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Microchip Technology SMBG5369CE3/TR13
- Part No.:
- SMBG5369CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5369CE3/TR13.pdf
- Description:
- DIODE ZENER 51V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,274
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Product details
Overview
SMBG5369CE3/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 51 V, ±2% tolerance (C suffix), rated test current of 25 mA, dynamic impedance of 27 Ω at IZT, and maximum regulator current of 230 mA. 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 SMBG5369CE3/TR13 datasheet, SMBG5369CE3/TR13 pinout, SMBG5369CE3/TR13 application, or SMBG5369CE3/TR13 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (RθJL = 25 °C/W), surge current capability (IZSM = 230 A), and RoHS-compliant matte-tin plating for lead-free assembly.
Technical Context
This device functions as a two-terminal voltage reference operating in reverse breakdown, with Zener voltage specified at 51 V ±2% under 25 mA DC test current (IZT). Its low dynamic impedance (27 Ω) ensures stable regulation across varying load currents, and its 5 W power rating is valid only when lead temperature (TL) is maintained below 25 °C.
The SMBG5369CE3/TR13 uses a void-free thermosetting epoxy case (UL94V-0), cathode polarity marked by a band, and gull-wing leads compatible with standard SMT reflow profiles up to 260 °C for 10 s. Moisture sensitivity level is IPC/JEDEC Level 1 - no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 51 V ±2% at IZT = 25 mA - defines precise regulation point for feedback networks |
| Power Dissipation (PD) | 5.0 W at TL ≤ 25 °C - requires thermal management via PCB copper pour or heatsink attachment to lead |
| Dynamic Impedance (ZZT) | 27 Ω at 25 mA - low AC impedance minimizes output voltage variation under dynamic load changes |
| Max Regulator Current (IZM) | 230 mA - maximum continuous DC current before exceeding 5 W derated power limit |
| Surge Current (IZSM) | 230 A (8.3 ms half-sine) - supports transient overvoltage clamping without failure |
| Reverse Leakage (IR) | 0.5 µA at VR = 40.3 V - negligible standby current in high-impedance bias networks |
| Thermal Resistance (RθJL) | 25 °C/W - enables accurate junction temperature estimation from measured lead temperature |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by a band on the body. Leads are annealed matte-tin plated per RoHS (e3), solderable per MIL-STD-750 method 2026. Weight: 0.1 g. Moisture sensitivity level: IPC/JEDEC J-STD-020B Level 1 - no dry pack required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or low-side return path; must be electrically stable |
| Cathode | Regulated output node | Banded end; supplies regulated 51 V to feedback divider or clamp circuit |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5369B equivalent | Identical electrical specs and test methods - enables drop-in replacement in legacy designs |
| ±2% Zener voltage tolerance | Enables tighter regulation than ±5% (B) or ±10% (A) variants - critical for precision feedback |
| Gull-wing lead form (DO-215AA) | Provides visible solder joints for automated optical inspection (AOI) and reliable reflow wetting |
| Level 1 moisture sensitivity | Eliminates baking requirement prior to assembly - reduces manufacturing cost and handling risk |
| 260 °C solder tolerance | Compatible with standard lead-free reflow profiles without degradation or delamination |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Used in TL431-based or discrete op-amp feedback networks to regulate 51 V output rails in telecom DC/DC converters. IC Role / Device Role / Timing Role: Precision voltage reference element defining setpoint for error amplifier comparison. Use Value: ±2% tolerance ensures output voltage remains within ±0.5% of target under line/load transients. |
Use Scenario: Placed across DC bus in motor drives to clamp surges above 51 V during regenerative braking events. IC Role / Device Role / Timing Role: Passive shunt clamp absorbing energy until crowbar or shutdown activates. Use Value: 230 A surge rating handles repetitive 8.3 ms transients without parameter shift or failure. |
| Industrial Sensor Excitation | Programmable Reference Source |
Use Scenario: Provides stable 51 V excitation for high-voltage piezoresistive pressure sensors in oil & gas downhole tools. IC Role / Device Role / Timing Role: Fixed-voltage current source driver via series resistor. Use Value: Low 27 Ω dynamic impedance maintains <0.1% voltage deviation across sensor current range. |
Use Scenario: Paired with DAC and op-amp in calibration equipment to generate traceable 51 V reference outputs. IC Role / Device Role / Timing Role: Primary voltage reference stage in metrology-grade instrumentation. Use Value: Level 1 moisture rating and RoHS-compliant plating support long-term stability in controlled lab environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5369B | Same 51 V ±2%, but axial T-18 package; RθJA = 120 °C/W vs. 90 °C/W for SMBG5369CE3/TR13 | Requires through-hole mounting and larger board area; unsuitable for high-density SMT layouts | Select when legacy through-hole assembly or manual prototyping is required |
| SMBJ5369B | Same 51 V ±5%, DO-214AA J-bend package; higher RθJL = 30 °C/W; IZM = 210 mA | Lower voltage tolerance and reduced surge margin; optimized for cost-sensitive consumer applications | Select when ±5% regulation suffices and JEDEC 1N5369B compatibility is not mandatory |
Compared with 1N5369B and SMBJ5369B, SMBG5369CE3/TR13 delivers tighter ±2% regulation, superior thermal performance (RθJL = 25 °C/W), and RoHS compliance - making it optimal for space-constrained industrial and telecom power systems requiring long-term stability.
