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Microchip Technology SMBG5377A/TR13
- Part No.:
- SMBG5377A/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5377A/TR13.pdf
- Description:
- DIODE ZENER 91V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,647
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Product details
Overview
SMBG5377A/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 91 V, ±10% tolerance (A suffix), 15 mA test current (IZT), 75 Ω dynamic impedance (ZZT), and 52.5 mA maximum regulator current (IZM) at TL < 25 °C. It operates in voltage regulation and overvoltage protection circuits for industrial power supplies and DC-DC converters.
For engineers reviewing the SMBG5377A/TR13 datasheet, SMBG5377A/TR13 pinout, SMBG5377A/TR13 application, or SMBG5377A/TR13 equivalent, key selection criteria include its DO-215AA gull-wing package, 91 V breakdown voltage, 5 W power rating at lead temperature ≤25 °C, and RoHS-compliant matte-tin plating - all critical for high-reliability, low-profile, and thermally constrained designs.
Technical Context
This device functions as a precision shunt voltage regulator in reverse-biased mode, maintaining stable output voltage across wide operating current (15 mA IZT to 52.5 mA IZM) and temperature ranges (–65 °C to +150 °C). Its 75 Ω dynamic impedance ensures minimal voltage variation under load transients.
The SMBG5377A/TR13 uses a void-free UL94V-0 epoxy case with cathode band polarity marking and is rated for 260 °C soldering (10 s). Thermal resistance is 25 °C/W junction-to-lead and 90 °C/W junction-to-ambient on FR4 with recommended footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 91 V ±10% - regulates at 81.9–100.1 V under 15 mA test current, suitable for 90 V rail clamping. |
| Power Dissipation (PD) | 5.0 W at TL ≤ 25 °C - requires thermal management when mounted on PCB without heatsink. |
| Dynamic Impedance (ZZT) | 75 Ω at IZT = 15 mA - limits output voltage deviation to ~1.1 V per 15 mA current change. |
| Max Regulator Current (IZM) | 52.5 mA - defines absolute DC current limit before thermal runaway at rated power. |
| Junction Temperature Range | –65 °C to +150 °C - supports operation in extended industrial and automotive under-hood environments. |
| Thermal Resistance (RθJL) | 25 °C/W - enables direct thermal path to PCB copper; 2.0 W dissipation possible at TL = 75 °C. |
Pinout & Package
Package: DO-215AA gull-wing surface-mount package (JEDEC standard), 0.1 g weight, moisture sensitivity level 1 (no dry pack required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-voltage reference node | Connected to circuit ground or lower-potential rail during Zener operation. |
| Cathode | Reverse-bias input / regulated output node | Marked by band; connected to unregulated input; delivers stable 91 V to load when reverse-biased above VZ. |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount JEDEC 1N53xxB equivalent | Direct replacement for legacy axial 1N5377A with identical electrical specs and test methods. |
| Gull-wing lead form | Enables visual solder joint inspection and reliable reflow attachment on high-density PCBs. |
| RoHS-compliant matte-tin plating | Meets IPC-J-STD-020B Level 1 moisture sensitivity; no baking required prior to assembly. |
| High surge current rating | 760 A non-repetitive half-sine (8.3 ms) - protects downstream circuitry from transient overvoltages. |
Applications
| Industrial Power Supply Regulation | Automotive ECU Overvoltage Protection |
|---|---|
Use Scenario: Stabilizes 90 V intermediate bus in programmable logic controller (PLC) power modules. IC Role / Device Role / Timing Role: Shunt regulator providing precise 91 V reference and absorbing excess current during line surges. Use Value: Maintains ±10% regulation over 15–52.5 mA load range and –40 °C to +105 °C ambient, reducing need for active feedback compensation. |
Use Scenario: Clamps load-dump transients (>120 V) on 24 V automotive control units. IC Role / Device Role / Timing Role: Passive overvoltage clamp placed across main DC input to suppress ISO 7637-2 Pulse 5a events. Use Value: Withstands 760 A surge (8.3 ms) without degradation, eliminating need for additional TVS stages in cost-sensitive ECUs. |
| Telecom DC-DC Converter Feedback | Test Equipment Voltage Reference |
Use Scenario: Sets output voltage in isolated flyback converter for telecom base station backplane supplies. IC Role / Device Role / Timing Role: Precision Zener in optocoupler feedback loop to regulate 91 V secondary output. Use Value: 75 Ω dynamic impedance minimizes output ripple propagation into feedback path, improving regulation accuracy to ±1.5%. |
Use Scenario: Provides stable 91 V calibration reference in portable multimeter high-voltage ranges. IC Role / Device Role / Timing Role: Low-drift shunt reference operating at fixed 15 mA bias in battery-powered metrology circuit. Use Value: Level 1 moisture rating and ±10% VZ tolerance ensure repeatable performance after storage and reflow, supporting factory recalibration intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5377A | Axial-leaded T-18 package; identical VZ (91 V), IZT (15 mA), ZZT (75 Ω), but higher RθJA (~120 °C/W) and no gull-wing visibility. | Requires through-hole assembly; unsuitable for SMT-only lines or high-density layouts. | Select when legacy board redesign is impractical or manual repair access is needed. |
| SMBJ5377A | DO-214AA J-bend package; same electrical specs but 30% higher RθJA (117 °C/W); different pad layout and solder profile. | Limited thermal performance in high-power density applications; not drop-in compatible with SMBG footprint. | Choose only if existing design uses SMBJ footprint and thermal derating allows 3.5 W max at TL = 25 °C. |
Compared with SMBG5377A/TR13, the 1N5377A offers mechanical serviceability but sacrifices SMT efficiency and thermal performance, while the SMBJ5377A shares electrical behavior but introduces thermal and layout constraints that reduce usable power margin in compact designs.
