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Microchip Technology SMBG5351C/TR13
- Part No.:
- SMBG5351C/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5351C/TR13.pdf
- Description:
- DIODE ZENER 14V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,452
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Product details
Overview
SMBG5351C/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 14 V, ±2% tolerance (C suffix), 100 mA test current (IZT), 2.5 Ω dynamic impedance (ZZT), and 340 mA maximum regulator current (IZM). It regulates voltage in power supply feedback loops and overvoltage protection circuits across industrial and telecom systems.
For engineers reviewing the SMBG5351C/TR13 datasheet, SMBG5351C/TR13 pinout, SMBG5351C/TR13 application, or SMBG5351C/TR13 equivalent, this page delivers verified electrical parameters, DO-215AA gull-wing package details, JEDEC 1N5351C-compliant performance, thermal derating behavior, and RoHS-compliant matte-tin plating confirmation.
Technical Context
This device operates as a precision voltage reference in reverse-biased breakdown mode, maintaining stable output voltage under varying load and temperature conditions. Its 14 V Zener voltage is specified at 100 mA IZT with 2.5 Ω dynamic impedance, ensuring minimal voltage deviation across operating current range.
The SMBG5351C/TR13 uses a void-free thermosetting epoxy case (UL94V-0) and gull-wing leads with RoHS-compliant annealed matte-tin plating. It achieves junction-to-lead thermal resistance of 25 °C/W and withstands 260 °C soldering for 10 s per MIL-STD-750 method 2026.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14 V ±2% at 100 mA - defines precise regulation point for feedback networks |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - supports high-energy clamping without heatsink in short pulses |
| Dynamic Impedance (ZZT) | 2.5 Ω at 100 mA - ensures low output voltage variation under load transients |
| Max Regulator Current (IZM) | 340 mA - sets absolute DC current limit before thermal runaway |
| Reverse Leakage (IR) | 1.0 µA at 10.1 V - guarantees negligible standby current in high-impedance bias networks |
| Junction Temp Range | –65 to +150 °C - enables operation in extended industrial and automotive under-hood environments |
| Thermal Resistance RθJL | 25 °C/W - allows accurate junction temperature estimation from lead temperature measurement |
Pinout & Package
Package: DO-215AA gull-wing surface-mount package with cathode band marking; moisture sensitivity level 1 (no dry pack required); weight 0.1 g; UL94V-0 epoxy body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or common return path in shunt regulator configuration |
| Cathode | Regulated output node | Banded end; connects to input rail being regulated; carries full IZM current during clamping |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5351C equivalence | Identical electrical characteristics and test methods - enables drop-in replacement in legacy designs |
| RoHS-compliant matte-tin plating | MIL-STD-750 solderable finish - eliminates Pb-based assembly concerns while maintaining reliability |
| Level 1 moisture sensitivity | No dry pack or baking required before reflow - reduces manufacturing handling cost and risk |
| Gull-wing lead form | Visible solder joints on FR4 PCB - enables automated optical inspection (AOI) and rework accessibility |
| High surge current rating | 6.7 A non-repetitive 8.3 ms half-sine wave - protects downstream circuitry from transient overvoltage events |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Stabilizes error amplifier reference in isolated flyback converter secondary-side feedback loop. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 14 V threshold for optocoupler biasing. Use Value: Maintains ±2% output regulation across line/load/temperature with 2.5 Ω dynamic impedance limiting ripple coupling. |
Use Scenario: Clamps 12 V rail against ESD or inductive kickback in industrial PLC I/O modules. IC Role / Device Role / Timing Role: Passive overvoltage clamp absorbing transient energy above 14 V threshold. Use Value: Withstands 6.7 A surge (8.3 ms) without degradation, protecting downstream 12 V logic and analog circuitry. |
| DC-DC Converter Reference | Automotive Body Control Module |
Use Scenario: Sets regulated 14 V reference for buck converter sensing in battery-powered instrumentation. IC Role / Device Role / Timing Role: Precision Zener reference replacing higher-cost IC references where 2% tolerance suffices. Use Value: Delivers stable 14 V at 100 mA with <1 µA leakage below 10.1 V, minimizing quiescent power loss. |
Use Scenario: Provides regulated 14 V supply for LIN transceiver bias in automotive door module. IC Role / Device Role / Timing Role: Temperature-stable shunt regulator maintaining voltage across –40 to +125 °C ambient. Use Value: Operates reliably from –65 to +150 °C junction temperature with no derating up to 105 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5351C | Axial-leaded T-18 package; identical VZ, IZT, ZZT, and IZM specs; non-surface-mount form factor | Requires through-hole PCB layout and wave soldering; unsuitable for high-density SMT assemblies | Select when legacy through-hole design or manual prototyping demands axial package compatibility |
| SMBJ5351C | DO-214AA J-bend package; same electrical specs but different thermal resistance (RθJA = 90 °C/W vs. SMBG's 90 °C/W on FR4) | Lower profile than SMBG but less visible solder joint; slightly reduced mechanical robustness in vibration-prone environments | Prefer for space-constrained boards where gull-wing visibility is not required and J-bend footprint fits layout |
Compared with SMBG5351C/TR13, 1N5351C requires board-level through-hole redesign, while SMBJ5351C offers identical regulation performance in a lower-profile J-bend package-neither is pin-compatible, but both deliver the same 14 V ±2% reference with 340 mA IZM capability.
