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Microchip Technology SMBG5359B/TR13
- Part No.:
- SMBG5359B/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5359B/TR13.pdf
- Description:
- DIODE ZENER 24V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,347
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Product details
Overview
SMBG5359B/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal breakdown voltage of 24 V, ±5% tolerance (B suffix), 3.5 Ω dynamic impedance at 50 mA test current, and maximum regulator current of 100 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 SMBG5359B/TR13 datasheet, SMBG5359B/TR13 pinout, SMBG5359B/TR13 application, or SMBG5359B/TR13 equivalent, this page delivers verified electrical parameters, thermal performance data, JEDEC-compliant packaging details, and validated alternative parts for industrial power management designs.
Technical Context
This device functions as a silicon planar Zener diode operating in reverse-biased breakdown mode. Its 24 V nominal Zener voltage is specified at IZT = 50 mA with 3.5 Ω dynamic impedance (ZZT), and it maintains stable regulation across junction temperatures from –65 °C to +150 °C.
Thermal resistance is 25 °C/W junction-to-lead and 90 °C/W junction-to-ambient (on FR4 with recommended footprint). It supports surge currents up to 4.4 A (8.3 ms half-sine) and exhibits ≤0.5 µA reverse leakage at VR = 18.2 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24 V ±5% at IZT = 50 mA - defines precise regulation point for feedback networks |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - enables high-current regulation without external heatsink under lead-temperature control |
| Dynamic Impedance (ZZT) | 3.5 Ω at IZT = 50 mA - ensures low output voltage variation under load transients |
| Max Regulator Current (IZM) | 100 mA - sets absolute DC current limit for sustained operation at rated power |
| Reverse Leakage (IR) | ≤0.5 µA at VR = 18.2 V - guarantees minimal quiescent power loss in standby modes |
| Surge Current (IZSM) | 4.4 A (8.3 ms half-sine) - withstands common AC line surges and inductive switching spikes |
| Junction Temperature Range | –65 °C to +150 °C - supports operation in automotive under-hood and industrial motor-control environments |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band; anode and cathode terminals only; RoHS-compliant matte-tin plating; moisture sensitivity level 1 (no dry pack required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Breakdown reference terminal | Connected to regulated output node; must be held positive relative to anode for Zener conduction |
| Anode | Reference ground/reference return | Typically tied to system ground or feedback divider low-side; completes reverse-bias path |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5359B equivalent | Identical electrical specs and test methods - enables drop-in replacement for legacy through-hole designs |
| Gull-wing leads (DO-215AA) | Visible solder joints and automated optical inspection compatibility - improves manufacturing yield in high-density PCBs |
| Level 1 moisture sensitivity | No dry-pack requirement or bake-out prior to reflow - reduces handling cost and avoids moisture-induced popcorning |
| High surge current rating | 4.4 A non-repetitive peak - protects downstream circuitry from transient overvoltages without external TVS |
| Low dynamic impedance | 3.5 Ω at 50 mA - minimizes output voltage deviation during load steps in closed-loop regulators |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Clamp for 24 V Rail |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback converters using optocoupler feedback. IC Role / Device Role / Timing Role: Zener reference in secondary-side error amplifier bias network. Use Value: 24 V ±5% tolerance and 3.5 Ω ZZT ensure <±1% output regulation accuracy across line/load/temperature. |
Use Scenario: Clamps transient spikes on industrial 24 V DC control bus during relay coil de-energization. IC Role / Device Role / Timing Role: Shunt overvoltage protector limiting rail excursion to ≤25.2 V. Use Value: 4.4 A IZSM rating absorbs 8.3 ms surges without degradation, eliminating need for parallel TVS devices. |
| Programmable Logic Controller Input Protection | DC-DC Converter Reference Divider |
Use Scenario: Protects 24 V digital input channels against ESD and cable-induced transients. IC Role / Device Role / Timing Role: Primary shunt clamp ahead of series current-limiting resistor and input buffer. Use Value: ≤0.5 µA IR at 18.2 V prevents false triggering during normal operation while clamping >24 V events. |
Use Scenario: Sets precise 24 V reference point in adjustable buck converter feedback divider. IC Role / Device Role / Timing Role: Stable voltage reference for resistor-divider ratio setting. Use Value: Low 25 °C/W RθJL enables direct thermal coupling to copper pour, stabilizing VZ against board-level temperature gradients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5359B | Same 24 V ±5%, 5 W rating, but axial T-18 package with lead-forming requirements and higher RθJA (120 °C/W) | Requires through-hole mounting and manual assembly; unsuitable for automated SMT lines | Select when retrofitting legacy boards or where leaded mechanical robustness is prioritized over density |
| SMBJ5359B | Identical electrical specs and DO-214AA J-bend package; same 24 V ±5%, 5 W, 3.5 Ω ZZT, but RθJA = 85 °C/W vs. 90 °C/W | Compatible with standard SMT pick-and-place but requires different pad layout (J-bend vs. gull-wing) | Choose when existing design uses DO-214AA footprint and no rework of stencil/pad geometry is feasible |
Compared with SMBG5359B/TR13, 1N5359B demands through-hole assembly and offers inferior thermal performance, while SMBJ5359B matches electrically but mandates PCB layout adaptation for J-bend leads - making SMBG5359B/TR13 optimal for new high-density gull-wing designs requiring visible solder joints and IPC/JEDEC Level 1 handling.
