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Microchip Technology SMBG5351A/TR13
- Part No.:
- SMBG5351A/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5351A/TR13.pdf
- Description:
- DIODE ZENER 14V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,889
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Product details
Overview
SMBG5351A/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal breakdown voltage of 14 V, ±10% tolerance, 2.5 Ω dynamic impedance at 100 mA test current, and maximum regulator current of 6.7 A under thermal lead conditions. It serves as a precision voltage reference and overvoltage clamp in power supply regulation circuits.
For engineers reviewing the SMBG5351A/TR13 datasheet, SMBG5351A/TR13 pinout, SMBG5351A/TR13 application, or SMBG5351A/TR13 equivalent, this part delivers stable 14 V regulation across wide current (100 mA to 6.7 A) and temperature (–65 °C to +150 °C) ranges while supporting high-surge resilience and RoHS-compliant gull-wing mounting.
Technical Context
This device operates in reverse-biased breakdown mode with a specified Zener voltage (VZ) of 14 V measured at IZT = 100 mA and TL = 30 °C. Its low dynamic impedance (ZZT = 2.5 Ω) ensures minimal voltage variation under load transients.
The SMBG5351A/TR13 uses a DO-215AA gull-wing package with cathode band polarity marking, rated for 5.0 W at TL < 25 °C and derated to 1.38 W at TA = 25 °C on FR4 board. Thermal resistance junction-to-lead is 25 °C/W, enabling efficient heat transfer via PCB copper.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14 V ±10% - stable regulation point at 100 mA test current, usable across 12.6–15.4 V range |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - supports high-current clamping when mounted with adequate thermal path to lead |
| Dynamic Impedance (ZZT) | 2.5 Ω at IZT = 100 mA - low AC impedance ensures tight voltage control during ripple or transient events |
| Max Regulator Current (IZM) | 6.7 A - maximum DC current before exceeding 5 W rating at rated junction temperature |
| Reverse Leakage (IR) | 1.0 µA at VR = 10.1 V - negligible standby loss below breakdown threshold |
| Thermal Resistance (RθJL) | 25 °C/W - enables predictable junction temperature rise with known lead-to-PCB thermal interface |
| Surge Current (IZSM) | 6.7 A (8.3 ms half-sine) - withstands short-duration overvoltage transients without degradation |
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 |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lower-potential rail; forms return path for Zener current |
| Cathode | Regulated output node | Provides stabilized 14 V output when reverse-biased; marked with visible band on package body |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5351B equivalent | Identical electrical specs and test methods to legacy through-hole 1N5351B, enabling drop-in redesign |
| Moisture Sensitivity Level 1 | No dry pack required - simplifies SMT handling and eliminates bake-out prior to reflow |
| Gull-wing lead form | Visible solder joints enable automated optical inspection (AOI) and reliable reflow process control |
| RoHS-compliant matte-tin plating | Lead-free finish compliant with IPC/JEDEC J-STD-020B, suitable for Pb-free reflow profiles |
| High surge endurance | Rated for non-repetitive 8.3 ms half-sine surges up to 6.7 A - protects downstream circuitry from line transients |
Applications
| DC Power Supply Regulation | Overvoltage Protection Clamp |
|---|---|
|
Use Scenario: Stabilizing 14 V rail in industrial DC-DC converter feedback loop or auxiliary bias supply. IC Role / Device Role / Timing Role: Voltage reference element providing precise setpoint for error amplifier or shunt regulator IC. Use Value: Maintains ±10% regulation across 100 mA–6.7 A load range with only 2.5 Ω dynamic impedance, minimizing output drift. |
Use Scenario: Clamping transient spikes on 12 V automotive or telecom power bus. IC Role / Device Role / Timing Role: Passive overvoltage protection device diverting surge energy to ground before IC damage occurs. Use Value: Withstands 6.7 A non-repetitive surge (8.3 ms) and exhibits <1 µA leakage at 10.1 V, ensuring no false triggering. |
| Low-Profile Voltage Reference | ESD-Tolerant Signal Line Clamp |
|
Use Scenario: Providing compact 14 V reference in space-constrained embedded controller PCBs. IC Role / Device Role / Timing Role: Standalone Zener reference replacing larger TO-220 or axial-leaded alternatives. Use Value: DO-215AA footprint saves >60% board area vs. DO-204AL (1N5351B), with identical electrical performance. |
