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Microchip Technology SMBG5357C/TR13
- Part No.:
- SMBG5357C/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5357C/TR13.pdf
- Description:
- DIODE ZENER 20V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,011
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Product details
Overview
SMBG5357C/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 20 V, ±2% tolerance (C suffix), 3.0 Ω dynamic impedance at 65 mA test current, and 75 mA maximum regulator current. It operates across –65 °C to +150 °C junction temperature and is used for precision voltage regulation in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the SMBG5357C/TR13 datasheet, SMBG5357C/TR13 pinout, SMBG5357C/TR13 application, or SMBG5357C/TR13 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (25 °C/W junction-to-lead), surge current capability (5.1 A), moisture sensitivity level (MSL 1), and gull-wing DO-215AA package compatibility with automated SMT assembly.
Technical Context
This device functions as a two-terminal voltage reference operating in reverse breakdown, maintaining stable output voltage under varying load and temperature conditions. Its low dynamic impedance (3.0 Ω) ensures minimal voltage deviation across regulated current range (1–75 mA), and its MSL 1 rating eliminates dry-pack requirements for storage and handling.
The DO-215AA gull-wing package provides visible solder joints for optical inspection and supports 5 W power dissipation at lead temperature ≤25 °C, with thermal resistance junction-to-ambient rated at 90 °C/W on FR4 board using recommended footprint. Cathode polarity is marked by a band; operation requires cathode biasing positive relative to anode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20 V ±2% at 65 mA - defines precise regulation point for feedback networks |
| Power Dissipation (PD) | 5.0 W at TL ≤25 °C - enables robust transient energy absorption without derating |
| Dynamic Impedance (ZZT) | 3.0 Ω at IZT = 65 mA - ensures <150 mV voltage shift over 10–75 mA load variation |
| Max Regulator Current (IZM) | 75 mA - sets upper limit for continuous DC regulation without thermal runaway |
| Junction Temperature Range | –65 °C to +150 °C - supports operation in automotive under-hood and industrial control environments |
| Thermal Resistance (RθJL) | 25 °C/W - allows direct thermal coupling to PCB copper for efficient heat transfer |
| Surge Current (IZSM) | 5.1 A (8.3 ms half-sine) - withstands common AC line transients and ESD events |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band; anode and cathode terminals are formed as symmetrical gull-wing leads for reflow-compatible mounting on FR4 PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lower-potential rail; forms return path for Zener current |
| Cathode | Regulated output node | Banded end; connected to feedback point or protected circuit node; maintains 20 V reference |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5357B equivalent | Identical electrical specs and test methods to legacy through-hole 1N5357B, enabling drop-in redesign |
| RoHS-compliant matte-tin plating | Meets IPC/JEDEC J-STD-020B MSL 1 - no dry pack required, simplifies inventory and assembly logistics |
| Gull-wing lead geometry | Enables visual solder joint inspection and high-yield reflow processing on standard SMT lines |
| Low leakage at VR = 14.4 V | IR ≤ 0.5 µA - minimizes quiescent current loss in battery-powered or low-power standby circuits |
| High surge current rating | 5.1 A non-repetitive peak - protects downstream ICs from IEC 61000-4-5 Level 3 surges without external clamping |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback converter feedback loop via optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Precision 20 V reference establishing stable feedback threshold for TL431 or similar shunt regulator. Use Value: ±2% tolerance and 3.0 Ω dynamic impedance maintain <±0.5% output voltage drift across line/load/temperature. |
Use Scenario: Provides stable excitation voltage for bridge-based pressure transducers in factory automation systems. IC Role / Device Role / Timing Role: Low-drift 20 V bias source replacing higher-cost voltage references in analog front-end stages. Use Value: MSL 1 rating and –65 °C to +150 °C operation ensure reliability in uncontrolled ambient sensor enclosures. |
| Overvoltage Protection Clamp | Programmable Logic Controller Input Protection |
Use Scenario: Clamps 24 V DC input rail during load dump or inductive kick events in automotive ECUs. IC Role / Device Role / Timing Role: Fast-acting shunt limiter diverting surge energy away from microcontroller I/O pins. Use Value: 5.1 A surge rating and 25 °C/W RθJL allow single-device protection without heatsink or series impedance. |
Use Scenario: Protects 24 V digital input channels in PLC modules against field-wiring faults and ESD. IC Role / Device Role / Timing Role: Primary clamp element placed before TVS diode and series resistor in input protection network. Use Value: Low IR (≤0.5 µA) prevents false triggering; gull-wing leads support automated optical inspection post-assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5357B | Through-hole DO-41 package; identical VZ, IZM, and ZZT; no MSL rating | Requires manual or wave-solder assembly; unsuitable for high-density SMT layouts | Select when legacy through-hole design must be maintained or thermal mass of axial lead improves surge handling |
| SMBJ5357B | J-bend DO-214AA package; same VZ and tolerance but higher ZZT (5.0 Ω); RθJA = 100 °C/W | Lower thermal performance on FR4; less suitable for sustained 5 W operation without copper pour | Select when existing DO-214AA footprint is fixed and moderate regulation stability suffices |
Compared with SMBG5357C/TR13, 1N5357B offers identical regulation but lacks SMT compatibility and MSL 1 assurance, while SMBJ5357B trades off thermal efficiency and impedance for footprint reuse-making SMBG5357C/TR13 optimal for new high-density, thermally constrained designs requiring precision and manufacturability.
