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Microchip Technology SMBG5387A/TR13
- Part No.:
- SMBG5387A/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5387A/TR13.pdf
- Description:
- DIODE ZENER 190V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,955
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Product details
Overview
SMBG5387A/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 190 V, ±10% tolerance (A-suffix), rated test current of 5.0 mA, maximum dynamic impedance of 450 Ω at IZT, and peak surge current capability of 1850 A (8.3 ms half-sine). It regulates voltage in high-voltage power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the SMBG5387A/TR13 datasheet, SMBG5387A/TR13 pinout, SMBG5387A/TR13 application, or SMBG5387A/TR13 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (RθJL = 25 °C/W), surge current rating, junction temperature range (–65 to +150 °C), and DO-215AA gull-wing package compatibility with automated SMT assembly.
Technical Context
This device operates as a precision voltage reference in reverse-biased breakdown mode, maintaining stable regulation across wide current (IZK to IZM) and temperature (–65 to +150 °C) ranges. Its low leakage (<0.5 µA at VR = 137 V) and minimal voltage drift versus current support reliable clamping in transient suppression and feedback sensing.
The DO-215AA gull-wing package enables visible solder joint inspection and delivers RθJL = 25 °C/W for efficient heat transfer to PCB leads. With moisture sensitivity level 1 per J-STD-020B, no dry pack is required prior to reflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 190 V ±10% - defines clamping threshold in overvoltage protection and feedback networks |
| Test Current (IZT) | 5.0 mA - standardized bias point for VZ measurement and impedance characterization |
| Max Dynamic Impedance (ZZT) | 450 Ω - limits regulation error under varying load current near IZT |
| Max Regulator Current (IZM) | 25 mA - maximum continuous DC current at rated power (5 W) with adequate heatsinking |
| Surge Current (IZSM) | 1850 A (8.3 ms half-sine) - supports single-event transient suppression without failure |
| Junction Temperature Range | –65 to +150 °C - ensures operation in industrial and automotive under-hood environments |
| Thermal Resistance (RθJL) | 25 °C/W - enables direct lead-to-PCB thermal path for power dissipation management |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band; banded end must be held positive relative to anode during operation. Leads are tin-lead or RoHS-compliant matte-tin plated for solderability per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink in reverse bias | Connected to ground or lower-potential node; carries full Zener current during regulation |
| Cathode | Regulated output node | Banded terminal; held at stable VZ above anode; used for voltage reference or clamping |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N53xxB equivalent | Direct functional and electrical replacement for legacy axial 1N5387B in space-constrained designs |
| Moisture Sensitivity Level 1 | No dry pack required before reflow - reduces handling cost and process steps |
| Non-ESD-sensitive | Qualified per MIL-STD-750 Method 1020 - eliminates need for ESD handling controls in assembly |
| Gull-wing lead form | Enables visual solder joint inspection and robust mechanical attachment on FR4 PCBs |
| High surge current rating | 1850 A (8.3 ms) supports IEC 61000-4-5 Level 4 surge immunity compliance without external crowbar |
Applications
| Switch-Mode Power Supply Feedback | Industrial Overvoltage Clamp |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Zener reference sets upper bound of feedback voltage; determines output regulation setpoint. Use Value: 190 V rating allows direct sensing of high-side auxiliary winding voltages without resistive divider scaling. |
Use Scenario: Protects PLC analog input modules from field-induced transients exceeding 150 V. IC Role / Device Role / Timing Role: Clamps surge energy into ground path during lightning-induced surges. Use Value: 1850 A surge rating absorbs 8.3 ms transients per IEC 61000-4-5 without degradation. |
| Automotive Battery Monitoring | Medical Equipment HV Bias Supply |
Use Scenario: Monitors 12 V battery rail during cold-crank (down to –40 °C) and load-dump (up to +130 °C). IC Role / Device Role / Timing Role: Provides stable reference for ADC input scaling in battery management ICs. Use Value: Stable VZ across –65 to +150 °C ensures consistent measurement accuracy over full automotive temperature range. |
Use Scenario: Stabilizes 180 V bias rail for photomultiplier tube (PMT) amplifiers in diagnostic imaging systems. IC Role / Device Role / Timing Role: Maintains precise high-voltage reference despite ripple and load variation. Use Value: Low dynamic impedance (450 Ω) minimizes output voltage deviation under 1–10 mA load changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5387B | Axial-leaded T-18 package; identical VZ, IZT, and IZM; RθJA = 120 °C/W vs. 90 °C/W for SMBG5387A/TR13 | Requires through-hole assembly; unsuitable for high-density SMT layouts | Select when legacy board design mandates axial footprint or manual repair is preferred |
| SMBJ5387A | DO-214AA J-bend package; same VZ, tolerance, and surge rating; RθJL = 30 °C/W vs. 25 °C/W | Lower thermal performance; less suitable for sustained high-current regulation | Select when existing DO-214AA footprint is fixed and marginal thermal margin is acceptable |
Compared with 1N5387B and SMBJ5387A, SMBG5387A/TR13 offers superior thermal conduction (RθJL = 25 °C/W) and gull-wing visibility for AOI, making it optimal for high-reliability SMT power regulation where thermal management and process control are critical.
