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Microchip Technology SMBG5344CE3/TR13
- Part No.:
- SMBG5344CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5344CE3/TR13.pdf
- Description:
- DIODE ZENER 8.2V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,999
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Product details
Overview
SMBG5344CE3/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal breakdown voltage of 8.2 V, ±2% tolerance (C suffix), and maximum Zener current of 580 mA at 25 °C. It uses DO-215AA gull-wing package, delivers low dynamic impedance (1.5 Ω at IZT), and is rated for surge current up to 10 A (8.3 ms half-sine). It serves as precision voltage reference and overvoltage clamp in power supply regulation circuits.
For engineers reviewing the SMBG5344CE3/TR13 datasheet, SMBG5344CE3/TR13 pinout, SMBG5344CE3/TR13 application, or SMBG5344CE3/TR13 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (RθJL = 25 °C/W), surge current rating (IZSM = 10 A), and RoHS-compliant matte-tin plating per MIL-STD-750 method 2026.
Technical Context
This device operates in reverse-biased breakdown mode with specified test current IZT = 150 mA and knee current IZK = 1.0 mA. Its dynamic impedance ZZT = 1.5 Ω is measured at 1 kHz with 10% rms ac modulation superimposed on IZT, ensuring stable regulation under varying load conditions.
Thermal performance is defined by junction-to-lead resistance of 25 °C/W and junction-to-ambient resistance of 90 °C/W when mounted on FR4 with recommended footprint. Voltage regulation remains stable across -65 °C to +150 °C operating temperature range, with minimal VZ drift versus current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.2 V ±2% at IZT = 150 mA - defines precise clamping threshold for protection and reference |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - supports high-energy transient suppression with adequate heatsinking |
| Dynamic Impedance (ZZT) | 1.5 Ω at IZT - ensures minimal output voltage variation under changing load current |
| Max Surge Current (IZSM) | 10 A (8.3 ms half-sine) - withstands repetitive line transients without degradation |
| Junction Temperature Range | -65 °C to +150 °C - enables operation in automotive under-hood and industrial control environments |
| Reverse Leakage (IR) | 10 µA at VR = 5.9 V - guarantees low standby power loss in always-on circuits |
| Thermal Resistance (RθJL) | 25 °C/W - allows direct thermal path to PCB copper for efficient heat transfer |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band; banded end is positive during reverse-bias operation. Moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1 - no dry pack required prior to assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink in forward bias; connected to ground or low-side reference in Zener configuration | Provides return path for Zener current; must be routed with low-inductance trace in high-speed clamp applications |
| Cathode | Regulated output node in reverse bias; connected to protected rail or reference point | Carries full Zener current; requires thermal relief pad and sufficient copper area for 5 W dissipation |
Key Features
| Feature | Design Value |
|---|---|
| RoHS-compliant matte-tin plating | Meets MIL-STD-750 method 2026 solderability requirements without lead contamination risk |
| Gull-wing lead geometry | Enables visual post-reflow solder joint inspection and reduces tombstoning risk on fine-pitch layouts |
| Level 1 moisture sensitivity | Eliminates baking step before reflow, reducing manufacturing cycle time and cost |
| JEDEC 1N53xxB equivalent | Ensures drop-in compatibility with legacy designs using axial 1N5344B or SMBJ5344B variants |
| High IZM rating (580 mA) | Supports robust regulation across wide input voltage ranges without external current limiting |
Applications
| Power Supply Overvoltage Clamp | Industrial Sensor Reference |
|---|---|
Use Scenario: Protects 5 V or 12 V DC rails against transient spikes from switching regulators or inductive loads. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to clamp voltage at 8.2 V with ±2% accuracy. Use Value: Limits peak rail voltage to safe levels for downstream logic ICs and ADCs without requiring active supervision circuitry. | Use Scenario: Provides stable 8.2 V reference for analog front-end conditioning of pressure or temperature sensors. IC Role / Device Role / Timing Role: Precision shunt reference delivering low-impedance node with 1.5 Ω dynamic impedance. Use Value: Reduces reference voltage drift over temperature (-65 °C to +150 °C), improving sensor measurement repeatability. |
| Automotive ECU Protection | Programmable Logic Controller Input |
