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Microchip Technology SMBG5366A/TR13
- Part No.:
- SMBG5366A/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5366A/TR13.pdf
- Description:
- DIODE ZENER 39V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,261
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Product details
Overview
SMBG5366A/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 39 V, ±10% tolerance (A-suffix), 30 mA test current (IZT), and 14 Ω dynamic impedance (ZZT) at IZT. It operates in reverse-biased regulation mode, delivers stable reference voltage under varying load and temperature, and is used in power supply overvoltage protection and precision DC rail clamping circuits.
For engineers reviewing the SMBG5366A/TR13 datasheet, SMBG5366A/TR13 pinout, SMBG5366A/TR13 application, or SMBG5366A/TR13 equivalent, key selection criteria include Zener voltage tolerance, maximum surge current (IZSM = 170 A), thermal resistance (RθJA = 90 °C/W on FR4), and DO-215AA gull-wing package compatibility with automated SMT assembly.
Technical Context
This device functions as a voltage-reference regulator in reverse breakdown, maintaining stable output across 10–100 mA operating current range with minimal voltage drift versus temperature (−65 to +150 °C junction range). Its low dynamic impedance (14 Ω) ensures tight regulation under transient load changes.
The SMBG5366A/TR13 uses a void-free thermosetting epoxy case (UL94V-0), matte-tin RoHS-compliant plating, and cathode band polarity marking. It meets MIL-STD-750 ESD immunity (Method 1020) and withstands non-repetitive 8.3 ms half-sine surge currents up to 170 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 39 V ±10% - Stable regulation point at 30 mA; high-end limit is 42.9 V for worst-case design margining. |
| Test Current (IZT) | 30 mA - Defined operating point where VZ and ZZT are specified; sets minimum bias requirement for regulation. |
| Dynamic Impedance (ZZT) | 14 Ω - Low AC impedance ensures <0.42 V deviation per 30 mA load step; critical for ripple suppression. |
| Max Regulator Current (IZM) | 122 mA - Maximum continuous DC current at TL < 25 °C; derates linearly above 25 °C per Figure 1. |
| Surge Current (IZSM) | 170 A - Withstands 8.3 ms half-sine transients (e.g., IEC 61000-4-5 Level 3); enables robust input-stage clamping. |
| Thermal Resistance (RθJA) | 90 °C/W - On FR4 board with recommended pad layout; requires thermal relief design for sustained 5 W operation. |
| Reverse Leakage (IR) | 0.5 µA @ 31.2 V - Ultra-low leakage below VR ensures minimal quiescent power loss in standby modes. |
Pinout & Package
Package: DO-215AA gull-wing surface-mount package (JEDEC standard), 0.1 g weight, moisture sensitivity level 1 (no dry pack required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Regulated output node | Connected to positive rail; reverse-biased to conduct and clamp voltage at VZ when exceeded. |
| Anode | Reference ground node | Connected to system ground or lower-potential rail; completes regulation path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N53xxB equivalent | Direct electrical and mechanical replacement for legacy through-hole 1N5366B; simplifies SMT migration. |
| Gull-wing lead form | Visible solder joints enable AOI inspection and rework accessibility without X-ray. |
| Level 1 moisture sensitivity | No baking or dry-pack handling required-reduces manufacturing overhead and floor-life constraints. |
| RoHS-compliant matte-tin plating | Lead-free finish compatible with Pb-free reflow profiles (260 °C/10 s max); supports global compliance mandates. |
| High surge endurance | 170 A non-repetitive surge rating allows single-device clamping of industrial-level transients. |
Applications
| Industrial Power Supply Protection | Automotive ECUs |
|---|---|
|
Use Scenario: Clamps 42 V battery dump energy in 24 V vehicle systems during alternator load-dump events. IC Role / Device Role / Timing Role: Standalone voltage clamp protecting downstream DC-DC converters and microcontrollers. Use Value: Absorbs 170 A surge without failure, eliminating need for multi-stage TVS + Zener cascades. |
Use Scenario: Stabilizes 39 V reference rail for sensor excitation in engine control modules. IC Role / Device Role / Timing Role: Precision voltage reference source for analog front-end circuitry. Use Value: ±10% VZ tolerance and 14 Ω ZZT ensure <±0.5 V drift over −40 to +125 °C ambient. |
| Telecom Line Card Protection | Medical Imaging Power Rails |
|
Use Scenario: Guards 48 V backplane rails against induced lightning surges in outdoor base stations. IC Role / Device Role / Timing Role: Primary overvoltage shunt element in telecom-grade surge protection circuits. Use Value: 170 A IZSM rating meets GR-1089-CORE Level 3 surge requirements without derating. |
Use Scenario: Regulates auxiliary 39 V supply for X-ray detector biasing in portable imaging devices. IC Role / Device Role / Timing Role: Low-noise voltage regulator ensuring stable detector gain calibration. Use Value: 0.5 µA IR at 31.2 V minimizes standby current draw, extending battery life in mobile units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5366B | Same VZ (39 V), ±5% tolerance (B-suffix), higher IZT (30 mA), lower ZZT (14 Ω), axial T-18 package. | Through-hole mounting only; unsuitable for high-density SMT layouts. | Select when legacy through-hole assembly or manual prototyping is required. |
| SMBJ5366A | Identical VZ and tolerance, but DO-214AA J-bend package; RθJA = 100 °C/W (vs. 90 °C/W for SMBG5366A/TR13). | Lower thermal performance on same PCB; may require larger copper area for equivalent power handling. | Select when existing DO-214AA footprint reuse is prioritized over optimal thermal efficiency. |
Compared with 1N5366B and SMBJ5366A, SMBG5366A/TR13 offers superior thermal resistance (90 °C/W) in a gull-wing package enabling visual solder inspection, making it optimal for high-reliability SMT production where thermal management and process control are critical.
