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Microchip Technology SMBG5371AE3/TR13
- Part No.:
- SMBG5371AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5371AE3/TR13.pdf
- Description:
- DIODE ZENER 60V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,030
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Product details
Overview
SMBG5371AE3/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), 40 Ω dynamic impedance (ZZT), and maximum regulator current of 79 mA (IZM). It operates in the DO-215AA gull-wing package and is used for precision voltage regulation in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the SMBG5371AE3/TR13 datasheet, SMBG5371AE3/TR13 pinout, SMBG5371AE3/TR13 application, or SMBG5371AE3/TR13 equivalent, key selection criteria include Zener voltage accuracy at 20 mA, thermal resistance (RθJL = 25 °C/W), surge current capability (IZSM = 350 A), RoHS-compliant matte-tin plating, and compatibility with automated SMT assembly on FR4 boards.
Technical Context
This device functions as a two-terminal voltage reference operating in reverse breakdown, with specified Zener voltage measured at TL = 25 °C and IZT = 20 mA. Its low dynamic impedance (40 Ω) ensures stable regulation across varying load currents, while its 5 W power rating is valid only when lead temperature (TL) remains ≤25 °C.
The SMBG5371AE3/TR13 uses a void-free thermosetting epoxy case (UL94V-0), cathode-indicating band polarity, and gull-wing leads solderable per MIL-STD-750 Method 2026. Moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1 - no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 60 V ±10% at IZT = 20 mA - defines regulated output voltage under nominal bias conditions |
| Power Dissipation (PD) | 5.0 W at TL ≤ 25 °C - requires thermal management via PCB copper pour or heatsinking to maintain lead temperature |
| Dynamic Impedance (ZZT) | 40 Ω at IZT = 20 mA - low impedance enables tight voltage regulation despite load current variation |
| Max Regulator Current (IZM) | 79 mA - maximum continuous DC current before exceeding 5 W power limit at high-end VZ (66 V) |
| Surge Current (IZSM) | 350 A (8.3 ms half-sine) - supports transient overvoltage clamping in surge protection circuits |
| Reverse Leakage (IR) | 0.5 µA at VR = 43 V - minimal leakage preserves efficiency in high-impedance bias networks |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - enables accurate thermal modeling when mounted on FR4 with recommended footprint |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by a band; anode and cathode terminals are accessible via symmetric gull-wing leads compatible with standard reflow profiles (260 °C, 10 s).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lower-potential rail; forms return path for Zener current |
| Cathode | Regulated output node | Banded terminal; maintains stable 60 V relative to anode when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N53xxB equivalent | Direct functional replacement for legacy through-hole 1N5371B with identical electrical specs and test methods |
| RoHS-compliant matte-tin plating | e3 suffix confirms lead-free finish compliant with EU RoHS Directive 2011/65/EU and compatible with Pb-free reflow |
| Gull-wing lead geometry | Enables visual solder joint inspection and reduces tombstoning risk during reflow on FR4 PCBs |
| Level 1 moisture sensitivity | No dry pack or baking required prior to assembly - simplifies handling and reduces manufacturing overhead |
| High surge current rating | 350 A non-repetitive peak supports IEC 61000-4-5 surge immunity designs without external crowbar devices |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback converters using optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Zener reference providing precise 60 V threshold for TL431-type shunt regulator or direct feedback to PWM controller. Use Value: ±10% VZ tolerance and 40 Ω ZZT ensure <±1.5% output voltage drift across line/load/temperature variations. |
Use Scenario: Clamps transient overvoltages on 48 V DC bus in industrial motor drives during switching events. IC Role / Device Role / Timing Role: Two-terminal passive clamp absorbing energy from inductive kickback or ESD events. Use Value: 350 A IZSM rating handles 1 kV/500 A surge waveforms per IEC 61000-4-5 without degradation. |
| Programmable Voltage Reference | DC Link Voltage Monitor |
Use Scenario: Sets adjustable threshold in analog comparator circuits for battery charge termination or brownout detection. IC Role / Device Role / Timing Role: Stable 60 V reference source for op-amp or comparator input biasing. Use Value: Low IR (0.5 µA @ 43 V) minimizes error current injection into high-impedance sensing nodes. |
Use Scenario: Monitors DC link voltage in solar inverters to trigger shutdown if >66 V (high-end VZ + tolerance) is exceeded. IC Role / Device Role / Timing Role: Precision overvoltage detector leveraging sharp Zener knee at 20 mA. Use Value: Defined 60 V ±10% trip point enables deterministic fault response without calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5371B | Identical electrical specs; axial-leaded T-18 package instead of DO-215AA surface mount | Requires through-hole assembly and board space; unsuitable for high-density SMT layouts | Select when legacy through-hole design or manual prototyping is preferred |
| SMBJ5371B | Same Zener voltage and tolerance but in DO-214AA (J-bend) package; RθJA = 90 °C/W vs. 25 °C/W (RθJL) for SMBG | Higher thermal resistance limits continuous power in compact layouts; less suitable for sustained 5 W dissipation | Select when existing DO-214AA footprint is fixed and thermal derating is acceptable |
Compared with SMBG5371AE3/TR13, 1N5371B offers identical regulation performance but demands through-hole assembly, while SMBJ5371B sacrifices thermal efficiency for J-bend compatibility - making SMBG5371AE3/TR13 optimal for high-power-density SMT applications requiring reliable 5 W operation.
