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Microchip Technology SMBG5387B/TR13
- Part No.:
- SMBG5387B/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5387B/TR13.pdf
- Description:
- DIODE ZENER 190V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,730
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Product details
Overview
SMBG5387B/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal breakdown voltage of 190 V, ±5% tolerance (B suffix), 5 mA test current (IZT), and maximum Zener current (IZM) of 25 mA. It operates over -65 °C to +150 °C junction temperature and is used for precision voltage regulation in industrial power supplies and overvoltage protection circuits.
For engineers reviewing the SMBG5387B/TR13 datasheet, SMBG5387B/TR13 pinout, SMBG5387B/TR13 application, or SMBG5387B/TR13 equivalent, key selection criteria include its 190 V Zener voltage, 5 W power rating at TL < 25 °C, DO-215AA gull-wing package, 450 Ω dynamic impedance at IZT, and 1850 A non-repetitive surge current capability.
Technical Context
This device functions as a two-terminal voltage reference diode operating in reverse breakdown. Its regulation performance is defined at 5 mA test current (IZT), with dynamic impedance (ZZT) of 450 Ω measured at 10% rms AC modulation superimposed on IZT.
Thermal design relies on junction-to-lead resistance of 25 °C/W and junction-to-ambient resistance of 90 °C/W when mounted on FR4 with recommended footprint. The cathode is marked by a band, requiring the banded end to be biased positive relative to the anode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 190 V ±5% at 5 mA - defines stable regulation point under nominal bias |
| Power Dissipation (PD) | 5.0 W at lead temperature < 25 °C - requires thermal management for sustained operation |
| Dynamic Impedance (ZZT) | 450 Ω at 5 mA - indicates voltage stability under small-signal AC load variations |
| Max Surge Current (IZSM) | 1850 A (8.3 ms half-sine) - supports transient overvoltage clamping without failure |
| Junction Temperature Range | -65 °C to +150 °C - enables use in extended industrial and automotive under-hood environments |
| Reverse Leakage (IR) | 0.5 µA at 137 V - ensures minimal standby power loss in high-impedance bias networks |
| Thermal Resistance (RθJL) | 25 °C/W - allows direct thermal path to PCB copper for effective heat extraction |
Pinout & Package
Package: DO-215AA gull-wing surface-mount package with void-free UL94V-0 epoxy body, matte-tin RoHS-compliant plating, and visible solder joints. Cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-biased terminal during regulation | Connected to lower-potential node; carries full Zener current in clamp mode |
| Cathode | Higher-potential terminal during regulation | Banded end; connected to protected rail or reference node; defines polarity for correct biasing |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5387B equivalent | Identical electrical specs and testing - enables drop-in replacement for legacy through-hole designs |
| Moisture Sensitivity Level 1 | No dry pack required - simplifies handling and eliminates bake-out prior to reflow |
| Non-ESD sensitive | Qualified per MIL-STD-750 Method 1020 - reduces ESD handling requirements in production |
| Gull-wing lead form | Enables visual solder joint inspection - improves post-reflow quality assurance on automated lines |
| High surge current rating | 1850 A peak (8.3 ms) - provides robust transient suppression in DC bus protection applications |
Applications
| Industrial Power Supply Regulation | DC Bus Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing reference voltage for feedback loops in 48 V–400 V switch-mode power supplies. IC Role / Device Role / Timing Role: Two-terminal shunt regulator providing precise 190 V reference for error amplifier input. Use Value: Maintains output accuracy within ±5% across load and temperature while dissipating up to 5 W continuously. | Use Scenario: Protecting IGBT gate drivers and sensing circuitry from voltage spikes on 200–300 V DC link rails. IC Role / Device Role / Timing Role: Passive clamping element diverting surge energy away from sensitive downstream components. Use Value: Withstands 1850 A transient surges (8.3 ms) without degradation, preserving system reliability. |
| Programmable Voltage Monitor Threshold | High-Voltage Sensor Biasing |
Use Scenario: Setting trip point for undervoltage/overvoltage detection in battery management systems with 150–200 V nominal packs. IC Role / Device Role / Timing Role: Fixed-voltage threshold element in comparator-based monitoring circuits. Use Value: Delivers stable 190 V reference with <0.5 µA leakage at 137 V, minimizing quiescent current draw. | Use Scenario: Providing bias voltage for photodiode or isolation amplifier front-ends in high-side sensing applications. IC Role / Device Role / Timing Role: High-impedance voltage source establishing known potential for signal conditioning stages. Use Value: Low dynamic impedance (450 Ω) ensures minimal voltage shift under varying sensor loading conditions. |
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 tolerance; higher RθJA (150 °C/W) | Requires through-hole assembly; unsuitable for high-density SMT layouts | Select when legacy board compatibility or manual prototyping is prioritized over space and thermal efficiency |
| SMBJ5387B | DO-214AA J-bend package; same electrical specs but different mechanical footprint and thermal resistance (RθJA = 100 °C/W) | Compatible with standard SMT pick-and-place but lacks gull-wing visibility for optical inspection | Choose when existing DO-214AA land patterns exist and visual solder verification is not required |
Compared with SMBG5387B/TR13, 1N5387B offers identical regulation but demands through-hole assembly and delivers inferior thermal performance, while SMBJ5387B matches SMT compatibility but sacrifices solder-joint visibility and thermal efficiency due to higher junction-to-ambient resistance.
