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Microchip Technology SMBG5369B/TR13
- Part No.:
- SMBG5369B/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5369B/TR13.pdf
- Description:
- DIODE ZENER 51V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,013
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Product details
Overview
SMBG5369B/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 51 V, ±5% tolerance (B suffix), 25 mA test current (IZT), 27 Ω dynamic impedance (ZZT), and maximum regulator current of 230 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 SMBG5369B/TR13 datasheet, SMBG5369B/TR13 pinout, SMBG5369B/TR13 application, or SMBG5369B/TR13 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (RθJL = 25 °C/W), surge current rating (IZSM = 2.5 A), and RoHS-compliant matte-tin plating compatibility with lead-free reflow.
Technical Context
This device functions as a two-terminal voltage reference diode operating in reverse breakdown, delivering stable 51 V regulation across 10–230 mA operating current range. Its low dynamic impedance (27 Ω at 25 mA) ensures minimal voltage variation under load transients.
The DO-215AA gull-wing package provides visible solder joints and meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity, eliminating dry-pack requirements. Thermal performance is defined by RθJL = 25 °C/W (junction-to-lead) and RθJA = 90 °C/W (junction-to-ambient on FR4).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 51 V ±5% at IZT = 25 mA - defines precise regulation point for feedback networks |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - supports high-energy clamping without heatsink under controlled lead temp |
| Dynamic Impedance (ZZT) | 27 Ω at IZT = 25 mA - limits output voltage deviation during current changes in regulation loop |
| Max Regulator Current (IZM) | 230 mA - sets upper DC current limit before thermal runaway at rated power |
| Surge Current (IZSM) | 2.5 A (8.3 ms half-sine) - withstands transient overvoltage events like ESD or load dump |
| Reverse Leakage (IR) | 0.5 µA at VR = 38.8 V - ensures negligible standby current in high-impedance bias networks |
| Junction Temp Range | –65 to +150 °C - enables operation in automotive under-hood and industrial ambient environments |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band; anode and cathode terminals only. Designed for visible solder joint inspection and compatible with standard SMT reflow profiles (260 °C peak, 10 s).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node in Zener shunt configuration | Connected to system ground or lower-potential rail; forms return path for regulation current |
| Cathode | Regulated output node | Banded end; connected to voltage node requiring stabilization (e.g., feedback divider tap) |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5369B equivalent | Identical electrical specs and test methods - enables drop-in replacement in legacy designs |
| RoHS-compliant matte-tin plating | Meets MIL-STD-750 Method 2026 solderability - ensures reliable lead-free reflow joint formation |
| Level 1 moisture sensitivity | No dry pack required - reduces handling cost and simplifies inventory management |
| Gull-wing lead form | Visible solder fillet inspection - supports automated optical inspection (AOI) in high-reliability lines |
| High surge current capability | 2.5 A non-repetitive peak - protects downstream circuitry from 8.3 ms line transients per IEC 61000-4-5 |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Clamp Circuit |
|---|---|
Use Scenario: Stabilizes error amplifier reference in isolated flyback converter secondary-side feedback loop. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 51 V threshold for optocoupler bias network. Use Value: Maintains ±1% output regulation across 10–100% load with <27 Ω dynamic impedance limiting feedback error. |
Use Scenario: Limits voltage spike on 48 V telecom line during lightning-induced surges. IC Role / Device Role / Timing Role: Passive clamp element diverting excess energy to ground when line exceeds 51 V. Use Value: Absorbs 2.5 A surge (8.3 ms) without degradation, protecting downstream DC-DC converters. |
| Industrial Sensor Excitation | Programmable Logic Controller Input Protection |
Use Scenario: Supplies stable excitation voltage to 350 Ω strain gauge bridge in factory-floor weighing system. IC Role / Device Role / Timing Role: Precision voltage source maintaining constant bridge bias despite supply ripple. Use Value: Enables 0.1% measurement accuracy via 51 V ±5% regulation and low IR leakage (<0.5 µA). |
Use Scenario: Protects 24 V digital input channel from field-wiring faults and induced transients. IC Role / Device Role / Timing Role: First-line transient suppressor clamping input to safe level before Schmitt trigger. Use Value: Prevents false triggering with 27 Ω impedance ensuring fast response to >51 V events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5369B | Same electrical specs, axial T-18 package (lead length 0.375", diameter 0.185") | Requires through-hole assembly and board space; no AOI-compatible gull-wing leads | Select for legacy through-hole designs or prototyping where manual soldering is acceptable |
| SMBJ5369B | Identical Zener parameters but DO-214AA J-bend package (smaller footprint, higher RθJA = 100 °C/W) | Limited thermal margin in high-power-density layouts due to reduced heat conduction path | Select when board area is constrained and peak power is below 3.5 W with adequate copper pour |
Compared with SMBG5369B/TR13, 1N5369B requires PCB redesign for through-hole mounting, while SMBJ5369B trades thermal performance for smaller footprint - SMBG5369B/TR13 uniquely balances visible solder joints, JEDEC compliance, and 25 °C/W junction-to-lead thermal resistance.
