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Microchip Technology SMBG5371A/TR13
- Part No.:
- SMBG5371A/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5371A/TR13.pdf
- Description:
- DIODE ZENER 60V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,563
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Product details
Overview
SMBG5371A/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 60 V, ±10% tolerance (A suffix), 20 mA test current (IZT), and 40 Ω dynamic impedance (ZZT) at IZT. It regulates voltage in power supply feedback loops and overvoltage protection circuits across industrial and telecom systems.
For engineers reviewing the SMBG5371A/TR13 datasheet, SMBG5371A/TR13 pinout, SMBG5371A/TR13 application, or SMBG5371A/TR13 equivalent, this page delivers verified electrical specs, DO-215AA gull-wing package details, thermal derating behavior, and validated alternative parts for voltage reference and clamping designs.
Technical Context
This device operates in reverse breakdown to maintain stable voltage across wide current (20 mA IZT to 79 mA IZM) and temperature (-65 °C to +150 °C) ranges. Its 25 °C/W junction-to-lead thermal resistance enables reliable 5 W dissipation with proper PCB copper heatsinking.
The SMBG5371A/TR13 exhibits low dynamic impedance (40 Ω at 20 mA), minimal voltage drift versus current, and high surge capability (350 A non-repetitive 8.3 ms half-sine), making it suitable for transient suppression and precision regulation where ±10% VZ tolerance is acceptable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 60 V ±10% - Stable regulation point at 20 mA; high-end tolerance limit is 66 V for worst-case IZM calculation. |
| Test Current (IZT) | 20 mA - Operating point where VZ and ZZT are specified; defines baseline bias for feedback loop design. |
| Dynamic Impedance (ZZT) | 40 Ω - Small-signal AC resistance in breakdown; determines output voltage ripple rejection under varying load. |
| Max Regulator Current (IZM) | 79 mA - Maximum DC current at 25 °C ambient with adequate heatsinking; derived from P = VZM × IZM. |
| Surge Current (IZSM) | 350 A - Non-repetitive 8.3 ms half-sine peak; supports transient overvoltage clamping without failure. |
| Junction Temp Range | -65 °C to +150 °C - Enables operation in extended industrial environments including automotive under-hood zones. |
| Thermal Resistance (RθJL) | 25 °C/W - Confirms efficient heat transfer to PCB lead; requires minimum 1 oz Cu pad layout per datasheet Figure 1. |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode band marking; polarity must be observed-cathode (banded end) is positive during regulation. Weight: 0.1 g. Moisture sensitivity level: IPC/JEDEC Level 1 (no dry pack required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-biased terminal during Zener operation | Connected to lower-potential node (e.g., ground or return path); forms current sink when cathode is biased higher. |
| Cathode | Zener voltage reference terminal | Banded end; connected to regulated node (e.g., feedback divider tap); maintains 60 V relative to anode under breakdown. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5371B equivalent | Identical electrical characteristics and testing to through-hole 1N5371B; enables drop-in replacement in legacy designs with board rework. |
| RoHS-compliant matte-tin plating | Meets lead-free soldering requirements (260 °C, 10 s); compatible with standard reflow profiles without whisker risk. |
| Level 1 moisture sensitivity | No dry-pack or baking required before assembly; reduces manufacturing overhead and avoids moisture-induced popcorning. |
| Gull-wing leads | Enables visual solder joint inspection; improves reliability verification in automated optical inspection (AOI) systems. |
Applications
| Power Supply Feedback Regulation | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Stabilizing output voltage in isolated flyback or forward converter feedback networks using optocoupler-coupled TL431 alternatives. IC Role / Device Role / Timing Role: Zener reference element setting precise 60 V threshold for error amplifier input. Use Value: Maintains ±10% output regulation across 20–79 mA operating range and -40 °C to +85 °C ambient, reducing need for trimming. | Use Scenario: Protecting 48 V telecom line cards from lightning-induced surges exceeding 100 V. IC Role / Device Role / Timing Role: Fast-acting shunt clamp diverting excess energy to ground before downstream ICs reach breakdown. Use Value: Withstands 350 A 8.3 ms surges without degradation, enabling single-stage protection without series TVS cascading. |
| Industrial Sensor Excitation Reference | DC Link Voltage Monitoring |
Use Scenario: Providing stable excitation voltage for 4–20 mA current-loop pressure transmitters in factory automation PLC modules. IC Role / Device Role / Timing Role: Precision voltage source for bridge sensor biasing, referenced to system ground. Use Value: Delivers <1% VZ drift over 1000-hour life at 70 °C, ensuring long-term calibration stability without active regulation. | Use Scenario: Monitoring 60–80 V DC link in motor drive inverters to trigger shutdown before IGBT overvoltage failure. IC Role / Device Role / Timing Role: Passive voltage threshold detector feeding comparator input. Use Value: 60 V ±10% trip point aligns with IEC 61800-5-1 overvoltage Class II thresholds, supporting functional safety compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5371B | Through-hole DO-41 package; identical VZ, IZT, ZZT, and IZM specs; same ±10% tolerance. | Requires axial-leaded PCB footprint; unsuitable for high-density SMT layouts. | Select when legacy through-hole assembly is mandated or thermal mass from leads improves transient handling. |
| SMBG5371B | Same DO-215AA package but ±5% VZ tolerance; lower ZZT (35 Ω vs. 40 Ω); identical IZT (20 mA) and IZM (79 mA). | Higher precision regulation needed for tighter feedback loops; slightly better ripple rejection. | Choose when ±5% VZ tolerance is required and 5 Ω lower dynamic impedance improves stability margin. |
Compared with SMBG5371A/TR13, the 1N5371B offers identical regulation performance in through-hole form, while SMBG5371B provides tighter voltage control and lower impedance for demanding feedback applications-both require no circuit redesign but differ in mounting and tolerance-driven selection criteria.
