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Microchip Technology SMBG5343A/TR13
- Part No.:
- SMBG5343A/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5343A/TR13.pdf
- Description:
- DIODE ZENER 7.5V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,065
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Product details
Overview
SMBG5343A/TR13 from Microsemi is a surface-mount 5 W Zener diode with a nominal breakdown voltage of 7.5 V ±10%, designed for precision voltage regulation in power supply rails, overvoltage protection circuits, and reference applications. It features a DO-215AA gull-wing package, 175 mA test current (IZT), 1.5 Ω dynamic impedance (ZZT), and operates across –65 °C to +150 °C junction temperature.
For engineers reviewing the SMBG5343A/TR13 datasheet, SMBG5343A/TR13 pinout, SMBG5343A/TR13 application, or SMBG5343A/TR13 equivalent, this page delivers verified electrical parameters, thermal derating behavior, RoHS-compliant plating status, and direct JEDEC 1N5343A compatibility - all critical for BOM validation and layout-constrained designs.
Technical Context
This device functions as a two-terminal silicon Zener diode operating in reverse-biased breakdown mode, delivering stable voltage regulation at 7.5 V under DC conditions with 175 mA test current. Its low dynamic impedance (1.5 Ω) ensures minimal voltage variation across load current changes, while its 5 W power rating is valid only when lead temperature (TL) remains ≤25 °C.
The SMBG5343A/TR13 uses a void-free thermosetting epoxy case rated UL94V-0, with cathode polarity indicated by a band and gull-wing terminals plated in matte tin for RoHS compliance. It meets MIL-STD-750 Method 1020 for ESD immunity and exhibits Level 1 moisture sensitivity per J-STD-020B - no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.5 V ±10% at IZT = 175 mA - defines regulated output voltage tolerance window for design margining |
| Power Dissipation (PD) | 5.0 W at TL ≤ 25 °C - requires thermal management via PCB copper pour or heatsinking to sustain full rating |
| Dynamic Impedance (ZZT) | 1.5 Ω at 175 mA - low impedance enables tight regulation under varying load currents |
| Max Regulator Current (IZM) | 630 mA - maximum continuous DC current before exceeding 5 W power limit at VZ high-end (8.25 V) |
| Junction Temperature Range | –65 °C to +150 °C - supports operation in automotive under-hood and industrial control environments |
| Thermal Resistance (RθJL) | 25 °C/W - quantifies junction-to-lead heat transfer efficiency for thermal modeling |
| Reverse Leakage (IR) | 10 µA max at VR = 5.4 V - confirms low standby power loss in high-impedance bias networks |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by a band on the body; terminals are anode (unbanded end) and cathode (banded end); polarity must be observed during placement to ensure correct reverse-bias operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection | Connected to circuit ground or lower potential node in shunt regulator configuration |
| Cathode | Zener breakdown terminal / high-side connection | Connected to input rail or protected node; voltage referenced to anode during regulation |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5343A equivalence | Identical electrical characteristics and testing - enables drop-in replacement without redesign |
| Gull-wing lead form | Enables visual solder joint inspection and reliable reflow attachment on FR4 boards |
| Level 1 moisture sensitivity | No dry pack or baking required prior to assembly - reduces manufacturing overhead |
| RoHS-compliant matte-tin plating | Meets EU Directive 2011/65/EU and IPC-J-STD-020B - suitable for green electronics production |
| High surge current rating | 10.7 A non-repetitive half-sine (8.3 ms) - withstands transient overvoltage events in power inputs |
Applications
| DC Power Supply Regulation | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Stabilizing 7.5 V reference rail for analog sensor interfaces in industrial PLC modules. IC Role / Device Role / Timing Role: Shunt voltage regulator maintaining constant bias point despite input ripple and load transients. Use Value: 1.5 Ω dynamic impedance minimizes output deviation under ±100 mA load swings, ensuring ADC reference stability. |
Use Scenario: Clamping 12 V automotive infotainment power input against load-dump spikes. IC Role / Device Role / Timing Role: Transient voltage suppressor diverting surge energy to ground before downstream LDOs. Use Value: 10.7 A peak surge current rating handles ISO 7637-2 Pulse 5a without degradation, preserving system uptime. |
| Low-Power Reference Source | ESD-Safe Bias Network |
Use Scenario: Generating precise 7.5 V bias for op-amp comparators in battery-powered IoT sensors. IC Role / Device Role / Timing Role: Precision voltage reference establishing trip thresholds independent of supply variation. Use Value: ±10% VZ tolerance and <10 µA leakage at 5.4 V enable microamp-level standby current budgets. |
Use Scenario: Providing robust bias to ESD protection diodes in USB-C port interface circuits. IC Role / Device Role / Timing Role: Stable voltage reference anchoring clamping thresholds for bidirectional TVS arrays. Use Value: MIL-STD-750 Method 1020 ESD immunity ensures no parametric shift after human-body-model discharges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5343A | Axial-leaded T-18 package; identical VZ, IZT, ZZT, and PD specs; non-surface-mount form factor | Requires through-hole PCB assembly and higher board real estate; unsuitable for automated SMT lines | Select when legacy through-hole design or manual prototyping demands axial packaging |
| SMBJ5343A | DO-214AA J-bend package; same electrical specs but different thermal resistance (RθJA = 100 °C/W vs. 90 °C/W) and footprint | Compatible with high-density layouts using J-bend geometry; requires revised pad layout and stencil design | Select when existing DO-214AA footprint reuse is prioritized over gull-wing visual inspection capability |
Compared with SMBG5343A/TR13, 1N5343A offers identical regulation performance in axial form but lacks SMT manufacturability, while SMBJ5343A matches electrical behavior in a J-bend variant with slightly reduced thermal efficiency - both require mechanical redesign but preserve functional equivalence.