Availability
SMBG5387B/TR13 is available at Aetrix Electronics and suitable for industrial power supply regulation, DC bus overvoltage clamping, and high-voltage sensor biasing requiring stable component supply and long-term lifecycle support.
Supply support for SMBG5387B/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 ICs, discrete devices, and timing solutions for aerospace, defense, and industrial markets.
The SMBG53xxB series was designed specifically for surface-mount voltage regulation and transient suppression in space-constrained, thermally demanding power systems where JEDEC-compatibility and moisture-insensitive packaging are critical.
FAQ
What is the Zener voltage tolerance for SMBG5387B/TR13?
The 'B' suffix in SMBG5387B/TR13 specifies a ±5% Zener voltage tolerance. At the rated test current of 5 mA, the actual breakdown voltage falls between 180.5 V and 199.5 V. This tolerance is verified per JEDEC standards and applies across the full operating temperature range of -65 °C to +150 °C. SMBG5387B/TR13 is not rated for tighter tolerances such as ±2% (C suffix) or ±10% (A suffix).
Can SMBG5387B/TR13 be used in place of 1N5387B?
Yes, SMBG5387B/TR13 is electrically equivalent to 1N5387B per Microsemi documentation, sharing identical Zener voltage, test current, dynamic impedance, and surge ratings. However, SMBG5387B/TR13 uses a DO-215AA gull-wing package versus the axial T-18 package of 1N5387B, so PCB layout and assembly process must be updated accordingly. No changes to circuit functionality are required.
What is the maximum continuous power dissipation for SMBG5387B/TR13?
SMBG5387B/TR13 is rated for 5.0 W continuous power dissipation only when the lead temperature (TL) remains below 25 °C. On a standard FR4 board with 1 oz copper and the recommended pad layout, derating begins above 25 °C at 55.6 mW/°C, reaching 1.38 W at 25 °C ambient. Thermal design must account for RθJL = 25 °C/W and RθJA = 90 °C/W to avoid exceeding junction limits.
Is SMBG5387B/TR13 RoHS compliant?
Yes, SMBG5387B/TR13 is RoHS compliant, as confirmed by the 'e3' marking option referenced in Microsemi's nomenclature guide and supported by its matte-tin plating. The device meets EU Directive 2011/65/EU and contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits. Compliance documentation is available upon request from Aetrix Electronics.
What does the 'TR13' suffix indicate in SMBG5387B/TR13?
The 'TR13' suffix in SMBG5387B/TR13 denotes tape-and-reel packaging per EIA-481-1-A standard, using a 12 mm carrier tape with 13-inch reels. This format supports automated SMT placement and is distinct from bulk or ammo-pack options. The TR13 configuration contains 2500 units per reel, consistent with Microsemi's standard ordering convention for SMBG-series Zeners.
SMBG5387B/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:
- ±5%
- 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)
SMBG5387B/TR13 FAQ
1.How can I place an order for SMBG5387B/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5387B/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 SMBG5387B/TR13 reliable?
The price and inventory of SMBG5387B/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5387B/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5387B/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5387B/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5387B/TR13?
SMBG5387B/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5387B/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 SMBG5387B/TR13?
For technical support, including SMBG5387B/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5387B/TR13 requirements.
6.How does Aetrix verify that SMBG5387B/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5387B/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 SMBG5387B/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5387B/TR13?
All SMBG5387B/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5387B/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 SMBG5387B/TR13 part is unused and in its original packaging.
Return procedure for SMBG5387B/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5387B/TR13 Tags
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BZX84C3V3LT1G
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MMSZ4682T1G
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MM5Z5V1ST1G
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