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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Microchip Technology SMBG5359A/TR13

Name: SMBG5359A/TR13
Brand: Microchip Technology
SKU: SMBG5359A/TR13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SMBG5359A/TR13

Manufacturer:: Microchip Technology

Category:: Single Zener Diodes

Package:: DO-215AA, SMB Gull Wing

Datasheet:: SMBG5359A/TR13.pdf

Description:: DIODE ZENER 24V 5W DO214AA

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Product details

Overview

SMBG5359A/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 24 V, ±10% tolerance, 3.5 Ω dynamic impedance at 50 mA test current, and maximum regulator current of 198 mA. It operates in the DO-215AA gull-wing package and is used for precision voltage regulation in power supply feedback loops and overvoltage protection circuits.

For engineers reviewing the SMBG5359A/TR13 datasheet, SMBG5359A/TR13 pinout, SMBG5359A/TR13 application, or SMBG5359A/TR13 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (100 A), moisture sensitivity level (MSL 1), and RoHS compliance status.

Technical Context

This device functions as a two-terminal voltage reference operating in reverse breakdown. Its regulation performance is defined by V_Z = 24 V at I_ZT = 50 mA, dynamic impedance Z_ZT = 3.5 Ω, and knee impedance Z_ZK = 400 Ω at 1 mA - indicating stable regulation across wide current ranges.

Thermal design relies on R_θJL = 25 °C/W (junction-to-lead) and R_θJA = 90 °C/W (junction-to-ambient on FR4), enabling 5.0 W dissipation only when lead temperature T_L ≤ 25 °C; derating applies above that point per Figure 1.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	24 V ±10% at 50 mA - sets regulated output voltage in feedback networks with predictable tolerance band.
Power Dissipation (P_D)	5.0 W at T_L ≤ 25 °C - requires thermal management via PCB copper pour or heatsinking to maintain safe junction temperature.
Dynamic Impedance (Z_ZT)	3.5 Ω at I_ZT = 50 mA - low impedance ensures minimal output voltage variation under load transients.
Max Regulator Current (I_ZM)	198 mA - defines absolute DC current limit before thermal runaway under sustained operation.
Surge Current (I_ZSM)	100 A (8.3 ms half-sine) - supports transient overvoltage clamping without failure in surge-prone environments.
Junction Temperature Range	–65 to +150 °C - enables deployment in industrial and automotive under-hood applications.
Moisture Sensitivity Level	MSL 1 - no dry pack or baking required prior to reflow, simplifying SMT assembly logistics.

Pinout & Package

DO-215AA gull-wing surface-mount package with cathode indicated by band; operated with banded end positive relative to anode. Leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 Method 2026.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Reference ground node	Connected to system ground or lower-potential rail; forms return path for Zener current.
Cathode	Regulated output node	Banded terminal; supplies stable 24 V reference when reverse-biased; connects to feedback divider or clamp point.

Key Features

Feature	Design Value
JEDEC 1N5359B equivalent	Identical electrical specs and test methods - enables drop-in replacement for legacy through-hole designs using adapter footprints.
Gull-wing lead form	Visible solder joints and mechanical strain relief - improves solder joint inspection and reliability in thermal cycling environments.
Non-ESD-sensitive construction	Qualified per MIL-STD-750 Method 1020 - eliminates need for ESD handling protocols during board assembly.
High surge current capability	100 A non-repetitive peak - provides robust transient suppression in DC power rails without external TVS stacking.
Level 1 moisture classification	No dry pack or baking required - reduces manufacturing overhead and avoids moisture-induced popcorning during reflow.

