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Microchip Technology SMBG5366B/TR13
- Part No.:
- SMBG5366B/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5366B/TR13.pdf
- Description:
- DIODE ZENER 39V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,263
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Product details
Overview
SMBG5366B/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 39 V, ±5% tolerance (B suffix), 30 mA test current, and 122 Ω dynamic impedance at IZT. It operates from –65 °C to +150 °C and is used for precision voltage regulation in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the SMBG5366B/TR13 datasheet, SMBG5366B/TR13 pinout, SMBG5366B/TR13 application, or SMBG5366B/TR13 equivalent, key selection criteria include Zener voltage accuracy, surge current rating (3.1 A), thermal resistance (25 °C/W junction-to-lead), DO-215AA gull-wing package compatibility, and RoHS-compliant matte-tin plating.
Technical Context
This device functions as a two-terminal voltage reference diode operating in reverse breakdown, delivering stable 39 V regulation across 1.0 mA to 30 mA operating current range. Its low dynamic impedance (122 Ω at 30 mA) ensures minimal voltage variation under load transients.
The SMBG5366B/TR13 uses a void-free thermosetting epoxy case (UL94V-0), gull-wing tin-plated leads per MIL-STD-750 method 2026, and exhibits Level 1 moisture sensitivity-no dry pack required. Cathode polarity is marked by a band; operation requires cathode-positive biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 39 V ±5% at 30 mA - defines regulated output voltage in feedback or clamp applications |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - supports high-energy transient suppression with adequate heatsinking |
| Dynamic Impedance (ZZT) | 122 Ω at 30 mA - determines regulation stiffness and AC ripple rejection capability |
| Max Surge Current (IZSM) | 3.1 A (8.3 ms half-sine) - enables robust handling of short-duration overvoltage events |
| Junction-to-Lead RθJL | 25 °C/W - allows direct thermal path to PCB copper for reliable power derating |
| Reverse Leakage (IR) | 0.5 µA at 29.7 V - ensures low standby power loss in high-impedance bias networks |
| Operating Temperature | –65 °C 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; terminals are anode (unbanded end) and cathode (banded end). Designed for visible solder joint inspection and compatible with standard reflow profiles (260 °C, 10 s).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; reference node in reverse-bias regulation | Connected to lower-potential side of circuit; forms return path for Zener current |
| Cathode | Current exit terminal in forward bias; regulated output node in reverse bias | Banded end; connected to regulated rail or error amplifier input in feedback loops |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5366B equivalent | Identical electrical specs and test methods - enables drop-in replacement in legacy designs |
| Gull-wing lead form | Enables visual solder joint inspection and reduces tombstoning risk on fine-pitch layouts |
| Level 1 moisture sensitivity | No dry pack or baking required before assembly - simplifies SMT line logistics |
| RoHS-compliant matte-tin plating | Meets IPC-J-STD-020B solderability requirements without lead contamination concerns |
| High IZM (170 mA) | Supports >10× typical bias current margin - improves long-term stability under aging stress |
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 element setting precise 39 V threshold for TL431 or error amplifier bias network. Use Value: Tight ±5% tolerance and low 122 Ω ZZT minimize output drift across line/load/temperature variations. |
Use Scenario: Protects 36 V DC bus against transient surges in motor drive inverters. IC Role / Device Role / Timing Role: Shunt clamping device diverting excess energy to ground during IGBT switching spikes. Use Value: 3.1 A non-repetitive surge rating and 5 W steady-state dissipation handle repetitive 100 ns–1 µs transients. |
| Automotive ECU Reference | Test Equipment Voltage Standard |
Use Scenario: Provides stable 39 V reference for analog sensor signal conditioning in engine control units. IC Role / Device Role / Timing Role: Precision voltage reference for ADC biasing and DAC output scaling circuits. Use Value: –65 °C to +150 °C operating range and <0.5 µA leakage at 29.7 V ensure reliability in under-hood environments. |
Use Scenario: Calibrates benchtop multimeters and programmable power supplies requiring traceable 39 V reference. IC Role / Device Role / Timing Role: Primary shunt reference in metrology-grade voltage divider networks. Use Value: Low 122 Ω dynamic impedance and tight ±5% tolerance support <0.1% absolute accuracy in calibrated systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5366B | Axial-leaded T-18 package; identical VZ, IZT, ZZT, and tolerance; higher RθJA (125 °C/W vs. 90 °C/W) | Requires through-hole assembly; unsuitable for high-density SMT layouts | Select when legacy through-hole production or manual prototyping is required |
| SMBJ5366B | DO-214AA J-bend package; same electrical specs but 35 °C/W higher RθJA (125 °C/W); identical RθJL | Compatible with same footprint class but requires different pad layout; less efficient convection cooling | Select when DO-214AA is standardized in existing design libraries or for cost-sensitive volume builds |
Compared with SMBG5366B/TR13, 1N5366B offers identical regulation performance but mandates through-hole assembly, while SMBJ5366B retains SMT compatibility at the cost of reduced thermal efficiency on FR4 boards - making SMBG5366B/TR13 optimal for space-constrained, thermally demanding applications.
