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Microchip Technology SMBG5348B/TR13
- Part No.:
- SMBG5348B/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5348B/TR13.pdf
- Description:
- DIODE ZENER 11V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,044
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Product details
Overview
SMBG5348B/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 11 V, ±5% tolerance (B suffix), 125 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 SMBG5348B/TR13 datasheet, SMBG5348B/TR13 pinout, SMBG5348B/TR13 application, or SMBG5348B/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 in reverse breakdown to maintain stable voltage under varying load and temperature conditions. Its dynamic impedance is 2.5 Ω at 125 mA test current (IZT), and it exhibits minimal voltage drift versus current due to low ZZT and high IZM.
The SMBG5348B/TR13 is rated for 5.0 W at lead temperature <25 °C, derates linearly above that point, and withstands non-repetitive 8.0 A surge current (8.3 ms half-sine) per JEDEC standards. Its moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1 - no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11 V ±5% at 125 mA - defines precise regulation point for feedback or clamping circuits |
| Max Regulator Current (IZM) | 125 mA - supports sustained 5 W dissipation with adequate heat sinking at TL < 25 °C |
| Dynamic Impedance (ZZT) | 2.5 Ω at IZT = 125 mA - ensures low output voltage variation under load transients |
| Surge Current (IZSM) | 8.0 A (8.3 ms half-sine) - enables robust transient overvoltage suppression without failure |
| Thermal Resistance (RθJA) | 90 °C/W on FR4 (1 oz Cu, recommended footprint) - determines board-level thermal design margin |
| Reverse Leakage (IR) | 5.0 µA at VR = 8.0 V - guarantees low standby power loss in high-impedance bias networks |
| Junction Temp Range | –65 to +150 °C - supports operation in automotive under-hood and industrial environments |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band; banded end is positive during regulation. Terminals are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference/Return node | Connected to system ground or lower-potential rail; forms return path for Zener current |
| Cathode | Regulated output node | Banded terminal; held at stable 11 V relative to anode when reverse-biased above VZ |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N53xxB equivalent | Identical electrical specs and testing to through-hole 1N5348B - enables drop-in replacement in legacy designs |
| Gull-wing leads | Visible solder joints and automated optical inspection compatibility - improves SMT process yield and reliability |
| Level 1 moisture sensitivity | No dry pack or baking required before reflow - reduces manufacturing handling cost and risk of popcorning |
| High surge current rating | 8.0 A non-repetitive peak - protects downstream circuitry from ESD and lightning-induced transients |
| Low dynamic impedance | 2.5 Ω at 125 mA - maintains tight voltage regulation even with ±20% load current variation |
Applications
| Power Supply Overvoltage Clamp | DC Reference Voltage Generator |
|---|---|
Use Scenario: Protects 12 V rail from transient spikes exceeding 13 V in automotive body control modules. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown as shunt regulator and voltage clamp. Use Value: Clamps voltage at 11 V with 8.0 A surge capability, preventing damage to 12 V-rated microcontrollers and CAN transceivers. |
Use Scenario: Provides stable 11 V reference for ADC input scaling in industrial sensor signal conditioning. IC Role / Device Role / Timing Role: Precision voltage reference source with ±5% tolerance and low ZZT. Use Value: Enables accurate 12-bit ADC conversion over –40 to +85 °C with <0.5% full-scale error contribution from reference drift. |
| ESD Protection Network | Feedback Loop Stabilization |
Use Scenario: Integrated into USB port ESD protection array on embedded host controller PCB. IC Role / Device Role / Timing Role: Low-capacitance shunt element absorbing IEC 61000-4-2 contact discharge energy. Use Value: Withstands 15 kV air/8 kV contact discharge per MIL-STD-750 Method 1020 without parametric shift or failure. |
Use Scenario: Stabilizes switching regulator feedback divider in DC-DC converter for FPGA core supply. IC Role / Device Role / Timing Role: Zener-based voltage reference improving loop stability and transient response. Use Value: Reduces output voltage ripple by 40% vs. resistor-divider-only feedback due to low dynamic impedance (2.5 Ω). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5348B | Same VZ (11 V), ±5%, but axial T-18 package; higher RθJA (120 °C/W); no gull-wing geometry | Requires through-hole assembly; unsuitable for high-density SMT layouts | Select when retrofitting legacy through-hole boards or where manual repair access is prioritized over density |
| SMBJ5348B | Same electrical specs and DO-214AA J-bend package; identical Zener characteristics but different leadform and footprint | Compatible with J-bend pick-and-place tooling; requires different PCB pad layout than DO-215AA | Select when existing production line uses DO-214AA tooling or when board space constraints favor J-bend form factor |
Compared with SMBG5348B/TR13, 1N5348B offers identical regulation performance but lacks SMT compatibility, while SMBJ5348B provides equivalent functionality in a mechanically distinct surface-mount package requiring footprint redesign.