Availability
SMBG5369B/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor interfaces, telecom line protection, and programmable logic controller input conditioning requiring stable component supply and RoHS-compliant manufacturing.
Supply support for SMBG5369B/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 SMBG53xxB series was designed specifically for surface-mount voltage regulation in high-density power systems where visible solder joints, JEDEC compatibility, and robust surge handling are mandatory.
FAQ
What is the Zener voltage tolerance for SMBG5369B/TR13?
The "B" suffix in SMBG5369B/TR13 specifies a ±5% Zener voltage tolerance, meaning the measured VZ at 25 mA test current falls between 48.45 V and 53.55 V. This tolerance is verified per JEDEC test methods and applies across the full operating temperature range of –65 °C to +150 °C.
Can SMBG5369B/TR13 be used in lead-free reflow processes?
Yes, SMBG5369B/TR13 features RoHS-compliant matte-tin plating and is qualified for lead-free reflow with a peak temperature of 260 °C for 10 seconds. Its DO-215AA package meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity, eliminating dry-pack requirements prior to assembly.
What is the maximum continuous current SMBG5369B/TR13 can handle?
SMBG5369B/TR13 has a maximum regulator current (IZM) of 230 mA at TL < 25 °C. At higher lead temperatures, derating applies per the power derating curve: for example, at TL = 75 °C, maximum IZM drops to approximately 150 mA to maintain 5 W dissipation within thermal limits.
How does SMBG5369B/TR13 compare to SMBJ5369B in thermal performance?
SMBG5369B/TR13 has RθJL = 25 °C/W, significantly better than SMBJ5369B's RθJL = 35 °C/W due to its gull-wing lead geometry enhancing heat conduction to PCB pads. This allows SMBG5369B/TR13 to sustain higher continuous power in thermally constrained layouts without additional copper pour.
Is SMBG5369B/TR13 suitable for overvoltage protection in 48 V systems?
Yes, SMBG5369B/TR13 is commonly deployed as a clamping device in 48 V telecom and industrial systems. With a 51 V Zener voltage and 2.5 A surge rating (8.3 ms half-sine), it reliably limits transients above 51 V while maintaining low leakage (<0.5 µA) during normal operation at 48 V.
SMBG5369B/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:
- ±5%
- 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)
SMBG5369B/TR13 FAQ
1.How can I place an order for SMBG5369B/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5369B/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 SMBG5369B/TR13 reliable?
The price and inventory of SMBG5369B/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5369B/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5369B/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5369B/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5369B/TR13?
SMBG5369B/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5369B/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 SMBG5369B/TR13?
For technical support, including SMBG5369B/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5369B/TR13 requirements.
6.How does Aetrix verify that SMBG5369B/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5369B/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 SMBG5369B/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5369B/TR13?
All SMBG5369B/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5369B/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 SMBG5369B/TR13 part is unused and in its original packaging.
Return procedure for SMBG5369B/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5369B/TR13 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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