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Microchip Technology SMBG5345C/TR13
- Part No.:
- SMBG5345C/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5345C/TR13.pdf
- Description:
- DIODE ZENER 8.7V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,097
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Product details
Overview
SMBG5345C/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal breakdown voltage of 8.7 V ±2%, 150 mA test current (IZT), 2.0 Ω dynamic impedance (ZZT), and DO-215AA gull-wing package. It regulates voltage in power supply reference and overvoltage protection circuits across industrial temperature range.
For engineers reviewing the SMBG5345C/TR13 datasheet, SMBG5345C/TR13 pinout, SMBG5345C/TR13 application, or SMBG5345C/TR13 equivalent, key selection criteria include Zener voltage tolerance, surge current rating (545 A), thermal resistance (25 °C/W junction-to-lead), and RoHS-compliant matte-tin plating for lead-free assembly.
Technical Context
This device operates as a precision voltage reference in reverse-biased mode, maintaining stable 8.7 V regulation at IZT = 150 mA with minimal voltage drift versus current (dynamic impedance 2.0 Ω) and temperature (−65 to +150 °C junction range). Its DO-215AA gull-wing package enables visible solder joints and meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity.
Rated for 5.0 W dissipation at TL < 25 °C, it delivers 545 A non-repetitive surge current (8.3 ms half-sine) and withstands 260 °C soldering for 10 s. Reverse leakage is limited to 10 µA at VR = 6.25 V, supporting low-power standby regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.7 V ±2% at IZT = 150 mA - precise reference for feedback loops and clamp thresholds |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - supports high-current regulation with adequate heatsinking |
| Dynamic Impedance (ZZT) | 2.0 Ω at IZT = 150 mA - ensures minimal output voltage variation under load transients |
| Max Surge Current (IZSM) | 545 A (8.3 ms half-sine) - protects downstream circuitry from transient overvoltage events |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - enables predictable thermal design on PCB with recommended footprint |
| Reverse Leakage (IR) | 10 µA at VR = 6.25 V - maintains low quiescent current in battery-backed or low-power systems |
| Junction Temperature Range | −65 to +150 °C - suitable for automotive under-hood and industrial control environments |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band; banded end is positive during reverse-bias operation. Weight: 0.1 g. Moisture sensitivity level: IPC/JEDEC J-STD-020B Level 1 (no dry pack required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-bias regulator configuration |
| Cathode | Reverse breakdown terminal | Banded end; connected to regulated output or clamped node; carries full Zener current |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5345B equivalent | Identical electrical specs and testing to legacy through-hole 1N5345B - simplifies SMT migration |
| RoHS-compliant matte-tin plating | Lead-free solder compatibility with 260 °C reflow profile - meets global environmental compliance |
| Gull-wing leads | Visible solder joints for automated optical inspection (AOI) - improves manufacturing yield |
| Level 1 moisture sensitivity | No dry-pack requirement or baking prior to assembly - reduces handling cost and risk |
| High surge current capability | 545 A peak (8.3 ms) - provides robust transient immunity without external TVS staging |
Applications
| Power Supply Feedback Reference | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Stabilizing output voltage in isolated DC-DC converters using optocoupler feedback loop. IC Role / Device Role / Timing Role: Precision voltage reference setting error amplifier threshold. Use Value: ±2% VZ tolerance and 2.0 Ω ZZT ensure tight regulation (<±10 mV shift) across line/load/temperature variations. |
Use Scenario: Protecting microcontroller I/O pins from ESD or inductive kickback in motor drive circuits. IC Role / Device Role / Timing Role: Fast-acting shunt clamp limiting voltage to 8.7 V during transients. Use Value: 545 A surge rating absorbs 100 A–500 A system-level transients without degradation. |
| Industrial Sensor Signal Conditioning | Automotive Body Control Module (BCM) Voltage Reference |
Use Scenario: Providing stable bias for bridge sensor amplifiers in harsh factory-floor environments. IC Role / Device Role / Timing Role: Low-drift reference source for instrumentation amplifier gain-setting network. Use Value: −65 to +150 °C operating range and <10 µA IR at 6.25 V enable reliable operation without calibration drift. |
Use Scenario: Generating reference voltage for LIN bus transceiver supply regulation in vehicle door modules. IC Role / Device Role / Timing Role: Primary Zener reference in 12 V rail conditioning stage. Use Value: Gull-wing DO-215AA package supports automated placement and AOI, meeting automotive PPAP requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5345B | Through-hole DO-41 package; identical VZ, IZT, ZZT, and PD specs per JEDEC standard | Requires axial-leaded PCB layout and wave soldering; not suitable for high-density SMT designs | Select when legacy through-hole assembly or manual prototyping is used |
| SMBJ5345C | J-bend DO-214AA package; same VZ, tolerance, and electrical specs but higher RθJA (100 °C/W vs. 25 °C/W) | Lower thermal performance in high-power continuous operation; requires larger copper area for heat dissipation | Select when board space constraints favor J-bend footprint over gull-wing |
Compared with SMBG5345C/TR13, 1N5345B offers identical regulation performance but lacks SMT manufacturability, while SMBJ5345C trades thermal efficiency for compact footprint-making SMBG5345C/TR13 optimal for thermally demanding, high-volume SMT applications.