Availability
SMBG5371A/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, telecom surge protection circuits, and sensor excitation references requiring stable component supply, RoHS compliance, and gull-wing surface-mount compatibility.
Supply support for SMBG5371A/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, RF, and timing solutions for aerospace, defense, and industrial markets.
The SMBG53xxA/B series was designed for robust, surface-mount voltage regulation and clamping in harsh-environment power systems where JEDEC-compatibility, thermal resilience, and surge immunity are critical.
FAQ
What is the Zener voltage tolerance of SMBG5371A/TR13?
The "A" suffix in SMBG5371A/TR13 denotes ±10% Zener voltage tolerance, meaning its breakdown voltage is guaranteed between 54 V and 66 V at 20 mA test current and 25 °C. This tolerance is confirmed in the Electrical Characteristics table on page 3 of Microsemi's T4-LDS-0246-1 datasheet, where SMBG5371A is explicitly listed with VR = 43 V and IZM = 79 mA.
Does SMBG5371A/TR13 require dry packing before reflow soldering?
No, SMBG5371A/TR13 has IPC/JEDEC moisture sensitivity level 1, as stated in the Applications/Benefits section and Mechanical Packaging section of the datasheet. This means it can be stored and assembled without dry packing or baking-even after exposure to ambient humidity-eliminating moisture-related popcorning risks during reflow.
What is the maximum continuous power dissipation for SMBG5371A/TR13 at 70 °C ambient?
At 70 °C ambient, SMBG5371A/TR13's power derating follows the curve in Figure 1: 5.0 W at ≤25 °C, linearly decreasing to ~3.3 W at 70 °C. This assumes mounting on FR4 with 1 oz Cu and recommended pad layout; exceeding this requires additional copper area or forced airflow to avoid junction overheating beyond 150 °C.
Is SMBG5371A/TR13 RoHS compliant?
Yes, SMBG5371A/TR13 uses RoHS-compliant annealed matte-tin plating on gull-wing terminals, as documented in the Mechanical and Packaging section. The "A" suffix does not indicate RoHS status (that is denoted by "e3"), but Microsemi confirms all SMBG53xxA/TR13 parts shipped post-2006 meet RoHS Directive 2002/95/EC with lead content <1000 ppm.
Can SMBG5371A/TR13 replace 1N5371B in existing designs?
Yes-SMBG5371A/TR13 is explicitly stated as the surface-mount equivalent of JEDEC-registered 1N5371B with identical electrical characteristics and testing. While package differs (DO-215AA vs. DO-41), the VZ, IZT, ZZT, IZM, and surge ratings match, enabling direct functional replacement with only footprint adaptation.
SMBG5371A/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):
- 60 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 43 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)
SMBG5371A/TR13 FAQ
1.How can I place an order for SMBG5371A/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5371A/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 SMBG5371A/TR13 reliable?
The price and inventory of SMBG5371A/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5371A/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5371A/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5371A/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5371A/TR13?
SMBG5371A/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5371A/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 SMBG5371A/TR13?
For technical support, including SMBG5371A/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5371A/TR13 requirements.
6.How does Aetrix verify that SMBG5371A/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5371A/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 SMBG5371A/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5371A/TR13?
All SMBG5371A/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5371A/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 SMBG5371A/TR13 part is unused and in its original packaging.
Return procedure for SMBG5371A/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5371A/TR13 Tags
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