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Microchip Technology SMBG5357BE3/TR13
- Part No.:
- SMBG5357BE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5357BE3/TR13.pdf
- Description:
- DIODE ZENER 20V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,654
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Product details
Overview
SMBG5357BE3/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 20 V, ±5% tolerance (B suffix), 3.0 Ω dynamic impedance at 65 mA test current, and DO-215AA gull-wing package. It regulates voltage across wide current and temperature ranges in power supply reference and overvoltage protection circuits.
For engineers reviewing the SMBG5357BE3/TR13 datasheet, SMBG5357BE3/TR13 pinout, SMBG5357BE3/TR13 application, or SMBG5357BE3/TR13 equivalent, key selection criteria include Zener voltage accuracy, surge current rating (5.1 A), thermal resistance (25 °C/W junction-to-lead), and RoHS-compliant matte-tin plating for lead-free assembly.
Technical Context
This device operates in reverse breakdown to maintain stable voltage under varying load and temperature conditions. Its 20 V Zener voltage is specified at 65 mA (IZT), with 3.0 Ω dynamic impedance (ZZT) and 0.5 µA maximum reverse leakage (IR) at 14.4 V (VR).
The DO-215AA gull-wing package provides visible solder joints and 25 °C/W junction-to-lead thermal resistance. It achieves 5.0 W power dissipation at TL < 25 °C and supports 5.1 A non-repetitive surge current (8.3 ms half-sine) per JEDEC JESD22-A112.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20 V ±5% at 65 mA - defines precise regulation point for feedback loops and reference rails |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - requires thermal management on PCB for sustained operation |
| Dynamic Impedance (ZZT) | 3.0 Ω at IZT = 65 mA - ensures low voltage variation under load transients |
| Max Surge Current (IZSM) | 5.1 A (8.3 ms half-sine) - withstands lightning-induced or switching-induced voltage spikes |
| Thermal Resistance (RθJL) | 25 °C/W - enables efficient heat transfer to PCB copper when mounted per recommended footprint |
| Reverse Leakage (IR) | 0.5 µA at VR = 14.4 V - minimizes standby power loss in high-impedance bias networks |
| Junction Temp Range | -65 to +150 °C - supports industrial and automotive under-hood environments |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode band marking; terminals are anode and cathode only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Regulated output node | Connected to positive side of regulated rail; voltage referenced to anode |
| Anode | Reference/ground node | Typically tied to system ground or lower-potential node in shunt regulator configuration |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5357B equivalent | Identical electrical specs and test methods - simplifies legacy design migration |
| RoHS-compliant matte-tin plating | Meets IPC-J-STD-020B Level 1 moisture sensitivity - no dry pack required before reflow |
| Gull-wing leads | Enables visual solder joint inspection and reliable reflow yield on FR4 boards |
| High surge current capability | 5.1 A peak (8.3 ms) - protects downstream circuitry from transient overvoltage events |
| Stable voltage vs. current | Low 3.0 Ω dynamic impedance - maintains regulation within ±0.2 V over 10–100 mA load range |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Shunt regulator in optocoupler feedback loop of isolated DC-DC converter. IC Role / Device Role / Timing Role: Zener reference for TL431 or similar error amplifier input. Use Value: 20 V Zener voltage sets precise output regulation threshold; 3.0 Ω impedance ensures minimal loop gain variation across line/load changes. | Use Scenario: Clamp placed across motor driver output to suppress inductive kickback. IC Role / Device Role / Timing Role: Transient voltage suppression element limiting voltage to 20 V during flyback events. Use Value: 5.1 A surge rating absorbs 100 mJ energy (½ × 20 V × 5.1 A × 8.3 ms), preventing MOSFET avalanche failure. |
| Industrial Sensor Signal Conditioning | Programmable Logic Controller Input Protection |
Use Scenario: Reference voltage source for 4–20 mA transmitter current loop calibration. IC Role / Device Role / Timing Role: Precision shunt reference providing stable 20 V excitation to sensor bridge. Use Value: ±5% tolerance and -65 to +150 °C operating range ensure calibration stability across factory floor temperatures. | Use Scenario: Input clamp on 24 V digital input channel of PLC module. IC Role / Device Role / Timing Role: Overvoltage limiter protecting microcontroller GPIO and level-shifter ICs. Use Value: 0.5 µA leakage at 14.4 V prevents false triggering; gull-wing package allows automated optical inspection post-reflow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5357B | Same Zener voltage (20 V), ±5%, but axial T-18 package; higher RθJA (125 °C/W) | Through-hole mounting only; unsuitable for high-density SMT layouts | Select when board space permits through-hole assembly and thermal constraints allow higher ambient rise |
| SMBJ5357B | Same electrical specs, but DO-214AA J-bend package; RθJL = 30 °C/W vs. 25 °C/W | Lower thermal performance; requires larger copper area for equivalent power handling | Choose if existing footprint uses DO-214AA; verify thermal derating using Figure 1 curve |
Compared with SMBG5357BE3/TR13, 1N5357B offers identical regulation but lacks SMT compatibility and thermal efficiency, while SMBJ5357B matches form factor but delivers 20% higher junction-to-lead thermal resistance-requiring tighter layout control for 5 W operation.
