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Microchip Technology SMBG5369BE3/TR13
- Part No.:
- SMBG5369BE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5369BE3/TR13.pdf
- Description:
- DIODE ZENER 51V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,014
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Product details
Overview
SMBG5369BE3/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 51 V, ±5% tolerance (B suffix), RoHS-compliant matte-tin plating (e3), and DO-215AA gull-wing package. It regulates voltage across wide current and temperature ranges and is used in overvoltage protection circuits for industrial power supplies.
For engineers reviewing the SMBG5369BE3/TR13 datasheet, SMBG5369BE3/TR13 pinout, SMBG5369BE3/TR13 application, or SMBG5369BE3/TR13 equivalent, key selection criteria include Zener voltage accuracy, surge current capability (230 A), thermal resistance (90 °C/W on FR4), and JEDEC 1N5369B compatibility.
Technical Context
This device operates in reverse-biased breakdown mode to maintain stable voltage under varying load and temperature conditions. Its dynamic impedance is 27 Ω at 25 mA test current, and it exhibits minimal voltage drift versus current due to low Zener knee impedance (93 Ω at 1 mA).
The SMBG5369BE3/TR13 is rated for 5.0 W at lead temperature < 25 °C, derating linearly above that point per the published curve. It withstands non-repetitive 8.3 ms half-sine surge currents up to 230 A and meets MIL-STD-750 ESD immunity requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 51 V ±5% at 25 mA - defines precise clamping threshold for overvoltage protection |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - requires thermal management on PCB for sustained operation |
| Max Surge Current (IZSM) | 230 A (8.3 ms half-sine) - handles transient energy without failure in surge-prone systems |
| Dynamic Impedance (ZZT) | 27 Ω at IZT = 25 mA - ensures tight regulation under moderate load variation |
| Reverse Leakage (IR) | 0.5 µA at 40.3 V - negligible standby current in high-impedance bias networks |
| Thermal Resistance (RθJA) | 90 °C/W on FR4 (1 oz Cu) - dictates minimum copper area needed for thermal compliance |
| Junction Temp Range | –65 to +150 °C - supports operation in extended industrial and automotive environments |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band; terminals are anode and cathode only. Designed for visible solder joints and compatible with standard reflow profiles (260 °C peak for 10 s).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference node for reverse-bias operation | Connected to lower-potential side of protected circuit; forms return path during clamping |
| Cathode | Zener voltage reference terminal | Banded end; connected to higher-potential rail; establishes regulated output voltage relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5369B equivalence | Identical electrical characteristics and testing - enables drop-in replacement in legacy designs |
| RoHS-compliant matte-tin plating | e3 suffix confirms lead-free finish meeting IPC/JEDEC J-STD-020B Level 1 moisture sensitivity - no dry pack required |
| Gull-wing lead form | DO-215AA package enables visual solder joint inspection and reliable reflow yield on automated assembly lines |
| High surge current rating | 230 A non-repetitive surge capability - protects downstream components against lightning-induced transients |
Applications
| Industrial Power Supply Protection | Automotive ECUs |
|---|---|
Use Scenario: Clamps input rail surges in 24 V DC industrial SMPS front-ends exposed to inductive switching noise. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to clamp transient voltages above 51 V. Use Value: Prevents damage to downstream regulators and microcontrollers by limiting overvoltage to ≤51.5 V (max) during 8.3 ms transients. | Use Scenario: Protects CAN transceiver supply rails in engine control units subjected to load-dump events. IC Role / Device Role / Timing Role: Standby shunt regulator absorbing energy during ISO 7637-2 Pulse 5a transients. Use Value: Maintains rail integrity below 56 V (110% of 51 V) during 400 ms load dump, avoiding brownout resets. |
| Telecom Line Card Protection | Test Equipment Reference |
Use Scenario: Guards analog signal paths in telecom line cards against accidental 48 V battery reversal or hot-swap spikes. IC Role / Device Role / Timing Role: Bidirectional clamping element (with series diode) limiting reverse polarity excursions. Use Value: Limits reverse voltage to ≤51.5 V while drawing <0.5 µA leakage at 40.3 V - preserves signal fidelity. | Use Scenario: Provides stable 51 V reference in precision calibration fixtures for multimeter and DMM verification. IC Role / Device Role / Timing Role: Low-drift Zener reference source with 27 Ω dynamic impedance for buffered output stages. Use Value: Delivers <±0.5% voltage stability over 10–100 mA operating range - meets ANSI C12.1 traceability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5369BRLG | Same 51 V ±5%, 5 W rating, but in axial DO-204AL (1N) package with Sn/Pb plating | Requires through-hole mounting and manual soldering; not suitable for high-density SMT lines | Select when legacy board repair or prototyping demands axial form factor and Pb-based solder compatibility |
| SMBJ5369B | Identical electrical specs but in DO-214AA (SMB) J-bend package; same RoHS e3 option available | Lower profile and different thermal path (RθJA = 85 °C/W vs. 90 °C/W); footprint incompatible with DO-215AA | Choose for space-constrained layouts where J-bend leads improve mechanical retention on thin PCBs |
Compared with SMBG5369BE3/TR13, 1N5369BRLG offers through-hole reliability but sacrifices SMT automation, while SMBJ5369B matches performance in a smaller footprint but requires PCB redesign due to differing pad layout and thermal behavior.
