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Microchip Technology SMBG5366C/TR13
- Part No.:
- SMBG5366C/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5366C/TR13.pdf
- Description:
- DIODE ZENER 39V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,567
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Product details
Overview
SMBG5366C/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal breakdown voltage of 39 V, ±2% tolerance (C suffix), DO-215AA gull-wing package, and maximum Zener current of 170 mA at 25 °C lead temperature. It regulates voltage in power supply feedback loops, overvoltage protection circuits, and reference voltage generation for industrial power converters.
For engineers reviewing the SMBG5366C/TR13 datasheet, SMBG5366C/TR13 pinout, SMBG5366C/TR13 application, or SMBG5366C/TR13 equivalent, key selection criteria include Zener voltage tolerance, surge current rating (IZSM = 170 A), thermal resistance (RθJL = 25 °C/W), and RoHS-compliant matte-tin plating compatibility with lead-free reflow.
Technical Context
This device operates as a precision voltage reference in reverse-biased mode, maintaining stable regulation across 1.0 mA to 170 mA Zener current (IZ) with dynamic impedance ZZT = 14 Ω at IZT = 30 mA. Its low RθJL (25 °C/W) enables reliable 5 W dissipation when mounted on FR4 with recommended footprint.
The SMBG5366C/TR13 exhibits minimal voltage drift versus temperature (−65 °C to +150 °C junction range) and withstands non-repetitive 8.3 ms half-sine surges up to 170 A (IZSM), meeting MIL-STD-750 ESD robustness requirements without external protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 39 V ±2% at IZT = 30 mA - ensures tight reference accuracy for feedback sensing in 48 V DC-DC converters. |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - supports continuous regulation in compact power supplies with adequate heat sinking. |
| Max Zener Current (IZM) | 170 mA - defines safe DC operating limit before thermal runaway under full-rated power. |
| Dynamic Impedance (ZZT) | 14 Ω at IZT = 30 mA - low AC impedance maintains stable output voltage under varying load transients. |
| Surge Current (IZSM) | 170 A (8.3 ms half-sine) - absorbs lightning-induced or switching-induced transients without failure. |
| Junction Temp Range | −65 °C to +150 °C - enables operation in automotive under-hood and industrial motor drive environments. |
| Thermal Resistance | RθJL = 25 °C/W - allows direct thermal path to PCB copper, critical for sustained 5 W operation. |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode band marking; terminals are anode and cathode only. Moisture sensitivity level 1 - no dry pack required prior to assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or return path; establishes reference potential for Zener biasing. |
| Cathode | Regulated output node | Banded end; connects to feedback point or protected rail - voltage at this terminal is clamped to 39 V ±2%. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5366B equivalent | Identical electrical specs and test methods - enables drop-in replacement in legacy designs using axial 1N5366B. |
| RoHS-compliant matte-tin plating | Meets IPC/JEDEC J-STD-020B Level 1 moisture classification - eliminates baking requirement and supports lead-free reflow. |
| Gull-wing lead form | Visible solder joints per DO-215AA - enables automated optical inspection (AOI) and improves solder joint reliability vs. J-bend packages. |
| High surge capability | 170 A non-repetitive surge rating - protects downstream circuitry from IEC 61000-4-5 line surges without additional TVS staging. |
Applications
| Industrial Power Supply Feedback | Automotive Battery Protection |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback converters for PLC I/O modules. IC Role / Device Role / Timing Role: Zener diode providing precise 39 V reference to optocoupler feedback network. Use Value: ±2% tolerance ensures <±1% output regulation over line/load/temperature, reducing need for post-regulation LDOs. | Use Scenario: Clamping 48 V battery rail against load-dump transients in commercial vehicle ECUs. IC Role / Device Role / Timing Role: Primary overvoltage clamp absorbing 170 A surge energy during ISO 16750-2 load dump events. Use Value: 170 A IZSM rating handles 120 V/100 ms transients without degradation, eliminating need for parallel TVS devices. |
| Programmable Logic Controller Input Protection | Telecom DC-DC Reference |
