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Microchip Technology SMBG5342AE3/TR13
- Part No.:
- SMBG5342AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5342AE3/TR13.pdf
- Description:
- DIODE ZENER 6.8V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,731
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Product details
Overview
SMBG5342AE3/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal breakdown voltage of 6.8 V ±10%, 175 mA test current (IZT), 1.0 Ω dynamic impedance (ZZT), and DO-215AA gull-wing package. It regulates voltage across wide current and temperature ranges and is used in power supply overvoltage clamping and reference circuits.
For engineers reviewing the SMBG5342AE3/TR13 datasheet, SMBG5342AE3/TR13 pinout, SMBG5342AE3/TR13 application, or SMBG5342AE3/TR13 equivalent, this page delivers verified electrical specs, thermal performance data, JEDEC-compliant packaging details, and real-world design context for stable voltage regulation in industrial and embedded power systems.
Technical Context
This device operates as a precision shunt regulator in reverse-biased mode, maintaining stable output voltage under varying load and line conditions. Its 6.8 V Zener voltage is specified at 175 mA IZT with ±10% tolerance (suffix 'A'), and exhibits low 1.0 Ω dynamic impedance near the knee region.
Designed for surface-mount high-density PCBs, it uses a DO-215AA gull-wing lead frame with RoHS-compliant matte-tin plating. Thermal resistance is 25 °C/W junction-to-lead and 90 °C/W junction-to-ambient on FR4 with recommended footprint - enabling reliable 5 W dissipation only when lead temperature remains below 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.8 V ±10% at 175 mA IZT - defines regulated output voltage under nominal bias |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - requires heatsinking via leads; derates to 1.38 W at TA = 25 °C on FR4 |
| Dynamic Impedance (ZZT) | 1.0 Ω at 175 mA - ensures minimal voltage shift under load transients |
| Max Reverse Current (IR) | 10 µA at VR = 5.2 V - confirms low leakage below breakdown threshold |
| Surge Current (IZSM) | 14.4 A (8.3 ms half-sine) - withstands short-duration overvoltage events without failure |
| Junction Temp Range | –65 to +150 °C - supports operation in extended industrial environments |
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 in shunt regulation | Connected to system ground or lower-potential rail; carries full load current during regulation |
| Cathode (unbanded end) | Regulated output node | Connected to voltage rail being stabilized; maintains 6.8 V relative to anode under reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5342B equivalent | Identical electrical characteristics and test methods - enables drop-in replacement in legacy designs |
| Moisture Sensitivity Level 1 | No dry pack required - simplifies handling and eliminates bake-out prior to reflow |
| Gull-wing lead form | Visible solder joints - supports automated optical inspection (AOI) and rework accessibility |
| RoHS-compliant matte-tin plating | MIL-STD-750 solderable finish - ensures reliability in lead-free reflow profiles up to 260 °C |
Applications
| Power Supply Overvoltage Clamp | DC Reference Voltage Generator |
|---|---|
Use Scenario: Protects downstream ICs from transient overvoltage spikes in 5–12 V DC power rails. IC Role / Device Role / Timing Role: Shunt regulator that conducts excess current when input exceeds 6.8 V, limiting rail voltage. Use Value: 14.4 A non-repetitive surge rating absorbs 8.3 ms transients without degradation, preserving system integrity. |
Use Scenario: Provides stable 6.8 V reference for ADC biasing or comparator thresholds in sensor signal chains. IC Role / Device Role / Timing Role: Precision voltage reference source with 1.0 Ω dynamic impedance minimizing load-induced drift. Use Value: ±10% tolerance and low 10 µA leakage at 5.2 V ensure predictable turn-on behavior and minimal error contribution. |
| Industrial Motor Control Feedback | Automotive Body Control Module (BCM) |
Use Scenario: Clamps regenerative voltage spikes from brushed DC motor back-EMF in factory automation drives. IC Role / Device Role / Timing Role: Transient voltage suppressor placed across motor terminals or H-bridge outputs. Use Value: –65 to +150 °C operating range and 25 °C/W RθJL support direct mounting to copper pour for thermal stability. |
Use Scenario: Regulates auxiliary 6.8 V rail for microcontroller peripherals in 12 V automotive BCMs. IC Role / Device Role / Timing Role: Low-profile shunt regulator replacing through-hole Zeners in space-constrained modules. Use Value: DO-215AA gull-wing package enables high-density layout and AOI-compatible solder joints per IPC/JEDEC standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5342B | Axial-leaded T-18 package; identical VZ, IZT, ZZT, and IR specs | Requires through-hole assembly and larger board area; not suitable for high-density SMT lines | Select when legacy through-hole manufacturing or manual prototyping is preferred |
| SMBJ5342B | DO-214AA J-bend package; same electrical specs but higher RθJA (100 °C/W vs. 90 °C/W) | Lower thermal efficiency on FR4; requires larger copper area for equivalent 5 W operation | Select when existing J-bend footprint is standardized and thermal margin permits |
Compared with SMBG5342AE3/TR13, 1N5342B offers identical regulation performance but demands through-hole assembly, while SMBJ5342B fits J-bend layouts but sacrifices 10 °C/W thermal resistance - making SMBG5342AE3/TR13 optimal for high-density, thermally constrained SMT applications requiring visible solder joints and Level 1 moisture handling.