Availability
SMBG5345C/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, and sensor interface circuits requiring stable component supply with RoHS compliance and gull-wing SMT compatibility.
Supply support for SMBG5345C/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 and mixed-signal components for aerospace, defense, and industrial markets.
The SMBG53xx series was designed specifically for surface-mount voltage regulation and transient suppression in space-constrained, thermally demanding applications where gull-wing visibility and Level 1 moisture handling are critical.
FAQ
What is the Zener voltage tolerance for SMBG5345C/TR13?
The SMBG5345C/TR13 has a Zener voltage tolerance of ±2%, specified as 8.7 V at IZT = 150 mA. This tighter tolerance enables higher-accuracy voltage references compared to ±5% (B-suffix) or ±10% (A-suffix) variants, making SMBG5345C/TR13 suitable for precision feedback and sensing applications where regulation stability is critical.
Does SMBG5345C/TR13 require dry packing before reflow soldering?
No, SMBG5345C/TR13 has IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it does not require dry packing or baking prior to reflow. Its void-free epoxy encapsulation and Level 1 rating allow direct placement and soldering using standard 260 °C/10 s profiles without moisture-related popcorning risk.
How does the thermal resistance of SMBG5345C/TR13 compare to other 5 W Zener packages?
SMBG5345C/TR13 features RθJL = 25 °C/W (junction-to-lead), significantly lower than RθJA = 90 °C/W (junction-to-ambient) and far superior to DO-214AA alternatives like SMBJ5345C (RθJA ≈ 100 °C/W). This gull-wing lead-frame design enables efficient heat transfer to PCB copper, supporting sustained 5 W operation with proper heatsinking.
Is SMBG5345C/TR13 compatible with lead-free reflow processes?
Yes, SMBG5345C/TR13 uses RoHS-compliant annealed matte-tin plating and is rated for 260 °C solder temperature for 10 seconds, fully compliant with IPC-J-STD-020D lead-free reflow profiles. The "C" suffix explicitly denotes ±2% tolerance and RoHS compliance, confirming suitability for modern Pb-free manufacturing lines.
What is the maximum surge current rating for SMBG5345C/TR13?
SMBG5345C/TR13 is rated for 545 A maximum non-repetitive surge current (IZSM) at 8.3 ms half-sine waveform. This value is derived from its 5 W power rating and 8.7 V Zener voltage, enabling robust protection against lightning-induced surges, inductive switching spikes, and ESD events in industrial and automotive systems.
SMBG5345C/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)
SMBG5345C/TR13 FAQ
1.How can I place an order for SMBG5345C/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5345C/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 SMBG5345C/TR13 reliable?
The price and inventory of SMBG5345C/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5345C/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5345C/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5345C/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5345C/TR13?
SMBG5345C/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5345C/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 SMBG5345C/TR13?
For technical support, including SMBG5345C/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5345C/TR13 requirements.
6.How does Aetrix verify that SMBG5345C/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5345C/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 SMBG5345C/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5345C/TR13?
All SMBG5345C/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5345C/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 SMBG5345C/TR13 part is unused and in its original packaging.
Return procedure for SMBG5345C/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5345C/TR13 Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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