Availability
SMBG5357C/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor interfaces, overvoltage protection circuits, and programmable logic controller input stages requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBG5357C/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 in space-constrained, thermally demanding applications where JEDEC-compatibility, MSL 1 handling, and gull-wing process compatibility are critical.
FAQ
What is the Zener voltage tolerance of SMBG5357C/TR13?
The "C" suffix in SMBG5357C/TR13 specifies a ±2% Zener voltage tolerance at 65 mA test current, yielding a guaranteed VZ range of 19.6 V to 20.4 V. This tighter tolerance supports high-accuracy feedback loops in regulated power supplies and precision reference applications where ±5% devices would introduce unacceptable output variation.
Does SMBG5357C/TR13 require dry packing before SMT assembly?
No, SMBG5357C/TR13 has a moisture sensitivity level (MSL) of 1 per IPC/JEDEC J-STD-020B, meaning it may be stored indefinitely at ambient conditions without dry pack or baking. This eliminates moisture-related popcorning risk during reflow and simplifies inventory handling compared to MSL 3+ components.
What is the maximum continuous current SMBG5357C/TR13 can regulate?
SMBG5357C/TR13 supports a maximum continuous regulator current (IZM) of 75 mA at lead temperature ≤25 °C. At higher ambient temperatures, derating applies per the power derating curve in Figure 1; for example, at TA = 70 °C on FR4, usable IZM drops to approximately 42 mA to maintain safe junction temperature.
How does the DO-215AA package of SMBG5357C/TR13 differ from DO-214AA?
The DO-215AA gull-wing package of SMBG5357C/TR13 features symmetrical, outward-bent leads enabling visual solder joint inspection and superior coplanarity control versus the J-bend leads of DO-214AA (used in SMBJ5357B). This improves first-pass yield in fine-pitch SMT processes and enhances thermal conduction via shorter lead paths to PCB copper.
Can SMBG5357C/TR13 replace 1N5357B in existing designs?
Yes, SMBG5357C/TR13 is electrically equivalent to 1N5357B per Microsemi documentation, matching VZ, IZM, ZZT, and surge ratings. However, the DO-215AA surface-mount package requires PCB footprint revision; it is not a drop-in replacement unless the layout accommodates gull-wing geometry and thermal relief patterns.
SMBG5357C/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)
SMBG5357C/TR13 FAQ
1.How can I place an order for SMBG5357C/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5357C/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 SMBG5357C/TR13 reliable?
The price and inventory of SMBG5357C/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5357C/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5357C/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5357C/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5357C/TR13?
SMBG5357C/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5357C/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 SMBG5357C/TR13?
For technical support, including SMBG5357C/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5357C/TR13 requirements.
6.How does Aetrix verify that SMBG5357C/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5357C/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 SMBG5357C/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5357C/TR13?
All SMBG5357C/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5357C/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 SMBG5357C/TR13 part is unused and in its original packaging.
Return procedure for SMBG5357C/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5357C/TR13 Tags
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