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Microchip Technology SMBG5345CE3/TR13
- Part No.:
- SMBG5345CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5345CE3/TR13.pdf
- Description:
- DIODE ZENER 8.7V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,384
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Product details
Overview
SMBG5345CE3/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 8.7 V, ±2% tolerance (C suffix), and DO-215AA gull-wing package. It regulates voltage across wide current and temperature ranges, supports surge currents up to 545 A (8.3 ms half-sine), and is used in power supply overvoltage protection and reference circuits.
For engineers reviewing the SMBG5345CE3/TR13 datasheet, SMBG5345CE3/TR13 pinout, SMBG5345CE3/TR13 application, or SMBG5345CE3/TR13 equivalent, this page delivers verified electrical parameters, thermal behavior, JEDEC-compliant packaging details, and RoHS-compliant construction for reliable high-density board design and voltage stabilization.
Technical Context
This device operates as a precision voltage regulator in reverse-biased breakdown mode, with dynamic impedance of 2.0 Ω at 150 mA test current (IZT) and knee impedance of 500 Ω at 1.0 mA. Its thermal resistance junction-to-lead is 25 °C/W, enabling stable regulation under sustained 5 W dissipation when lead-temperature limited to 25 °C.
The SMBG5345CE3/TR13 features cathode band polarity marking, moisture sensitivity level 1 per J-STD-020B (no dry pack required), and RoHS-compliant matte-tin plating. It withstands 260 °C soldering for 10 s and exhibits minimal voltage drift versus current due to low dynamic impedance and tight ±2% VZ tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.7 V ±2% at 150 mA - ensures precise clamping within 0.174 V tolerance for stable reference or protection thresholds. |
| Power Dissipation (PD) | 5.0 W @ TL < 25 °C - supports continuous regulation in thermally managed PCB layouts with adequate copper pour. |
| Dynamic Impedance (ZZT) | 2.0 Ω at IZT = 150 mA - minimizes output voltage variation under load transients in feedback or sensing paths. |
| Max Surge Current (IZSM) | 545 A (8.3 ms half-sine) - provides robust transient overvoltage suppression without failure in surge-prone inputs. |
| Thermal Resistance (RθJL) | 25 °C/W - enables predictable junction temperature rise when mounted on FR4 with recommended pad layout. |
| Reverse Leakage (IR) | 10 µA @ VR = 6.25 V - guarantees low standby power loss in high-impedance bias or monitoring circuits. |
| Junction Temp Range | –65 to +150 °C - supports operation in industrial and automotive under-hood environments. |
Pinout & Package
DO-215AA gull-wing surface-mount package with two terminals: anode and cathode. Cathode identified by molded band; device operated with banded end positive relative to anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; reference node in reverse-bias regulation | Connected to lower-potential rail (e.g., ground or return path) during Zener operation. |
| Cathode | Current exit terminal in forward bias; regulated output node in reverse bias | Connected to protected or referenced node; voltage clamped to 8.7 V ±2% above anode potential. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N53xxB equivalent | Identical electrical specs and test methods to legacy through-hole 1N5345B - simplifies migration to surface mount. |
| Gull-wing lead form | Visible solder joints enable automated optical inspection (AOI) and rework accessibility on dense PCBs. |
| Moisture Sensitivity Level 1 | No dry-pack or baking required before reflow - reduces handling cost and process risk. |
| RoHS-compliant matte-tin plating | Lead-free finish compliant with IPC-J-STD-006 and JEDEC J-STD-020B - meets global environmental mandates. |
| High surge current rating | 545 A non-repetitive peak withstand capability - protects downstream circuitry from lightning or ESD-induced transients. |
Applications
| Power Supply Overvoltage Clamp | DC Reference Voltage Source |
|---|---|
Use Scenario: Clamps input voltage to protect switching regulators or microcontrollers from line surges exceeding 12 V. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to shunt excess current and clamp voltage at 8.7 V. Use Value: Prevents damage to 5 V or 3.3 V logic rails using a single discrete component with 545 A surge capacity. |
Use Scenario: Provides stable 8.7 V reference for ADC biasing or analog sensor excitation in industrial data acquisition. IC Role / Device Role / Timing Role: Precision voltage reference element with ±2% tolerance and low dynamic impedance. Use Value: Enables <1% full-scale error in 12-bit ADC systems without trimming, leveraging tight VZ tolerance and 2.0 Ω ZZT. |
| ESD Protection Network | Automotive Load Dump Suppression |
Use Scenario: Integrated into I/O port protection circuits to absorb fast-rising ESD pulses per IEC 61000-4-2 Level 4. IC Role / Device Role / Timing Role: Low-capacitance transient voltage suppressor placed between signal line and ground. Use Value: Limits voltage excursion to ≤9.2 V (VZ + ΔV) during 15 kV contact discharge, preserving interface IC integrity. |
