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Microchip Technology SMBG5371B/TR13
- Part No.:
- SMBG5371B/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5371B/TR13.pdf
- Description:
- DIODE ZENER 60V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,810
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Product details
Overview
SMBG5371B/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 60 V, ±5% tolerance (B 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 SMBG5371B/TR13 datasheet, SMBG5371B/TR13 pinout, SMBG5371B/TR13 application, or SMBG5371B/TR13 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (RθJL = 25 °C/W), surge current rating (IZSM = 350 A), moisture sensitivity level (MSL Level 1), and RoHS-compliant matte-tin plating.
Technical Context
This device functions as a two-terminal voltage reference operating in reverse breakdown, maintaining stable output voltage across wide current (1–79 mA) and temperature (−65 to +150 °C) ranges. Its low dynamic impedance (40 Ω at 20 mA) ensures minimal voltage variation under load transients.
The DO-215AA gull-wing package enables visible solder joints and supports high-density PCB layouts. Thermal performance is defined by RθJL = 25 °C/W (junction-to-lead) and RθJA = 90 °C/W (junction-to-ambient on FR4 with recommended footprint), enabling reliable 5 W operation only when lead temperature (TL) is maintained below 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 60 V ±5% at 20 mA - defines precise clamping threshold for overvoltage protection and feedback reference. |
| Power Dissipation (PD) | 5.0 W @ TL < 25 °C - requires thermal management via copper pour or heatsinked leads to sustain full rating. |
| Dynamic Impedance (ZZT) | 40 Ω at IZT = 20 mA - determines voltage regulation stability under varying load currents. |
| Max Regulator Current (IZM) | 79 mA - maximum continuous DC current before exceeding 5 W power limit at VZ = 63 V (upper tolerance). |
| Surge Current (IZSM) | 350 A (8.3 ms half-sine) - withstands transient overvoltages without degradation. |
| Junction Temperature Range | −65 to +150 °C - supports operation in industrial and automotive under-hood environments. |
| Moisture Sensitivity | IPC/JEDEC Level 1 - no dry pack or baking required prior to reflow. |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band; operated with banded end positive relative to opposite end. Leads are tin-lead or RoHS-compliant matte-tin plated per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-biased reference terminal | Connected to system ground or lower-potential node; carries full regulator current during conduction. |
| Cathode | Zener voltage output terminal | Provides regulated 60 V reference; marked with band; connected to feedback node or protected circuit input. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5371B equivalent | Identical electrical characteristics and testing to through-hole 1N5371B - enables drop-in replacement in legacy designs. |
| Gull-wing lead form | Enables visual solder joint inspection and reduces tombstoning risk during reflow on fine-pitch PCBs. |
| Level 1 moisture sensitivity | Eliminates dry-pack requirement and baking steps - reduces manufacturing cost and handling complexity. |
| High surge current rating | 350 A non-repetitive peak withstand capability - protects downstream circuitry from lightning-induced or inductive-switching transients. |
| Stable voltage vs. current | Low ZZT (40 Ω) and flat VZ vs. IZ curve - maintains tight regulation across 1–79 mA operating range. |
Applications
| Switch-Mode Power Supply Feedback | Industrial Motor Drive Overvoltage Clamp |
|---|---|
Use Scenario: Integrated into optocoupler-based feedback loop of isolated 48 V DC-DC converter to regulate output voltage. IC Role / Device Role / Timing Role: Zener reference diode providing stable 60 V threshold for TL431 shunt regulator bias network. Use Value: Tight ±5% VZ tolerance and low ZZT ensure ±1% output regulation accuracy despite line/load variations. | Use Scenario: Placed across DC bus of 3-phase IGBT inverter driving 15 kW pump motor. IC Role / Device Role / Timing Role: Transient voltage suppressor clamping bus overvoltage spikes caused by regenerative braking or switching noise. Use Value: 350 A IZSM rating absorbs 100 mJ surge energy without failure, preventing IGBT destruction during fault conditions. |
| Programmable Logic Controller Input Protection | Telecom Line Card Surge Suppression |
Use Scenario: Protecting 24 V digital input channel of PLC against field-wiring induced surges and ESD events. IC Role / Device Role / Timing Role: Primary overvoltage clamp limiting input voltage to safe levels before signal conditioning circuitry. Use Value: MSL Level 1 compatibility allows direct placement in automated SMT lines without moisture mitigation overhead. | Use Scenario: Front-end protection on -48 V telecom power interface subjected to GR-1089 Class B lightning surges. IC Role / Device Role / Timing Role: Secondary clamping element working with GDT and TVS array to limit residual voltage to <75 V. Use Value: 60 V VZ provides optimal coordination with upstream protection devices while maintaining low leakage (<0.5 µA at 48 V). |
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 ±5% tolerance. | Requires axial-leaded PCB layout and wave soldering; not suitable for high-density SMT assembly. | Select when retrofitting legacy through-hole boards or where manual repairability is prioritized over board space. |
| SMBJ5371B | Same DO-214AA (J-bend) package; identical electrical specs but different mechanical footprint and thermal path (RθJA = 80 °C/W). | Better suited for high-volume pick-and-place but requires revised pad layout and has slightly higher junction-to-ambient resistance. | Select when existing design uses DO-214AA footprint or when tighter RθJA is needed with optimized copper pour. |
Compared with SMBG5371B/TR13, 1N5371B offers identical regulation performance in through-hole format but sacrifices SMT manufacturability, while SMBJ5371B retains surface-mount compatibility with altered thermal and mechanical behavior-neither is pin-compatible due to differing packages.
