My Inquiry
My Account
Microchip Technology SMBG5348C/TR13
- Part No.:
- SMBG5348C/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5348C/TR13.pdf
- Description:
- DIODE ZENER 11V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,463
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBG5348C/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 11 V, ±2% tolerance (C suffix), 2.5 Ω dynamic impedance at 125 mA test current, and maximum regulator current of 430 mA. It operates across –65 °C to +150 °C junction temperature and is used for precision voltage regulation in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the SMBG5348C/TR13 datasheet, SMBG5348C/TR13 pinout, SMBG5348C/TR13 application, or SMBG5348C/TR13 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (RθJL = 25 °C/W), surge current rating (8.0 A), moisture sensitivity level (MSL Level 1), and RoHS-compliant matte-tin plating.
Technical Context
This device functions as a two-terminal voltage reference diode operating in reverse breakdown, with cathode band marking polarity. Its Zener voltage is specified at IZT = 125 mA and TL = 30 °C, with dynamic impedance measured using 1 kHz AC modulation at 10% of IZT.
The SMBG5348C/TR13 uses a DO-215AA gull-wing package with void-free UL94V-0 epoxy body and annealed matte-tin terminals. It achieves MSL Level 1 per IPC/JEDEC J-STD-020B, eliminating dry-pack requirements, and withstands 260 °C soldering for 10 s.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11 V ±2% - precise regulation point at 125 mA, enabling stable feedback in SMPS error amplifiers. |
| Power Dissipation (PD) | 5.0 W @ TL < 25 °C - supports high-current regulation without forced cooling when lead-temperature controlled. |
| Dynamic Impedance (ZZT) | 2.5 Ω @ 125 mA - low AC impedance ensures minimal output voltage variation under load transients. |
| Max Regulator Current (IZM) | 430 mA - defines absolute DC current limit before thermal runaway under rated power conditions. |
| Surge Current (IZSM) | 8.0 A (8.3 ms half-sine) - enables transient overvoltage clamping during line surges or inductive kick events. |
| Thermal Resistance (RθJL) | 25 °C/W - allows direct thermal path to PCB copper, supporting reliable operation with minimal heatsinking. |
| Reverse Leakage (IR) | 5.0 µA @ 8.0 V - confirms tight regulation knee and low standby loss in low-power monitoring circuits. |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by a band on the body. Terminals are tin-plated for RoHS compliance and solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or return path; establishes reference potential for Zener conduction. |
| Cathode | Regulated output node | Banded end; supplies stabilized 11 V to feedback networks or clamp circuits when reverse-biased. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5348B equivalent | Identical electrical specs and test methods to legacy through-hole 1N5348B, enabling drop-in replacement in upgraded layouts. |
| MSL Level 1 rating | No dry-pack required - simplifies SMT handling, storage, and reflow scheduling without baking delays. |
| Gull-wing lead form | Visible solder joints enable automated optical inspection (AOI) and reduce tombstoning risk on fine-pitch boards. |
| ±2% voltage tolerance (C suffix) | Enables tighter regulation than ±5% (B) or ±10% (A) variants, critical for precision feedback in telecom power modules. |
| Non-ESD-sensitive design | Qualified per MIL-STD-750 Method 1020 - eliminates need for ESD handling protocols during assembly and test. |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Zener reference element setting precise 11 V threshold for TL431-type shunt regulator biasing. Use Value: ±2% tolerance ensures <±0.22 V output deviation, maintaining tight regulation across line/load/temperature. |
Use Scenario: Clamping transient spikes on 12 V automotive control bus lines exposed to load-dump events. IC Role / Device Role / Timing Role: Two-terminal passive clamp absorbing 8.0 A surge energy for 8.3 ms without failure. Use Value: 5 W power rating and 25 °C/W RθJL allow sustained clamping without thermal derating on standard FR4. |
| Industrial Sensor Signal Conditioning | Programmable Logic Controller (PLC) Input Protection |
Use Scenario: Providing stable 11 V reference for analog front-end ADC biasing in 4–20 mA loop-powered sensors. IC Role / Device Role / Timing Role: Precision voltage reference stabilizing op-amp rail-splitting network under varying ambient temperatures. Use Value: –65 °C to +150 °C operating range ensures reliability in unheated outdoor enclosures and factory floors. |
