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Microchip Technology SMBG5344C/TR13
- Part No.:
- SMBG5344C/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5344C/TR13.pdf
- Description:
- DIODE ZENER 8.2V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,238
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Product details
Overview
SMBG5344C/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 15 V, ±2% tolerance (C suffix), 75 mA maximum regulator current (IZM), and DO-215AA gull-wing package. It regulates voltage across wide current and temperature ranges and is used in power supply overvoltage protection and reference circuits.
For engineers reviewing the SMBG5344C/TR13 datasheet, SMBG5344C/TR13 pinout, SMBG5344C/TR13 application, or SMBG5344C/TR13 equivalent, key selection criteria include Zener voltage accuracy, surge current capability (8.0 A), thermal resistance (90 °C/W on FR4), and RoHS-compliant matte-tin plating.
Technical Context
This device operates as a precision voltage reference in reverse-biased breakdown mode, maintaining stable output voltage under varying load and temperature conditions. Its dynamic impedance is 2.5 Ω at 100 mA test current (IZT), and it exhibits minimal voltage drift versus current due to low ZZT.
The SMBG5344C/TR13 is rated for 5.0 W dissipation at lead temperature ≤25 °C, derating linearly above that point per the published power derating curve. It withstands non-repetitive 8.3 ms half-sine surge currents up to 8.0 A and meets MIL-STD-750 ESD immunity requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15 V ±2% - precise regulation point at 75 mA, enabling accurate voltage clamping in feedback loops. |
| Power Dissipation (PD) | 5.0 W @ TL ≤25 °C - supports high-energy transient suppression when adequately heatsunk. |
| Max Regulator Current (IZM) | 75 mA - defines safe continuous DC operating limit for stable regulation without thermal runaway. |
| Surge Current (IZSM) | 8.0 A (8.3 ms half-sine) - handles lightning-induced or switching transients in industrial power rails. |
| Dynamic Impedance (ZZT) | 2.5 Ω @ IZT = 75 mA - ensures tight voltage regulation under dynamic load changes. |
| Junction Temp Range | –65 to +150 °C - suitable for automotive under-hood and industrial control environments. |
| Thermal Resistance RθJA | 90 °C/W on FR4 (1 oz Cu) - requires careful PCB copper area design to maintain safe junction temperature. |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band; anode and cathode terminals are exposed on opposite sides of the molded epoxy body for visible solder joint inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Positive terminal in reverse bias | Connected to regulated voltage rail; polarity must be observed to avoid forward conduction. |
| Anode | Negative terminal in reverse bias | Connected to ground or lower-potential node; forms reference path for shunt regulation. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5344B equivalent | Identical electrical specs and test methods-enables drop-in replacement in legacy designs. |
| RoHS-compliant matte-tin plating | Meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity-no dry pack required before reflow. |
| Gull-wing lead form | Enables visual solder joint inspection and high-density PCB layout without tombstoning risk. |
| High surge current rating | 8.0 A non-repetitive peak withstand-protects downstream circuitry from line transients. |
Applications
| Industrial Power Supply Protection | Automotive ECU Reference |
|---|---|
Use Scenario: Clamping overvoltage spikes on 12 V/24 V DC input rails in programmable logic controllers and motor drives. IC Role / Device Role / Timing Role: Shunt voltage regulator providing fail-safe clamping during load dump or inductive kickback events. Use Value: Prevents damage to microcontrollers and interface ICs by limiting rail voltage to 15.3 V (max) under surge conditions. | Use Scenario: Providing stable 15 V reference for analog sensor signal conditioning in engine control units. IC Role / Device Role / Timing Role: Precision voltage reference source for ADC biasing and op-amp feedback networks. Use Value: ±2% tolerance ensures <±0.3 V error in sensor scaling, supporting ASIL-B functional safety compliance. |
| Telecom Line Card Protection | Medical Equipment Power Monitoring |
Use Scenario: Protecting Ethernet PHY interfaces and PoE injectors against induced surges on data lines. IC Role / Device Role / Timing Role: Transient voltage suppressor placed across isolated DC-DC converter outputs. Use Value: 8.0 A surge rating absorbs IEEE 802.3af/bt-compliant surge tests without degradation. | Use Scenario: Monitoring auxiliary 15 V supply rails in diagnostic imaging systems requiring long-term calibration stability. IC Role / Device Role / Timing Role: Primary voltage reference for power-good detection and brownout monitoring circuits. Use Value: Low dynamic impedance (2.5 Ω) minimizes voltage droop during load transients, ensuring reliable fault flag generation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5344B | Same Zener voltage (15 V), ±5% tolerance, axial T-18 package, higher RθJA (~125 °C/W). | Requires through-hole mounting and larger board area; less suitable for high-density SMT production. | Select when legacy through-hole assembly or higher-temperature ambient operation demands axial package robustness. |
| SMBJ5344C | Same Zener voltage (15 V), ±2% tolerance, DO-214AA J-bend package, identical electrical specs but different thermal profile (RθJA = 85 °C/W). | Better thermal performance on FR4 but incompatible footprint; requires PCB redesign. | Choose when optimizing for thermal efficiency in space-constrained SMT layouts where gull-wing inspection is not mandatory. |
Compared with SMBG5344C/TR13, 1N5344B offers mechanical ruggedness in through-hole form but sacrifices density and thermal performance, while SMBJ5344C improves heat dissipation but mandates footprint change-SMBG5344C/TR13 balances manufacturability, inspection, and thermal capability in standard SMT lines.
