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Microchip Technology SMBG5355BE3/TR13
- Part No.:
- SMBG5355BE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5355BE3/TR13.pdf
- Description:
- DIODE ZENER 18V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,256
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Product details
Overview
SMBG5355BE3/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal breakdown voltage of 18 V, ±5% tolerance (B suffix), RoHS-compliant matte-tin plating (e3), and DO-215AA gull-wing package. It regulates voltage across broad current and temperature ranges and is used in power supply overvoltage protection and reference circuits.
For engineers reviewing the SMBG5355BE3/TR13 datasheet, SMBG5355BE3/TR13 pinout, SMBG5355BE3/TR13 application, or SMBG5355BE3/TR13 equivalent, key selection criteria include Zener voltage accuracy, surge current capability (5.5 A), thermal resistance (25 °C/W junction-to-lead), and compatibility with high-density PCB layouts requiring visible solder joints.
Technical Context
This device operates as a precision voltage reference in reverse-biased mode, maintaining stable 18 V regulation at its specified test current of 65 mA. Its low dynamic impedance (2.5 Ω at IZT) and minimal voltage variation versus current ensure tight regulation under varying load conditions.
Designed for surface-mount assembly on FR4 boards with recommended footprint, it delivers 5.0 W dissipation at lead temperature <25 °C or 1.38 W at ambient 25 °C, with thermal resistance junction-to-lead of 25 °C/W and junction-to-ambient of 90 °C/W under defined mounting conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 18 V ±5% at 65 mA - defines precise clamping/reference level in protection or bias circuits |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - supports robust transient energy absorption with adequate heatsinking |
| Max Regulator Current (IZM) | 5.5 mA - sets maximum continuous DC current before thermal derating begins |
| Dynamic Impedance (ZZT) | 2.5 Ω at 65 mA - ensures minimal output voltage shift under dynamic load changes |
| Surge Current (IZSM) | 5.5 A (8.3 ms half-sine) - withstands common power-line transients without failure |
| Junction Temp Range | –65 to +150 °C - enables operation in automotive under-hood and industrial control environments |
| Thermal Resistance RθJL | 25 °C/W - allows accurate junction temperature estimation from measured lead temperature |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band; anode and cathode terminals are accessible via visible solder joints for optical inspection and rework.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node in Zener configuration | Connected to system ground or lower-potential rail; forms return path for regulation current |
| Cathode | Regulated output node | Banded end; connected to protected circuit node; maintains 18 V above anode when reverse-biased |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5355B Equivalent | Identical electrical characteristics and testing - enables drop-in replacement in legacy designs |
| RoHS Compliant Matte-Tin Plating | e3 suffix confirms lead-free finish compliant with IPC/JEDEC J-STD-020B Level 1 moisture sensitivity - no dry pack required |
| Gull-Wing Lead Geometry | DO-215AA package enables visual solder joint inspection and reliable reflow yield on fine-pitch layouts |
| High Surge Withstand | 5.5 A non-repetitive surge rating (8.3 ms half-sine) - protects downstream circuitry from ESD and line transients |
Applications
| Power Supply Overvoltage Clamp | DC Reference Voltage Source |
|---|---|
Use Scenario: Clamps input voltage to 18 V during AC line surges or regulator failure in 24 V industrial power supplies. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to shunt excess current and limit voltage excursion. Use Value: Prevents damage to downstream 18 V-rated logic or analog ICs by limiting peak voltage to 18.9 V (105% of nominal). | Use Scenario: Provides stable 18 V reference for ADC biasing or op-amp feedback networks in sensor signal conditioning. IC Role / Device Role / Timing Role: Precision voltage reference element with 2.5 Ω dynamic impedance minimizing load-induced drift. Use Value: Maintains reference stability within ±0.9 V over 10–100 mA operating current range, supporting 12-bit ADC accuracy. |
| ESD Protection for I/O Lines | Field-Programmable Gate Array (FPGA) Configuration Voltage Clamp |
Use Scenario: Protects 18 V auxiliary I/O rails in telecom equipment from contact ESD per IEC 61000-4-2. IC Role / Device Role / Timing Role: Transient voltage suppressor absorbing 8 kV contact discharge energy via controlled avalanche conduction. Use Value: Limits clamped voltage to ≤22 V during 8/20 µs transients, staying below FPGA I/O absolute maximum rating. | Use Scenario: Clamps configuration voltage rail (e.g., VCCINT backup) in Xilinx Spartan-7 FPGAs during brown-out events. IC Role / Device Role / Timing Role: Standby Zener clamp preventing undervoltage lockout during power sequencing anomalies. Use Value: Activates at 18 V to hold rail above 17.1 V minimum, ensuring reliable FPGA configuration retention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5355B | Same 18 V ±5%, 5 W rating, axial DO-204AL (T-18) package - higher RθJA (125 °C/W) | Through-hole mounting only; unsuitable for high-density SMT production | Select when legacy through-hole assembly or manual prototyping is required |
| SMBJ5355B | Same electrical specs but DO-214AA (J-bend) package - RθJA = 95 °C/W vs. 90 °C/W for SMBG | Lower profile than SMBG but less visible solder joint; different pad layout required | Select when board space constraints favor J-bend geometry and optical inspection is not mandatory |
Compared with SMBG5355BE3/TR13, 1N5355B requires through-hole assembly and offers inferior thermal performance, while SMBJ5355B matches electrical behavior but trades gull-wing visibility for slightly reduced thermal efficiency in ambient cooling.
