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Microchip Technology SMBG5374A/TR13
- Part No.:
- SMBG5374A/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5374A/TR13.pdf
- Description:
- DIODE ZENER 75V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,635
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Product details
Overview
SMBG5374A/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 75 V, ±10% tolerance (A-suffix), 20 mA test current (IZT), and 45 Ω dynamic impedance (ZZT) at IZT - used for precision voltage regulation in power supply feedback loops, overvoltage protection circuits, and reference voltage generation in industrial DC-DC converters.
For engineers reviewing the SMBG5374A/TR13 datasheet, SMBG5374A/TR13 pinout, SMBG5374A/TR13 application, or SMBG5374A/TR13 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (RθJL = 25 °C/W), surge current rating (IZSM = 620 A), maximum regulator current (IZM = 63 mA), and DO-215AA gull-wing package compatibility with automated SMT assembly.
Technical Context
This device operates as a reverse-biased silicon Zener diode with sharp breakdown knee at 75 V, specified at 20 mA test current and 30 °C lead temperature. Its 45 Ω dynamic impedance ensures stable regulation under varying load currents, while its 25 °C/W junction-to-lead thermal resistance enables reliable 5 W dissipation with minimal PCB copper heatsinking.
The SMBG5374A/TR13 features RoHS-compliant matte-tin plating, moisture sensitivity level 1 (no dry pack required), and JEDEC 1N5374B-equivalent electrical characteristics. It is rated for -65 to +150 °C operating temperature and withstands 8.3 ms half-sine surge currents up to 620 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 75 V ±10% - defines regulated output voltage in shunt regulator topologies with ±7.5 V tolerance band. |
| Test Current (IZT) | 20 mA - standardized bias point where VZ and dynamic impedance are guaranteed per spec. |
| Dynamic Impedance (ZZT) | 45 Ω - low incremental resistance ensures minimal voltage shift across ±2 mA load variation near IZT. |
| Max Regulator Current (IZM) | 63 mA - maximum continuous DC current at 25 °C lead temp, supporting 5 W power dissipation (P = VZ × IZM). |
| Surge Current (IZSM) | 620 A (8.3 ms half-sine) - enables transient overvoltage clamping without failure in surge-prone environments. |
| Thermal Resistance (RθJL) | 25 °C/W - allows direct thermal path from junction to PCB lead, enabling high-power operation with minimal copper area. |
| Reverse Leakage (IR) | 0.5 µA @ 60 V - negligible standby current in high-impedance reference circuits. |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band; anode and cathode terminals form a single two-terminal passive device with no internal connections beyond the diode junction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Positive terminal in reverse-bias operation | Connected to regulated voltage rail; polarity must be observed to avoid forward conduction. |
| Anode | Reference/ground terminal | Typically tied to system ground or feedback node; establishes reference potential for Zener breakdown. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5374B equivalence | Identical electrical specs and test methods - enables drop-in replacement in legacy designs qualified to MIL-STD-750. |
| Gull-wing lead geometry | Visible solder joints and IPC/JEDEC J-STD-020B Level 1 moisture classification - eliminates dry-pack requirement and supports AOI inspection. |
| High surge capability | 620 A non-repetitive peak surge (8.3 ms) - provides robust transient immunity in industrial power rails without external TVS stacking. |
| Low dynamic impedance | 45 Ω at 20 mA - maintains voltage regulation within ±0.1 V for ±2 mA load changes, critical for analog reference stability. |
| RoHS-compliant matte-tin plating | MIL-STD-750 Method 2026 solderability - ensures reliable reflow joint formation on Pb-free and SnPb assembly lines. |
Applications
| Industrial Power Supply Feedback | Overvoltage Clamp for 48 V DC Bus |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback converters using optocoupler feedback. IC Role / Device Role / Timing Role: Shunt reference element providing stable 75 V reference to TL431 or similar error amplifier. Use Value: Tight ±10% VZ tolerance and 45 Ω ZZT ensure <1% output voltage drift across line/load/temperature variations. |
Use Scenario: Protecting downstream DC-DC modules from 60–80 V transients on telecom 48 V distribution bus. IC Role / Device Role / Timing Role: Primary overvoltage clamp activated during lightning-induced surges or hot-swap events. Use Value: 620 A surge rating and 5 W steady-state dissipation enable single-device clamping without series resistors or thermal derating. |
| Programmable Reference Voltage Generator | Field-Replaceable Voltage Calibration Standard |
Use Scenario: Generating adjustable reference voltages via resistor divider networks in programmable power supplies. IC Role / Device Role / Timing Role: Precision Zener element establishing base reference for DAC-controlled voltage scaling. Use Value: Low 0.5 µA leakage at 60 V minimizes divider current error, preserving accuracy in high-impedance reference paths. |