Use Scenario: Mounted across battery rail in 12 V automotive modules to survive ISO 7637-2 load dump transients up to 60 V. IC Role / Device Role / Timing Role: Primary clamping device absorbing energy from alternator field collapse events. Use Value: Sustains 5 W continuous dissipation and 545 A surge without degradation, meeting OEM durability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5345B | Same VZ (8.7 V), ±5% tolerance, axial T-18 package, higher RθJA (125 °C/W), no RoHS option | Requires through-hole assembly; unsuitable for high-density SMT layouts or lead-free processes | Select only for legacy repair or prototyping where manual soldering and non-RoHS compliance are acceptable. |
| SMBJ5345B | Same VZ (8.7 V), ±5% tolerance, DO-214AA J-bend package, identical SMBG series electrical specs except IR = 10 µA @ 6.25 V vs. 5 µA | Compatible footprint but different lead geometry; requires revised stencil and placement offset | Choose when DO-214AA is already standardized in production; verify solder joint reliability with gull-wing vs. J-bend thermal profile. |
Compared with SMBG5345CE3/TR13, the 1N5345B lacks SMT compatibility and RoHS compliance, while SMBJ5345B offers identical regulation performance but demands layout adaptation-making SMBG5345CE3/TR13 optimal for new RoHS-compliant, high-density designs requiring visible solder joints and MSL-1 handling.
Availability
SMBG5345CE3/TR13 is available at Aetrix Electronics and suitable for power supply overvoltage protection, precision DC reference generation, and automotive load dump suppression requiring stable component supply, consistent parametric performance, and RoHS-compliant manufacturing.
Supply support for SMBG5345CE3/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-identical Zener performance in surface-mount form, targeting high-density power management and protection applications where thermal stability, surge resilience, and process compatibility are critical.
FAQ
What is the Zener voltage tolerance of SMBG5345CE3/TR13?
The SMBG5345CE3/TR13 has a Zener voltage tolerance of ±2%, indicated by the "C" suffix in the part number. This means its nominal 8.7 V breakdown voltage is guaranteed between 8.526 V and 8.874 V at 150 mA test current and 25 °C, supporting precision regulation in feedback loops and reference circuits where tight voltage control is required.
Does SMBG5345CE3/TR13 require dry packing before reflow soldering?
No, SMBG5345CE3/TR13 does not require dry packing prior to reflow. It is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it can be stored indefinitely at ambient conditions without baking. This eliminates pre-reflow handling steps and reduces manufacturing risk for high-volume SMT lines.
What is the maximum surge current rating for SMBG5345CE3/TR13?
The SMBG5345CE3/TR13 is rated for a maximum non-repetitive surge current (IZSM) of 545 A, defined as the peak value of an 8.3 ms half-sine waveform. This rating reflects its ability to absorb transient energy without failure, making it suitable for protecting sensitive electronics against lightning-induced surges or inductive switching spikes.
How does the DO-215AA package of SMBG5345CE3/TR13 differ from DO-214AA?
The DO-215AA package of SMBG5345CE3/TR13 uses gull-wing leads, enabling visible solder joints for AOI and easier rework, whereas DO-214AA (used in SMBJ53xxB) employs J-bend leads. While both are surface-mount, their footprints differ: DO-215AA requires wider pad spacing and longer solder fillets, necessitating separate PCB layout and stencil design.
Is SMBG5345CE3/TR13 compatible with lead-free reflow profiles?
Yes, SMBG5345CE3/TR13 is RoHS-compliant with annealed matte-tin plating and rated for 260 °C solder temperature for 10 seconds. It fully supports standard lead-free reflow profiles (e.g., JEDEC J-STD-020), including peak temperatures up to 260 °C, ensuring reliable interconnect formation without delamination or plating degradation.
SMBG5345CE3/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:
- ±2%
- 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)
SMBG5345CE3/TR13 FAQ
1.How can I place an order for SMBG5345CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5345CE3/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 SMBG5345CE3/TR13 reliable?
The price and inventory of SMBG5345CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5345CE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5345CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5345CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5345CE3/TR13?
SMBG5345CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5345CE3/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 SMBG5345CE3/TR13?
For technical support, including SMBG5345CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5345CE3/TR13 requirements.
6.How does Aetrix verify that SMBG5345CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5345CE3/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 SMBG5345CE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5345CE3/TR13?
All SMBG5345CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5345CE3/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 SMBG5345CE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5345CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5345CE3/TR13 Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
Diodes Incorporated
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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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SMAZ12-13-F
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