Availability
SMBG5355BE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, sensor reference circuits, ESD protection networks, and FPGA configuration rail clamping requiring stable component supply and RoHS compliance.
Supply support for SMBG5355BE3/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 specifically for surface-mount voltage regulation and transient suppression in space-constrained, high-density power systems where visible solder joints and JEDEC compatibility are critical.
FAQ
What is the Zener voltage tolerance of SMBG5355BE3/TR13?
The SMBG5355BE3/TR13 has a ±5% Zener voltage tolerance, indicated by the "B" suffix in the part number. This means its breakdown voltage is guaranteed between 17.1 V and 18.9 V when tested at 65 mA and 25 °C. The e3 suffix confirms RoHS-compliant matte-tin plating, and TR13 denotes tape-and-reel packaging per EIA-481-1-A standard.
How does SMBG5355BE3/TR13 differ from the 1N5355B?
The SMBG5355BE3/TR13 is the surface-mount DO-215AA gull-wing equivalent of the through-hole 1N5355B (DO-204AL). Both share identical electrical characteristics including 18 V ±5% Zener voltage and 5 W power rating, but SMBG5355BE3/TR13 supports automated SMT assembly and offers lower thermal resistance junction-to-lead (25 °C/W vs. ~40 °C/W for axial).
What is the maximum surge current rating for SMBG5355BE3/TR13?
The SMBG5355BE3/TR13 has a maximum non-repetitive Zener surge current (IZSM) of 5.5 A for an 8.3 ms half-sine waveform. This rating enables reliable suppression of common power-line transients and ESD events without degradation, provided the device is mounted per the recommended FR4 footprint with 1 oz copper.
Is SMBG5355BE3/TR13 suitable for use as a voltage reference in precision analog circuits?
Yes - SMBG5355BE3/TR13 provides stable 18 V regulation with 2.5 Ω dynamic impedance at 65 mA, supporting precision applications such as ADC reference biasing. However, its ±5% initial tolerance and temperature coefficient require calibration or trimming in sub-1% accuracy systems; for tighter tolerance, consider C-suffix (±2%) variants like SMBG5355CE3/TR13.
What is the moisture sensitivity level (MSL) of SMBG5355BE3/TR13?
The SMBG5355BE3/TR13 has a moisture sensitivity level (MSL) of Level 1 per IPC/JEDEC J-STD-020B, meaning it is not humidity-sensitive and requires no dry pack or baking prior to reflow soldering. This simplifies handling and eliminates MSL-related process steps in high-volume SMT manufacturing.
SMBG5355BE3/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):
- 18 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 13 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)
SMBG5355BE3/TR13 FAQ
1.How can I place an order for SMBG5355BE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5355BE3/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 SMBG5355BE3/TR13 reliable?
The price and inventory of SMBG5355BE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5355BE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5355BE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5355BE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5355BE3/TR13?
SMBG5355BE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5355BE3/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 SMBG5355BE3/TR13?
For technical support, including SMBG5355BE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5355BE3/TR13 requirements.
6.How does Aetrix verify that SMBG5355BE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5355BE3/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 SMBG5355BE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5355BE3/TR13?
All SMBG5355BE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5355BE3/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 SMBG5355BE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5355BE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5355BE3/TR13 Tags
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MM5Z5V1ST1G
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