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Microchip Technology SMBG5350B/TR13
- Part No.:
- SMBG5350B/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5350B/TR13.pdf
- Description:
- DIODE ZENER 13V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,747
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Product details
Overview
SMBG5350B/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal breakdown voltage of 13 V, ±5% tolerance (B suffix), 100 mA test current (IZT), and dynamic impedance of 2.5 Ω at IZT - used for precision voltage regulation in power supply feedback loops, overvoltage protection, and reference circuits.
For engineers reviewing the SMBG5350B/TR13 datasheet, SMBG5350B/TR13 pinout, SMBG5350B/TR13 application, or SMBG5350B/TR13 equivalent, key selection criteria include Zener voltage accuracy, surge current capability (7.0 A), thermal resistance (90 °C/W on FR4), and RoHS-compliant matte-tin gull-wing termination in DO-215AA package.
Technical Context
This device operates in reverse-biased breakdown mode to maintain stable voltage across wide current (100 mA IZT to 7.0 A IZSM) and temperature (-65 to +150 °C) ranges. Its low dynamic impedance (2.5 Ω) ensures minimal voltage variation under load transients.
The SMBG5350B/TR13 uses a void-free thermosetting epoxy body (UL94V-0), cathode band polarity marking, and gull-wing leads compatible with standard reflow profiles (260 °C/10 s). It meets MIL-STD-750 ESD robustness requirements and has IPC/JEDEC Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13 V ±5% at 100 mA - defines regulated output voltage in feedback or clamp circuits |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - sets maximum continuous power handling with adequate heatsinking |
| Dynamic Impedance (ZZT) | 2.5 Ω at 100 mA - determines voltage stability under varying load current |
| Max Surge Current (IZSM) | 7.0 A (8.3 ms half-sine) - enables transient overvoltage clamping without failure |
| Thermal Resistance (RθJA) | 90 °C/W on FR4 (1 oz Cu) - dictates required PCB copper area for thermal management |
| Reverse Leakage (IR) | 1.0 µA at 9.4 V - ensures low standby power loss in high-impedance bias networks |
| Junction Temperature | -65 to +150 °C - supports operation in industrial and automotive under-hood environments |
Pinout & Package
DO-215AA gull-wing surface-mount package with two terminals: anode and cathode. Cathode identified by molded band; device operated with banded end positive relative to anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Regulated output node | Connected to voltage node requiring stabilization; reverse-biased during regulation |
| Anode | Reference/return path | Typically tied to ground or lower-potential rail; completes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5350B equivalent | Direct electrical and mechanical replacement for legacy axial 1N5350B in space-constrained designs |
| RoHS-compliant matte-tin plating | Enables lead-free reflow assembly without solderability degradation or whisker risk |
| Level 1 moisture sensitivity | Eliminates dry-pack requirement and floor-life tracking for production logistics |
| High surge current rating | Withstands 7.0 A non-repetitive surges - suitable for input-stage transient suppression |
| Gull-wing lead geometry | Provides visual solder-joint inspection and reliable mechanical anchoring on FR4 boards |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Reference |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback converters via optocoupler feedback network. IC Role / Device Role / Timing Role: Precision voltage reference establishing error amplifier setpoint. Use Value: 13 V ±5% tolerance and 2.5 Ω dynamic impedance ensure <±1% output regulation across line/load/temperature. |
Use Scenario: Providing stable excitation voltage for bridge-based pressure or strain sensors. IC Role / Device Role / Timing Role: Low-drift DC reference source for ratiometric analog signal conditioning. Use Value: 1.0 µA leakage at 9.4 V minimizes offset error in high-impedance sensor bias networks. |
| Automotive Load Dump Protection | Programmable Overvoltage Clamp |
Use Scenario: Clamping 12 V rail transients up to 40 V during alternator load dump events. IC Role / Device Role / Timing Role: Fast-acting shunt protector diverting surge energy to ground. Use Value: 7.0 A peak surge current rating handles ISO 7637-2 Pulse 5a without degradation. |
Use Scenario: Setting adjustable trip threshold in microcontroller-based overvoltage detection circuits. IC Role / Device Role / Timing Role: Programmable clamp node referenced to MCU ADC input. Use Value: Tight 13 V ±5% tolerance enables accurate 12 V system monitoring with <0.65 V margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5350B | Axial-leaded T-18 package; identical electrical specs but larger footprint and manual assembly requirement | Preferred for through-hole prototyping or legacy board rework where SMT is unavailable | Select when board-level repair or hand-soldering is needed; not suitable for automated high-density assembly |
| SMBJ5350B | DO-214AA J-bend package; same VZ/IZT/IZM but higher RθJA (100 °C/W vs. 90 °C/W) and different pad layout | Better suited for designs with constrained height but less thermal margin on standard FR4 | Choose when vertical clearance is critical and thermal derating can be accommodated via layout optimization |
Compared with 1N5350B and SMBJ5350B, the SMBG5350B/TR13 delivers optimal balance of thermal performance (90 °C/W), visual solder inspection (gull-wing), and RoHS compliance - making it the preferred choice for new SMT power supply and protection designs.
