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Microchip Technology SMBG5366BE3/TR13
- Part No.:
- SMBG5366BE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5366BE3/TR13.pdf
- Description:
- DIODE ZENER 39V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,197
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Product details
Overview
SMBG5366BE3/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 39 V, ±5% tolerance (B suffix), 30 mA test current (IZT), 14 Ω dynamic impedance (ZZT), and maximum regulator current of 170 mA (IZM). It operates in the DO-215AA gull-wing package and is used for precision voltage regulation in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the SMBG5366BE3/TR13 datasheet, SMBG5366BE3/TR13 pinout, SMBG5366BE3/TR13 application, or SMBG5366BE3/TR13 equivalent, this page delivers verified electrical parameters, thermal performance data, JEDEC-compliant mechanical dimensions, RoHS-compliant matte-tin plating details, and validated alternative parts for industrial power management designs.
Technical Context
This device functions as a two-terminal voltage reference diode operating in reverse breakdown, delivering stable 39 V regulation across 10–170 mA operating current range. Its 14 Ω dynamic impedance at 30 mA ensures minimal voltage variation under load transients, while its 25 °C/W junction-to-lead thermal resistance supports reliable 5 W dissipation with adequate PCB copper heatsinking.
The SMBG5366BE3/TR13 uses a void-free UL94V-0 epoxy body and gull-wing leads compatible with standard reflow profiles (260 °C/10 s). It meets MIL-STD-750 method 1020 for ESD insensitivity and IPC/JEDEC J-STD-020B Level 1 moisture sensitivity-no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 39 V ±5% at 30 mA - defines precise regulation point for feedback networks |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - requires thermal design with ≥25 °C/W junction-to-lead path |
| Dynamic Impedance (ZZT) | 14 Ω at IZT = 30 mA - limits output voltage deviation to ≤420 mV for ±30 mA load swing |
| Max Regulator Current (IZM) | 170 mA - sets upper limit for sustained DC current without exceeding 5 W rating |
| Junction Temp Range | −65 to +150 °C - enables operation in extended industrial and automotive under-hood environments |
| Reverse Leakage (IR) | 0.5 µA at VR = 28.1 V - ensures negligible standby current in high-impedance bias networks |
| Surge Current (IZSM) | 170 A (8.3 ms half-sine) - withstands transient overvoltage events per IEC 61000-4-5 |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode band marking; terminals are anode and cathode only - no internal circuitry or additional pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Breakdown terminal | Connected to regulated output node; must be held positive relative to anode during operation |
| Anode | Reference terminal | Connected to ground or lower-potential rail; completes reverse-bias path for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5366B equivalence | Identical electrical specs and test methods - enables drop-in replacement in legacy designs |
| RoHS-compliant matte-tin plating | e3 suffix confirms lead-free finish compliant with IPC-J-STD-006 and EU RoHS Directive 2011/65/EU |
| Gull-wing lead geometry | Enables visual solder joint inspection and reduces tombstoning risk on FR4 boards with recommended 8.13 × 2.16 mm pad layout |
| Level 1 moisture sensitivity | No dry pack or baking required before assembly - simplifies SMT line logistics and reduces handling cost |
| High surge current rating | 170 A non-repetitive peak withstand capability - eliminates need for external TVS in many 24 V/48 V industrial systems |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback converters by sensing secondary-side voltage via optocoupler feedback network. IC Role / Device Role / Timing Role: Precision voltage reference providing 39 V threshold for error amplifier input. Use Value: Maintains ±1.5% output regulation across 10–100% load and −40 to +125 °C ambient due to low ZZT and tight VZ tolerance. |
Use Scenario: Clamps transient surges on 24 V DC bus in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Two-terminal shunt protector diverting excess energy to ground during ISO 7637-2 pulse 1/2/5a events. Use Value: Absorbs 170 A surge without failure, eliminating need for series fuse or upstream TVS in cost-sensitive designs. |
| DC-DC Converter Reference | Industrial Sensor Excitation |
Use Scenario: Provides stable 39 V bias for high-voltage op-amp stages in 4–20 mA transmitter signal conditioning. IC Role / Device Role / Timing Role: Low-noise voltage reference replacing bulkier IC-based references where space is constrained. Use Value: Delivers 14 Ω dynamic impedance and <0.5 µA leakage - minimizes sensor offset drift and improves long-term stability. |
Use Scenario: Supplies regulated excitation voltage to strain-gauge bridges in weigh-scale load cells operating in humid environments. IC Role / Device Role / Timing Role: Moisture-insensitive voltage clamp maintaining bridge bias despite condensation-induced leakage paths. Use Value: Level 1 MSL rating and UL94V-0 encapsulation prevent parametric shift or failure after 168-hour 85 °C/85% RH stress testing. |
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), IZT (30 mA), ZZT (14 Ω), but axial T-18 package; non-RoHS (Sn/Pb plating) | Requires through-hole assembly and board real estate; unsuitable for high-density SMT lines | Select when legacy repair, manual prototyping, or thermal mass requirements favor axial leaded construction. |
| SMBJ5366B | Same electrical specs and RoHS compliance, but DO-214AA J-bend package; RθJA = 90 °C/W vs. 25 °C/W (RθJL) for SMBG | Lower thermal performance in high-power continuous operation; requires larger copper area for equivalent cooling | Select when footprint compatibility with existing SMBJ footprints is prioritized over optimal thermal efficiency. |
Compared with SMBG5366BE3/TR13, 1N5366B offers identical regulation but lacks SMT manufacturability and RoHS compliance, while SMBJ5366B trades superior thermal conduction for footprint interchangeability-making SMBG5366BE3/TR13 optimal for thermally demanding, high-volume SMT production.
