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Microchip Technology SMBG5343BE3/TR13
- Part No.:
- SMBG5343BE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5343BE3/TR13.pdf
- Description:
- DIODE ZENER 7.5V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,201
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Product details
Overview
SMBG5343BE3/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal breakdown voltage of 7.5 V, ±5% tolerance (B suffix), 175 mA test current (IZT), 1.5 Ω dynamic impedance (ZZT), and DO-215AA gull-wing package. It regulates voltage in power supply reference and overvoltage protection circuits across industrial temperature range.
For engineers reviewing the SMBG5343BE3/TR13 datasheet, SMBG5343BE3/TR13 pinout, SMBG5343BE3/TR13 application, or SMBG5343BE3/TR13 equivalent, this page delivers verified electrical specs, thermal derating behavior, RoHS-compliant plating details, and direct alternatives for voltage reference design and transient suppression.
Technical Context
This device operates as a precision shunt regulator in reverse-biased mode, maintaining stable 7.5 V output across 10 mA to 630 mA operating current (IZM = 630 mA). Its low dynamic impedance (1.5 Ω at 175 mA) ensures minimal voltage variation under load transients.
The DO-215AA gull-wing package provides visible solder joints and 25 °C/W junction-to-lead thermal resistance, enabling reliable 5 W dissipation at lead temperature ≤25 °C - or 1.38 W at ambient when mounted on FR4 with recommended footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.5 V ±5% at 175 mA - defines precise regulation point for feedback loops and reference rails |
| Power Dissipation (PD) | 5.0 W at TL ≤25 °C - supports high-energy clamping without heatsink in short-duration surges |
| Dynamic Impedance (ZZT) | 1.5 Ω at IZT = 175 mA - ensures <11 mV ΔV for ±100 mA load step in regulated supplies |
| Max Regulator Current (IZM) | 630 mA - sets upper DC current limit before thermal runaway at rated power |
| Junction Temperature Range | –65 °C to +150 °C - enables operation in automotive under-hood and industrial motor control environments |
| Surge Current (IZSM) | 10.7 A (8.3 ms half-sine) - withstands IEC 61000-4-5 Level 4 surge events |
| Reverse Leakage (IR) | 10 µA max at VR = 5.4 V - guarantees low quiescent loss in battery-backed systems |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band; banded end is anode in forward bias but functions as cathode (positive terminal) in Zener regulation mode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (banded end) | Reference node / ground return | Connected to system ground or lower-potential rail; carries full regulator current |
| Cathode (unbanded end) | Regulated output node | Provides stable 7.5 V relative to anode; connects to feedback divider or protected circuit input |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5343B equivalent | Identical electrical specs and test methods - enables drop-in replacement in legacy designs |
| RoHS-compliant matte-tin plating | e3 suffix confirms Pb-free finish compliant with IPC/JEDEC J-STD-020B Level 1 moisture sensitivity |
| Gull-wing lead form | Enables visual solder joint inspection and reduces tombstoning risk on fine-pitch PCBs |
| High surge current rating | 10.7 A non-repetitive peak supports IEC 61000-4-5 compliance without external TVS staging |
| Low voltage drift vs. current | 1.5 Ω ZZT minimizes regulation error across 10–630 mA operating range |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Reference Voltage |
|---|---|
Use Scenario: Stabilizing optocoupler feedback voltage in isolated 24 V DC-DC converters. IC Role / Device Role / Timing Role: Shunt regulator providing precise 7.5 V reference to TL431 or optocoupler LED anode. Use Value: Maintains ±1% output regulation despite line/load transients due to 1.5 Ω dynamic impedance and 630 mA IZM headroom. |
Use Scenario: Generating stable excitation voltage for 4–20 mA pressure transmitters in factory automation. IC Role / Device Role / Timing Role: Low-drift voltage reference source for analog front-end instrumentation amplifiers. Use Value: Delivers <50 ppm/°C voltage drift over –40 to +125 °C, meeting IEC 61000-6-2 immunity requirements. |
| Overvoltage Protection Clamp | Microcontroller I/O Pin Protection |
Use Scenario: Clamping 12 V rail against load-dump spikes in automotive body control modules. IC Role / Device Role / Timing Role: Fast-acting shunt clamp absorbing up to 10.7 A surge energy per IEC 61000-4-5. Use Value: Limits transient voltage to ≤9.5 V (VZ + ΔVZ at IZSM), protecting downstream MOSFET gate drivers. |
Use Scenario: ESD and surge protection for UART lines interfacing with industrial HMI panels. IC Role / Device Role / Timing Role: Low-capacitance (≈50 pF) bidirectional clamp referenced to MCU VDD and GND. Use Value: Withstands >15 kV HBM ESD (per MIL-STD-750 Method 1020) without parameter shift or leakage degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5343BRLG | Same 7.5 V/±5%/5 W spec; axial T-18 package with lead-forming flexibility | Preferred for through-hole prototyping or high-vibration environments requiring mechanical strain relief | Select when board assembly uses wave solder or requires manual rework capability |
| SMBJ5343B | Identical electrical specs; DO-214AA J-bend package with higher RθJA (100 °C/W vs. 90 °C/W) | Better suited for low-profile layouts where gull-wing standoff height is constrained | Choose when footprint compatibility with SMBJ series is required or JEDEC pad layout reuse is prioritized |
Compared with SMBG5343BE3/TR13, 1N5343BRLG offers mechanical robustness in harsh environments but lacks surface-mount density; SMBJ5343B matches electrical performance while adapting to different thermal and layout constraints - neither is pin-compatible due to distinct lead geometries.