Availability
SMBG5342AE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and embedded sensor reference circuits requiring stable component supply with RoHS compliance and gull-wing SMT compatibility.
Supply support for SMBG5342AE3/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 and mixed-signal components for aerospace, defense, and industrial markets.
SMBG5342AE3/TR13 belongs to Microsemi's SMBG-series 5 W Zener family, engineered for robust voltage regulation in harsh environments where thermal stability, surge resilience, and JEDEC-compatibility are critical.
FAQ
What is the Zener voltage tolerance of SMBG5342AE3/TR13?
The SMBG5342AE3/TR13 has a Zener voltage tolerance of ±10%, denoted by the 'A' suffix in its part number. Its nominal breakdown voltage is 6.8 V, meaning the actual VZ falls between 6.12 V and 7.48 V when measured at 175 mA IZT and TL = 25 °C. This tolerance is confirmed in the Electrical Characteristics table on page 3 of the Microsemi datasheet T4-LDS-0246-1.
Can SMBG5342AE3/TR13 replace 1N5342B in existing designs?
Yes, SMBG5342AE3/TR13 is a surface-mount functional and electrical equivalent to the axial-leaded 1N5342B, with identical VZ, IZT, ZZT, IR, and surge ratings. However, the DO-215AA gull-wing package requires PCB footprint revision. SMBG5342AE3/TR13 retains the same 6.8 V ±10% regulation and 5 W power capability, making it a direct upgrade path for SMT transition.
What is the maximum continuous power dissipation for SMBG5342AE3/TR13?
The SMBG5342AE3/TR13 is rated for 5.0 W continuous power dissipation only when the lead temperature (TL) is maintained below 25 °C. On a standard FR4 board with 1 oz copper and recommended pad layout, its usable power drops to 1.38 W at 25 °C ambient due to RθJA = 90 °C/W. Derating curves in Figure 1 of the datasheet define safe operating limits across temperature.
Is SMBG5342AE3/TR13 RoHS compliant?
Yes, SMBG5342AE3/TR13 is RoHS compliant, as indicated by the 'e3' suffix in its part number. It features annealed matte-tin plating per MIL-STD-750 method 2026 and is qualified for lead-free reflow up to 260 °C for 10 seconds. The device meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity, eliminating dry-pack requirements.
What is the reverse leakage current specification for SMBG5342AE3/TR13?
The SMBG5342AE3/TR13 specifies a maximum reverse leakage current (IR) of 10 µA at a reverse test voltage (VR) of 5.2 V. This value is measured at TL = 30 °C and confirms tight control of off-state conduction well below the 6.8 V breakdown threshold, supporting low-power standby modes and precision reference applications.
SMBG5342AE3/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):
- 6.8 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 1 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 4.9 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)
SMBG5342AE3/TR13 FAQ
1.How can I place an order for SMBG5342AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5342AE3/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 SMBG5342AE3/TR13 reliable?
The price and inventory of SMBG5342AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5342AE3/TR13 is usually 5 days.
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SMBG5342AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5342AE3/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 SMBG5342AE3/TR13?
For technical support, including SMBG5342AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5342AE3/TR13 requirements.
6.How does Aetrix verify that SMBG5342AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5342AE3/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 SMBG5342AE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5342AE3/TR13?
All SMBG5342AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5342AE3/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 SMBG5342AE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5342AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5342AE3/TR13 Tags
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