Applications

Switch-Mode Power Supply Feedback	Industrial Sensor Signal Conditioning
Use Scenario: Stabilizing output voltage in isolated flyback or forward converter feedback paths using optocoupler-coupled TL431 alternatives. IC Role / Device Role / Timing Role: Primary voltage reference element providing precise 24 V threshold for error amplifier biasing. Use Value: Tight ±10% V_Z tolerance and low 3.5 Ω Z_ZT ensure <±0.5% output regulation drift across line/load/temperature.	Use Scenario: Biasing and clamping analog front-end stages in 24 V-powered pressure/temperature transmitters. IC Role / Device Role / Timing Role: Dual-role device: Zener shunt regulator for sensor excitation and overvoltage clamp for ADC input protection. Use Value: 100 A surge rating absorbs induced transients from solenoid switching, preventing ADC damage without added components.
Automotive Body Control Module Protection	Programmable Logic Controller I/O Isolation
Use Scenario: Protecting microcontroller GPIOs and CAN transceiver power rails against load-dump spikes in 24 V vehicle systems. IC Role / Device Role / Timing Role: Fast-acting shunt clamp limiting rail voltage to 26.4 V (V_Z + 10%) during ISO 7637-2 Pulse 5a events. Use Value: MSL 1 rating and –65 to +150 °C operation support direct placement near high-heat sources like power relays.	Use Scenario: Providing isolated 24 V reference for digital input modules receiving signals from field sensors in factory automation. IC Role / Device Role / Timing Role: Stable voltage reference for opto-isolator LED drive circuitry and internal LDO pre-regulation. Use Value: Low Z_ZK = 400 Ω at 1 mA ensures reliable turn-on even with weak leakage-limited current sources in legacy 4–20 mA loop interfaces.

Switch-Mode Power Supply Feedback

Industrial Sensor Signal Conditioning

Use Scenario: Stabilizing output voltage in isolated flyback or forward converter feedback paths using optocoupler-coupled TL431 alternatives.

IC Role / Device Role / Timing Role: Primary voltage reference element providing precise 24 V threshold for error amplifier biasing.

Use Value: Tight ±10% V_Z tolerance and low 3.5 Ω Z_ZT ensure <±0.5% output regulation drift across line/load/temperature.

Use Scenario: Biasing and clamping analog front-end stages in 24 V-powered pressure/temperature transmitters.

IC Role / Device Role / Timing Role: Dual-role device: Zener shunt regulator for sensor excitation and overvoltage clamp for ADC input protection.

Use Value: 100 A surge rating absorbs induced transients from solenoid switching, preventing ADC damage without added components.

Automotive Body Control Module Protection

Programmable Logic Controller I/O Isolation

Use Scenario: Protecting microcontroller GPIOs and CAN transceiver power rails against load-dump spikes in 24 V vehicle systems.

IC Role / Device Role / Timing Role: Fast-acting shunt clamp limiting rail voltage to 26.4 V (V_Z + 10%) during ISO 7637-2 Pulse 5a events.

Use Value: MSL 1 rating and –65 to +150 °C operation support direct placement near high-heat sources like power relays.

Use Scenario: Providing isolated 24 V reference for digital input modules receiving signals from field sensors in factory automation.

IC Role / Device Role / Timing Role: Stable voltage reference for opto-isolator LED drive circuitry and internal LDO pre-regulation.

Use Value: Low Z_ZK = 400 Ω at 1 mA ensures reliable turn-on even with weak leakage-limited current sources in legacy 4–20 mA loop interfaces.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener regulation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N5359B	Axial-leaded T-18 package; identical V_Z, I_ZT, Z_ZT, and P_D specs; higher R_θJA (~150 °C/W).	Requires through-hole assembly; unsuitable for high-density SMT layouts; better suited for prototyping or low-volume repairs.	Select when board redesign is impractical and manual assembly is acceptable.
SMBJ5359A	DO-214AA J-bend package; same V_Z and tolerance; slightly higher Z_ZT (4.0 Ω); identical I_ZM and I_ZSM.	Lower profile than SMBG but less visible solder joints; different pad layout; marginally reduced thermal performance due to leadframe geometry.	Select when existing DO-214AA footprint exists and gull-wing inspection is not required.

Compared with SMBG5359A/TR13, 1N5359B offers identical regulation but demands through-hole assembly and has inferior thermal resistance, while SMBJ5359A matches SMT compatibility but trades off solder joint visibility and thermal conduction efficiency for compactness.

Availability

SMBG5359A/TR13 is available at Aetrix Electronics and suitable for switch-mode power supply feedback, industrial sensor signal conditioning, and automotive body control module protection requiring stable component supply and full traceability.