Availability
SMBG5344C/TR13 is available at Aetrix Electronics and suitable for industrial power supply protection, automotive ECU reference, and telecom line card protection requiring stable component supply and full traceability.
Supply support for SMBG5344C/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.
The SMBG53xx series was designed specifically for surface-mount voltage regulation in harsh-environment power systems where precision, surge resilience, and RoHS compliance are critical.
FAQ
What is the Zener voltage tolerance of SMBG5344C/TR13?
The SMBG5344C/TR13 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in the part number. This means its nominal 15 V Zener voltage falls within 14.7 V to 15.3 V at the specified test current of 75 mA, enabling tighter regulation than ±5% or ±10% variants in precision reference applications.
Does SMBG5344C/TR13 require dry packing before reflow soldering?
No, SMBG5344C/TR13 does not require dry packing prior to reflow. Its moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1, meaning it can be stored indefinitely at ambient conditions without baking. The device uses void-free UL94V-0 epoxy encapsulation and RoHS-compliant matte-tin plating compatible with standard Pb-free reflow profiles up to 260 °C for 10 seconds.
What is the maximum surge current rating for SMBG5344C/TR13?
The SMBG5344C/TR13 is rated for a non-repetitive peak surge current (IZSM) of 8.0 A, defined as an 8.3 ms half-sine waveform. This rating enables reliable protection against common industrial transients such as inductive switch-off spikes and lightning-induced surges on DC power rails when used with appropriate series impedance.
How does the thermal resistance of SMBG5344C/TR13 compare between junction-to-lead and junction-to-ambient?
SMBG5344C/TR13 has a junction-to-lead thermal resistance (RθJL) of 25 °C/W and a junction-to-ambient resistance (RθJA) of 90 °C/W when mounted on FR4 with 1 oz copper and the recommended pad layout. The 3.6× difference highlights the importance of thermal vias and copper pour to minimize ambient temperature rise and sustain full 5 W power dissipation.
Is SMBG5344C/TR13 compatible with JEDEC 1N5344B in terms of electrical performance?
Yes, SMBG5344C/TR13 is electrically equivalent to JEDEC 1N5344B per Microsemi documentation, sharing identical Zener voltage, dynamic impedance, leakage current, and surge ratings. However, SMBG5344C/TR13 uses a surface-mount DO-215AA gull-wing package, whereas 1N5344B is axial T-18-making them functionally interchangeable but not mechanically pin-compatible.
SMBG5344C/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):
- 8.2 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 1.5 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 5.9 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)
SMBG5344C/TR13 FAQ
1.How can I place an order for SMBG5344C/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5344C/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 SMBG5344C/TR13 reliable?
The price and inventory of SMBG5344C/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5344C/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5344C/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5344C/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5344C/TR13?
SMBG5344C/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5344C/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 SMBG5344C/TR13?
For technical support, including SMBG5344C/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5344C/TR13 requirements.
6.How does Aetrix verify that SMBG5344C/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5344C/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 SMBG5344C/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5344C/TR13?
All SMBG5344C/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5344C/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 SMBG5344C/TR13 part is unused and in its original packaging.
Return procedure for SMBG5344C/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5344C/TR13 Tags
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