Availability
SMBG5371B/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial motor drives, and programmable logic controller input protection requiring stable component supply, consistent Zener voltage tolerance, and high surge immunity.
Supply support for SMBG5371B/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, RF solutions, and discrete power components.
The SMBG53xxB series was designed specifically for surface-mount voltage regulation and transient suppression in industrial, telecom, and power conversion systems where reliability, surge robustness, and MSL Level 1 handling are critical.
FAQ
What is the Zener voltage tolerance and test current for SMBG5371B/TR13?
The SMBG5371B/TR13 has a Zener voltage of 60 V with ±5% tolerance (denoted by the "B" suffix) and is specified at a test current (IZT) of 20 mA. This tolerance ensures the actual breakdown voltage falls between 57 V and 63 V under standard test conditions at TL = 25 °C, making it suitable for precision feedback and clamping applications where moderate accuracy is required.
Does SMBG5371B/TR13 require dry packing or baking before reflow soldering?
No, SMBG5371B/TR13 does not require dry packing or baking before reflow soldering. It is rated IPC/JEDEC J-STD-020B Moisture Sensitivity Level 1, meaning it can be stored indefinitely at ambient conditions and placed directly into reflow ovens without preconditioning-reducing manufacturing overhead and eliminating moisture-related defects.
What is the maximum continuous Zener current (IZM) for SMBG5371B/TR13 and how is it calculated?
The maximum continuous Zener current (IZM) for SMBG5371B/TR13 is 79 mA. This value is derived from the rated 5 W power dissipation and the upper limit of the Zener voltage tolerance: IZM = PD / VZM = 5.0 W / 63 V ≈ 79 mA. Operation above this current at full VZ risks exceeding the power rating unless thermal management lowers junction temperature.
How does the DO-215AA package of SMBG5371B/TR13 differ from DO-214AA (SMBJ) in thermal performance?
The DO-215AA package of SMBG5371B/TR13 has a junction-to-lead thermal resistance (RθJL) of 25 °C/W and junction-to-ambient (RθJA) of 90 °C/W on FR4, whereas the DO-214AA (SMBJ) variant has RθJA = 80 °C/W but different lead geometry. The gull-wing leads of DO-215AA improve solder joint visibility and reduce tombstoning, but its higher RθJA means more copper area is needed to sustain 5 W operation compared to DO-214AA.
Is SMBG5371B/TR13 RoHS compliant and what plating option does it use?
Yes, SMBG5371B/TR13 is RoHS compliant and uses annealed matte-tin plating per MIL-STD-750 method 2026. The "TR13" suffix indicates tape-and-reel packaging per EIA-481-1-A (12 mm tape), and the device meets lead-free soldering requirements up to 260 °C for 10 seconds, supporting modern Pb-free reflow profiles.
SMBG5371B/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:
- ±5%
- 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)
SMBG5371B/TR13 FAQ
1.How can I place an order for SMBG5371B/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5371B/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 SMBG5371B/TR13 reliable?
The price and inventory of SMBG5371B/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5371B/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5371B/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5371B/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5371B/TR13?
SMBG5371B/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5371B/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 SMBG5371B/TR13?
For technical support, including SMBG5371B/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5371B/TR13 requirements.
6.How does Aetrix verify that SMBG5371B/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5371B/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 SMBG5371B/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5371B/TR13?
All SMBG5371B/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5371B/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 SMBG5371B/TR13 part is unused and in its original packaging.
Return procedure for SMBG5371B/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5371B/TR13 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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