Availability
SMBG5369CE3/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, and industrial sensor excitation requiring stable component supply, consistent parametric performance, and RoHS-compliant manufacturing.
Supply support for SMBG5369CE3/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 to deliver JEDEC-identical 5 W Zener performance in compact surface-mount packages for next-generation power conversion and protection systems demanding precision, ruggedness, and manufacturability.
FAQ
What is the Zener voltage tolerance for SMBG5369CE3/TR13?
The SMBG5369CE3/TR13 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in the part number. This means its measured VZ falls between 49.98 V and 52.02 V when tested at IZT = 25 mA and TL = 25 °C. This tighter tolerance supports precision regulation where ±5% variants would introduce unacceptable output drift in SMBG5369CE3/TR13-based feedback networks.
Can SMBG5369CE3/TR13 replace 1N5369B in existing designs?
Yes - SMBG5369CE3/TR13 is a direct surface-mount functional and electrical replacement for the axial-leaded 1N5369B, with identical VZ, IZT, ZZT, and IZM. The SMBG5369CE3/TR13 uses DO-215AA packaging instead of T-18, so PCB layout must be updated for gull-wing footprint and reflow profile, but no circuit redesign is needed for SMBG5369CE3/TR13 integration.
What is the maximum surge current rating for SMBG5369CE3/TR13?
The SMBG5369CE3/TR13 is rated for a non-repetitive peak surge current (IZSM) of 230 A, defined as 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. It reflects the device's ability to absorb transient energy without parametric shift - a key specification for SMBG5369CE3/TR13 in overvoltage clamp applications.
Is SMBG5369CE3/TR13 RoHS compliant?
Yes - the "e3" suffix in SMBG5369CE3/TR13 indicates RoHS-compliant annealed matte-tin plating, verified per EU Directive 2011/65/EU. The device contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits. This makes SMBG5369CE3/TR13 suitable for export to EU markets and modern lead-free SMT assembly lines.
What is the thermal resistance from junction to lead (RθJL) for SMBG5369CE3/TR13?
The SMBG5369CE3/TR13 has a thermal resistance of RθJL = 25 °C/W, as specified in the Maximum Ratings table on page 1 of the datasheet. This parameter allows designers to estimate junction temperature using measured lead temperature - critical for reliability validation. For example, at 230 mA and 51 V, power dissipation is ~11.7 W, so ΔTJL = 293 °C unless actively cooled - confirming SMBG5369CE3/TR13 must operate within its 5 W rating at TL ≤ 25 °C.
SMBG5369CE3/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):
- 51 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 27 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 36.7 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)
SMBG5369CE3/TR13 FAQ
1.How can I place an order for SMBG5369CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5369CE3/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 SMBG5369CE3/TR13 reliable?
The price and inventory of SMBG5369CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5369CE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5369CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5369CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5369CE3/TR13?
SMBG5369CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5369CE3/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 SMBG5369CE3/TR13?
For technical support, including SMBG5369CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5369CE3/TR13 requirements.
6.How does Aetrix verify that SMBG5369CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5369CE3/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 SMBG5369CE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5369CE3/TR13?
All SMBG5369CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5369CE3/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 SMBG5369CE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5369CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5369CE3/TR13 Tags
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MM5Z5V1ST1G
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