Availability
SMBG5371AE3/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, and programmable voltage references requiring stable component supply, RoHS compliance, and gull-wing SMT compatibility.
Supply support for SMBG5371AE3/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 designed specifically for surface-mount voltage regulation in space-constrained, high-reliability power systems where thermal performance, moisture resilience, and JEDEC compatibility are critical.
FAQ
What is the Zener voltage tolerance for SMBG5371AE3/TR13?
The SMBG5371AE3/TR13 has a Zener voltage tolerance of ±10%, indicated by the "A" suffix in the part number. This means its nominal 60 V Zener voltage falls within 54 V to 66 V at the specified test current of 20 mA and lead temperature of 25 °C, as confirmed in the Electrical Characteristics table on page 3 of the Microsemi datasheet T4-LDS-0246-1.
Is SMBG5371AE3/TR13 RoHS compliant?
Yes, SMBG5371AE3/TR13 is RoHS compliant, as indicated by the "e3" suffix. The device uses annealed matte-tin plating per MIL-STD-750 Method 2026 and meets EU Directive 2011/65/EU requirements. Its moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1, eliminating the need for dry packing before assembly.
What is the maximum continuous Zener current for SMBG5371AE3/TR13?
The maximum continuous Zener current (IZM) for SMBG5371AE3/TR13 is 79 mA. This value is calculated based on the high-end Zener voltage (66 V) and rated 5 W power dissipation (IZM = P/VZM), and is validated in the Electrical Characteristics table on page 3 of the Microsemi datasheet T4-LDS-0246-1.
Can SMBG5371AE3/TR13 replace 1N5371B in existing designs?
SMBG5371AE3/TR13 is functionally equivalent to 1N5371B per the datasheet, sharing identical electrical characteristics and test methods. However, it uses a DO-215AA gull-wing package versus the T-18 axial-leaded package of 1N5371B, so PCB layout and assembly process must be updated to accommodate surface-mount placement and reflow soldering.
What is the thermal resistance specification for SMBG5371AE3/TR13?
SMBG5371AE3/TR13 has a junction-to-lead thermal resistance (RθJL) of 25 °C/W, measured when mounted on an FR4 PCB with 1 oz copper and the recommended pad layout. Its junction-to-ambient thermal resistance (RθJA) is 90 °C/W under the same conditions, as stated in the Maximum Ratings table on page 1 of the Microsemi datasheet T4-LDS-0246-1.
SMBG5371AE3/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)
SMBG5371AE3/TR13 FAQ
1.How can I place an order for SMBG5371AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5371AE3/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 SMBG5371AE3/TR13 reliable?
The price and inventory of SMBG5371AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5371AE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5371AE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5371AE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5371AE3/TR13?
SMBG5371AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5371AE3/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 SMBG5371AE3/TR13?
For technical support, including SMBG5371AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5371AE3/TR13 requirements.
6.How does Aetrix verify that SMBG5371AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5371AE3/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 SMBG5371AE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5371AE3/TR13?
All SMBG5371AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5371AE3/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 SMBG5371AE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5371AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5371AE3/TR13 Tags
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MM5Z5V1ST1G
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