Availability
SMBG5357BE3/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor interfaces, and programmable logic controller input protection requiring stable component supply and RoHS-compliant manufacturing.
Supply support for SMBG5357BE3/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 targets surface-mount voltage regulation and transient suppression in space-constrained, thermally demanding applications where JEDEC-compatibility and RoHS compliance are mandatory.
FAQ
What is the Zener voltage tolerance of SMBG5357BE3/TR13?
The SMBG5357BE3/TR13 has a ±5% Zener voltage tolerance, indicated by the "B" suffix in its part number. This means its measured VZ at 65 mA test current falls between 19.0 V and 21.0 V at TL = 25 °C. The tolerance is guaranteed per JEDEC test methods and applies across the full -65 to +150 °C operating temperature range. SMBG5357BE3/TR13 meets this specification without requiring binning or post-manufacture screening.
Does SMBG5357BE3/TR13 require dry packing before reflow soldering?
No, SMBG5357BE3/TR13 does not require dry packing prior to reflow. 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 DO-215AA package uses void-free epoxy meeting UL94V-0 and RoHS-compliant matte-tin plating, both contributing to its robustness during standard Pb-free reflow profiles up to 260 °C for 10 seconds.
What is the maximum continuous power dissipation for SMBG5357BE3/TR13 on a standard FR4 board?
On a standard FR4 PCB with 1 oz copper and Microsemi's recommended footprint, SMBG5357BE3/TR13 delivers 1.38 W at TA = 25 °C. Full 5.0 W operation is only achievable when lead temperature (TL) is maintained below 25 °C-typically requiring direct thermal vias or external heatsinking. Derating follows the curve in Figure 1: power drops linearly to zero at 150 °C junction temperature.
How does the dynamic impedance of SMBG5357BE3/TR13 affect regulation accuracy?
The SMBG5357BE3/TR13 has a dynamic impedance (ZZT) of 3.0 Ω at 65 mA, meaning a 10 mA change in Zener current causes approximately 30 mV shift in output voltage. This low value ensures tight regulation in feedback networks and reference supplies. For example, in a 4–20 mA loop, SMBG5357BE3/TR13 maintains voltage stability within ±0.15 V across full current range-critical for precision sensor excitation.
Is SMBG5357BE3/TR13 compatible with lead-free reflow processes?
Yes, SMBG5357BE3/TR13 is fully compatible with lead-free reflow. Its matte-tin plating meets RoHS Directive 2011/65/EU and withstands peak temperatures up to 260 °C for 10 seconds per MIL-STD-202 method 2026. The "e3" suffix explicitly denotes RoHS compliance, and the device passes thermal shock testing per JESD22-A104. No special preheat or cooling profiles are needed beyond standard Pb-free reflow guidelines.
SMBG5357BE3/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:
- ±5%
- 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)
SMBG5357BE3/TR13 FAQ
1.How can I place an order for SMBG5357BE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5357BE3/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 SMBG5357BE3/TR13 reliable?
The price and inventory of SMBG5357BE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5357BE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5357BE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5357BE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5357BE3/TR13?
SMBG5357BE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5357BE3/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 SMBG5357BE3/TR13?
For technical support, including SMBG5357BE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5357BE3/TR13 requirements.
6.How does Aetrix verify that SMBG5357BE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5357BE3/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 SMBG5357BE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5357BE3/TR13?
All SMBG5357BE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5357BE3/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 SMBG5357BE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5357BE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5357BE3/TR13 Tags
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MM5Z5V1ST1G
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