Use Scenario: Protecting RS-485 or CAN transceiver I/O pins from ESD and fast transients. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor (TVS) configured as low-capacitance clamp. Use Value: Non-sensitive to ESD per MIL-STD-750 Method 1020 and exhibits <20 pF capacitance at 0 V, preserving signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5351B | Through-hole DO-41 package; identical VZ, IZT, ZZT, and IZM specs; requires axial lead forming and wave soldering. | Used where manual assembly, high-vibration environments, or legacy board compatibility are required. | Select 1N5351B only if through-hole mounting is mandated; SMBG5351A/TR13 offers superior SMT scalability and AOI capability. |
| SMBJ5351B | J-bend DO-214AA package; same VZ and IZT, but higher ZZT (3.0 Ω) and lower IZM (6.3 A); different thermal resistance (RθJA = 90 °C/W). | Better suited for lower-power or less thermally constrained layouts where gull-wing visibility is not required. | Choose SMBJ5351B only when DO-214AA footprint is already standardized; SMBG5351A/TR13 provides better thermal conduction and visual solder inspection. |
Compared with 1N5351B and SMBJ5351B, SMBG5351A/TR13 uniquely combines JEDEC-equivalent regulation performance with gull-wing manufacturability, Level 1 moisture rating, and 25 °C/W junction-to-lead thermal resistance-enabling higher sustained power delivery in automated SMT lines.
Availability
SMBG5351A/TR13 is available at Aetrix Electronics and suitable for DC power supply regulation, overvoltage protection clamp, and low-profile voltage reference applications requiring stable component supply, consistent parametric performance, and full traceability.
Supply support for SMBG5351A/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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The SMBG53xxB series was developed to deliver JEDEC-standard Zener performance in surface-mount gull-wing packaging, targeting high-density power management and ruggedized transient protection in mission-critical systems.
FAQ
What is the Zener voltage tolerance for SMBG5351A/TR13?
The SMBG5351A/TR13 has a ±10% Zener voltage tolerance, meaning its breakdown voltage is guaranteed between 12.6 V and 15.4 V when tested at IZT = 100 mA and TL = 30 °C. This tolerance is indicated by the "A" suffix in the part number and aligns with JEDEC 1N5351B specifications.
Does SMBG5351A/TR13 require dry packing before reflow soldering?
No, SMBG5351A/TR13 has a moisture sensitivity level (MSL) of Level 1 per IPC/JEDEC J-STD-020B, so it does not require dry packing or baking prior to reflow. The device can be stored and processed directly from sealed tape-and-reel packaging without humidity exposure concerns.
What is the maximum continuous current SMBG5351A/TR13 can handle?
The SMBG5351A/TR13 supports a maximum regulator current (IZM) of 6.7 A when operated with junction temperature maintained below 150 °C and thermal lead temperature below 25 °C. At ambient conditions on FR4 board, derating reduces usable current to ~1.38 A for 5 W dissipation.
How does SMBG5351A/TR13 compare to SMBJ5351B in thermal performance?
SMBG5351A/TR13 has a junction-to-lead thermal resistance (RθJL) of 25 °C/W, significantly lower than SMBJ5351B's RθJA of 90 °C/W. This allows SMBG5351A/TR13 to sustain higher continuous power in thermally optimized layouts where heat is conducted through leads rather than ambient air.
Is SMBG5351A/TR13 RoHS compliant?
Yes, SMBG5351A/TR13 carries the "e3" RoHS compliance designation per its nomenclature, indicating annealed matte-tin plating that meets EU RoHS Directive 2011/65/EU and is compatible with Pb-free reflow profiles up to 260 °C for 10 seconds.
SMBG5351A/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:
- ±10%
- 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)
SMBG5351A/TR13 FAQ
1.How can I place an order for SMBG5351A/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5351A/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 SMBG5351A/TR13 reliable?
The price and inventory of SMBG5351A/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5351A/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5351A/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5351A/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5351A/TR13?
SMBG5351A/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5351A/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 SMBG5351A/TR13?
For technical support, including SMBG5351A/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5351A/TR13 requirements.
6.How does Aetrix verify that SMBG5351A/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5351A/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 SMBG5351A/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5351A/TR13?
All SMBG5351A/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5351A/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 SMBG5351A/TR13 part is unused and in its original packaging.
Return procedure for SMBG5351A/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5351A/TR13 Tags
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