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Microchip Technology SMBG5345AE3/TR13
- Part No.:
- SMBG5345AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5345AE3/TR13.pdf
- Description:
- DIODE ZENER 8.7V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,747
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Product details
Overview
SMBG5345AE3/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal breakdown voltage of 8.7 V ±10%, designed for precision voltage regulation in power supply rails and overvoltage protection circuits. It features 2.0 Ω dynamic impedance at 150 mA test current, 10 µA maximum reverse leakage at 6.25 V, and operates across –65 °C to +150 °C junction temperature range.
For engineers reviewing the SMBG5345AE3/TR13 datasheet, SMBG5345AE3/TR13 pinout, SMBG5345AE3/TR13 application, or SMBG5345AE3/TR13 equivalent, this part serves as a RoHS-compliant, gull-wing DO-215AA packaged Zener for stable DC reference generation, transient suppression, and voltage clamping where ±10% tolerance and visible solder joints are acceptable.
Technical Context
This device functions as a two-terminal silicon Zener diode operating in reverse breakdown mode, delivering regulated voltage across its cathode–anode terminals under controlled current conditions. Its 8.7 V nominal Zener voltage is specified at IZT = 150 mA with 2.0 Ω dynamic impedance (ZZT) and 10 µA reverse leakage (IR) at VR = 6.25 V.
Thermal performance is defined by RθJL = 25 °C/W (junction-to-lead) and RθJA = 90 °C/W (junction-to-ambient on FR4), supporting 5.0 W dissipation only when lead temperature (TL) remains ≤25 °C. The DO-215AA gull-wing package enables optical solder inspection and meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.7 V ±10% at IZT = 150 mA - defines stable regulation point for biasing or clamping circuits |
| Power Dissipation (PD) | 5.0 W at TL ≤25 °C - requires thermal management via PCB copper or heatsinking to sustain full rating |
| Dynamic Impedance (ZZT) | 2.0 Ω at IZT = 150 mA - low impedance ensures minimal voltage shift under load current variation |
| Reverse Leakage (IR) | 10 µA max at VR = 6.25 V - confirms tight regulation margin below breakdown threshold |
| Max Regulator Current (IZM) | 545 mA - derived from PD/VZM, sets absolute DC current limit before thermal runaway |
| Junction Temperature Range | –65 °C to +150 °C - supports operation in automotive engine compartments and industrial control enclosures |
| Surge Current (IZSM) | 9.5 A (8.3 ms half-sine) - withstands short-duration transients without degradation |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band; anode and cathode terminals are accessible via visible solder joints on PCB pads per recommended footprint (A = 8.13 mm, B = 2.16 mm, C = 2.79 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node in Zener regulator configuration | Connected to system ground or lower-potential rail; reverse-biased relative to cathode during regulation |
| Cathode | Regulated output node in Zener regulator configuration | Banded end; supplies stable 8.7 V reference or clamps voltage spikes to protect downstream circuitry |
Key Features
| Feature | Design Value |
|---|---|
| RoHS-compliant matte-tin plating | e3 suffix indicates lead-free termination compatible with Pb-free reflow profiles and environmental compliance requirements |
| Gull-wing lead form (DO-215AA) | Enables visual solder joint inspection and reduces tombstoning risk during SMT assembly |
| Level 1 moisture sensitivity | No dry pack required - simplifies handling, storage, and assembly logistics |
| JEDEC 1N5345B equivalent | Guarantees identical electrical characteristics and test methods to legacy through-hole counterpart |
| High surge current capability | 9.5 A non-repetitive peak withstands ESD and lightning-induced transients in power input stages |
Applications
| DC Power Supply Regulation | Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing 9 V rail in low-power analog sensor interface boards where cost and board space constrain use of active regulators. IC Role / Device Role / Timing Role: Two-terminal passive voltage reference providing fixed 8.7 V clamp against supply fluctuations. Use Value: Maintains ADC reference stability within ±10% tolerance while dissipating up to 5 W under overload, eliminating need for external feedback loop. |
Use Scenario: Protecting microcontroller I/O pins from 12 V automotive battery surges during load dump events. IC Role / Device Role / Timing Role: Cathode-connected to protected line, anode to ground - clamps transient above 8.7 V to safe levels. Use Value: Absorbs 9.5 A surge energy (8.3 ms) without failure, preserving signal integrity and preventing latch-up in connected logic. |
| Industrial Sensor Biasing | Reference Voltage Generation |
Use Scenario: Providing excitation voltage to resistive temperature detectors (RTDs) in factory-floor PLC modules operating at 70 °C ambient. IC Role / Device Role / Timing Role: Zener diode biased at 150 mA to deliver stable 8.7 V excitation independent of input rail variation. Use Value: Delivers <2.0 Ω dynamic impedance to minimize measurement error from current draw changes, validated across –65 °C to +150 °C. |
