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Microchip Technology SMBG5366AE3/TR13
- Part No.:
- SMBG5366AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5366AE3/TR13.pdf
- Description:
- DIODE ZENER 39V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,447
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Product details
Overview
SMBG5366AE3/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 39 V, ±10% tolerance (A suffix), and DO-215AA gull-wing package. It delivers stable voltage regulation across wide current and temperature ranges, supports high-surge stress handling, and is used in power supply overvoltage protection and DC rail stabilization circuits.
For engineers reviewing the SMBG5366AE3/TR13 datasheet, SMBG5366AE3/TR13 pinout, SMBG5366AE3/TR13 application, or SMBG5366AE3/TR13 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (RθJL = 25 °C/W), maximum regulator current (IZM = 122 mA), surge current rating (IZSM = 170 A), and RoHS-compliant matte-tin plating.
Technical Context
This device operates in reverse-biased breakdown mode to maintain a stable reference voltage under varying load and line conditions. Its dynamic impedance (ZZT = 14 Ω at IZT = 30 mA) ensures low voltage variation with current changes, and its moisture sensitivity level is IPC/JEDEC Level 1-no dry pack required.
The SMBG5366AE3/TR13 features cathode band polarity marking, gull-wing leads for visible solder joint inspection, and is rated for 260 °C solder temperature (10 s). It complies with JEDEC 1N5366B electrical characteristics and shares identical test methods and performance limits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 39 V ±10% - defines regulated output voltage under nominal test current |
| Test Current (IZT) | 30 mA - operating point where VZ is specified and dynamic impedance measured |
| Max Dynamic Impedance (ZZT) | 14 Ω - small-signal AC impedance affecting regulation stability at IZT |
| Max Regulator Current (IZM) | 122 mA - maximum continuous DC current at 25 °C lead temperature, defining safe power limit |
| Surge Current (IZSM) | 170 A - non-repetitive peak half-sine surge (8.3 ms) capability for transient suppression |
| Thermal Resistance (RθJL) | 25 °C/W - junction-to-lead thermal path efficiency, critical for heatsinkless PCB mounting |
| Power Dissipation (PD) | 5.0 W @ TL < 25 °C - rated power at lead temperature, derates linearly above 25 °C per Figure 1 |
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 | Current entry terminal in forward bias; reference node in reverse-bias regulation | Connected to lower-potential side of regulated circuit; forms return path for Zener current |
| Cathode | Current exit terminal in forward bias; Zener voltage reference node in reverse bias | Marked with band; connected to higher-potential rail being stabilized; sets regulated output voltage |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5366B Equivalent | Identical electrical specs and test methodology-enables drop-in replacement in legacy designs |
| RoHS Compliant Matte-Tin Plating | e3 suffix confirms lead-free finish compliant with IPC J-STD-020B Level 1 moisture sensitivity |
| Gull-Wing Lead Geometry | Enables visual solder joint inspection and reliable reflow on FR4 boards with recommended pad layout |
| High Surge Withstand (170 A) | Supports robust transient protection without external crowbar circuitry in 5 W-class applications |
| Low Dynamic Impedance (14 Ω) | Minimizes output voltage deviation under load transients-critical for precision reference buffering |
Applications
| Switch-Mode Power Supply Clamp | Industrial Sensor Reference Stabilization |
|---|---|
Use Scenario: Clamping flyback transformer leakage energy in offline SMPS secondary-side snubber networks. IC Role / Device Role / Timing Role: Zener diode acting as voltage clamp to limit peak voltage across rectifier diode and capacitor. Use Value: Prevents overvoltage failure of output rectifier and bulk capacitor using SMBG5366AE3/TR13's 39 V regulation and 170 A surge rating. | Use Scenario: Providing stable 39 V reference for analog front-end amplifiers in 4–20 mA loop-powered sensors. IC Role / Device Role / Timing Role: Passive voltage reference element stabilizing excitation voltage for bridge-based pressure/temperature transducers. Use Value: Maintains <±1% output stability over -40 to +125 °C due to SMBG5366AE3/TR13's low dynamic impedance and thermal resistance. |
| DC Bus Overvoltage Protection | Programmable Logic Controller Input Conditioning |
Use Scenario: Protecting 36–42 V DC bus rails in factory automation systems against load-dump transients. IC Role / Device Role / Timing Role: Standby shunt regulator that conducts only during overvoltage events exceeding 39 V threshold. Use Value: Absorbs up to 5 W continuously or 170 A surges without derating, eliminating need for active TVS arrays in cost-sensitive PLC power modules. | Use Scenario: Conditioning 24 V digital input signals in modular I/O cards to tolerate ±15% supply variation and ESD. IC Role / Device Role / Timing Role: Zener-based clamping network limiting input voltage to safe logic levels while maintaining noise margin. Use Value: Leverages SMBG5366AE3/TR13's non-sensitive ESD behavior (MIL-STD-750 Method 1020) and 14 Ω ZZT for repeatable clamping threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5366B | Identical VZ, IZT, ZZT, and IZM; axial-leaded T-18 package instead of DO-215AA | Requires through-hole PCB assembly; unsuitable for high-density SMT layouts | Select when legacy through-hole compatibility or manual prototyping is prioritized over automated SMT production. |
| SMBJ5366B | Same VZ and tolerance; J-bend DO-214AA package; RθJA = 100 °C/W vs. 90 °C/W for SMBG | Lower thermal performance on same PCB footprint; slightly reduced surge margin due to different leadframe geometry | Choose when DO-214AA footprint is already standardized and minor thermal derating is acceptable. |
Compared with 1N5366B and SMBJ5366B, SMBG5366AE3/TR13 provides optimal thermal performance (RθJL = 25 °C/W) and visual solder inspection capability in gull-wing form-making it preferred for high-reliability SMT power regulation where lead temperature control and process traceability matter.