Availability
SMBG5369BE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive ECUs, and telecom line card protection requiring stable component supply and full RoHS compliance.
Supply support for SMBG5369BE3/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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The SMBG53xxB series was engineered specifically for surface-mount overvoltage protection in high-density power systems where JEDEC 1N53xxB compatibility and visible solder joints are critical.
FAQ
What is the Zener voltage tolerance of SMBG5369BE3/TR13?
The SMBG5369BE3/TR13 has a ±5% Zener voltage tolerance, indicated by the "B" suffix in its part number. This means its measured VZ falls between 48.45 V and 53.55 V at 25 mA test current and 25 °C ambient. The tolerance is verified per JEDEC test methods and applies across the full operating temperature range of –65 to +150 °C. SMBG5369BE3/TR13 maintains this specification without derating under standard reflow and operational conditions.
Does SMBG5369BE3/TR13 require dry packing before reflow soldering?
No, SMBG5369BE3/TR13 does not require dry packing prior to reflow soldering. Its moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1, meaning it can be stored indefinitely at ≤30 °C/60% RH without baking. The device uses void-free thermosetting epoxy encapsulation and RoHS-compliant matte-tin plating, both contributing to its robust moisture resistance. SMBG5369BE3/TR13 is qualified for standard lead-free reflow profiles up to 260 °C peak for 10 seconds.
How does SMBG5369BE3/TR13 compare to the legacy 1N5369B in terms of electrical performance?
SMBG5369BE3/TR13 is electrically identical to the axial-leaded 1N5369B per JEDEC registration - same VZ, IZT, ZZT, IR, and IZSM specifications. Both share ±5% tolerance, 25 mA test current, and 230 A surge rating. SMBG5369BE3/TR13 replicates all 1N5369B electrical behavior in surface-mount form, enabling direct functional replacement without circuit recalibration. SMBG5369BE3/TR13 adds gull-wing visibility and RoHS compliance via the e3 suffix.
What is the maximum continuous power dissipation for SMBG5369BE3/TR13 on a standard FR4 PCB?
On a standard FR4 PCB with 1 oz copper and recommended footprint, SMBG5369BE3/TR13 delivers 1.38 W continuous power dissipation at 25 °C ambient temperature. This value is derived from its RθJA = 90 °C/W rating and 150 °C max junction temperature. At higher ambient temperatures, power must be linearly derated per Figure 1 in the datasheet. SMBG5369BE3/TR13 achieves full 5.0 W only when lead temperature is maintained below 25 °C - typically requiring external heatsinking or forced convection.
Can SMBG5369BE3/TR13 be used in bidirectional transient protection configurations?
SMBG5369BE3/TR13 is a unidirectional Zener diode optimized for reverse-bias clamping. For bidirectional protection, it must be paired with a series diode or used in a back-to-back configuration with another SMBG5369BE3/TR13. Its cathode band marks the high-side terminal, and forward conduction begins at ~1.2 V. SMBG5369BE3/TR13 alone cannot suppress positive-going transients on its anode - that role requires complementary devices like TVS arrays or dedicated bidirectional suppressors.
SMBG5369BE3/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)
SMBG5369BE3/TR13 FAQ
1.How can I place an order for SMBG5369BE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5369BE3/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 SMBG5369BE3/TR13 reliable?
The price and inventory of SMBG5369BE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5369BE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5369BE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5369BE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5369BE3/TR13?
SMBG5369BE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5369BE3/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 SMBG5369BE3/TR13?
For technical support, including SMBG5369BE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5369BE3/TR13 requirements.
6.How does Aetrix verify that SMBG5369BE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5369BE3/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 SMBG5369BE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5369BE3/TR13?
All SMBG5369BE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5369BE3/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 SMBG5369BE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5369BE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5369BE3/TR13 Tags
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MM5Z5V1ST1G
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