Use Scenario: Generating precise 8.7 V reference for comparator thresholds in battery-management system (BMS) cell-voltage monitoring. IC Role / Device Role / Timing Role: Passive reference source feeding high-impedance comparator input with minimal loading effect. Use Value: 10 µA reverse leakage at 6.25 V ensures negligible current diversion, preserving accuracy of low-current sensing paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5345B | Identical electrical specs but axial T-18 package; no RoHS compliance (Sn/Pb plating) | Requires through-hole assembly and dry-pack handling; unsuitable for high-density SMT layouts | Select when legacy repair, manual prototyping, or compatibility with existing T-18 footprints is required |
| SMBJ5345B | Same Zener voltage and tolerance, but DO-214AA J-bend package; RθJA = 100 °C/W vs. 90 °C/W | Lower thermal efficiency on FR4; reduced surge current rating (8.6 A vs. 9.5 A) | Choose when DO-214AA footprint is standardized and marginal thermal margin is acceptable |
Compared with SMBG5345AE3/TR13, 1N5345B offers identical regulation but lacks SMT compatibility and RoHS compliance, while SMBJ5345B trades thermal performance and surge robustness for alternate gull-wing geometry - making SMBG5345AE3/TR13 optimal for high-reliability, lead-free production requiring visible solder joints and maximum transient immunity.
Availability
SMBG5345AE3/TR13 is available at Aetrix Electronics and suitable for DC power supply regulation, overvoltage protection, and industrial sensor biasing requiring stable component supply, RoHS compliance, and gull-wing SMT manufacturability.
Supply support for SMBG5345AE3/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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The SMBG53xx series targets surface-mount voltage regulation and transient suppression in space-constrained, thermally demanding environments where JEDEC-compatibility and visual process control are critical.
FAQ
What is the Zener voltage tolerance of SMBG5345AE3/TR13?
The SMBG5345AE3/TR13 has a Zener voltage tolerance of ±10%, meaning its breakdown voltage is guaranteed between 7.83 V and 9.57 V at IZT = 150 mA and TL = 25 °C. This tolerance is encoded by the "A" suffix in the part number and applies across the full operating temperature range of –65 °C to +150 °C.
Does SMBG5345AE3/TR13 require dry packing before reflow soldering?
No, SMBG5345AE3/TR13 does not require dry packing because it carries IPC/JEDEC J-STD-020B moisture sensitivity level 1. Its plastic encapsulation and void-free epoxy body eliminate moisture absorption concerns, allowing standard handling, storage, and reflow without baking or humidity-controlled packaging.
What is the maximum continuous current SMBG5345AE3/TR13 can handle?
The SMBG5345AE3/TR13 supports a maximum continuous Zener current (IZM) of 545 mA when operated at TL ≤25 °C. This value is calculated as PD/VZM = 5.0 W / 9.57 V and assumes adequate thermal conduction from leads to PCB copper; derating is required above 25 °C lead temperature.
How does SMBG5345AE3/TR13 compare to the 1N5345B in terms of electrical performance?
SMBG5345AE3/TR13 matches the 1N5345B's electrical specifications exactly - including VZ = 8.7 V ±10%, ZZT = 2.0 Ω, and IR = 10 µA - as confirmed by Microsemi's documentation stating equivalence to JEDEC 1N5333–1N5388B series. The difference lies solely in package (DO-215AA vs. T-18) and RoHS compliance (e3 vs. Sn/Pb).
What is the surge current rating of SMBG5345AE3/TR13 and how is it defined?
The SMBG5345AE3/TR13 has a non-repetitive peak surge current (IZSM) rating of 9.5 A, defined as the maximum amplitude of an 8.3 ms half-sine waveform. This rating reflects its ability to absorb transient energy without parametric shift or catastrophic failure, making it suitable for automotive load-dump and industrial surge protection applications.
SMBG5345AE3/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):
- 8.7 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 6.25 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)
SMBG5345AE3/TR13 FAQ
1.How can I place an order for SMBG5345AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5345AE3/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 SMBG5345AE3/TR13 reliable?
The price and inventory of SMBG5345AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5345AE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5345AE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5345AE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5345AE3/TR13?
SMBG5345AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5345AE3/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 SMBG5345AE3/TR13?
For technical support, including SMBG5345AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5345AE3/TR13 requirements.
6.How does Aetrix verify that SMBG5345AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5345AE3/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 SMBG5345AE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5345AE3/TR13?
All SMBG5345AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5345AE3/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 SMBG5345AE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5345AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5345AE3/TR13 Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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SMAJ4744A-TP
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SMAZ12-13-F
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