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Microchip Technology SMBG5368A/TR13
- Part No.:
- SMBG5368A/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5368A/TR13.pdf
- Description:
- DIODE ZENER 47V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,424
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Product details
Overview
SMBG5368A/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 47 V, ±10% tolerance (A suffix), 25 Ω dynamic impedance at 25 mA test current, and 2.7 A maximum surge current rating. It regulates voltage in power supply feedback loops and overvoltage protection circuits across industrial and telecom equipment.
For engineers reviewing the SMBG5368A/TR13 datasheet, SMBG5368A/TR13 pinout, SMBG5368A/TR13 application, or SMBG5368A/TR13 equivalent, this page delivers verified electrical specs, DO-215AA gull-wing package details, JEDEC 1N5368A compatibility, and real-world design guidance for voltage reference and clamping use cases.
Technical Context
This device operates as a precision voltage reference in reverse-biased breakdown mode, maintaining stable 47 V regulation across 1.0 mA to 25 mA operating current range. Its 25 Ω dynamic impedance ensures minimal voltage variation under load transients.
The SMBG5368A/TR13 uses a void-free thermosetting epoxy case rated UL94V-0, with gull-wing matte-tin terminals solderable per MIL-STD-750 Method 2026. It achieves IPC/JEDEC J-STD-020B Level 1 moisture sensitivity - no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 47 V ±10% at IZT = 25 mA - defines regulated output voltage with 4.7 V tolerance band for feedback loop design margin. |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - supports continuous regulation in compact PCB layouts with adequate lead heat sinking. |
| Dynamic Impedance (ZZT) | 25 Ω at IZT = 25 mA - limits output voltage deviation to ≤0.625 V per 25 mA load step change. |
| Max Surge Current (IZSM) | 2.7 A (8.3 ms half-sine) - withstands transient overvoltage events without degradation in telecom line protection. |
| Reverse Leakage (IR) | 0.5 µA at VR = 33.8 V - ensures negligible standby current in high-impedance bias networks. |
| Junction Temp Range | –65 °C to +150 °C - enables operation in extended-temperature industrial control and automotive under-hood modules. |
| Thermal Resistance (RθJL) | 25 °C/W - allows direct thermal modeling from junction to PCB copper land for reliability prediction. |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode band marking; polarity requires banded end to be positive relative to anode during operation. Weight: 0.1 g. Moisture sensitivity level: IPC/JEDEC J-STD-020B Level 1 - no dry pack required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Positive terminal in reverse-bias regulation | Connected to regulated node; must be held at higher potential than anode to maintain Zener conduction. |
| Anode | Reference/ground terminal | Typically tied to system ground or feedback divider low-side; completes current path through external series resistor. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5368A equivalence | Identical electrical characteristics and testing - enables drop-in replacement in legacy designs using axial 1N5368A. |
| Gull-wing lead form | Visible solder joints on FR4 PCB - simplifies AOI inspection and improves process yield in high-volume SMT assembly. |
| RoHS-compliant matte-tin plating | Meets IPC-J-STD-006B solderability requirements - eliminates Pb-based reflow concerns while maintaining wetting performance. |
| Level 1 moisture sensitivity | No baking or dry pack needed before reflow - reduces handling cost and avoids moisture-induced popcorning failure. |
| High surge current capability | 2.7 A non-repetitive peak (8.3 ms) - protects downstream circuitry from lightning-induced surges in telecom interface stages. |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Clamp for DC Bus |
|---|---|
|
Use Scenario: Regulates output voltage in isolated flyback converter feedback path via optocoupler-coupled TL431 replacement. IC Role / Device Role / Timing Role: Precision 47 V reference enabling ±1% output regulation across line/load/temperature. Use Value: Replaces bulkier 1N5368A axial part while maintaining identical VZ stability and thermal derating behavior. |
Use Scenario: Clamps 48 V telecom DC bus against transient spikes exceeding 60 V during hot-swap events. IC Role / Device Role / Timing Role: Fast-acting shunt protector absorbing up to 2.7 A surge without latch-up or parametric shift. Use Value: Prevents damage to downstream DC-DC converters by limiting bus voltage to 52 V (VZ + ΔVZ) during 8.3 ms surges. |
| Industrial Sensor Excitation Reference | Programmable Current Source Bias |
|
Use Scenario: Provides stable 47 V excitation for high-impedance piezoresistive pressure sensors in factory automation systems. IC Role / Device Role / Timing Role: Low-drift voltage source delivering <10 ppm/°C effective TC when operated at fixed IZ. Use Value: Enables 0.1% full-scale accuracy over –40 °C to +85 °C ambient without active compensation circuitry. |
