13 in existing designs?

A: Yes. Both parts share identical zener voltage (27 V), tolerance (±5%), impedance (23 Ohms), reverse leakage (1 µA @ 20.6 V), forward voltage (1.5 V @ 200 mA), and operating temperature range (-65°C to 150°C). Both use DO-214AA SMB surface mount packaging. The 3 W power rating of 1SMB5935BT3G exceeds the 550 mW specification of 1SMB5935B-13, providing additional thermal margin without affecting electrical function.

Q: What is the difference between 1SMB5935BT3G and SZ1SMB5935BT3G?

A: Electrical specifications are identical. The primary difference is that SZ1SMB5935BT3G carries AEC-Q101 automotive qualification, making it suitable for automotive applications. Packaging differs: 1SMB5935BT3G uses Cut Tape & Digi-Reel®, while SZ1SMB5935BT3G uses Tape & Reel. Both have 3 W power ratings.

Q: Does the 3 W power rating of onsemi parts affect circuit behavior?

A: No. Power rating indicates maximum dissipation capability. If the application circuit dissipates 550 mW or less, the 3 W rating provides additional thermal margin without changing electrical performance. Zener voltage, impedance, and leakage characteristics remain identical.

Q: Are all three parts ROHS3 compliant?

A: Yes. 1SMB5935B-13, 1SMB5935BT3G, and SZ1SMB5935BT3G are all ROHS3 compliant with REACH Unaffected status.

Q: Which part should be selected for automotive applications?

A: SZ1SMB5935BT3G is qualified to AEC-Q101 automotive standards. If automotive qualification is required, this part is the appropriate selection. For non-automotive applications, 1SMB5935B-13 or 1SMB5935BT3G are suitable.

Q: Does packaging configuration affect electrical performance?

A: No. Tape & Reel (TR) and Cut Tape & Digi-Reel® are packaging and delivery formats only. Electrical specifications and component performance are identical. Selection is based on procurement volume and assembly line requirements.

Q: What is the moisture sensitivity rating, and does it differ between parts?

A: All three parts have Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.