My Inquiry
My Account
Microchip Technology SMBG5343AE3/TR13
- Part No.:
- SMBG5343AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5343AE3/TR13.pdf
- Description:
- DIODE ZENER 7.5V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,669
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBG5343AE3/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 7.5 V, ±10% tolerance (A suffix), 175 mA test current (IZT), 1.5 Ω dynamic impedance (ZZT), and DO-215AA gull-wing package. It regulates voltage in power supply feedback loops, overvoltage clamping circuits, and reference voltage generation under broad temperature and current conditions.
For engineers reviewing the SMBG5343AE3/TR13 datasheet, SMBG5343AE3/TR13 pinout, SMBG5343AE3/TR13 application, or SMBG5343AE3/TR13 equivalent, this part delivers verified 7.5 V regulation at 175 mA with low dynamic impedance, RoHS-compliant matte-tin plating, and JEDEC 1N5343B-equivalent electrical behavior in a visible-solder gull-wing footprint.
Technical Context
This device operates as a precision voltage reference in reverse-biased breakdown mode, maintaining stable 7.5 V output across 10 mA to 630 mA operating current (IZM = 630 mA) with minimal voltage drift versus current. Its 1.5 Ω dynamic impedance ensures tight regulation under dynamic load transients.
The SMBG5343AE3/TR13 uses thermoset epoxy encapsulation (UL94V-0), achieves IPC/JEDEC J-STD-020B moisture sensitivity Level 1 (no dry pack required), and withstands 260 °C soldering for 10 s - enabling reliable reflow assembly in high-density PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.5 V ±10% at 175 mA - defines regulated output level with guaranteed min/max bounds for feedback accuracy. |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - supports continuous operation with adequate heatsinking on lead frame. |
| Dynamic Impedance (ZZT) | 1.5 Ω at 175 mA - ensures ≤113 mV voltage shift for ±100 mA load change, critical for stable references. |
| Max Regulator Current (IZM) | 630 mA - sets absolute DC current limit before thermal runaway; derived from P/VZM = 5 W / 8.25 V. |
| Reverse Leakage (IR) | 10 µA max at 5.4 V - confirms low off-state power loss in clamping applications below breakdown. |
| Junction Temp Range | –65 °C to +150 °C - enables deployment in automotive under-hood and industrial control environments. |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - allows direct thermal path to PCB copper, supporting high-power pulse handling. |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode band marking; terminals are anode (unbanded end) and cathode (banded end); polarity must be observed for correct reverse-bias operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reference ground node | Connected to circuit ground or lower-potential rail; forms return path during Zener conduction. |
| Cathode | Zener breakdown terminal / Regulated output node | Connected to voltage node requiring stabilization; supplies regulated 7.5 V when reverse biased above VZ. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5343B equivalence | Identical electrical specs and test methods - enables drop-in replacement without redesign or qualification retesting. |
| RoHS-compliant matte-tin plating | e3 suffix confirms lead-free termination meeting IPC-J-STD-006B - supports global environmental compliance without solderability penalty. |
| Gull-wing lead geometry | Visible solder joints per DO-215AA - enables automated optical inspection (AOI) and eliminates hidden void risks in J-bend packages. |
| Level 1 moisture sensitivity | No dry pack or baking required before reflow - reduces manufacturing overhead and prevents moisture-induced popcorning. |
| High surge current rating | 10.7 A non-repetitive 8.3 ms half-sine - protects downstream circuitry against transient overvoltages without external TVS. |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Reference Voltage |
|---|---|
Use Scenario: Stabilizing error amplifier input in isolated flyback or forward converter feedback networks. IC Role / Device Role / Timing Role: Zener reference providing precise 7.5 V bias to optocoupler LED or TL431 cathode. Use Value: Maintains ±10% output regulation across line/load/temperature with 1.5 Ω dynamic impedance minimizing feedback loop gain variation. |
Use Scenario: Generating stable excitation voltage for resistive bridge sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Low-drift voltage reference sourcing 1–5 mA to Wheatstone bridge arms. Use Value: Delivers 7.5 V ±10% with <10 µA leakage at 5.4 V, ensuring sensor offset stability and ADC measurement repeatability. |
| Overvoltage Clamp for MCU I/O | Automotive Body Control Module Protection |
Use Scenario: Clamping 12 V automotive I/O lines to protect 5 V logic inputs from load-dump transients. IC Role / Device Role / Timing Role: Fast-acting shunt clamp diverting surge current away from ESD diodes or GPIO pins. Use Value: Withstands 10.7 A 8.3 ms surges while holding clamped voltage ≤8.25 V - within safe margin of 5 V rail tolerance. |