Use Scenario: Protecting 24 V digital input channels against ESD and fast-rising transients per IEC 61000-4-2/4-4. IC Role / Device Role / Timing Role: Low-impedance shunt path diverting >8 kV contact discharge energy away from FPGA I/O pins. Use Value: 2.5 Ω ZZT minimizes clamping voltage overshoot, keeping protected node below 12.5 V during surge. |
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 11 V ±2% VZ, but axial DO-204AL (T-18) package; higher RθJA (125 °C/W) limits power handling in SMT designs. | Requires through-hole assembly; unsuitable for high-density PCBs or automated reflow processes. | Select only for legacy repair, prototyping with breadboards, or where axial mounting is mandated. |
| SMBJ5348C | Identical electrical specs and DO-214AA (J-bend) package; RθJA = 90 °C/W vs. SMBG5348C/TR13's 90 °C/W, but different lead geometry affects solder joint inspection. | Compatible with same footprint class but requires revised stencil and AOI setup due to J-bend vs. gull-wing profile. | Choose when existing design uses DO-214AA or when gull-wing inspection capability is unavailable. |
Compared with 1N5348B and SMBJ5348C, SMBG5348C/TR13 offers superior manufacturability in high-volume SMT lines due to its gull-wing leads enabling AOI validation, while maintaining identical regulation performance and thermal robustness on FR4.
Availability
SMBG5348C/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor interfaces, automotive clamp circuits, and PLC input protection requiring stable component supply and RoHS-compliant sourcing.
Supply support for SMBG5348C/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 to provide JEDEC-registered Zener performance in surface-mount gull-wing packages for high-density power regulation and protection in mission-critical systems.
FAQ
What is the Zener voltage tolerance of SMBG5348C/TR13?
The "C" suffix in SMBG5348C/TR13 denotes a ±2% Zener voltage tolerance, meaning the actual VZ falls between 10.78 V and 11.22 V when measured at IZT = 125 mA and TL = 30 °C. This tighter tolerance supports precision regulation where ±5% (B suffix) would introduce unacceptable output drift in feedback networks.
Does SMBG5348C/TR13 require dry packing before reflow soldering?
No, SMBG5348C/TR13 has a moisture sensitivity level (MSL) of Level 1 per IPC/JEDEC J-STD-020B, meaning it may be stored indefinitely at ≤30 °C/60% RH without dry packing. This eliminates baking steps prior to reflow, reducing process complexity and cost in high-volume manufacturing.
What is the maximum surge current rating for SMBG5348C/TR13?
SMBG5348C/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 enables robust clamping of load-dump transients in 12 V automotive systems and inductive switching spikes in industrial motor drives without degradation.
How does the DO-215AA package of SMBG5348C/TR13 differ from DO-214AA?
The DO-215AA gull-wing package of SMBG5348C/TR13 features outward-bent leads enabling visual solder joint inspection, whereas DO-214AA (used in SMBJ5348C) has J-bend leads that hide solder fillets. Both share identical thermal resistance (RθJA = 90 °C/W on FR4), but DO-215AA improves process yield in AOI-equipped lines.
Is SMBG5348C/TR13 compatible with lead-free reflow profiles?
Yes, SMBG5348C/TR13 uses RoHS-compliant annealed matte-tin plating and is qualified for soldering at 260 °C for 10 seconds - fully compatible with standard lead-free reflow profiles (e.g., JEDEC J-STD-020). Its UL94V-0 epoxy body remains stable under peak temperatures up to 260 °C.
SMBG5348C/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:
- ±2%
- 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)
SMBG5348C/TR13 FAQ
1.How can I place an order for SMBG5348C/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5348C/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 SMBG5348C/TR13 reliable?
The price and inventory of SMBG5348C/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5348C/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5348C/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5348C/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5348C/TR13?
SMBG5348C/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5348C/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 SMBG5348C/TR13?
For technical support, including SMBG5348C/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5348C/TR13 requirements.
6.How does Aetrix verify that SMBG5348C/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5348C/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 SMBG5348C/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5348C/TR13?
All SMBG5348C/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5348C/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 SMBG5348C/TR13 part is unused and in its original packaging.
Return procedure for SMBG5348C/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5348C/TR13 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
