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Microchip Technology SMBG5342A/TR13
- Part No.:
- SMBG5342A/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5342A/TR13.pdf
- Description:
- DIODE ZENER 6.8V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,908
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Product details
Overview
SMBG5342A/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 6.8 V, ±10% tolerance, 175 mA test current (IZT), 1.0 Ω dynamic impedance (ZZT), and 700 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 SMBG5342A/TR13 datasheet, SMBG5342A/TR13 pinout, SMBG5342A/TR13 application, or SMBG5342A/TR13 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (RθJL = 25 °C/W), surge current rating (14.4 A), junction temperature range (–65 to +150 °C), and RoHS compliance status (non-RoHS, Sn/Pb plating).
Technical Context
This device functions as a two-terminal voltage reference diode operating in reverse breakdown, delivering stable regulation across wide current (1.0 mA to 700 mA) and temperature (–65 to +150 °C) ranges. Its low dynamic impedance (1.0 Ω at 175 mA) ensures minimal voltage variation under load transients.
The DO-215AA gull-wing package enables visible solder joints and supports high-density PCB layouts. Thermal performance is defined by RθJL = 25 °C/W (junction-to-lead) and RθJA = 90 °C/W (junction-to-ambient on FR4), enabling reliable 5 W operation only with adequate lead heat sinking at TL < 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.8 V ±10% - defines regulated output voltage at 175 mA; actual range: 6.12 V to 7.48 V |
| Test Current (IZT) | 175 mA - specified operating point where VZ and ZZT are guaranteed |
| Dynamic Impedance (ZZT) | 1.0 Ω - small-signal AC impedance at 175 mA; determines regulation stiffness against current changes |
| Max Regulator Current (IZM) | 700 mA - maximum continuous DC current at TL ≤ 25 °C; sets upper limit for safe power dissipation |
| Surge Current (IZSM) | 14.4 A - non-repetitive 8.3 ms half-sine peak; enables transient overvoltage clamping capability |
| Junction Temperature Range | –65 to +150 °C - operational limits for silicon die; dictates board-level thermal design margin |
| Thermal Resistance (RθJL) | 25 °C/W - junction-to-lead thermal path; critical for calculating lead temperature rise under load |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode band marking. Cathode terminal is banded end; device must be biased with cathode positive relative to anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-biased input terminal | Connected to lower-potential node; carries full regulator current during conduction |
| Cathode | Regulated output terminal | Banded end; held at stable VZ above anode; referenced to ground or feedback node in SMPS |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5342B equivalent | Identical electrical specs and test methods to legacy through-hole 1N5342B, enabling drop-in replacement in upgraded designs |
| Moisture Sensitivity Level 1 | No dry pack required per IPC/JEDEC J-STD-020B - simplifies handling and eliminates bake-out prior to reflow |
| Gull-wing lead form | Enables visual solder joint inspection and reduces tombstoning risk vs. J-bend packages like DO-214AA |
| High surge current rating | 14.4 A non-repetitive 8.3 ms half-sine withstand - suitable for transient suppression in industrial I/O protection |
| Low dynamic impedance | 1.0 Ω at 175 mA - delivers tight voltage regulation (<70 mV deviation) across 100–700 mA load range |
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 shunt voltage reference providing precise VZ to bias optocoupler LED and set regulation threshold. Use Value: ±10% VZ tolerance and 1.0 Ω ZZT ensure consistent cross-regulation and <±1.5% output variation across line/load/temperature. |
Use Scenario: Protecting microcontroller I/O pins or sensor inputs from ESD or inductive switching transients in factory automation systems. IC Role / Device Role / Timing Role: Passive clamp element placed between signal line and ground, conducting only above 6.8 V. Use Value: 14.4 A IZSM rating absorbs 8.3 ms surges up to 100 W peak without degradation, meeting IEC 61000-4-5 Level 3. |
| DC Bus Voltage Monitoring | Reference Voltage Source |
Use Scenario: Scaling and conditioning high-voltage DC bus (e.g., 48 V or 380 V) for ADC input in battery management or motor drive systems. IC Role / Device Role / Timing Role: Zener-based voltage divider top element, establishing known reference point for resistive scaling network. Use Value: Stable 6.8 V output over –40 to +125 °C enables accurate bus measurement with <0.5% total error contribution from reference drift. |
Use Scenario: Generating stable bias voltages for analog comparators, op-amp references, or reset circuitry in embedded controllers. IC Role / Device Role / Timing Role: Low-noise, low-drift shunt reference supplying fixed 6.8 V to active circuitry with minimal current draw. Use Value: 1.0 Ω ZZT and <1 µA IR below 4.9 V ensure negligible loading error and fast settling for precision analog stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5342B | Through-hole DO-41 package; identical VZ, IZT, ZZT, and IZM specs; same ±10% tolerance and 5 W rating. | Requires axial-leaded PCB footprint and wave soldering; not suitable for automated SMT assembly. | Select when legacy through-hole manufacturing is retained or manual prototyping is preferred. |
| SMBJ5342A | Same Zener parameters but in DO-214AA J-bend package; RθJA = 100 °C/W (vs. 90 °C/W for SMBG); no gull-wing visual inspection benefit. | Higher thermal resistance requires larger copper pour for equivalent power handling; less robust against mechanical stress. | Select when existing DO-214AA footprint is standardized and gull-wing inspection is not required. |
Compared with SMBG5342A/TR13, 1N5342B offers identical regulation performance but mandates through-hole assembly, while SMBJ5342A provides SMT compatibility at the cost of reduced thermal efficiency and no visual solder verification - making SMBG5342A/TR13 optimal for high-reliability, high-volume SMT production requiring process traceability.