Availability
SMBG5351C/TR13 is available at Aetrix Electronics and suitable for switch-mode power supply feedback, overvoltage protection clamping, and DC-DC converter reference applications requiring stable component supply, RoHS compliance, and gull-wing surface-mount reliability.
Supply support for SMBG5351C/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 SMBG53xx series was designed specifically for surface-mount voltage regulation and transient suppression in high-density power systems, offering JEDEC-compliant performance in the compact DO-215AA gull-wing package.
FAQ
What is the Zener voltage tolerance of SMBG5351C/TR13?
The SMBG5351C/TR13 has a Zener voltage tolerance of ±2%, indicated by the "C" suffix in the part number. This means its measured VZ falls between 13.72 V and 14.28 V when tested at 100 mA (IZT) and 25 °C. The tighter tolerance enables higher-accuracy regulation in feedback networks compared to ±5% (B suffix) or ±10% (A suffix) variants of the SMBG5351 series.
Does SMBG5351C/TR13 require dry packing before reflow soldering?
No, SMBG5351C/TR13 does not require dry packing prior to reflow soldering. It carries IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it can be stored indefinitely at ≤30 °C/60% RH without baking. This eliminates pre-reflow baking steps and reduces manufacturing complexity and cost in high-volume SMT lines.
What is the maximum surge current rating for SMBG5351C/TR13?
The SMBG5351C/TR13 has a maximum non-repetitive Zener surge current (IZSM) of 6.7 A for an 8.3 ms half-sine waveform. This value is confirmed in the Electrical Characteristics table on page 3 of the Microsemi datasheet T4-LDS-0246-1. It reflects the device's ability to absorb transient energy without failure in overvoltage protection applications.
How does the thermal resistance of SMBG5351C/TR13 compare between junction-to-lead and junction-to-ambient?
SMBG5351C/TR13 has a junction-to-lead thermal resistance (RθJL) of 25 °C/W and a junction-to-ambient resistance (RθJA) of 90 °C/W when mounted on an FR4 PCB with 1 oz copper and the recommended pad layout. The 25 °C/W RθJL enables accurate thermal modeling using lead temperature measurements, while the 90 °C/W RθJA defines power derating limits in natural convection environments.
Is SMBG5351C/TR13 compatible with lead-free reflow processes?
Yes, SMBG5351C/TR13 features RoHS-compliant annealed matte-tin plating and is rated for 260 °C peak solder temperature for 10 seconds, fully compliant with IPC/JEDEC J-STD-020D lead-free reflow profiles. Its gull-wing geometry also supports reliable wetting and visual inspection during lead-free assembly.
SMBG5351C/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):
- 14 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 10.1 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)
SMBG5351C/TR13 FAQ
1.How can I place an order for SMBG5351C/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5351C/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 SMBG5351C/TR13 reliable?
The price and inventory of SMBG5351C/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5351C/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5351C/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5351C/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5351C/TR13?
SMBG5351C/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5351C/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 SMBG5351C/TR13?
For technical support, including SMBG5351C/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5351C/TR13 requirements.
6.How does Aetrix verify that SMBG5351C/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5351C/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 SMBG5351C/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5351C/TR13?
All SMBG5351C/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5351C/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 SMBG5351C/TR13 part is unused and in its original packaging.
Return procedure for SMBG5351C/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5351C/TR13 Tags
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