Availability
SMBG5350B/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor interfaces, automotive load-dump protection, and programmable overvoltage clamps requiring stable component supply across extended product lifecycles.
Supply support for SMBG5350B/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 timing solutions for aerospace, defense, and industrial markets.
The SMBG53xxB series was designed specifically for surface-mount voltage regulation in high-density power systems where thermal reliability, surge resilience, and JEDEC compatibility are mandatory.
FAQ
What is the Zener voltage tolerance for SMBG5350B/TR13?
The "B" suffix in SMBG5350B/TR13 denotes ±5% Zener voltage tolerance. At 25 °C, its breakdown voltage is specified as 13 V ±5%, meaning the actual measured VZ falls between 12.35 V and 13.65 V when tested at 100 mA (IZT). This tolerance is confirmed in the Electrical Characteristics table on page 3 of the Microsemi datasheet T4-LDS-0246-1.
Does SMBG5350B/TR13 require dry packing before use?
No, SMBG5350B/TR13 does not require dry packing. It carries IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it may be stored indefinitely at ambient conditions (<30 °C / 60% RH) without baking or humidity-controlled packaging. This simplifies inventory handling and eliminates floor-life tracking for SMBG5350B/TR13 in production environments.
What is the maximum surge current rating for SMBG5350B/TR13?
The SMBG5350B/TR13 has a maximum non-repetitive peak surge current (IZSM) of 7.0 A, defined per an 8.3 ms half-sine waveform. This value is explicitly listed in the Electrical Characteristics table for SMBG5350B on page 3 of the Microsemi datasheet and reflects its capability to absorb transient energy without parametric shift or failure.
Is SMBG5350B/TR13 RoHS compliant?
Yes, SMBG5350B/TR13 is RoHS compliant. The "TR13" suffix indicates tape-and-reel packaging, and the base part number SMBG5350B (without e3 suffix) defaults to RoHS-compliant matte-tin plating per Microsemi's standard offering for this series, as stated in the Features section on page 1 of T4-LDS-0246-1.
What is the thermal resistance junction-to-ambient for SMBG5350B/TR13?
The thermal resistance junction-to-ambient (RθJA) for SMBG5350B/TR13 is 90 °C/W when mounted on a standard FR4 printed circuit board with 1 oz copper and the recommended pad layout per the datasheet. This value appears in the Maximum Ratings table on page 1 and directly informs PCB copper area requirements for safe 5 W operation.
SMBG5350B/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):
- 13 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 9.4 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)
SMBG5350B/TR13 FAQ
1.How can I place an order for SMBG5350B/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5350B/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 SMBG5350B/TR13 reliable?
The price and inventory of SMBG5350B/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5350B/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5350B/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5350B/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5350B/TR13?
SMBG5350B/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5350B/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 SMBG5350B/TR13?
For technical support, including SMBG5350B/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5350B/TR13 requirements.
6.How does Aetrix verify that SMBG5350B/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5350B/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 SMBG5350B/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5350B/TR13?
All SMBG5350B/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5350B/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 SMBG5350B/TR13 part is unused and in its original packaging.
Return procedure for SMBG5350B/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5350B/TR13 Tags
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BZX84C3V3LT1G
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MMSZ4682T1G
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MM5Z5V1ST1G
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