Availability
SMBG5342A/TR13 is available at Aetrix Electronics and suitable for power supply feedback regulation, overvoltage clamp protection, and DC bus voltage monitoring requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for SMBG5342A/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.
SMBG5342A/TR13 belongs to Microsemi's SMBG-series 5 W Zener diode family, engineered for high-density surface-mount voltage regulation and transient suppression in harsh-environment power systems.
FAQ
What is the Zener voltage tolerance and test condition for SMBG5342A/TR13?
The SMBG5342A/TR13 has a Zener voltage tolerance of ±10%, measured at a test current (IZT) of 175 mA and lead temperature (TL) of 25 °C. The actual regulated voltage range is therefore 6.12 V to 7.48 V under these conditions, as confirmed in the Electrical Characteristics table on page 3 of the T4-LDS-0246-1 datasheet.
Is SMBG5342A/TR13 RoHS compliant?
No, SMBG5342A/TR13 uses Sn/Pb plating and is not RoHS compliant. The "A" suffix denotes ±10% tolerance but does not indicate RoHS status; RoHS-compliant versions carry the "e3" suffix (e.g., SMBG5342Be3). This is explicitly stated in the Part Nomenclature section on page 2 of the datasheet.
What is the maximum power dissipation capability of SMBG5342A/TR13?
SMBG5342A/TR13 is rated for 5.0 W off-state power dissipation at lead temperature (TL) < 25 °C. At ambient temperature (TA) = 25 °C on FR4 with recommended footprint, its usable power drops to 1.38 W due to higher thermal resistance (RθJA = 90 °C/W), as specified in the Maximum Ratings table on page 1.
How does the DO-215AA package of SMBG5342A/TR13 differ from DO-214AA?
The DO-215AA package of SMBG5342A/TR13 features gull-wing leads enabling visible solder joints and lower tombstoning risk, whereas DO-214AA (used in SMBJ5342A) uses J-bend leads. DO-215AA also achieves lower RθJA (90 °C/W vs. 100 °C/W) and matches JEDEC 1N5342B mechanical form factor, per the Mechanical and Packaging section on page 2.
What is the surge current rating and waveform definition for SMBG5342A/TR13?
SMBG5342A/TR13 has a maximum non-repetitive Zener surge current (IZSM) of 14.4 A, defined as the peak value of an 8.3 ms half-sine waveform, per Note 4 on page 3 of the datasheet. This rating supports transient clamping in industrial power interfaces without permanent degradation.
SMBG5342A/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)
SMBG5342A/TR13 FAQ
1.How can I place an order for SMBG5342A/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5342A/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 SMBG5342A/TR13 reliable?
The price and inventory of SMBG5342A/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5342A/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5342A/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5342A/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5342A/TR13?
SMBG5342A/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5342A/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 SMBG5342A/TR13?
For technical support, including SMBG5342A/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5342A/TR13 requirements.
6.How does Aetrix verify that SMBG5342A/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5342A/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 SMBG5342A/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5342A/TR13?
All SMBG5342A/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5342A/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 SMBG5342A/TR13 part is unused and in its original packaging.
Return procedure for SMBG5342A/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5342A/TR13 Tags
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