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Microchip Technology SMBG5369C/TR13
- Part No.:
- SMBG5369C/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5369C/TR13.pdf
- Description:
- DIODE ZENER 51V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,126
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Product details
Overview
SMBG5369C/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 51 V, ±2% tolerance (C suffix), DO-215AA gull-wing package, 25 mA test current, and 27 Ω dynamic impedance at IZT; used for precision voltage regulation in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the SMBG5369C/TR13 datasheet, SMBG5369C/TR13 pinout, SMBG5369C/TR13 application, or SMBG5369C/TR13 equivalent, this page delivers verified electrical specs, thermal derating behavior, JEDEC-compliant replacement context, RoHS-compliant matte-tin plating details, and real-world design implications for high-surge industrial power rails.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown with minimal voltage variation across 10–100 mA operating current. Its 27 Ω dynamic impedance at 25 mA ensures stable regulation under load transients, while the 25 °C junction temperature coefficient supports predictable drift in ambient ranges up to +150 °C.
The DO-215AA gull-wing package enables visible solder joints and achieves RθJA = 90 °C/W on FR4 (1 oz Cu) and RθJL = 25 °C/W to lead-critical for thermal management in compact 5 W power regulation designs where heat sinking is constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 51 V ±2% at 25 mA - defines precise clamping threshold for feedback or protection circuits |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - requires thermal design attention above 25 °C per derating curve |
| Dynamic Impedance (ZZT) | 27 Ω at 25 mA - low impedance maintains regulation stability during current ripple |
| Max Regulator Current (IZM) | 230 mA - sets absolute DC current limit before thermal runaway at rated power |
| Surge Current (IZSM) | 230 A (8.3 ms half-sine) - withstands transient overvoltages without degradation |
| Reverse Leakage (IR) | 0.5 µA at 40.8 V - negligible standby loss in high-impedance bias networks |
| Junction Temp Range | –65 to +150 °C - supports operation in automotive under-hood and industrial control environments |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band; banded end must be held positive relative to anode for proper Zener 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) | Reverse-biased terminal | Connected to regulated node or voltage reference point; polarity critical for breakdown conduction |
| Anode (unbanded end) | Reference/ground terminal | Typically tied to system ground or lower-potential rail; forms return path for Zener current |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5369B equivalent | Identical electrical characteristics and testing to through-hole 1N5369B - enables drop-in redesign migration |
| RoHS-compliant matte-tin plating | Meets IPC/JEDEC J-STD-020B Level 1 moisture classification - eliminates dry-pack requirement and simplifies handling |
| Gull-wing lead form | Enables visual solder joint inspection and reliable reflow yield on standard SMT lines |
| High surge capability | 230 A non-repetitive surge rating (8.3 ms) - protects downstream circuitry from lightning-induced or inductive-switching transients |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback or forward converter feedback loop using optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Precision voltage reference providing stable 51 V threshold for error signal generation. Use Value: ±2% tolerance and 27 Ω dynamic impedance minimize output voltage drift across line/load/temperature variations. |
Use Scenario: Clamps transient overvoltage on 48 V DC bus in industrial motor drive front-end. IC Role / Device Role / Timing Role: Fast-acting shunt protector diverting surge energy before MOSFET gate oxide failure. Use Value: 230 A surge rating and 51 V clamping threshold protect 60 V-rated power stages without crowbar delay. |
| Programmable Voltage Reference | DC Link Monitoring Divider |
Use Scenario: Sets accurate reference for DAC-based programmable power supply setpoint control. IC Role / Device Role / Timing Role: Stable 51 V Zener referenced to ground, scaled via resistor divider for sub-5 V ADC input. Use Value: Low 0.5 µA leakage at 40.8 V ensures minimal error contribution in high-impedance divider networks. |
Use Scenario: Scales 300 V DC link voltage to safe range for microcontroller ADC sampling. IC Role / Device Role / Timing Role: High-voltage Zener stabilizes top of resistive divider against supply ripple and noise. Use Value: 150 °C max junction temperature allows placement near heatsinks without thermal derating penalties. |
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 | Through-hole DO-41 package; identical VZ, IZT, ZZT, and PD specs; same ±2% tolerance. | Requires axial-leaded PCB footprint and wave soldering; not suitable for high-density SMT layouts. | Select when legacy through-hole assembly or manual prototyping is preferred over automated SMT placement. |
| SMBJ5369C | Same DO-214AA (J-bend) package; identical electrical specs but different mechanical form factor and thermal resistance (RθJA = 100 °C/W vs. 90 °C/W). | Lower thermal performance on FR4 board; may require larger copper area for equivalent power handling. | Select when existing DO-214AA footprint reuse is prioritized over optimal thermal efficiency. |
Compared with SMBG5369C/TR13, 1N5369B offers identical regulation performance in through-hole format but sacrifices SMT manufacturability, while SMBJ5369C retains surface-mount compatibility at the cost of higher thermal resistance-making SMBG5369C/TR13 optimal for space-constrained, thermally demanding 5 W regulation.
