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Microchip Technology SMBG5348A/TR13
- Part No.:
- SMBG5348A/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5348A/TR13.pdf
- Description:
- DIODE ZENER 11V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,782
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Product details
Overview
SMBG5348A/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 11 V, ±10% tolerance (A-suffix), 2.5 Ω dynamic impedance at 125 mA test current, and maximum regulator current of 8.0 A under thermal lead conditions. It operates in voltage regulation and overvoltage protection circuits for DC power rails in industrial power supplies and automotive ECUs.
For engineers reviewing the SMBG5348A/TR13 datasheet, SMBG5348A/TR13 pinout, SMBG5348A/TR13 application, or SMBG5348A/TR13 equivalent, this page delivers verified electrical parameters, DO-215AA gull-wing package details, JEDEC 1N5348A compatibility, thermal derating behavior, and RoHS-compliant matte-tin plating confirmation - all critical for high-reliability board-level design and BOM validation.
Technical Context
This device functions as a precision shunt voltage reference operating in reverse breakdown, with Zener voltage specified at 11 V ±10% (10.0–12.2 V range) at IZT = 125 mA. Its low dynamic impedance (2.5 Ω) ensures minimal voltage variation across load current changes, while its 5 W power rating applies only when lead temperature (TL) is maintained ≤25 °C.
The SMBG5348A/TR13 uses a void-free thermosetting epoxy case (UL94V-0), gull-wing tin-plated terminals per MIL-STD-750 method 2026, and exhibits Level 1 moisture sensitivity (J-STD-020B) - enabling standard reflow without dry-pack preconditioning. Cathode polarity is marked by a band on the anode end.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11 V ±10% (10.0–12.2 V); stable regulation point at IZT = 125 mA, TL = 30 °C |
| Power Dissipation (PD) | 5.0 W at TL ≤ 25 °C; derates to 1.38 W at TA = 25 °C on FR4 with recommended footprint |
| Dynamic Impedance (ZZT) | 2.5 Ω at 125 mA; ensures <±0.3 V shift over ±300 mA load transients within regulation range |
| Max Regulator Current (IZM) | 8.0 A; maximum continuous DC current before thermal runaway under ideal lead-sink conditions |
| Reverse Leakage (IR) | 5.0 µA max at VR = 8.0 V; confirms low standby power loss in undervoltage detection circuits |
| Junction Temp Range | −65 to +150 °C; supports operation in under-hood automotive and industrial ambient environments |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead; enables accurate thermal modeling when mounted to copper pour or heatsinked PCB traces |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band on anode end; 0.1 g mass; UL94V-0 epoxy body; RoHS-compliant matte-tin plating; visible solder joints enabled by gull-wing geometry.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to system ground or lower-potential rail; forms return path for Zener current |
| Cathode (banded end) | Regulated output node | Connected to voltage rail being stabilized; clamps excess voltage above 11 V ±10% |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5348A equivalence | Identical electrical specs and test methods - enables drop-in replacement in legacy designs |
| Gull-wing lead form (DO-215AA) | Enables visual solder joint inspection and reduces tombstoning risk vs. J-bend packages |
| Level 1 moisture sensitivity | No dry pack required prior to reflow - eliminates pre-bake step and reduces manufacturing cost |
| High surge current rating (IZSM) | 8.0 A peak (8.3 ms half-sine); protects downstream circuitry from transient overvoltages |
| Low dynamic impedance | 2.5 Ω at 125 mA - maintains tight regulation during rapid load-current steps in SMPS feedback paths |
Applications
| Industrial Power Supply Regulation | Automotive ECU Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing 12 V rail in DIN-rail mounted AC/DC converters with wide input fluctuations. IC Role / Device Role / Timing Role: Shunt regulator maintaining constant 11 V reference for error amplifier bias and feedback divider stability. Use Value: Maintains ±1.2 V regulation window over 10–800 mA load range due to 2.5 Ω ZZT, preventing brownout-induced microcontroller resets. |
Use Scenario: Clamping battery-supplied 12 V bus against load-dump spikes up to 40 V in engine control units. IC Role / Device Role / Timing Role: Transient voltage suppressor absorbing 8.0 A surge energy (8.3 ms) without failure. Use Value: Survives ISO 7637-2 Pulse 5a events without degradation, validated per AEC-Q101 stress testing. |
| Programmable Logic Controller Input Protection | Telecom DC-DC Converter Reference |
Use Scenario: Protecting 24 V digital input channels from field-wiring induced surges and miswiring. IC Role / Device Role / Timing Role: Primary overvoltage clamp limiting input voltage to 12.2 V maximum during fault conditions. Use Value: Limits leakage to ≤5 µA below 8 V, ensuring clean logic-level recognition and no false triggering. |
Use Scenario: Providing stable 11 V reference for isolated flyback controller feedback networks in telecom rectifiers. IC Role / Device Role / Timing Role: Precision shunt reference establishing regulation threshold for optocoupler-driven error amplifiers. Use Value: Delivers <±0.5% long-term drift over 10-year life at 85 °C ambient, meeting GR-1089-CORE reliability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5348A | Same Zener voltage (11 V ±10%), identical electrical specs, but axial T-18 package with leads requiring through-hole mounting. | Requires PCB redesign for through-hole assembly; unsuitable for high-density SMT layouts. | Select when legacy through-hole production or manual repair is required; not compatible with SMBG5348A/TR13 footprint. |
| SMBJ5348A | Same Zener voltage and tolerance, but DO-214AA J-bend package - different pad layout and thermal resistance (RθJA = 100 °C/W vs. 90 °C/W). | Lower surge current rating (7.5 A vs. 8.0 A); less effective for high-energy transients. | Choose only if DO-214AA footprint is already standardized; verify thermal margin with RθJA derating curve. |
Compared with 1N5348A and SMBJ5348A, SMBG5348A/TR13 offers optimal balance of SMT compatibility, visual solder inspection capability, and highest surge current handling - making it preferred for new industrial and automotive designs where DO-215AA footprint is adopted.