Availability
SMBG5348B/TR13 is available at Aetrix Electronics and suitable for power supply protection, precision voltage reference, and ESD suppression applications requiring stable component supply, RoHS compliance, and high surge immunity.
Supply support for SMBG5348B/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 SMBG53xxB series was designed to deliver JEDEC-standard Zener performance in a compact, visible-solder gull-wing package optimized for automated SMT assembly and high-volume industrial power management.
FAQ
What is the Zener voltage tolerance of SMBG5348B/TR13?
The SMBG5348B/TR13 has a Zener voltage tolerance of ±5%, indicated by the "B" suffix in its part number. This means its measured VZ at 125 mA test current falls between 10.45 V and 11.55 V at 25 °C. The tolerance remains stable across its operating temperature range of –65 to +150 °C, making SMBG5348B/TR13 suitable for precision regulation where tighter voltage control is required than standard ±10% devices provide.
Can SMBG5348B/TR13 replace 1N5348B in existing designs?
Yes, SMBG5348B/TR13 is electrically equivalent to 1N5348B per Microsemi documentation, sharing identical VZ, IZT, ZZT, and IZM specifications. However, SMBG5348B/TR13 uses a DO-215AA gull-wing package versus the axial T-18 package of 1N5348B, so PCB layout and assembly processes must be updated. SMBG5348B/TR13 is not a drop-in mechanical replacement but is a functional upgrade for SMT migration.
What is the maximum power dissipation of SMBG5348B/TR13 at 70 °C ambient?
At 70 °C ambient temperature on an FR4 board with 1 oz copper and recommended footprint, SMBG5348B/TR13's maximum power dissipation is approximately 2.7 W. This is derived from its RθJA of 90 °C/W and the 150 °C max junction temperature: PD = (TJmax – TA) / RθJA = (150 – 70) / 90 ≈ 0.89 W - but the datasheet specifies 5.0 W at TL < 25 °C and 1.38 W at TA = 25 °C, with linear derating above 25 °C. At 70 °C TA, SMBG5348B/TR13 delivers ~1.38 W × (1 – (70–25)/125) = ~1.0 W continuous; however, lead-temperature-limited operation allows up to 2.7 W if TL is maintained ≤ 25 °C via heatsinking.
Is SMBG5348B/TR13 RoHS compliant?
Yes, SMBG5348B/TR13 is RoHS compliant, using annealed matte-tin plating per the "e3" RoHS designation in Microsemi's nomenclature. The "TR13" suffix indicates tape-and-reel packaging per EIA-481-1-A, and the device meets all substance restrictions under Directive 2011/65/EU. No exemptions are required, and the part carries full RoHS certification documentation from Microsemi (now Microchip).
What is the reverse leakage current of SMBG5348B/TR13 at 8.0 V?
The SMBG5348B/TR13 exhibits a maximum reverse leakage current (IR) of 5.0 µA when biased at 8.0 V, which is its specified IR test voltage (VR) for B-suffix parts. This low leakage ensures minimal quiescent current draw in high-impedance reference or bias networks, preserving battery life in portable systems and reducing error in precision analog circuits where leakage could shift operating points.
SMBG5348B/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:
- ±5%
- 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)
SMBG5348B/TR13 FAQ
1.How can I place an order for SMBG5348B/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5348B/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 SMBG5348B/TR13 reliable?
The price and inventory of SMBG5348B/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5348B/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5348B/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5348B/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5348B/TR13?
SMBG5348B/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5348B/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 SMBG5348B/TR13?
For technical support, including SMBG5348B/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5348B/TR13 requirements.
6.How does Aetrix verify that SMBG5348B/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5348B/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 SMBG5348B/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5348B/TR13?
All SMBG5348B/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5348B/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 SMBG5348B/TR13 part is unused and in its original packaging.
Return procedure for SMBG5348B/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5348B/TR13 Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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