Availability
SMBG5359B/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, PLC I/O modules, and 24 V DC-DC converter reference circuits requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for SMBG5359B/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, mixed-signal, and RF solutions for aerospace, defense, and industrial markets.
The SMBG53xxB series was designed specifically for surface-mount voltage regulation in space-constrained, thermally demanding power systems - delivering JEDEC-equivalent performance in gull-wing packaging with enhanced manufacturability.
FAQ
What is the Zener voltage tolerance for SMBG5359B/TR13?
The "B" suffix in SMBG5359B/TR13 denotes a ±5% Zener voltage tolerance. At 24 V nominal, this corresponds to a guaranteed range of 22.8 V to 25.2 V when measured at IZT = 50 mA and TL = 25 °C. This tolerance is confirmed in the Electrical Characteristics table on page 3 of the Microsemi datasheet T4-LDS-0246-1.
Does SMBG5359B/TR13 require dry packing before reflow soldering?
No, SMBG5359B/TR13 has a moisture sensitivity level (MSL) of Level 1 per IPC/JEDEC J-STD-020B, meaning it may be stored indefinitely at ambient conditions without dry packing or baking. The device's void-free epoxy body and Level 1 classification eliminate moisture-related reflow defects such as popcorning - a key advantage over higher-MSL Zeners.
What is the maximum surge current rating for SMBG5359B/TR13?
SMBG5359B/TR13 is rated for a non-repetitive peak surge current (IZSM) of 4.4 A, defined as the maximum value of an 8.3 ms half-sine waveform. This rating is specified in the Electrical Characteristics table and enables reliable protection against common industrial transients like relay bounce or inductive kickback without derating.
How does the thermal resistance of SMBG5359B/TR13 compare between junction-to-lead and junction-to-ambient?
SMBG5359B/TR13 has RθJL = 25 °C/W and RθJA = 90 °C/W (on FR4 with recommended footprint). The 3.6× lower junction-to-lead resistance means heat transfers efficiently to the PCB copper via the gull-wing leads - making thermal design more predictable when using internal layers as heatsinks, unlike junction-to-ambient which depends heavily on board layout and airflow.
Is SMBG5359B/TR13 RoHS compliant?
Yes, SMBG5359B/TR13 carries the "TR13" suffix indicating tape-and-reel packaging and RoHS compliance per EU Directive 2011/65/EU. The device uses annealed matte-tin plating instead of Sn/Pb, and its compliance is explicitly stated in the Features section and Mechanical/Packaging description of the Microsemi datasheet.
SMBG5359B/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:
- ±5%
- 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)
SMBG5359B/TR13 FAQ
1.How can I place an order for SMBG5359B/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5359B/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 SMBG5359B/TR13 reliable?
The price and inventory of SMBG5359B/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5359B/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5359B/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5359B/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5359B/TR13?
SMBG5359B/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5359B/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 SMBG5359B/TR13?
For technical support, including SMBG5359B/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5359B/TR13 requirements.
6.How does Aetrix verify that SMBG5359B/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5359B/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 SMBG5359B/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5359B/TR13?
All SMBG5359B/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5359B/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 SMBG5359B/TR13 part is unused and in its original packaging.
Return procedure for SMBG5359B/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5359B/TR13 Tags
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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