Availability
SMBG5387A/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial overvoltage protection circuits, and automotive battery monitoring systems requiring stable component supply and long-term lifecycle support.
Supply support for SMBG5387A/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.
SMBG5387A/TR13 belongs to Microsemi's SMBG-series 5 W Zener diodes, designed specifically for surface-mount voltage regulation and transient suppression in high-density, thermally demanding power systems.
FAQ
What is the Zener voltage tolerance for SMBG5387A/TR13?
The "A" suffix in SMBG5387A/TR13 denotes ±10% Zener voltage tolerance, meaning the actual VZ falls between 171 V and 209 V at IZT = 5.0 mA and TL = 25 °C. This tolerance is verified per JEDEC JESD201 standard and applies across the full operating temperature range.
Does SMBG5387A/TR13 require dry packing before reflow soldering?
No. SMBG5387A/TR13 has IPC/JEDEC J-STD-020B moisture sensitivity level 1, confirmed by Microsemi documentation. It may be stored and processed directly without dry pack or baking, simplifying manufacturing flow and reducing risk of popcorning.
What is the maximum continuous Zener current for SMBG5387A/TR13?
The maximum continuous regulator current (IZM) for SMBG5387A/TR13 is 25 mA when mounted on FR4 with recommended pad layout and lead temperature maintained below 25 °C. At ambient conditions, derating applies per Figure 1 power derating curve.
How does SMBG5387A/TR13 compare to SMBJ5387A in thermal performance?
SMBG5387A/TR13 has RθJL = 25 °C/W, while SMBJ5387A (DO-214AA) has RθJL = 30 °C/W. This 17% lower thermal resistance enables SMBG5387A/TR13 to sustain higher average power in lead-attached thermal paths, critical for long-duration regulation tasks.
Is SMBG5387A/TR13 RoHS compliant?
Yes. The "TR13" suffix indicates tape-and-reel packaging; RoHS compliance is confirmed by the absence of "e3" marking - Microsemi's standard SMBG5387A/TR13 uses RoHS-compliant matte-tin plating per MIL-STD-750 Method 2026, as stated in the T4-LDS-0246-1 datasheet.
SMBG5387A/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):
- 190 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 450 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 137 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)
SMBG5387A/TR13 FAQ
1.How can I place an order for SMBG5387A/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5387A/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 SMBG5387A/TR13 reliable?
The price and inventory of SMBG5387A/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5387A/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5387A/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5387A/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5387A/TR13?
SMBG5387A/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5387A/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 SMBG5387A/TR13?
For technical support, including SMBG5387A/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5387A/TR13 requirements.
6.How does Aetrix verify that SMBG5387A/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5387A/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 SMBG5387A/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5387A/TR13?
All SMBG5387A/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5387A/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 SMBG5387A/TR13 part is unused and in its original packaging.
Return procedure for SMBG5387A/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5387A/TR13 Tags
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