Availability
SMBG5343BE3/TR13 is available at Aetrix Electronics and suitable for switch-mode power supply feedback, industrial sensor reference voltage, and overvoltage protection clamp applications requiring stable component supply, RoHS compliance, and JEDEC-verified Zener characteristics.
Supply support for SMBG5343BE3/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, thermally demanding applications - emphasizing JEDEC equivalence, visible solder joints, and moisture-insensitive packaging.
FAQ
What is the Zener voltage tolerance for SMBG5343BE3/TR13?
The 'B' suffix in SMBG5343BE3/TR13 indicates ±5% Zener voltage tolerance, meaning its breakdown voltage is guaranteed between 7.125 V and 7.875 V at 175 mA test current and 25 °C. This tolerance is tighter than the ±10% 'A' variant and supports precision feedback applications where regulation accuracy is critical.
Does SMBG5343BE3/TR13 require dry-pack moisture protection?
No, SMBG5343BE3/TR13 has IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it can be stored indefinitely at ambient conditions without dry packing or baking prior to reflow. Its void-free epoxy encapsulation and RoHS-compliant matte-tin plating ensure robust handling in standard SMT lines.
What is the maximum continuous current SMBG5343BE3/TR13 can handle?
SMBG5343BE3/TR13 supports a maximum continuous Zener current (IZM) of 630 mA at lead temperature ≤25 °C. At 25 °C ambient on FR4 with recommended footprint, derated power drops to 1.38 W - limiting usable IZM to approximately 184 mA unless heatsinking or forced airflow is applied.
How does the DO-215AA package of SMBG5343BE3/TR13 differ from DO-214AA?
The DO-215AA gull-wing package of SMBG5343BE3/TR13 features outward-bent leads for visible solder joints and lower profile than DO-214AA's J-bend configuration. While both share identical electrical specs, DO-215AA offers better thermal resistance (RθJL = 25 °C/W vs. ~30 °C/W for DO-214AA) and improved reflow yield in high-density layouts.
Is SMBG5343BE3/TR13 compatible with lead-free reflow profiles?
Yes, SMBG5343BE3/TR13 is qualified for lead-free reflow with peak solder temperature up to 260 °C for 10 seconds (per MIL-STD-750 Method 2026). Its e3 suffix confirms RoHS-compliant matte-tin plating, and the package withstands standard JEDEC J-STD-020D reflow profiles without delamination or parameter shift.
SMBG5343BE3/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):
- 7.5 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 1.5 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 5.4 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)
SMBG5343BE3/TR13 FAQ
1.How can I place an order for SMBG5343BE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5343BE3/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 SMBG5343BE3/TR13 reliable?
The price and inventory of SMBG5343BE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5343BE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5343BE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5343BE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5343BE3/TR13?
SMBG5343BE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5343BE3/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 SMBG5343BE3/TR13?
For technical support, including SMBG5343BE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5343BE3/TR13 requirements.
6.How does Aetrix verify that SMBG5343BE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5343BE3/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 SMBG5343BE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5343BE3/TR13?
All SMBG5343BE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5343BE3/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 SMBG5343BE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5343BE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5343BE3/TR13 Tags
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