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Microchip Technology SMBG5348AE3/TR13
- Part No.:
- SMBG5348AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5348AE3/TR13.pdf
- Description:
- DIODE ZENER 11V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,020
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Product details
Overview
SMBG5348AE3/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal breakdown voltage of 11 V, ±10% tolerance (A suffix), RoHS-compliant matte-tin plating (e3), and DO-215AA gull-wing package. It delivers stable voltage regulation in power supply overvoltage protection and reference circuits across industrial temperature range.
For engineers reviewing the SMBG5348AE3/TR13 datasheet, SMBG5348AE3/TR13 pinout, SMBG5348AE3/TR13 application, or SMBG5348AE3/TR13 equivalent, key selection criteria include Zener voltage tolerance, surge current rating (8.0 A), thermal resistance (90 °C/W on FR4), and moisture sensitivity level (MSL 1).
Technical Context
This device operates in reverse-biased breakdown mode to maintain a stable reference voltage under varying load and temperature conditions. Its dynamic impedance is 2.5 Ω at 125 mA test current (IZT), and it exhibits low leakage (<5 µA) at 8.0 V reverse bias.
The SMBG5348AE3/TR13 is rated for 5.0 W dissipation at lead temperature <25 °C, derating linearly above that point per Figure 1. It withstands non-repetitive 8.3 ms half-sine surge currents up to 8.0 A and meets MIL-STD-750 ESD robustness requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11 V ±10% - defines regulated output voltage window (9.9–12.1 V) at 125 mA test current |
| Power Dissipation (PD) | 5.0 W @ TL < 25 °C - requires thermal management when mounted on FR4 with recommended footprint |
| Max Regulator Current (IZM) | 430 mA - maximum continuous DC current before exceeding 5 W rating at high-end VZ |
| Dynamic Impedance (ZZT) | 2.5 Ω @ 125 mA - determines voltage variation under load transients; lower value improves regulation stability |
| Reverse Leakage (IR) | <5 µA @ 8.0 V - ensures minimal standby power loss in high-impedance bias networks |
| Surge Current (IZSM) | 8.0 A (8.3 ms half-sine) - supports transient overvoltage clamping without failure |
| Junction Temp Range | –65 to +150 °C - enables operation in extended industrial and automotive under-hood environments |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band; anode and cathode terminals are accessible via two gull-wing leads. Moisture sensitivity level is MSL 1 - no dry pack required prior to reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Breakdown terminal | Connected to higher potential node; reverse-biased to initiate Zener conduction |
| Anode | Reference terminal | Connected to circuit ground or lower-potential rail; completes bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5348B equivalent | Identical electrical specs and test methods - enables drop-in replacement in legacy designs |
| Gull-wing lead form | Enables visual solder joint inspection and reliable reflow attachment on high-density PCBs |
| RoHS-compliant matte-tin finish (e3) | Meets global environmental compliance without sacrificing solderability or reliability |
| MSL Level 1 rating | Eliminates baking requirement before assembly - reduces manufacturing cost and cycle time |
| High surge current capability | Withstands 8.0 A transient surges - suitable for input-stage overvoltage protection in DC supplies |
Applications
| DC Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stabilizing reference voltage for feedback loop in 12 V offline AC/DC adapter. IC Role / Device Role / Timing Role: Zener diode provides precision shunt reference for TL431 or optocoupler bias network. Use Value: Maintains ±10% output regulation across line/load variations and –40 to +85 °C ambient, leveraging 2.5 Ω dynamic impedance and 125 mA IZT. | Use Scenario: Clamping transient spikes on 12 V automotive body control module input rail. IC Role / Device Role / Timing Role: Shunt limiter activated during load dump or ISO 7637-2 pulse 5a events. Use Value: Absorbs 8.0 A surge (8.3 ms) without degradation, protecting downstream LDOs and microcontrollers. |
| Voltage Reference for Analog Sensors | ESD-Safe Bias Network |
Use Scenario: Providing stable 11 V excitation for strain gauge bridge in industrial weighing system. IC Role / Device Role / Timing Role: Low-drift Zener reference source for ratiometric measurement front-end. Use Value: Delivers <5 µA leakage at 8.0 V and minimal voltage drift vs. temperature - critical for 16-bit ADC accuracy. | Use Scenario: Biasing high-impedance input of RS-485 transceiver in factory automation node. IC Role / Device Role / Timing Role: ESD-robust voltage clamp on bus termination network. Use Value: Non-sensitive to ESD per MIL-STD-750 Method 1020 - prevents latch-up or parametric shift during handling and field operation. |
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 electrical specs, axial-leaded T-18 package instead of DO-215AA surface mount | Requires through-hole assembly; unsuitable for automated SMT lines or low-profile designs | Select when legacy through-hole compatibility or manual prototyping is prioritized over density and reflow process |
| SMBJ5348B | Identical Zener voltage and tolerance, but J-bend DO-214AA package with higher RθJA (100 °C/W) | Lower thermal performance on same PCB; reduced surge margin under sustained power | Select only if DO-214AA footprint is already committed and thermal headroom exceeds 1.5 W at 70 °C ambient |
Compared with SMBG5348AE3/TR13, 1N5348B offers identical regulation but mandates through-hole assembly, while SMBJ5348B fits SMT processes but sacrifices thermal efficiency and surge endurance due to higher junction-to-ambient resistance.