Use Scenario: Protecting 24 V digital input channels from field-wiring induced surges in factory automation systems. IC Role / Device Role / Timing Role: Shunt regulator limiting input voltage to 39 V before signal conditioning circuitry. Use Value: Low ZZT (14 Ω) prevents voltage overshoot during fast transients, preserving input stage integrity. | Use Scenario: Generating stable 39 V reference for analog monitoring circuits in 48 V telecom rectifiers. IC Role / Device Role / Timing Role: Precision voltage reference establishing calibration baseline for ADCs and DACs. Use Value: −65 °C to +150 °C operating range ensures reference stability across outdoor cabinet temperature extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5366B | Axial-leaded T-18 package; identical VZ = 39 V ±5%, IZM = 170 mA, but higher RθJA (125 °C/W). | Requires through-hole mounting and larger board area; unsuitable for high-density SMT layouts. | Select SMBG5366C/TR13 for surface-mount designs requiring visible solder joints and moisture-level-1 handling. |
| SMBJ5366C | DO-214AA J-bend package; same VZ, tolerance, and IZM, but RθJL = 30 °C/W and no gull-wing visual inspection capability. | Limited thermal performance in high-power density applications; less compatible with AOI due to hidden solder joints. | Choose SMBG5366C/TR13 when thermal management and automated inspection are critical design constraints. |
Compared with 1N5366B and SMBJ5366C, SMBG5366C/TR13 delivers superior thermal resistance (25 °C/W), gull-wing visibility for process control, and RoHS-compliant matte-tin plating - making it optimal for high-reliability, high-density industrial power designs where long-term solder joint integrity and moisture resilience matter.
Availability
SMBG5366C/TR13 is available at Aetrix Electronics and suitable for industrial power supply feedback, automotive battery protection, and programmable logic controller input protection requiring stable component supply and full traceability.
Supply support for SMBG5366C/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 SMBG53xx series was developed to deliver JEDEC-identical Zener performance in a gull-wing surface-mount package optimized for high-density, high-surge, and moisture-resilient power regulation applications.
FAQ
What is the Zener voltage tolerance of SMBG5366C/TR13?
The SMBG5366C/TR13 has a Zener voltage tolerance of ±2%, indicated by the "C" suffix in its part number. This means its breakdown voltage is guaranteed between 38.22 V and 39.78 V when measured at 30 mA test current and 25 °C lead temperature, enabling high-accuracy voltage references in feedback networks.
Does SMBG5366C/TR13 require dry packing before reflow soldering?
No, SMBG5366C/TR13 does not require dry packing. It carries IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it can be stored indefinitely at ambient conditions without baking. This simplifies manufacturing logistics and eliminates risk of popcorning during lead-free reflow.
What is the maximum surge current rating for SMBG5366C/TR13?
The SMBG5366C/TR13 has a maximum non-repetitive surge current (IZSM) rating of 170 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, Rev. 1, and supports robust transient suppression in automotive and industrial environments.
How does the thermal resistance of SMBG5366C/TR13 compare to axial alternatives?
SMBG5366C/TR13 has a junction-to-lead thermal resistance (RθJL) of 25 °C/W, significantly lower than the axial 1N5366B's RθJA of 125 °C/W. This enables more efficient heat transfer to the PCB copper, allowing SMBG5366C/TR13 to sustain full 5 W dissipation with proper layout - unlike axial parts limited by ambient convection.
Is SMBG5366C/TR13 RoHS compliant?
Yes, SMBG5366C/TR13 is RoHS compliant, as indicated by the "e3" marking option and explicitly stated in the Features section of the datasheet. It uses annealed matte-tin plating per MIL-STD-750 method 2026 and meets all substance restrictions under Directive 2011/65/EU.
SMBG5366C/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):
- 39 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 14 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 28.1 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)
SMBG5366C/TR13 FAQ
1.How can I place an order for SMBG5366C/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5366C/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 SMBG5366C/TR13 reliable?
The price and inventory of SMBG5366C/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5366C/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5366C/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5366C/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5366C/TR13?
SMBG5366C/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5366C/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 SMBG5366C/TR13?
For technical support, including SMBG5366C/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5366C/TR13 requirements.
6.How does Aetrix verify that SMBG5366C/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5366C/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 SMBG5366C/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5366C/TR13?
All SMBG5366C/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5366C/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 SMBG5366C/TR13 part is unused and in its original packaging.
Return procedure for SMBG5366C/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5366C/TR13 Tags
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