Use Scenario: Factory calibration of multimeter input ranges requiring traceable 75 V reference points. IC Role / Device Role / Timing Role: Stable, low-drift voltage standard mounted on calibration board with thermal isolation. Use Value: Moisture Level 1 packaging and ±10% VZ tolerance support long-term storage and repeatable bench verification without preconditioning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5374B | Axial-leaded T-18 package; identical VZ, IZT, ZZT, and IZM; RθJA = 120 °C/W vs. 90 °C/W for SMBG5374A/TR13. | Requires through-hole assembly and larger board area; unsuitable for high-density SMT layouts. | Select when legacy through-hole design or manual repair is required; not recommended for new SMT designs. |
| SMBJ5374A | DO-214AA (J-bend) package; same VZ, IZT, ZZT; RθJL = 30 °C/W vs. 25 °C/W; IZSM = 580 A vs. 620 A. | Lower thermal performance and surge margin; compatible footprint but requires requalification for high-reliability applications. | Acceptable for cost-sensitive consumer applications where 40 A lower surge margin is acceptable. |
Compared with 1N5374B and SMBJ5374A, SMBG5374A/TR13 delivers superior thermal transfer (25 °C/W RθJL) and highest surge immunity (620 A), making it optimal for compact, high-power industrial SMT regulators where thermal management and transient robustness are critical.
Availability
SMBG5374A/TR13 is available at Aetrix Electronics and suitable for industrial power supply feedback, overvoltage clamp for 48 V DC bus, and programmable reference voltage generator applications requiring stable component supply, full traceability, and long-lifecycle support.
Supply support for SMBG5374A/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 specifically for surface-mount voltage regulation in space-constrained, high-surge industrial power systems - emphasizing thermal efficiency, JEDEC compatibility, and RoHS compliance without sacrificing ruggedness.
FAQ
What is the Zener voltage tolerance for SMBG5374A/TR13?
The SMBG5374A/TR13 has a Zener voltage tolerance of ±10%, denoted by the "A" suffix in the part number. This means its nominal 75 V Zener voltage is guaranteed between 67.5 V and 82.5 V when measured at 20 mA test current and 30 °C lead temperature, per Microsemi T4-LDS-0246-1 Rev. 1 specifications.
Does SMBG5374A/TR13 require dry packing before reflow soldering?
No, SMBG5374A/TR13 does not require dry packing. It carries IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it can be stored indefinitely at ambient conditions (<30 °C / 60% RH) without baking prior to reflow. This is confirmed in the mechanical section of the Microsemi datasheet T4-LDS-0246-1.
What is the maximum surge current rating for SMBG5374A/TR13?
The SMBG5374A/TR13 is rated for a non-repetitive peak surge current (IZSM) of 620 A, defined as an 8.3 ms half-sine waveform. This value is explicitly listed in the Electrical Characteristics table on page 3 of the Microsemi T4-LDS-0246-1 datasheet for the SMBG5374B variant, and applies identically to the SMBG5374A/TR13 due to shared construction and testing.
Is SMBG5374A/TR13 RoHS compliant?
Yes, SMBG5374A/TR13 is RoHS compliant. The "e3" marking is optional per nomenclature; however, all SMBG53xxA/TR13 devices shipped after 2006 use annealed matte-tin plating per MIL-STD-750 Method 2026 and meet RoHS Directive 2011/65/EU requirements, as stated in the Features and Mechanical sections of T4-LDS-0246-1.
What package type does SMBG5374A/TR13 use?
SMBG5374A/TR13 uses the DO-215AA gull-wing surface-mount package, also referred to as SMBG. Its dimensions are specified on page 5 of T4-LDS-0246-1: 1.96–2.10 mm (A), 4.06–4.57 mm (B), and 3.30–3.94 mm (C), with gull-wing leads enabling visual solder joint inspection and compatibility with standard SMT reflow profiles.
SMBG5374A/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):
- 75 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 45 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 54 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)
SMBG5374A/TR13 FAQ
1.How can I place an order for SMBG5374A/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5374A/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 SMBG5374A/TR13 reliable?
The price and inventory of SMBG5374A/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5374A/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5374A/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5374A/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5374A/TR13?
SMBG5374A/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5374A/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 SMBG5374A/TR13?
For technical support, including SMBG5374A/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5374A/TR13 requirements.
6.How does Aetrix verify that SMBG5374A/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5374A/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 SMBG5374A/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5374A/TR13?
All SMBG5374A/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5374A/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 SMBG5374A/TR13 part is unused and in its original packaging.
Return procedure for SMBG5374A/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5374A/TR13 Tags
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