Availability
SMBG5366AE3/TR13 is available at Aetrix Electronics and suitable for switch-mode power supply clamp, industrial sensor reference stabilization, and DC bus overvoltage protection requiring stable component supply, full RoHS compliance, and verified surge withstand capability.
Supply support for SMBG5366AE3/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 5 W Zener regulation in space-constrained, thermally demanding environments-emphasizing mechanical robustness, surge resilience, and JEDEC-compliant interchangeability.
FAQ
What is the Zener voltage tolerance of SMBG5366AE3/TR13?
The 'A' suffix in SMBG5366AE3/TR13 indicates a ±10% Zener voltage tolerance. At 39 V nominal, this means the actual VZ falls between 35.1 V and 42.9 V when measured at IZT = 30 mA and TL = 25 °C. This tolerance is confirmed in the Electrical Characteristics table on page 3 of Microsemi document T4-LDS-0246-1.
Does SMBG5366AE3/TR13 require dry packing before reflow soldering?
No, SMBG5366AE3/TR13 does not require dry packing. Its moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1, meaning it can be stored indefinitely at ambient conditions (≤30 °C / 60% RH) without baking prior to reflow. This is explicitly stated in the Applications/Benefits section and Maximum Ratings table of the official datasheet.
What is the maximum surge current rating for SMBG5366AE3/TR13?
SMBG5366AE3/TR13 has a maximum non-repetitive Zener surge current (IZSM) of 170 A. This value is specified for an 8.3 ms half-sine waveform and appears in the Electrical Characteristics table on page 3 of Microsemi's T4-LDS-0246-1 datasheet under the SMBG5366B row.
How does the DO-215AA package of SMBG5366AE3/TR13 differ from DO-214AA?
The DO-215AA package of SMBG5366AE3/TR13 uses gull-wing leads for visible solder joints and lower RθJL (25 °C/W), whereas DO-214AA (used in SMBJ5366B) has J-bend leads and higher thermal resistance. Both are surface-mount, but DO-215AA enables better thermal transfer and optical inspection-key for high-reliability power regulation.
Is SMBG5366AE3/TR13 compatible with lead-free reflow profiles?
Yes, SMBG5366AE3/TR13 is fully compatible with lead-free reflow. Its e3 suffix denotes RoHS-compliant matte-tin plating, and the datasheet specifies a 260 °C solder temperature rating for 10 seconds-meeting IPC/JEDEC J-STD-020D requirements for Pb-free assembly. The device is qualified for standard SAC305 reflow profiles.
SMBG5366AE3/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:
- ±10%
- 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)
SMBG5366AE3/TR13 FAQ
1.How can I place an order for SMBG5366AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5366AE3/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 SMBG5366AE3/TR13 reliable?
The price and inventory of SMBG5366AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5366AE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5366AE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5366AE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5366AE3/TR13?
SMBG5366AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5366AE3/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 SMBG5366AE3/TR13?
For technical support, including SMBG5366AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5366AE3/TR13 requirements.
6.How does Aetrix verify that SMBG5366AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5366AE3/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 SMBG5366AE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5366AE3/TR13?
All SMBG5366AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5366AE3/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 SMBG5366AE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5366AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5366AE3/TR13 Tags
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MM5Z5V1ST1G
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