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Microchip Technology SMBG5346C/TR13
- Part No.:
- SMBG5346C/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5346C/TR13.pdf
- Description:
- DIODE ZENER 9.1V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,769
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Product details
Overview
SMBG5346C/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal breakdown voltage of 9.1 V, ±2% tolerance (C suffix), and maximum Zener current of 520 mA at 25 °C. It uses DO-215AA gull-wing package, features 2.0 Ω dynamic impedance at 150 mA test current, and is rated for surge current up to 9.2 A (8.3 ms half-sine). It serves as precision voltage reference and overvoltage clamp in power supply feedback loops.
For engineers reviewing the SMBG5346C/TR13 datasheet, SMBG5346C/TR13 pinout, SMBG5346C/TR13 application, or SMBG5346C/TR13 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (RθJL = 25 °C/W), surge capability (IZSM = 9.2 A), moisture sensitivity level (MSL 1), and RoHS-compliant matte-tin plating.
Technical Context
This device operates in reverse-bias breakdown mode with tightly controlled VZ = 9.1 V at IZT = 150 mA, exhibiting low dynamic impedance (ZZT = 2.0 Ω) and minimal voltage drift over temperature (TJ = –65 to +150 °C). Its DO-215AA gull-wing leads enable visual solder joint inspection and support automated reflow per JEDEC J-STD-020B.
The SMBG5346C/TR13 delivers stable regulation across wide current range (IZK = 1.0 mA to IZM = 520 mA), maintains <5 µA reverse leakage at VR = 6.9 V, and withstands non-repetitive surge currents up to 9.2 A without degradation-critical for transient suppression in DC-DC converter feedback paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.1 V ±2% at IZT = 150 mA - ensures tight regulation in voltage reference circuits. |
| Power Dissipation | 5.0 W at TL < 25 °C - supports high-current clamping with adequate heat sinking. |
| Dynamic Impedance | 2.0 Ω at IZT = 150 mA - minimizes output voltage variation under load transients. |
| Max Surge Current | 9.2 A (8.3 ms half-sine) - protects downstream circuitry from short-duration overvoltage events. |
| Thermal Resistance | RθJL = 25 °C/W - enables predictable junction temperature rise when mounted on PCB lead frame. |
| Moisture Sensitivity | Level 1 per J-STD-020B - eliminates dry-pack requirement and simplifies handling/storage. |
| Reverse Leakage | <7.5 µA at VR = 6.9 V - ensures low standby power loss in bias networks. |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode band marking; terminals are anode and cathode only. Cathode is identified by colored band; device must be operated with banded end positive relative to anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Breakdown terminal | Connected to regulated voltage node; reverse-biased during operation. |
| Anode | Reference/ground terminal | Typically tied to system ground or feedback reference point in regulator circuits. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5346B equivalent | Identical electrical specs and testing to legacy through-hole 1N5346B - enables drop-in replacement in legacy designs. |
| RoHS-compliant matte-tin plating | Meets IPC/JEDEC solderability standards (method 2026) - ensures reliable reflow joints without Pb-based processes. |
| Gull-wing lead geometry | Enables optical solder-joint inspection and reduces tombstoning risk during SMT assembly. |
| MSL Level 1 rating | No dry pack or baking required before assembly - lowers manufacturing overhead and avoids moisture-induced defects. |
| High surge current rating | 9.2 A non-repetitive peak - provides robust transient immunity in industrial power supplies without external TVS. |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback or forward converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Precision voltage reference establishing error amplifier threshold. Use Value: ±2% VZ tolerance and 2.0 Ω ZZT ensure stable regulation across line/load/temperature variations. |
Use Scenario: Clamps transient spikes on 12 V rail caused by inductive switching or ESD events. IC Role / Device Role / Timing Role: Fast-acting shunt protector diverting excess energy to ground. Use Value: 9.2 A surge rating and 9.1 V clamping threshold protect downstream logic and analog ICs within spec. |
| Industrial Sensor Bias Network | Programmable Reference Voltage Generator |
Use Scenario: Provides stable excitation voltage for bridge-based pressure or temperature sensors in harsh environments. IC Role / Device Role / Timing Role: Low-drift, low-noise voltage source referenced to system ground. Use Value: MSL Level 1 and –65 to +150 °C operating range ensure reliability in uncontrolled ambient conditions. |
Use Scenario: Sets precise reference for DAC output buffers or ADC input scaling in programmable logic controllers. IC Role / Device Role / Timing Role: Fixed-voltage node defining full-scale analog range. Use Value: 2.0 Ω dynamic impedance minimizes loading-induced voltage shift when driving op-amp inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5346B | Through-hole DO-41 package; identical VZ, IZM, and ZZT; no MSL rating. | Requires manual or wave soldering; unsuitable for high-density SMT layouts. | Select when retrofitting legacy through-hole boards or prototyping without SMT capability. |
| SMBJ5346C | J-bend DO-214AA package; same VZ, tolerance, and power rating; RθJA = 90 °C/W vs. 25 °C/W (RθJL). | Higher thermal resistance limits sustained current in compact layouts without copper pour. | Select when footprint compatibility with DO-214AA is required or when lower-cost J-bend assembly is preferred. |
Compared with SMBG5346C/TR13, 1N5346B offers identical regulation performance but lacks SMT manufacturability and MSL Level 1 handling, while SMBJ5346C trades gull-wing inspectability and superior thermal conduction for J-bend footprint compatibility and lower assembly cost.
