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Microchip Technology SMBG5385AE3/TR13
- Part No.:
- SMBG5385AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5385AE3/TR13.pdf
- Description:
- DIODE ZENER 170V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,757
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Product details
Overview
SMBG5385AE3/TR13 from Microsemi is a surface-mount 5 W Zener diode with a nominal breakdown voltage of 170 V, ±10% tolerance (A suffix), rated for 8.0 mA test current (IZT), 380 Ω maximum dynamic impedance (ZZT), and 1.1 A maximum surge current (IZSM); used for precision voltage regulation in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the SMBG5385AE3/TR13 datasheet, SMBG5385AE3/TR13 pinout, SMBG5385AE3/TR13 application, or SMBG5385AE3/TR13 equivalent, key selection criteria include Zener voltage accuracy at IZT, thermal resistance (RθJL = 25 °C/W), surge current capability (IZSM = 1.1 A), RoHS-compliant matte-tin plating, and DO-215AA gull-wing package compatibility with automated SMT assembly.
Technical Context
This device operates as a two-terminal voltage reference in reverse-biased mode, with cathode indicated by a band and requiring positive bias on the banded end. Its Zener voltage is specified at TL = 30 °C with 40 ±10 ms settling time after DC current application.
It delivers stable regulation across wide current ranges (IZK to IZM) and temperature extremes (–65 to +150 °C), supported by low dynamic impedance (380 Ω at 8.0 mA) and minimal voltage drift versus current-enabling reliable clamping in transient suppression and feedback sensing applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 170 V ±10% at 8.0 mA - defines precise clamping threshold for overvoltage protection and reference stability. |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - supports high-energy transient absorption when mounted with adequate heat sinking. |
| Dynamic Impedance (ZZT) | 380 Ω max at 8.0 mA - ensures minimal voltage variation under load changes in regulation circuits. |
| Surge Current (IZSM) | 1.1 A peak (8.3 ms half-sine) - withstands repetitive line transients without degradation. |
| Junction Temperature Range | –65 to +150 °C - enables operation in automotive under-hood and industrial control environments. |
| Thermal Resistance (RθJL) | 25 °C/W - allows efficient heat transfer to PCB copper, critical for sustained 5 W operation. |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - eliminates dry-pack requirement and simplifies handling and storage. |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by a band on the body; terminals are anode (unbanded end) and cathode (banded end); designed for visible solder joint inspection and compatible with standard reflow profiles (260 °C for 10 s).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; referenced ground in Zener clamp configuration | Connected to lower-potential node (e.g., ground or return path) during regulation or clamping. |
| Cathode | Current exit terminal in forward bias; high-side connection in Zener operation | Banded terminal connected to input rail or feedback node; reverse-biased to maintain 170 V reference. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5385B equivalence | Identical electrical characteristics and testing to legacy through-hole 1N5385B, enabling drop-in replacement in upgraded designs. |
| RoHS-compliant matte-tin plating | e3 suffix confirms annealed matte-tin finish meeting MIL-STD-750 Method 2026, ensuring solderability and long-term reliability. |
| Gull-wing lead form | DO-215AA package provides visible solder joints and mechanical robustness for automated optical inspection (AOI) and rework. |
| Level 1 moisture sensitivity | No dry pack required - reduces inventory handling cost and eliminates bake-out steps before SMT assembly. |
Applications
| Switch-Mode Power Supply Feedback | Industrial Motor Drive Overvoltage Clamp |
|---|---|
|
Use Scenario: Regulates output voltage in isolated flyback converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Zener reference diode providing stable 170 V threshold for TL431-like feedback sensing. Use Value: Maintains ±10% output regulation across line/load/temperature with 380 Ω dynamic impedance limiting error gain variation. |
Use Scenario: Clamps DC bus voltage spikes caused by regenerative braking in 3-phase inverters. IC Role / Device Role / Timing Role: Passive overvoltage protection element absorbing transient energy into snubber network. Use Value: Withstands 1.1 A non-repetitive surge (8.3 ms) without parametric shift, preventing IGBT desaturation faults. |
| Telecom Line Card Surge Protection | Medical Imaging Power Rail Stabilization |
|
Use Scenario: Protects analog front-end circuitry from lightning-induced surges on 48 V DC distribution lines. IC Role / Device Role / Timing Role: Primary shunt clamp in multi-stage TVS architecture, triggered before downstream MOVs. Use Value: Fast response (<40 ms settling) and low leakage (<0.5 µA at 136 V) prevent false triggering during normal operation. |
Use Scenario: Stabilizes high-voltage bias rails (e.g., 150–180 V) for X-ray detector photodiode arrays. IC Role / Device Role / Timing Role: Precision voltage reference maintaining constant bias under varying detector leakage currents. Use Value: 170 V ±10% tolerance and <0.5 µA IR at VR = 136 V ensure signal integrity and low dark-current drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5385B | Through-hole DO-41 package; identical VZ, IZT, ZZT, and PD specs; no RoHS compliance (Sn/Pb plating). | Requires axial-leaded PCB layout and wave soldering; unsuitable for high-density SMT production. | Select when legacy through-hole assembly is mandated or thermal mass requirements exceed SMBG's RθJA = 90 °C/W. |
| SMBJ5385B | Same DO-214AA (J-bend) package; identical electrical specs but different thermal resistance (RθJL = 30 °C/W vs. 25 °C/W). | Lower thermal efficiency limits sustained 5 W operation without enhanced copper pour; less suitable for compact heatsinking. | Prefer when existing footprint uses DO-214AA; verify thermal margin using RθJL = 30 °C/W in worst-case ambient conditions. |
Compared with SMBG5385AE3/TR13, 1N5385B offers identical regulation performance but requires manual or wave-solder assembly, while SMBJ5385B shares SMT compatibility but trades 5 °C/W higher junction-to-lead thermal resistance-impacting long-term reliability under continuous 5 W load.