Availability
SMBG5348AE3/TR13 is available at Aetrix Electronics and suitable for DC power supply regulation, overvoltage protection circuits, and voltage reference applications requiring stable component supply, full RoHS compliance, and MSL 1 handling.
Supply support for SMBG5348AE3/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 specifically for surface-mount voltage regulation and transient suppression in space-constrained, thermally demanding power systems where JEDEC-compatibility and MSL 1 handling are mandatory.
FAQ
What is the Zener voltage tolerance of SMBG5348AE3/TR13?
The SMBG5348AE3/TR13 has a Zener voltage tolerance of ±10%, denoted by the "A" suffix in the part number. This means its breakdown voltage is specified as 11 V ±10%, resulting in a guaranteed range of 9.9 V to 12.1 V when measured at 125 mA test current and 25 °C. The tolerance directly impacts regulation accuracy in reference and protection circuits.
Is SMBG5348AE3/TR13 RoHS compliant?
Yes, SMBG5348AE3/TR13 is RoHS compliant, as confirmed by the "e3" suffix in the part number. It features annealed matte-tin plating per J-STD-006 and meets all substance restrictions under Directive 2011/65/EU. The device is also MSL Level 1, eliminating the need for dry packing prior to reflow soldering.
What is the maximum surge current rating for SMBG5348AE3/TR13?
The SMBG5348AE3/TR13 is rated for a non-repetitive peak surge current (IZSM) of 8.0 A, defined as a single 8.3 ms half-sine waveform. This rating enables reliable clamping of transient overvoltages in DC power rails, such as those encountered during load dump in automotive systems or switching noise in industrial SMPS.
How does the thermal resistance of SMBG5348AE3/TR13 affect its power handling?
SMBG5348AE3/TR13 has a junction-to-ambient thermal resistance (RθJA) of 90 °C/W when mounted on an FR4 board with 1 oz copper and the recommended pad layout. At 25 °C ambient, this limits continuous power dissipation to ~1.38 W unless heatsinking or forced air cooling is applied - the full 5.0 W rating applies only when lead temperature remains below 25 °C.
Can SMBG5348AE3/TR13 replace 1N5348B in existing designs?
Yes, SMBG5348AE3/TR13 is functionally and electrically equivalent to 1N5348B per Microsemi documentation, with identical Zener voltage, tolerance, dynamic impedance, and surge ratings. However, the SMBG5348AE3/TR13 uses a DO-215AA gull-wing package versus the axial T-18 of 1N5348B - board layout and assembly process must be updated accordingly.
SMBG5348AE3/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)
SMBG5348AE3/TR13 FAQ
1.How can I place an order for SMBG5348AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5348AE3/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 SMBG5348AE3/TR13 reliable?
The price and inventory of SMBG5348AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5348AE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5348AE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5348AE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5348AE3/TR13?
SMBG5348AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5348AE3/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 SMBG5348AE3/TR13?
For technical support, including SMBG5348AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5348AE3/TR13 requirements.
6.How does Aetrix verify that SMBG5348AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5348AE3/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 SMBG5348AE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5348AE3/TR13?
All SMBG5348AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5348AE3/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 SMBG5348AE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5348AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5348AE3/TR13 Tags
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