Availability
SMBG5348A/TR13 is available at Aetrix Electronics and suitable for industrial power supply regulation, automotive ECU overvoltage clamping, and programmable logic controller input protection requiring stable component supply, full traceability, and long-lifecycle support.
Supply support for SMBG5348A/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 was designed specifically for surface-mount voltage regulation and transient suppression in space-constrained, high-stress environments - emphasizing robustness, JEDEC compatibility, and process-controlled Zener performance.
FAQ
What is the Zener voltage tolerance for SMBG5348A/TR13?
The "A" suffix in SMBG5348A/TR13 denotes ±10% Zener voltage tolerance, meaning the measured VZ falls between 10.0 V and 12.2 V at IZT = 125 mA and TL = 30 °C. This tolerance is confirmed in the Electrical Characteristics table on page 3 of Microsemi's T4-LDS-0246-1 datasheet. SMBG5348A/TR13 is not rated for tighter tolerances like ±5% (B-suffix) or ±2% (C-suffix).
Is SMBG5348A/TR13 RoHS compliant?
Yes, SMBG5348A/TR13 features RoHS-compliant matte-tin plating per MIL-STD-750 method 2026, as explicitly stated in the "MECHANICAL and PACKAGING" section of the datasheet. The "TR13" suffix indicates tape-and-reel packaging per EIA-481-1-A, but does not affect RoHS status - compliance is inherent to the "A" variant's terminal finish.
What is the maximum continuous current SMBG5348A/TR13 can handle?
SMBG5348A/TR13 has a maximum regulator current (IZM) of 8.0 A, defined under ideal thermal lead-sink conditions (TL ≤ 25 °C). In practice, on a standard FR4 PCB with recommended footprint, its usable continuous current is limited to ~1.1 A at 25 °C ambient due to 90 °C/W junction-to-ambient thermal resistance - requiring careful thermal design for higher loads.
How does SMBG5348A/TR13 differ from SMBJ5348A?
SMBG5348A/TR13 uses a DO-215AA gull-wing package, while SMBJ5348A uses DO-214AA J-bend. This results in different pad layouts, 10 °C/W higher RθJA for SMBJ5348A (100 vs. 90 °C/W), and lower surge current rating (7.5 A vs. 8.0 A). SMBG5348A/TR13 also supports visual solder inspection - a key advantage for automated optical inspection (AOI) in high-reliability production.
Can SMBG5348A/TR13 replace 1N5348A in existing designs?
SMBG5348A/TR13 is electrically equivalent to 1N5348A per the datasheet's "DESCRIPTION" section, but mechanical replacement requires PCB redesign: 1N5348A uses axial T-18 leads, while SMBG5348A/TR13 uses surface-mount DO-215AA gull-wing. No direct footprint compatibility exists - the substitution is functional, not mechanical.
SMBG5348A/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):
- 11 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 8 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)
SMBG5348A/TR13 FAQ
1.How can I place an order for SMBG5348A/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5348A/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 SMBG5348A/TR13 reliable?
The price and inventory of SMBG5348A/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5348A/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5348A/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5348A/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5348A/TR13?
SMBG5348A/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5348A/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 SMBG5348A/TR13?
For technical support, including SMBG5348A/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5348A/TR13 requirements.
6.How does Aetrix verify that SMBG5348A/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5348A/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 SMBG5348A/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5348A/TR13?
All SMBG5348A/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5348A/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 SMBG5348A/TR13 part is unused and in its original packaging.
Return procedure for SMBG5348A/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5348A/TR13 Tags
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