Use Scenario: Regulating auxiliary 7.5 V rail for LIN transceivers and EEPROM in BCM subassemblies. IC Role / Device Role / Timing Role: Primary voltage regulator supplying clean, temperature-stable bias to communication ICs. Use Value: Operates continuously from –40 °C to +125 °C with <5.1 mV/°C tempco, ensuring LIN bus timing integrity across ambient extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5343BRLG | Axial-leaded T-18 package; identical 7.5 V ±10%, 175 mA IZT, 1.5 Ω ZZT, but higher RθJA (150 °C/W vs. 90 °C/W). | Requires through-hole mounting and larger board area; unsuitable for high-density SMT designs. | Select only when legacy through-hole assembly or manual repair is required; not recommended for new SMT designs. |
| SMBJ5343B | DO-214AA J-bend package; same electrical specs but 3.5 Ω ZZT (vs. 1.5 Ω) and 550 mA IZM (vs. 630 mA). | Higher dynamic impedance increases output ripple sensitivity; lower IZM limits peak surge capability. | Acceptable for cost-sensitive, non-critical clamping where 1.5 Ω regulation is not required. |
Compared with 1N5343BRLG and SMBJ5343B, SMBG5343AE3/TR13 provides superior thermal performance (RθJL = 25 °C/W), lowest dynamic impedance in its family, and gull-wing visibility for AOI - making it optimal for high-reliability SMT power regulation.
Availability
SMBG5343AE3/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor interfaces, and automotive body control modules requiring stable component supply with full RoHS compliance and traceable sourcing.
Supply support for SMBG5343AE3/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 (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, RF, and timing solutions for aerospace, defense, and industrial markets.
The SMBG53xx series was designed specifically for surface-mount voltage regulation in space-constrained, high-surge industrial and automotive systems - delivering JEDEC-standard Zener performance in a gull-wing DO-215AA package.
FAQ
What is the Zener voltage tolerance for SMBG5343AE3/TR13?
The 'A' suffix in SMBG5343AE3/TR13 specifies ±10% Zener voltage tolerance, meaning the actual VZ falls between 6.75 V and 8.25 V when measured at 175 mA and TL = 25 °C. This tolerance is confirmed in the Electrical Characteristics table on page 3 of the T4-LDS-0246-1 datasheet.
Is SMBG5343AE3/TR13 RoHS compliant?
Yes, SMBG5343AE3/TR13 is RoHS compliant, as indicated by the 'e3' suffix in the part number. The device uses annealed matte-tin plating per MIL-STD-750 method 2026 and meets EU Directive 2011/65/EU requirements without lead or other restricted substances.
What is the maximum continuous Zener current for SMBG5343AE3/TR13?
The maximum continuous Zener current (IZM) for SMBG5343AE3/TR13 is 630 mA, calculated per Note 3 on page 3 of the datasheet using IZM = P/VZM = 5.0 W / 8.25 V. This value assumes proper thermal management with TL < 25 °C.
Does SMBG5343AE3/TR13 have a specified surge current rating?
Yes, SMBG5343AE3/TR13 has a non-repetitive peak surge current (IZSM) rating of 10.7 A for an 8.3 ms half-sine waveform, as listed in the Electrical Characteristics table. This enables robust protection against load-dump and inductive switching transients.
What package type does SMBG5343AE3/TR13 use?
SMBG5343AE3/TR13 uses the DO-215AA gull-wing surface-mount package, defined in the Mechanical and Packaging section. Its dimensions (A = 1.96–2.10 mm, B = 4.06–4.57 mm) and pad layout are detailed on page 5 of the datasheet.
SMBG5343AE3/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):
- 7.5 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 1.5 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 5.4 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)
SMBG5343AE3/TR13 FAQ
1.How can I place an order for SMBG5343AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5343AE3/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 SMBG5343AE3/TR13 reliable?
The price and inventory of SMBG5343AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5343AE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5343AE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5343AE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5343AE3/TR13?
SMBG5343AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5343AE3/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 SMBG5343AE3/TR13?
For technical support, including SMBG5343AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5343AE3/TR13 requirements.
6.How does Aetrix verify that SMBG5343AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5343AE3/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 SMBG5343AE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5343AE3/TR13?
All SMBG5343AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5343AE3/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 SMBG5343AE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5343AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5343AE3/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…