Availability
SMBG5385AE3/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial motor drives, and telecom surge protection systems requiring stable component supply, consistent Zener voltage tolerance, and RoHS-compliant manufacturing.
Supply support for SMBG5385AE3/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 engineered for surface-mount voltage regulation in space-constrained, high-surge environments-delivering JEDEC-equivalent performance with modern gull-wing packaging and RoHS compliance.
FAQ
What is the Zener voltage tolerance of SMBG5385AE3/TR13?
The SMBG5385AE3/TR13 has a ±10% Zener voltage tolerance, denoted by the "A" suffix in its part number. Its nominal VZ is 170 V, meaning the actual breakdown voltage falls between 153 V and 187 V when measured at 8.0 mA test current and TL = 30 °C. This tolerance is verified per Microsemi T4-LDS-0246-1 Rev. 1 specifications and applies across the full operating temperature range.
Is SMBG5385AE3/TR13 RoHS compliant?
Yes, SMBG5385AE3/TR13 is RoHS compliant, confirmed by the "e3" suffix in its marking. It features annealed matte-tin plating per MIL-STD-750 Method 2026 and meets all substance restrictions defined in Directive 2011/65/EU. The device is also moisture sensitivity Level 1, eliminating dry-pack requirements for handling and storage.
What is the maximum surge current rating for SMBG5385AE3/TR13?
The SMBG5385AE3/TR13 is rated for a maximum non-repetitive peak surge current (IZSM) of 1.1 A, defined as a single 8.3 ms half-sine waveform. This rating is validated under the conditions specified in Microsemi's T4-LDS-0246-1 datasheet and supports robust transient suppression in power supply and motor drive applications without parameter degradation.
How does the DO-215AA package of SMBG5385AE3/TR13 differ from DO-214AA?
The DO-215AA package of SMBG5385AE3/TR13 uses gull-wing leads for visible solder joints and improved mechanical strength, whereas DO-214AA (used in SMBJ5385B) employs J-bend leads. DO-215AA offers lower thermal resistance (RθJL = 25 °C/W vs. 30 °C/W) and better suitability for AOI and rework-critical for high-reliability SMT lines where solder joint inspection is mandatory.
Can SMBG5385AE3/TR13 replace 1N5385B in existing designs?
Yes, SMBG5385AE3/TR13 is electrically equivalent to 1N5385B per Microsemi documentation, matching VZ, IZT, ZZT, PD, and surge ratings. However, it requires PCB footprint revision from DO-41 to DO-215AA and supports only reflow soldering-not wave soldering. The e3 RoHS finish also replaces Sn/Pb plating, necessitating process validation for lead-free assembly.
SMBG5385AE3/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):
- 170 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 380 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 122 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)
SMBG5385AE3/TR13 FAQ
1.How can I place an order for SMBG5385AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5385AE3/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 SMBG5385AE3/TR13 reliable?
The price and inventory of SMBG5385AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5385AE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5385AE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5385AE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5385AE3/TR13?
SMBG5385AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5385AE3/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 SMBG5385AE3/TR13?
For technical support, including SMBG5385AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5385AE3/TR13 requirements.
6.How does Aetrix verify that SMBG5385AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5385AE3/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 SMBG5385AE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5385AE3/TR13?
All SMBG5385AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5385AE3/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 SMBG5385AE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5385AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5385AE3/TR13 Tags
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MM5Z5V1ST1G
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