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Microchip Technology SMBG5357CE3/TR13
- Part No.:
- SMBG5357CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5357CE3/TR13.pdf
- Description:
- DIODE ZENER 20V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,570
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Product details
Overview
SMBG5357CE3/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 20 V, ±2% tolerance (C suffix), RoHS-compliant matte-tin plating, and DO-215AA gull-wing package. It regulates voltage across broad current and temperature ranges in power supply reference and overvoltage protection circuits.
For engineers reviewing the SMBG5357CE3/TR13 datasheet, SMBG5357CE3/TR13 pinout, SMBG5357CE3/TR13 application, or SMBG5357CE3/TR13 equivalent, key selection criteria include Zener voltage accuracy, surge current capability (5.1 A), thermal resistance (25 °C/W junction-to-lead), and moisture sensitivity level (MSL Level 1).
Technical Context
This device operates in reverse-biased breakdown mode to maintain stable voltage under varying load and temperature conditions. Its dynamic impedance is 3.0 Ω at 65 mA test current, and it exhibits minimal voltage drift versus current due to low knee impedance (237 Ω at 1.0 mA).
The SMBG5357CE3/TR13 is rated for 5.0 W power dissipation at lead temperature <25 °C, with thermal resistance junction-to-lead of 25 °C/W and junction-to-ambient of 90 °C/W on FR4 board. It withstands non-repetitive 8.3 ms half-sine surge currents up to 5.1 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20 V ±2% at 65 mA - ensures precise voltage reference within tight tolerance for feedback loops. |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - supports high-energy clamping without heatsink when lead-temperature controlled. |
| Max Regulator Current (IZM) | 65 mA - defines maximum continuous DC current before thermal derating begins. |
| Dynamic Impedance (ZZT) | 3.0 Ω at IZT = 65 mA - enables low AC ripple rejection in regulation applications. |
| Surge Current (IZSM) | 5.1 A (8.3 ms half-sine) - provides robust transient overvoltage suppression in industrial power rails. |
| Junction Temperature Range | –65 to +150 °C - suitable for extended-temperature automotive and industrial environments. |
| Moisture Sensitivity Level | MSL Level 1 - eliminates dry-pack requirement and simplifies SMT assembly logistics. |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band; banded end is positive during operation. Terminals are solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common; establishes reference potential for Zener biasing. |
| Cathode | Regulated output node | Banded terminal; supplies stabilized 20 V to load or feedback network when reverse-biased. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5357B equivalent | Identical electrical characteristics and testing to legacy through-hole 1N5357B - enables drop-in replacement in upgraded designs. |
| Gull-wing lead form | Visible solder joints on DO-215AA footprint - supports automated optical inspection (AOI) and rework accessibility. |
| RoHS-compliant finish | Matte-tin plating (e3 suffix) - meets environmental compliance without sacrificing solderability or reliability. |
| High surge endurance | 5.1 A non-repetitive surge rating - protects downstream circuitry from lightning-induced or switching transients. |
| Low dynamic impedance | 3.0 Ω at 65 mA - minimizes output voltage variation under dynamic load changes in precision references. |
Applications
| Switch-Mode Power Supply Feedback | Industrial Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing error amplifier reference in isolated flyback converter feedback loop. IC Role / Device Role / Timing Role: Precision 20 V Zener reference providing stable bias for optocoupler-driven TL431-like control path. Use Value: ±2% tolerance and 3.0 Ω dynamic impedance ensure <±0.5% output voltage regulation across line/load/temperature. | Use Scenario: Clamping 24 V DC bus against ESD and inductive kickback in PLC I/O modules. IC Role / Device Role / Timing Role: Transient voltage suppressor placed across rail and ground to limit peak excursion to 20 V. Use Value: 5.1 A surge rating and 150 °C max junction temperature enable reliable protection in harsh factory-floor environments. |
| Automotive Battery Monitor Reference | Test Equipment Voltage Calibration |