Availability
SMBG5346C/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, and industrial sensor bias networks requiring stable component supply and RoHS compliance.
Supply support for SMBG5346C/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 SMBG53xx series was designed specifically for surface-mount voltage regulation and transient suppression in space-constrained, high-reliability power systems where visual solder inspection and MSL Level 1 handling are mandatory.
FAQ
What is the Zener voltage tolerance for SMBG5346C/TR13?
The SMBG5346C/TR13 has a Zener voltage tolerance of ±2%, indicated by the "C" suffix in the part number. This means its breakdown voltage is guaranteed between 8.92 V and 9.28 V when measured at IZT = 150 mA and TL = 25 °C. This tighter tolerance supports precision regulation in feedback networks where stability margins are critical.
Does SMBG5346C/TR13 require dry packing before SMT assembly?
No, SMBG5346C/TR13 does not require dry packing. It carries Moisture Sensitivity Level (MSL) 1 per IPC/JEDEC J-STD-020B, meaning it can be stored and assembled indefinitely at standard ambient conditions without baking or desiccant packaging-reducing handling complexity and avoiding moisture-related defects like popcorning.
What is the maximum surge current rating for SMBG5346C/TR13?
The SMBG5346C/TR13 is rated for a non-repetitive peak surge current (IZSM) of 9.2 A, defined as an 8.3 ms half-sine waveform. This rating is verified per Microsemi's qualification testing and enables robust transient suppression in DC-DC converter outputs and industrial control I/O lines without additional TVS devices.
How does the DO-215AA gull-wing package benefit SMBG5346C/TR13 in production?
The DO-215AA gull-wing package of SMBG5346C/TR13 allows real-time optical inspection of solder fillets during post-reflow AOI, reducing defect escape rates. Its lead geometry also minimizes tombstoning during reflow and improves coplanarity tolerance versus J-bend alternatives-key for high-yield automated SMT lines.
Is SMBG5346C/TR13 RoHS compliant?
Yes, SMBG5346C/TR13 is RoHS compliant, using annealed matte-tin plating per MIL-STD-750 method 2026. The "e3" designation is implied by the "C" suffix in Microsemi's nomenclature system for this family, confirming compliance with EU Directive 2011/65/EU and exemption-free lead-free requirements.
SMBG5346C/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):
- 9.1 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2 Ohms
- Current - Reverse Leakage @ Vr:
- 7.5 µA @ 6.6 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)
SMBG5346C/TR13 FAQ
1.How can I place an order for SMBG5346C/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5346C/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 SMBG5346C/TR13 reliable?
The price and inventory of SMBG5346C/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5346C/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5346C/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5346C/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5346C/TR13?
SMBG5346C/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5346C/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 SMBG5346C/TR13?
For technical support, including SMBG5346C/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5346C/TR13 requirements.
6.How does Aetrix verify that SMBG5346C/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5346C/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 SMBG5346C/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5346C/TR13?
All SMBG5346C/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5346C/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 SMBG5346C/TR13 part is unused and in its original packaging.
Return procedure for SMBG5346C/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5346C/TR13 Tags
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