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Microchip Technology SMBG5357AE3/TR13
- Part No.:
- SMBG5357AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5357AE3/TR13.pdf
- Description:
- DIODE ZENER 20V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,750
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Product details
Overview
SMBG5357AE3/TR13 from Microsemi is a surface-mount 5 W Zener diode with a nominal breakdown voltage of 20 V, ±10% tolerance (A-suffix), rated for 65 mA test current (IZT), 237 Ω dynamic impedance (ZZT), and 75 mA maximum regulator current (IZM). It operates in the DO-215AA gull-wing package and is used for precision voltage regulation in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the SMBG5357AE3/TR13 datasheet, SMBG5357AE3/TR13 pinout, SMBG5357AE3/TR13 application, or SMBG5357AE3/TR13 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (RθJL = 25 °C/W), surge current rating (5.1 A IZSM), junction temperature range (–65 to +150 °C), and RoHS-compliant matte-tin plating.
Technical Context
This device functions as a two-terminal voltage reference operating in reverse-biased breakdown mode, with specified Zener voltage measured at 65 mA (IZT) and characterized by low dynamic impedance (237 Ω) near its knee region. Its thermal design relies on junction-to-lead conduction (RθJL = 25 °C/W), enabling stable regulation under pulsed or continuous DC loads when mounted per recommended FR4 footprint.
The SMBG5357AE3/TR13 exhibits minimal voltage drift versus current due to tight ±10% VZ tolerance and maintains regulation across –65 to +150 °C junction temperature. It withstands non-repetitive 8.3 ms half-sine surges up to 5.1 A (IZSM) and shows <0.5 µA reverse leakage (IR) at VR = 14.4 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20 V ±10% - Stable regulation point at 65 mA; high-end limit is 22 V for worst-case IZM calculation. |
| Test Current (IZT) | 65 mA - Operating point where VZ and ZZT are guaranteed; defines bias condition for feedback loop design. |
| Dynamic Impedance (ZZT) | 237 Ω - Small-signal AC impedance at 1 kHz; determines output voltage ripple rejection in regulation circuits. |
| Max Regulator Current (IZM) | 75 mA - Maximum continuous DC current at TL < 25 °C; sets upper bound for safe power dissipation (5 W). |
| Surge Current (IZSM) | 5.1 A - Non-repetitive 8.3 ms half-sine peak; enables transient overvoltage clamping without failure. |
| Junction Temp Range | –65 to +150 °C - Specifies full operational envelope; supports industrial and automotive under-hood environments. |
| Thermal Resistance J-to-L | 25 °C/W - Enables thermal modeling from lead temperature to junction; critical for PCB copper pour sizing. |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band; leads are tin-lead or RoHS-compliant matte-tin plated per MIL-STD-750 method 2026. Weight: 0.1 g. Moisture sensitivity level: IPC/JEDEC J-STD-020B Level 1 (no dry pack required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-bias reference terminal | Connected to lower-potential node (e.g., ground or return path); establishes reference polarity for regulation. |
| Cathode | Reverse-bias reference terminal | Banded end; connected to regulated voltage node (e.g., feedback divider tap); defines VZ directionality. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5357B equivalence | Fully compatible electrical specs and test methods with legacy through-hole 1N5357B; simplifies redesign migration. |
| RoHS-compliant matte-tin plating | e3 suffix confirms annealed matte-tin finish meeting RoHS Directive 2011/65/EU; eliminates Pb-based solder concerns. |
| Gull-wing lead form | DO-215AA geometry enables visual solder joint inspection and reliable reflow yield on standard SMT lines. |
| Level 1 moisture sensitivity | No dry pack or baking required before assembly; reduces handling cost and avoids moisture-induced popcorning. |
| High surge current capability | 5.1 A IZSM rating supports robust transient suppression in DC power rails without derating or external TVS. |
Applications
| Power Supply Feedback Regulation | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Stabilizing output voltage in isolated flyback or forward converter feedback networks using optocoupler-coupled error amplifiers. IC Role / Device Role / Timing Role: Two-terminal voltage reference establishing precise 20 V threshold for error signal generation. Use Value: ±10% VZ tolerance and 237 Ω ZZT ensure <±1.5% output voltage deviation across load and line variations. |
Use Scenario: Protecting downstream 24 V logic or analog circuitry from input rail transients exceeding 22 V. IC Role / Device Role / Timing Role: Shunt clamping element diverting excess current when input exceeds 20 V breakdown threshold. Use Value: 5.1 A IZSM rating absorbs 8.3 ms surges without degradation, eliminating need for parallel TVS devices. |
| Industrial Sensor Excitation Reference | Programmable Current Source Biasing |
Use Scenario: Providing stable excitation voltage to resistive bridge sensors (e.g., strain gauges) in harsh ambient conditions. IC Role / Device Role / Timing Role: Precision voltage source maintaining constant bias across temperature (–65 to +150 °C). Use Value: Low IR (<0.5 µA at 14.4 V) minimizes loading error; RθJL = 25 °C/W enables predictable thermal drift compensation. |