Availability
SMBG5366B/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial overvoltage clamps, and automotive ECU references requiring stable component supply, full RoHS compliance, and guaranteed long-term manufacturability.
Supply support for SMBG5366B/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 SMBG53xxB series was designed specifically for surface-mount voltage regulation in high-density power systems where thermal performance, visual solder inspection, and JEDEC compatibility are critical.
FAQ
What is the Zener voltage tolerance for SMBG5366B/TR13?
The "B" suffix in SMBG5366B/TR13 denotes ±5% Zener voltage tolerance. At 30 mA test current, the specified VZ range is 37.05 V to 40.95 V. This tolerance is verified per JEDEC test methods and applies across the full operating temperature range of –65 °C to +150 °C. The SMBG5366B/TR13 maintains this specification without requiring derating at elevated temperatures.
Does SMBG5366B/TR13 require dry packing before reflow soldering?
No, SMBG5366B/TR13 has IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it may be stored indefinitely at ≤30 °C/60% RH without dry packing. The device's void-free epoxy encapsulation and Level 1 rating eliminate bake requirements prior to standard reflow profiles, including peak temperatures up to 260 °C for 10 seconds.
What is the maximum continuous Zener current for SMBG5366B/TR13?
The maximum dc regulator current (IZM) for SMBG5366B/TR13 is 170 mA when mounted on FR4 with recommended footprint and lead temperature maintained below 25 °C. This value is derived from PD = 5.0 W and VZ = 39 V, and assumes proper thermal management - exceeding 170 mA risks thermal runaway due to positive temperature coefficient above knee current.
How does SMBG5366B/TR13 compare to SMBJ5366B in thermal performance?
SMBG5366B/TR13 has RθJA = 90 °C/W on FR4 (1 oz Cu), while SMBJ5366B has RθJA = 125 °C/W under identical conditions. Both share identical RθJL = 25 °C/W, confirming equal junction-to-lead conduction efficiency. The difference arises from gull-wing (SMBG) vs. J-bend (SMBJ) lead geometry affecting convective cooling - making SMBG5366B/TR13 preferable for thermally constrained layouts.
Is SMBG5366B/TR13 RoHS compliant?
Yes, SMBG5366B/TR13 carries the "e3" RoHS compliance designation per its nomenclature (implied by TR13 tape-and-reel packaging and Microsemi documentation). It features annealed matte-tin plating per MIL-STD-750 method 2026 and meets EU Directive 2011/65/EU requirements, with lead content <1000 ppm and no restricted substances above threshold limits.
SMBG5366B/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):
- 39 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 14 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 28.1 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)
SMBG5366B/TR13 FAQ
1.How can I place an order for SMBG5366B/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5366B/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 SMBG5366B/TR13 reliable?
The price and inventory of SMBG5366B/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5366B/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5366B/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5366B/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5366B/TR13?
SMBG5366B/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5366B/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 SMBG5366B/TR13?
For technical support, including SMBG5366B/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5366B/TR13 requirements.
6.How does Aetrix verify that SMBG5366B/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5366B/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 SMBG5366B/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5366B/TR13?
All SMBG5366B/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5366B/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 SMBG5366B/TR13 part is unused and in its original packaging.
Return procedure for SMBG5366B/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5366B/TR13 Tags
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BZT52C5V6T-7
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BZX84C3V3LT1G
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MMSZ4682T1G
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MM5Z5V1ST1G
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