Use Scenario: Providing stable reference for ADC-based 12 V battery voltage sensing in engine control units. IC Role / Device Role / Timing Role: Low-drift Zener reference feeding precision resistor divider into microcontroller ADC input. Use Value: MSL Level 1 and –65 to +150 °C operation support unbuffered placement near high-temp engine compartments. | Use Scenario: Calibrating benchtop multimeter front-end voltage ranges requiring traceable 20 V reference. IC Role / Device Role / Timing Role: Primary voltage standard in metrology-grade calibration fixture with minimal self-heating. Use Value: 5.0 W power rating allows sustained 65 mA operation with <0.1% long-term drift under controlled thermal conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5357B | Axial-leaded T-18 package; identical VZ, tolerance, and electrical specs but higher RθJA (120 °C/W). | Requires through-hole assembly; unsuitable for high-density PCBs or automated SMT lines. | Select when legacy board reuse or manual prototyping is prioritized over space and automation. |
| SMBJ5357B | DO-214AA J-bend package; same VZ and power rating but 35 °C/W RθJA and no RoHS e3 option. | Lower profile than SMBG but less visible solder joint; incompatible footprint with DO-215AA. | Select when existing DO-214AA layout exists and RoHS compliance is not required. |
Compared with SMBG5357CE3/TR13, 1N5357B requires through-hole mounting and offers inferior thermal performance, while SMBJ5357B lacks RoHS compliance and uses a different footprint - making SMBG5357CE3/TR13 optimal for new SMT designs demanding regulatory compliance and manufacturability.
Availability
SMBG5357CE3/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial overvoltage clamps, and automotive battery monitors requiring stable component supply with full traceability and lifecycle management.
Supply support for SMBG5357CE3/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 space-constrained, high-reliability power systems where JEDEC compatibility and MSL Level 1 handling are critical.
FAQ
What is the Zener voltage tolerance of SMBG5357CE3/TR13?
The SMBG5357CE3/TR13 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number. This means its measured VZ falls between 19.6 V and 20.4 V at 65 mA test current and 25 °C ambient, enabling high-accuracy voltage referencing in feedback networks and calibration circuits.
Does SMBG5357CE3/TR13 require dry packing before SMT assembly?
No, SMBG5357CE3/TR13 does not require dry packing. It carries IPC/JEDEC J-STD-020B Moisture Sensitivity Level (MSL) Level 1 classification, meaning it can be stored indefinitely at ≤30 °C/60% RH without baking or humidity-controlled packaging prior to reflow soldering.
What is the maximum surge current rating for SMBG5357CE3/TR13?
The SMBG5357CE3/TR13 is rated for a non-repetitive peak surge current (IZSM) of 5.1 A, specified for an 8.3 ms half-sine waveform. This rating supports robust protection against transient overvoltages in industrial control and automotive power distribution systems.
How does the thermal resistance of SMBG5357CE3/TR13 compare between junction-to-lead and junction-to-ambient?
SMBG5357CE3/TR13 has RθJL = 25 °C/W and RθJA = 90 °C/W on FR4 board. The lower junction-to-lead value indicates efficient heat transfer to PCB copper traces via leads, while the higher junction-to-ambient reflects dependence on board layout - underscoring the need for adequate copper pour for 5 W operation.
Is SMBG5357CE3/TR13 compatible with the legacy 1N5357B diode?
Yes, SMBG5357CE3/TR13 is electrically and functionally equivalent to 1N5357B per Microsemi documentation, sharing identical Zener voltage, tolerance, dynamic impedance, and surge ratings. However, it uses DO-215AA surface-mount packaging instead of axial T-18, requiring PCB footprint redesign.
SMBG5357CE3/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):
- 20 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 3 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 14.4 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)
SMBG5357CE3/TR13 FAQ
1.How can I place an order for SMBG5357CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5357CE3/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 SMBG5357CE3/TR13 reliable?
The price and inventory of SMBG5357CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5357CE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5357CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5357CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5357CE3/TR13?
SMBG5357CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5357CE3/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 SMBG5357CE3/TR13?
For technical support, including SMBG5357CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5357CE3/TR13 requirements.
6.How does Aetrix verify that SMBG5357CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5357CE3/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 SMBG5357CE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5357CE3/TR13?
All SMBG5357CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5357CE3/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 SMBG5357CE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5357CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5357CE3/TR13 Tags
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