Supply support for SMBG5359A/TR13 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Microsemi Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal ICs, discrete devices, and timing solutions for aerospace, defense, and industrial markets.

The SMBG53xxA/B series was designed specifically to deliver JEDEC-registered Zener performance in surface-mount gull-wing packages for high-density power regulation and transient protection in harsh-environment electronics.

FAQ

What is the Zener voltage tolerance for SMBG5359A/TR13?

The SMBG5359A/TR13 has a Zener voltage tolerance of ±10%, meaning its actual breakdown voltage falls between 21.6 V and 26.4 V when measured at 50 mA test current and 25 °C. This tolerance is indicated by the "A" suffix in the part number and is verified per JEDEC test conditions specified in the Microsemi datasheet T4-LDS-0246-1.

Does SMBG5359A/TR13 require dry packing before reflow soldering?

No, SMBG5359A/TR13 does not require dry packing before reflow soldering. It is rated Moisture Sensitivity Level (MSL) 1 per IPC/JEDEC J-STD-020B, meaning it can be stored indefinitely at ambient conditions without baking or desiccant packaging. This eliminates process steps and reduces risk of moisture-induced defects during assembly.

What is the maximum continuous Zener current for SMBG5359A/TR13?

The maximum continuous Zener current (I_ZM) for SMBG5359A/TR13 is 198 mA when operated at lead temperature T_L ≤ 25 °C. This value is derived from the 5.0 W power rating and the upper limit of the Zener voltage tolerance band (24 V × 1.1 = 26.4 V), ensuring safe thermal operation under steady-state DC conditions.

How does SMBG5359A/TR13 compare to the through-hole 1N5359B?

SMBG5359A/TR13 is the surface-mount gull-wing (DO-215AA) equivalent of the axial-leaded 1N5359B, sharing identical electrical characteristics including V_Z, I_ZT, Z_ZT, and I_ZM. The primary differences are package form factor, thermal resistance (R_θJL = 25 °C/W vs. R_θJA ≈ 150 °C/W), and assembly method - making SMBG5359A/TR13 suitable for automated SMT lines.

Is SMBG5359A/TR13 RoHS compliant?

Yes, SMBG5359A/TR13 is RoHS compliant. The "TR13" suffix indicates tape-and-reel packaging, and the base part number SMBG5359A corresponds to the RoHS-compliant matte-tin plating variant per Microsemi's nomenclature (e3 marking). This version meets EU Directive 2011/65/EU and is compatible with lead-free reflow profiles up to 260 °C for 10 seconds.

SMBG5359A/TR13 Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: DO-215AA, SMB Gull Wing

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Voltage - Zener (Nom) (Vz):: 24 V

Tolerance:: ±10%

Power - Max:: 5 W

Impedance (Max) (Zzt):: 3.5 Ohms

Current - Reverse Leakage @ Vr:: 500 nA @ 17.3 V

Voltage - Forward (Vf) (Max) @ If:: 1.2 V @ 1 A

Operating Temperature:: -65°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AA (SMBG)

SMBG5359A/TR13 FAQ

1.How can I place an order for SMBG5359A/TR13 through Aetrix?

Please submit a Request for Quotation (RFQ) for SMBG5359A/TR13 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for SMBG5359A/TR13 reliable?

The price and inventory of SMBG5359A/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5359A/TR13 is usually 5 days.

3.What payment methods are accepted for SMBG5359A/TR13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5359A/TR13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SMBG5359A/TR13?

SMBG5359A/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SMBG5359A/TR13 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for SMBG5359A/TR13?

For technical support, including SMBG5359A/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5359A/TR13 requirements.

6.How does Aetrix verify that SMBG5359A/TR13 is sourced from the original manufacturer or authorized distributors?

All SMBG5359A/TR13 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMBG5359A/TR13 meets industry standards.

7.What is the process for return or replacement of SMBG5359A/TR13?

All SMBG5359A/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5359A/TR13, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The SMBG5359A/TR13 part is unused and in its original packaging.

Return procedure for SMBG5359A/TR13:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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