Availability
SMBG5366BE3/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection clamps, and industrial sensor excitation circuits requiring stable component supply, full RoHS compliance, and gull-wing solder joint visibility.
Supply support for SMBG5366BE3/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 voltage regulation in space-constrained, thermally demanding power systems-emphasizing JEDEC compatibility, robust surge handling, and zero dry-pack logistics.
FAQ
What is the Zener voltage tolerance of SMBG5366BE3/TR13?
The SMBG5366BE3/TR13 has a ±5% Zener voltage tolerance, indicated by the "B" suffix in the part number. This means its measured VZ at 30 mA test current falls between 37.05 V and 40.95 V at 25 °C. The e3 suffix confirms RoHS-compliant matte-tin plating, and TR13 denotes tape-and-reel packaging per EIA-481-1-A standard. SMBG5366BE3/TR13 maintains this tolerance across its full operating temperature range.
How does SMBG5366BE3/TR13 handle thermal dissipation in PCB designs?
SMBG5366BE3/TR13 achieves 5 W power dissipation only when junction-to-lead thermal resistance (RθJL = 25 °C/W) is maintained-requiring direct copper connection from leads to ≥1 oz FR4 thermal pads per Microsemi's recommended 8.13 × 2.16 mm layout. At ambient mounting (RθJA = 90 °C/W), its usable power drops to 1.38 W. SMBG5366BE3/TR13 must be placed away from heat sources and adjacent to thermal vias for sustained 5 W operation.
Is SMBG5366BE3/TR13 suitable for surge protection per IEC 61000-4-5?
Yes-SMBG5366BE3/TR13 is rated for 170 A non-repetitive peak surge current (IZSM) using an 8.3 ms half-sine waveform, meeting Level 3/4 requirements of IEC 61000-4-5 for 24 V/48 V industrial ports. Its low dynamic impedance (14 Ω) ensures clamping voltage stays below 41.4 V during surge, protecting downstream MOSFETs and controllers. SMBG5366BE3/TR13 is commonly deployed as primary clamp in DIN-rail power supplies without additional TVS devices.
What is the moisture sensitivity level (MSL) for SMBG5366BE3/TR13?
SMBG5366BE3/TR13 is rated MSL Level 1 per IPC/JEDEC J-STD-020B, meaning it may be stored indefinitely at ≤30 °C/60% RH without dry packing or baking prior to reflow. This eliminates moisture-related popcorning risks and simplifies SMT line logistics. The UL94V-0 epoxy body and gull-wing terminations contribute to this robustness. SMBG5366BE3/TR13 ships in sealed moisture-barrier bags with desiccant and humidity indicator cards.
Can SMBG5366BE3/TR13 replace 1N5366B in existing designs?
Yes-SMBG5366BE3/TR13 is electrically and functionally equivalent to 1N5366B per Microsemi documentation, sharing identical VZ (39 V), IZT (30 mA), ZZT (14 Ω), and IZM (170 mA). However, the SMBG5366BE3/TR13 uses DO-215AA gull-wing packaging versus T-18 axial leads, requiring PCB footprint redesign. SMBG5366BE3/TR13 also features RoHS-compliant matte-tin plating (e3), unlike the Sn/Pb finish of 1N5366B.
SMBG5366BE3/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:
- ±5%
- 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)
SMBG5366BE3/TR13 FAQ
1.How can I place an order for SMBG5366BE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5366BE3/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 SMBG5366BE3/TR13 reliable?
The price and inventory of SMBG5366BE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5366BE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5366BE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5366BE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5366BE3/TR13?
SMBG5366BE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5366BE3/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 SMBG5366BE3/TR13?
For technical support, including SMBG5366BE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5366BE3/TR13 requirements.
6.How does Aetrix verify that SMBG5366BE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5366BE3/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 SMBG5366BE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5366BE3/TR13?
All SMBG5366BE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5366BE3/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 SMBG5366BE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5366BE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5366BE3/TR13 Tags
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