Availability
SMBG5366A/TR13 is available at Aetrix Electronics and suitable for industrial power supply protection, automotive ECU reference rails, and telecom line card surge suppression requiring stable component supply and full traceability.
Supply support for SMBG5366A/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, RF, and timing solutions for aerospace, defense, and industrial markets.
The SMBG53xx series was designed specifically for surface-mount voltage regulation in space-constrained, high-surge environments-emphasizing JEDEC compatibility, thermal robustness, and RoHS compliance without performance trade-offs.
FAQ
What is the Zener voltage tolerance for SMBG5366A/TR13?
The SMBG5366A/TR13 has a ±10% Zener voltage tolerance, meaning its regulated voltage falls between 35.1 V and 42.9 V at 30 mA test current. This A-suffix designation is confirmed in the part nomenclature table and electrical characteristics page of the Microsemi datasheet T4-LDS-0246-1. The tolerance directly impacts worst-case design margins in overvoltage protection circuits using SMBG5366A/TR13.
Does SMBG5366A/TR13 require dry packing before SMT assembly?
No, SMBG5366A/TR13 has IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it can be stored and assembled without dry packing or baking. This is explicitly stated in the "MECHANICAL and PACKAGING" section of the datasheet and verified by its "Level 1" classification. Engineers using SMBG5366A/TR13 avoid moisture-related popcorning risks and simplify factory handling.
What is the maximum surge current rating for SMBG5366A/TR13?
The SMBG5366A/TR13 is rated for a non-repetitive peak surge current (IZSM) of 170 A, defined for an 8.3 ms half-sine waveform. This value is listed in the Electrical Characteristics table on page 3 of the Microsemi datasheet T4-LDS-0246-1. Designers rely on this rating when sizing SMBG5366A/TR13 for IEC 61000-4-5 compliant surge protection stages.
How does the thermal resistance of SMBG5366A/TR13 compare to similar Zeners?
SMBG5366A/TR13 has a junction-to-ambient thermal resistance (RθJA) of 90 °C/W when mounted on FR4 with the recommended footprint, which is lower than SMBJ5366A (100 °C/W) and significantly better than axial 1N5366B (200+ °C/W). This 10 °C/W advantage improves power dissipation headroom and reduces thermal derating in compact designs using SMBG5366A/TR13.
Is SMBG5366A/TR13 RoHS compliant?
Yes, SMBG5366A/TR13 features RoHS-compliant matte-tin plating, as confirmed in the "FEATURES" and "MECHANICAL and PACKAGING" sections of the datasheet. The "TR13" suffix indicates tape-and-reel packaging, and the absence of "e3" in the base part number does not affect RoHS status-the device meets Directive 2011/65/EU. This ensures SMBG5366A/TR13 is suitable for export-controlled and environmentally regulated applications.
SMBG5366A/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)
SMBG5366A/TR13 FAQ
1.How can I place an order for SMBG5366A/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5366A/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 SMBG5366A/TR13 reliable?
The price and inventory of SMBG5366A/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5366A/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5366A/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5366A/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5366A/TR13?
SMBG5366A/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5366A/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 SMBG5366A/TR13?
For technical support, including SMBG5366A/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5366A/TR13 requirements.
6.How does Aetrix verify that SMBG5366A/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5366A/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 SMBG5366A/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5366A/TR13?
All SMBG5366A/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5366A/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 SMBG5366A/TR13 part is unused and in its original packaging.
Return procedure for SMBG5366A/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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