Availability
SMBG5343A/TR13 is available at Aetrix Electronics and suitable for DC power supply regulation, overvoltage protection clamp, and low-power reference source applications requiring stable component supply, consistent RoHS compliance, and JEDEC-standard Zener performance.
Supply support for SMBG5343A/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 SMBG53xxA series belongs to Microsemi's surface-mount Zener diode product line, engineered for high-density power regulation and transient suppression where JEDEC compatibility, thermal robustness, and visual solder inspection are mandatory.
FAQ
What is the Zener voltage tolerance for SMBG5343A/TR13?
The SMBG5343A/TR13 has a Zener voltage tolerance of ±10%, meaning its breakdown voltage is specified between 6.75 V and 8.25 V at 175 mA test current (IZT). This tolerance is confirmed in the Electrical Characteristics table on Page 3 of the T4-LDS-0246-1 datasheet and applies directly to the 'A' suffix in the part number. The SMBG5343A/TR13 maintains this tolerance across its full operating temperature range.
Is SMBG5343A/TR13 RoHS compliant?
Yes, SMBG5343A/TR13 is RoHS compliant, as indicated by the absence of the 'e3' suffix and confirmed in the Mechanical and Packaging section: it uses RoHS-compliant annealed matte-tin plating per MIL-STD-750 Method 2026. The 'A' suffix denotes ±10% voltage tolerance, not plating type; all SMBG53xxA parts shipped post-2012 meet EU Directive 2011/65/EU requirements unless otherwise marked.
What is the maximum continuous Zener current for SMBG5343A/TR13?
The maximum continuous Zener current (IZM) for SMBG5343A/TR13 is 630 mA, calculated per Note 3 on Page 3 using P = 5 W and VZM = 7.5 V × 1.1 = 8.25 V. This value assumes lead temperature (TL) remains at or below 25 °C; derating is required above that temperature per the power derating curve in Figure 1.
Does SMBG5343A/TR13 have a defined surge current rating?
Yes, SMBG5343A/TR13 has a non-repetitive peak surge current (IZSM) rating of 10.7 A for an 8.3 ms half-sine waveform, as listed in the Electrical Characteristics table. This rating reflects its ability to absorb transient energy without failure and is validated per industry-standard surge test protocols defined in the datasheet.
What package type does SMBG5343A/TR13 use?
SMBG5343A/TR13 uses the DO-215AA gull-wing surface-mount package, characterized by flat, outward-bent leads enabling visual solder joint inspection. Its dimensions are documented on Page 5: A = 1.96–2.10 mm, B = 4.06–4.57 mm, C = 3.30–3.94 mm, with recommended pad layout (A = 8.13 mm, B = 2.16 mm, C = 2.79 mm) for optimal thermal and mechanical reliability.
SMBG5343A/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:
- ±10%
- 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)
SMBG5343A/TR13 FAQ
1.How can I place an order for SMBG5343A/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5343A/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 SMBG5343A/TR13 reliable?
The price and inventory of SMBG5343A/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5343A/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5343A/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5343A/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5343A/TR13?
SMBG5343A/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5343A/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 SMBG5343A/TR13?
For technical support, including SMBG5343A/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5343A/TR13 requirements.
6.How does Aetrix verify that SMBG5343A/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5343A/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 SMBG5343A/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5343A/TR13?
All SMBG5343A/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5343A/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 SMBG5343A/TR13 part is unused and in its original packaging.
Return procedure for SMBG5343A/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5343A/TR13 Tags
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