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Microchip Technology SMBG5343C/TR13
- Part No.:
- SMBG5343C/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5343C/TR13.pdf
- Description:
- DIODE ZENER 7.5V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,032
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Product details
Overview
SMBG5343C/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal breakdown voltage of 7.5 V, ±2% tolerance (C suffix), 175 mA test current (IZT), 1.5 Ω dynamic impedance (ZZT), and DO-215AA gull-wing package. It regulates voltage in power supply feedback loops, overvoltage protection circuits, and reference voltage generation where stable 7.5 V clamping is required across wide temperature and current ranges.
For engineers reviewing the SMBG5343C/TR13 datasheet, SMBG5343C/TR13 pinout, SMBG5343C/TR13 application, or SMBG5343C/TR13 equivalent, key selection criteria include its 7.5 V Zener voltage at 175 mA, ±2% tolerance, 630 mA maximum regulator current (IZM), 1.5 Ω dynamic impedance, and thermal resistance of 25 °C/W junction-to-lead - critical for precision regulation and surge resilience in compact PCB layouts.
Technical Context
This device operates as a silicon planar Zener diode in reverse-biased breakdown mode, delivering stable voltage regulation with minimal variation versus current due to low dynamic impedance (1.5 Ω at IZT = 175 mA) and tight ±2% voltage tolerance. Its DO-215AA gull-wing package enables visible solder joints and supports high-density mounting without requiring dry pack per IPC/JEDEC J-STD-020B Level 1 moisture sensitivity.
The SMBG5343C/TR13 exhibits non-sensitive ESD behavior per MIL-STD-750 Method 1020, withstands 10.7 A non-repetitive 8.3 ms half-sine surge current (IZSM), and maintains regulation from -65 °C to +150 °C junction temperature. Its 25 °C/W RθJL enables effective heat transfer to PCB copper when mounted on FR4 with recommended footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.5 V at 175 mA test current - precise reference point for feedback networks and clamp thresholds. |
| Voltage Tolerance | ±2% (C suffix) - ensures tight output voltage control in regulated supplies and sensing circuits. |
| Max Regulator Current (IZM) | 630 mA - supports robust transient energy absorption without thermal runaway under sustained load. |
| Dynamic Impedance (ZZT) | 1.5 Ω at 175 mA - minimizes output voltage deviation during load current changes. |
| Power Dissipation | 5.0 W at TL < 25 °C - delivers high-energy clamping capability in compact surface-mount form factor. |
| Junction-to-Lead Thermal Resistance | 25 °C/W - enables efficient heat conduction to PCB copper, critical for reliability in continuous operation. |
| Surge Current (IZSM) | 10.7 A (8.3 ms half-sine) - protects downstream circuitry against lightning-induced or switching transients. |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band; banded end must be held positive relative to anode for proper Zener operation. Leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference/ground terminal | Connected to system ground or lower-potential node; forms return path for Zener current. |
| Cathode | Regulated output terminal | Banded end; connected to voltage node requiring clamping or reference; holds 7.5 V above anode when reverse-biased. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5343B equivalent | Identical electrical characteristics and testing to through-hole 1N5343B - simplifies legacy design migration. |
| Gull-wing lead geometry | Enables visual solder joint inspection and reliable reflow attachment on FR4 boards without tombstoning. |
| Level 1 moisture sensitivity | No dry pack required - reduces handling cost and eliminates bake-out steps before assembly. |
| Non-ESD-sensitive construction | Complies with MIL-STD-750 Method 1020 - eliminates need for special ESD handling in manufacturing. |
| High surge current rating | 10.7 A peak (8.3 ms) - provides single-event transient immunity exceeding IEC 61000-4-5 Level 3 requirements. |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Used in optocoupler feedback loop of isolated DC-DC converters to regulate output voltage. IC Role / Device Role / Timing Role: Zener reference element setting error amplifier threshold; defines 7.5 V regulation setpoint. Use Value: ±2% tolerance and 1.5 Ω dynamic impedance ensure output voltage stability within ±1% across line/load/temperature variations. |
Use Scenario: Placed across input rail of industrial sensor interface to limit transient spikes. IC Role / Device Role / Timing Role: Clamping diode shunting excess energy to ground during ESD or inductive kick events. Use Value: 10.7 A surge rating and 5 W power dissipation absorb 8.3 ms transients without degradation or failure. |
| Precision Voltage Reference | Microcontroller Reset Circuit |
Use Scenario: Provides stable 7.5 V reference for ADC biasing in battery-powered data loggers. IC Role / Device Role / Timing Role: Low-impedance voltage source maintaining accuracy despite varying supply and temperature. Use Value: 25 °C/W RθJL and ±2% tolerance enable drift < 0.5% over -40 °C to +85 °C ambient. |