Availability
SMBG5369C/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, telecom rectifiers, and automotive body control modules requiring stable component supply, RoHS compliance, and high-surge Zener protection.
Supply support for SMBG5369C/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 SMBG53xx series was designed specifically for surface-mount voltage regulation and transient suppression in high-density power systems where JEDEC-compatibility, thermal robustness, and visible solder joints are mandatory.
FAQ
What is the Zener voltage tolerance and test current for SMBG5369C/TR13?
The SMBG5369C/TR13 has a nominal Zener voltage of 51 V with ±2% tolerance (denoted by the "C" suffix) and is specified at a test current (IZT) of 25 mA. This tight tolerance ensures consistent regulation accuracy across production lots, and the 25 mA test point reflects typical operating conditions for stable dynamic impedance measurement in feedback and clamp applications.
Is SMBG5369C/TR13 RoHS compliant?
Yes, SMBG5369C/TR13 uses RoHS-compliant annealed matte-tin plating per MIL-STD-750, method 2026, and carries the "e3" marking designation. Its moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1, meaning no dry-pack requirement is needed prior to reflow soldering-reducing handling complexity and shelf-life constraints.
What is the maximum surge current rating for SMBG5369C/TR13?
The SMBG5369C/TR13 is rated for a non-repetitive peak surge current (IZSM) of 230 A with an 8.3 ms half-sine waveform. This rating is validated per Microsemi's test methodology and enables reliable protection against common-mode transients in 48 V and 60 V industrial power rails without degradation under single-event stress.
How does thermal resistance affect SMBG5369C/TR13 power handling on a PCB?
SMBG5369C/TR13 has RθJA = 90 °C/W on FR4 with 1 oz Cu and recommended pad layout. At ambient 25 °C, full 5 W dissipation raises junction temperature to 25 + (5 × 90) = 475 °C-exceeding its 150 °C limit. Therefore, actual usable power must follow the derating curve: e.g., only ~1.38 W is sustainable at TA = 25 °C unless heatsinking improves RθJA.
Can SMBG5369C/TR13 replace 1N5369B in existing designs?
Yes, SMBG5369C/TR13 is electrically identical to 1N5369B per Microsemi documentation and serves as a surface-mount drop-in replacement for the through-hole 1N5369B in new designs. However, mechanical redesign is required due to DO-215AA vs. DO-41 footprints-no PCB changes are needed only if migrating from SMBJ5369C or other DO-215AA variants.
SMBG5369C/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)
SMBG5369C/TR13 FAQ
1.How can I place an order for SMBG5369C/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5369C/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 SMBG5369C/TR13 reliable?
The price and inventory of SMBG5369C/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5369C/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5369C/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5369C/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5369C/TR13?
SMBG5369C/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5369C/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 SMBG5369C/TR13?
For technical support, including SMBG5369C/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5369C/TR13 requirements.
6.How does Aetrix verify that SMBG5369C/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5369C/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 SMBG5369C/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5369C/TR13?
All SMBG5369C/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5369C/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 SMBG5369C/TR13 part is unused and in its original packaging.
Return procedure for SMBG5369C/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5369C/TR13 Tags
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MM5Z5V1ST1G
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