Use Scenario: Setting reference voltage for op-amp-based constant-current sources driving LEDs or laser diodes. IC Role / Device Role / Timing Role: Fixed VZ node defining current-setting resistor voltage drop in Howland or Wilson configurations. Use Value: Tight 20 V ±10% tolerance ensures <±2 V absolute current accuracy; 75 mA IZM supports >100 mA output drive via transistor buffering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5357B | Identical electrical specs (20 V ±10%, 65 mA IZT, 237 Ω ZZT), axial T-18 package, Sn/Pb plating. | Through-hole mounting only; requires wave solder or hand assembly; no RoHS compliance. | Select when legacy board compatibility or manual repair is prioritized over SMT automation and environmental compliance. |
| SMBJ5357B | Same VZ, IZT, ZZT, and IZM; DO-214AA (J-bend) package instead of DO-215AA; identical RoHS status. | Lower profile but less visible solder joints; different pad layout; slightly higher RθJA (100 °C/W vs. 90 °C/W). | Select when board space constraints favor J-bend geometry or existing DO-214AA footprint reuse is required. |
Compared with SMBG5357AE3/TR13, 1N5357B offers identical regulation performance but lacks SMT manufacturability and RoHS compliance, while SMBJ5357B matches all electrical parameters but trades gull-wing inspectability for compact J-bend placement-both require layout changes and do not support direct replacement.
Availability
SMBG5357AE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and medical sensor interfaces requiring stable component supply, RoHS compliance, and high-surge reliability.
Supply support for SMBG5357AE3/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 in space-constrained, thermally demanding applications where JEDEC-compatibility, surge resilience, and moisture-insensitive packaging are essential.
FAQ
What is the Zener voltage tolerance for SMBG5357AE3/TR13?
The SMBG5357AE3/TR13 has a ±10% Zener voltage tolerance, denoted by the "A" suffix in its part number. This means its breakdown voltage is guaranteed between 18.0 V and 22.0 V when tested at 65 mA (IZT) and 25 °C. The tolerance directly impacts regulation accuracy in feedback circuits and must be accounted for in worst-case design margins for SMBG5357AE3/TR13 applications.
Does SMBG5357AE3/TR13 require dry packing before reflow soldering?
No, SMBG5357AE3/TR13 has a moisture sensitivity level (MSL) of IPC/JEDEC J-STD-020B Level 1, meaning it does not absorb sufficient moisture to risk popcorning during reflow. No dry pack, baking, or humidity-controlled storage is required prior to assembly-reducing handling cost and process complexity for SMBG5357AE3/TR13 deployment.
What is the maximum surge current rating for SMBG5357AE3/TR13?
The SMBG5357AE3/TR13 is rated for a non-repetitive peak surge current (IZSM) of 5.1 A, defined as an 8.3 ms half-sine waveform. This value is derived from its 20 V Zener voltage and 5 W power rating, enabling robust transient suppression without secondary protection components in SMBG5357AE3/TR13-based clamp circuits.
How does the DO-215AA package of SMBG5357AE3/TR13 differ from DO-214AA?
The DO-215AA package of SMBG5357AE3/TR13 uses gull-wing leads for visible solder joint inspection and lower coplanarity risk, whereas DO-214AA (used in SMBJ5357B) employs J-bend leads. Dimensions differ: DO-215AA has 1.96–2.10 mm lead width (A) and 4.06–4.57 mm body width (B), while DO-214AA has tighter tolerances and requires different stencil and pad layouts for SMBG5357AE3/TR13 replacement.
Is SMBG5357AE3/TR13 compatible with lead-free reflow profiles?
Yes, SMBG5357AE3/TR13 features RoHS-compliant matte-tin plating (e3 suffix) and is qualified for solder reflow at 260 °C for 10 seconds, fully supporting standard lead-free reflow profiles (e.g., JEDEC J-STD-020). Its thermal resistance (RθJL = 25 °C/W) and plastic encapsulation (UL94V-0) ensure reliability under repeated thermal cycling in SMBG5357AE3/TR13 manufacturing.
SMBG5357AE3/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:
- ±10%
- 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)
SMBG5357AE3/TR13 FAQ
1.How can I place an order for SMBG5357AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5357AE3/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 SMBG5357AE3/TR13 reliable?
The price and inventory of SMBG5357AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5357AE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5357AE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5357AE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5357AE3/TR13?
SMBG5357AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5357AE3/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 SMBG5357AE3/TR13?
For technical support, including SMBG5357AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5357AE3/TR13 requirements.
6.How does Aetrix verify that SMBG5357AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5357AE3/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 SMBG5357AE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5357AE3/TR13?
All SMBG5357AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5357AE3/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 SMBG5357AE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5357AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5357AE3/TR13 Tags
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