Use Scenario: Monitors 12 V supply rail to trigger microcontroller reset when voltage drops below safe level. IC Role / Device Role / Timing Role: Reverse-biased Zener in comparator input network detecting undervoltage condition. Use Value: Tight 7.5 V threshold and minimal voltage shift vs. current allow accurate reset point definition within ±50 mV. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5343B | Through-hole DO-41 package; identical electrical specs (7.5 V, ±2%, 175 mA IZT, 1.5 Ω ZZT). | Requires axial-leaded PCB layout and wave soldering; not suitable for high-density SMT designs. | Select when legacy through-hole assembly or manual prototyping is used; avoid for automated SMT production. |
| SMBG5343B | Same DO-215AA package but ±5% tolerance (B suffix); otherwise identical VZ, IZT, ZZT, and IZM. | Acceptable where 7.5 V ±5% (7.13–7.88 V) meets system margin; lower cost than C-grade version. | Choose for cost-sensitive applications with relaxed voltage accuracy; verify feedback loop stability with wider tolerance. |
Compared with SMBG5343C/TR13, the 1N5343B offers identical regulation performance but mandates through-hole assembly, while SMBG5343B trades ±2% precision for lower cost in SMT form - making SMBG5343C/TR13 optimal for space-constrained, high-accuracy voltage references.
Availability
SMBG5343C/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, and precision voltage reference designs requiring stable component supply, consistent parametric performance, and RoHS-compliant packaging.
Supply support for SMBG5343C/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 power conversion and protection circuits, emphasizing thermal robustness, surge resilience, and JEDEC compatibility.
FAQ
What is the Zener voltage and tolerance of SMBG5343C/TR13?
The SMBG5343C/TR13 has a nominal Zener voltage of 7.5 V measured at 175 mA test current (IZT), with a tight ±2% tolerance specified by the "C" suffix in the part number. This means the actual breakdown voltage falls between 7.35 V and 7.65 V under standard test conditions at TL = 25 °C, ensuring high accuracy in reference and regulation applications.
What package type does SMBG5343C/TR13 use and what are its mounting advantages?
SMBG5343C/TR13 uses the DO-215AA gull-wing surface-mount package. Its key mounting advantages include visible solder joints for automated optical inspection, compatibility with standard reflow profiles (260 °C for 10 s), Level 1 moisture sensitivity (no dry pack required), and low thermal resistance (25 °C/W junction-to-lead) for effective heat transfer to PCB copper.
How much surge current can SMBG5343C/TR13 withstand and under what conditions?
SMBG5343C/TR13 can withstand a non-repetitive peak surge current (IZSM) of 10.7 A, defined as the maximum value of an 8.3 ms half-sine waveform. This rating applies under single-event transient conditions and reflects the device's ability to absorb energy without failure - critical for protecting sensitive circuitry from lightning surges or inductive switching spikes.
Is SMBG5343C/TR13 RoHS compliant and what plating option does it use?
Yes, SMBG5343C/TR13 is RoHS compliant, indicated by the "e3" marking on the device body and confirmed by Microsemi documentation. It uses annealed matte-tin plating on gull-wing leads, which is solderable per MIL-STD-750 Method 2026 and compatible with lead-free reflow processes.
What is the maximum regulator current (IZM) for SMBG5343C/TR13 and how is it derived?
The maximum regulator current (IZM) for SMBG5343C/TR13 is 630 mA. This value is calculated per Note 3 in the datasheet: IZM = P / VZM, where P = 5.0 W and VZM = 7.5 V × 1.02 = 7.65 V (high end of ±2% tolerance), yielding 654 mA - rounded down to 630 mA to account for thermal derating and safety margin in real-world PCB mounting.
SMBG5343C/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:
- ±2%
- 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)
SMBG5343C/TR13 FAQ
1.How can I place an order for SMBG5343C/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5343C/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 SMBG5343C/TR13 reliable?
The price and inventory of SMBG5343C/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5343C/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5343C/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5343C/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5343C/TR13?
SMBG5343C/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5343C/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 SMBG5343C/TR13?
For technical support, including SMBG5343C/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5343C/TR13 requirements.
6.How does Aetrix verify that SMBG5343C/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5343C/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 SMBG5343C/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5343C/TR13?
All SMBG5343C/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5343C/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 SMBG5343C/TR13 part is unused and in its original packaging.
Return procedure for SMBG5343C/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5343C/TR13 Tags
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