Use Scenario: Absorbs load-dump transients (ISO 7637-2 Pulse 5a) on 12 V battery-supplied engine control units. IC Role / Device Role / Timing Role: High-surge-capable Zener (10 A, 8.3 ms) placed at microcontroller power input stage. Use Value: Prevents latch-up or permanent damage during 120 V/100 ms transients without derating or parallel devices. | Use Scenario: Conditions 24 V digital input signals in PLC modules exposed to field wiring noise and surges. IC Role / Device Role / Timing Role: Clamps input voltage to 8.2 V before Schmitt-trigger buffer, enabling clean logic-level translation. Use Value: Maintains signal integrity with <10 µA leakage at 5.9 V, minimizing false triggering in noisy factory environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5344CE3/TR13 | J-bend DO-214AA package; RθJA = 100 °C/W vs. 90 °C/W; identical electrical specs | Lower profile but higher thermal resistance; less suitable for high-power continuous operation | Select when board height is constrained and average power <3 W |
| 1N5344BRLG | Axial DO-41 package; non-RoHS Sn/Pb plating; same VZ, tolerance, and IZM | Requires through-hole assembly; not compatible with SMT-only lines; higher moisture sensitivity | Select for legacy repair, prototyping, or mixed-technology boards |
Compared with SMBJ5344CE3/TR13 and 1N5344BRLG, SMBG5344CE3/TR13 offers optimal balance of SMT manufacturability, thermal performance (RθJL = 25 °C/W), and RoHS compliance-making it preferred for new industrial and automotive designs requiring high-reliability surface-mount voltage regulation.
Availability
SMBG5344CE3/TR13 is available at Aetrix Electronics and suitable for power supply protection, sensor reference design, and industrial control systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBG5344CE3/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 SMBG53xxB series was designed specifically for surface-mount voltage regulation and transient suppression in space-constrained, high-temperature environments where JEDEC-standard Zener performance and RoHS compliance are mandatory.
FAQ
What is the Zener voltage tolerance for SMBG5344CE3/TR13?
The "C" suffix in SMBG5344CE3/TR13 denotes a ±2% Zener voltage tolerance at IZT = 150 mA. This means the actual breakdown voltage falls between 8.036 V and 8.364 V under standard test conditions, enabling tighter regulation than ±5% (B suffix) or ±10% (A suffix) variants.
Does SMBG5344CE3/TR13 require dry packing before reflow soldering?
No. SMBG5344CE3/TR13 has IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it may be stored indefinitely at ambient conditions without desiccant or dry packing. This eliminates pre-reflow baking steps and reduces manufacturing overhead in high-volume SMT lines.
What is the maximum surge current rating for SMBG5344CE3/TR13?
SMBG5344CE3/TR13 is rated for a non-repetitive peak Zener surge current (IZSM) of 10 A, defined as a single 8.3 ms half-sine waveform. This rating is validated per Microsemi's test methodology and supports robust protection against common power-line transients such as ISO 7637-2 Pulse 5a.
How does the DO-215AA package of SMBG5344CE3/TR13 differ from DO-214AA?
The DO-215AA gull-wing package used by SMBG5344CE3/TR13 features wider lead spacing and straighter leads than the J-bend DO-214AA (SMBJ series), enabling better solder joint visibility and lower tombstoning risk. Thermal resistance RθJL is 25 °C/W for DO-215AA versus ~30 °C/W for DO-214AA, improving power handling.
Is SMBG5344CE3/TR13 compatible with existing 1N5344B-based designs?
Yes. SMBG5344CE3/TR13 is explicitly stated as electrically equivalent to JEDEC 1N5344B, with identical VZ, IZT, ZZT, and IZM specifications. Its DO-215AA footprint is not pin-compatible with axial DO-41, but layout adaptation enables direct functional replacement in SMT upgrades.
SMBG5344CE3/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)
SMBG5344CE3/TR13 FAQ
1.How can I place an order for SMBG5344CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5344CE3/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 SMBG5344CE3/TR13 reliable?
The price and inventory of SMBG5344CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5344CE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5344CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5344CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5344CE3/TR13?
SMBG5344CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5344CE3/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 SMBG5344CE3/TR13?
For technical support, including SMBG5344CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5344CE3/TR13 requirements.
6.How does Aetrix verify that SMBG5344CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5344CE3/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 SMBG5344CE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5344CE3/TR13?
All SMBG5344CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5344CE3/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 SMBG5344CE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5344CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5344CE3/TR13 Tags
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