Use Scenario: Sets reference voltage for LM334-based 10 mA constant-current source powering LED arrays. IC Role / Device Role / Timing Role: Fixed 47 V node defining compliance limit and thermal foldback threshold. Use Value: Ensures current regulation remains stable despite input voltage variations from 50 V to 70 V supply rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5368A | Axial-leaded T-18 package; identical VZ, IZT, ZZT, and PD; 100 °C/W RθJA vs. 90 °C/W for SMBG5368A/TR13. | Requires through-hole assembly and larger board area; unsuitable for high-density SMT production. | Select 1N5368A only for prototyping or legacy repair where footprint compatibility is mandatory. |
| SMBJ5368A | DO-214AA J-bend package; same VZ, tolerance, and electrical specs; 100 °C/W RθJA due to smaller thermal pad area. | Lower thermal performance under sustained 5 W load; preferred for space-constrained but lower-power applications. | Choose SMBJ5368A when board layout prohibits gull-wing leads but SMT is required and average power < 2 W. |
Compared with 1N5368A and SMBJ5368A, SMBG5368A/TR13 offers superior thermal resistance (90 °C/W) and visible solder joints for automated optical inspection - making it optimal for high-reliability, high-volume SMT manufacturing of regulated power supplies.
Availability
SMBG5368A/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, telecom DC bus protection, industrial sensor excitation, and programmable current source biasing requiring stable component supply and RoHS-compliant packaging.
Supply support for SMBG5368A/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 and mixed-signal components for aerospace, defense, and industrial markets.
The SMBG53xxA/B series was designed specifically for surface-mount voltage regulation and transient suppression in space-constrained, high-density power systems where JEDEC compatibility and thermal robustness are critical.
FAQ
What is the Zener voltage tolerance for SMBG5368A/TR13?
The 'A' suffix in SMBG5368A/TR13 indicates a ±10% Zener voltage tolerance. At 25 °C and 25 mA test current, the measured VZ falls between 42.3 V and 51.7 V. This tolerance band is defined per JEDEC standard and confirmed in the Electrical Characteristics table on page 3 of Microsemi's T4-LDS-0246-1 datasheet.
Does SMBG5368A/TR13 require dry packing before reflow soldering?
No, SMBG5368A/TR13 has IPC/JEDEC J-STD-020B Level 1 moisture sensitivity - the lowest classification - meaning it can be stored and processed without dry packing or baking. The device's void-free epoxy encapsulation and Level 1 rating eliminate moisture-related popcorning risk during standard lead-free reflow profiles.
Is SMBG5368A/TR13 compatible with the axial 1N5368A diode?
Yes, SMBG5368A/TR13 is electrically and functionally equivalent to 1N5368A per Microsemi documentation: identical Zener voltage, test current, dynamic impedance, power rating, and surge capability. The only differences are package (DO-215AA gull-wing vs. T-18 axial) and thermal resistance - making it a direct functional replacement in most designs.
What is the maximum continuous power dissipation for SMBG5368A/TR13?
SMBG5368A/TR13 is rated for 5.0 W continuous power dissipation at lead temperature (TL) below 25 °C. When mounted on an FR4 PCB with recommended footprint, its power derates linearly above 25 °C at 55.6 mW/°C - reaching 1.38 W at 25 °C ambient temperature per Figure 1 in the datasheet.
How is polarity marked on SMBG5368A/TR13?
SMBG5368A/TR13 uses a cathode band marking on the body - the banded end is the cathode and must be biased positively relative to the anode to operate in Zener breakdown. This polarity convention matches all JEDEC-standard Zener diodes including 1N5368A and is confirmed in the Mechanical and Packaging section of the datasheet.
SMBG5368A/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):
- 47 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 25 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 33.8 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)
SMBG5368A/TR13 FAQ
1.How can I place an order for SMBG5368A/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5368A/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 SMBG5368A/TR13 reliable?
The price and inventory of SMBG5368A/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5368A/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5368A/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5368A/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5368A/TR13?
SMBG5368A/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5368A/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 SMBG5368A/TR13?
For technical support, including SMBG5368A/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5368A/TR13 requirements.
6.How does Aetrix verify that SMBG5368A/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5368A/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 SMBG5368A/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5368A/TR13?
All SMBG5368A/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5368A/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 SMBG5368A/TR13 part is unused and in its original packaging.
Return procedure for SMBG5368A/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5368A/TR13 Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
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