Availability
SMBG5377A/TR13 is available at Aetrix Electronics and suitable for industrial power supply regulation, automotive ECU overvoltage protection, and telecom DC-DC converter feedback requiring stable component supply, consistent RoHS compliance, and verified gull-wing solderability.
Supply support for SMBG5377A/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 radiation-hardened components for aerospace, defense, and industrial markets.
The SMBG53xxA/B series was designed specifically for surface-mount voltage regulation in space-constrained, thermally demanding applications where legacy axial Zeners were inadequate - emphasizing manufacturability, visual inspection, and robust surge handling.
FAQ
What is the Zener voltage tolerance of SMBG5377A/TR13?
The SMBG5377A/TR13 has a ±10% Zener voltage tolerance, meaning its breakdown voltage falls between 81.9 V and 100.1 V at 15 mA test current and 25 °C. This tolerance is defined by the "A" suffix in the part number and is verified per JEDEC 1N53xx test standards. The SMBG5377A/TR13 maintains this specification across its full operating temperature range.
Can SMBG5377A/TR13 be used in place of 1N5377A?
Yes, the SMBG5377A/TR13 is electrically equivalent to the axial 1N5377A, sharing identical Zener voltage (91 V), test current (15 mA), dynamic impedance (75 Ω), and surge rating (760 A). However, the SMBG5377A/TR13 uses a DO-215AA gull-wing package and requires SMT assembly - it is not mechanically interchangeable without PCB redesign.
What is the maximum continuous power dissipation for SMBG5377A/TR13?
The SMBG5377A/TR13 is rated for 5.0 W continuous power dissipation when lead temperature (TL) is maintained at or below 25 °C. At higher lead temperatures, power must be derated linearly per the curve in Figure 1 of the datasheet, reaching zero at TL = 175 °C. On FR4 with recommended footprint, ambient-limited dissipation is 1.38 W at TA = 25 °C.
Is SMBG5377A/TR13 RoHS compliant?
Yes, the SMBG5377A/TR13 is RoHS compliant, using annealed matte-tin plating per JEDEC J-STD-020B Level 1 moisture sensitivity classification. No dry pack is required prior to reflow. The "TR13" suffix indicates tape-and-reel packaging per EIA-481-1-A, and the device meets exemption 7a for lead in high-melting-temperature solder alloys.
What is the surge current rating of SMBG5377A/TR13?
The SMBG5377A/TR13 has a non-repetitive peak surge current (IZSM) rating of 760 A for an 8.3 ms half-sine waveform, as specified in the Electrical Characteristics table. This rating applies under defined test conditions and enables the SMBG5377A/TR13 to absorb transient energy in automotive load-dump and industrial switching surge events without failure.
SMBG5377A/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):
- 91 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 75 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 65.5 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)
SMBG5377A/TR13 FAQ
1.How can I place an order for SMBG5377A/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5377A/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 SMBG5377A/TR13 reliable?
The price and inventory of SMBG5377A/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5377A/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5377A/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5377A/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5377A/TR13?
SMBG5377A/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5377A/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 SMBG5377A/TR13?
For technical support, including SMBG5377A/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5377A/TR13 requirements.
6.How does Aetrix verify that SMBG5377A/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5377A/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 SMBG5377A/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5377A/TR13?
All SMBG5377A/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5377A/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 SMBG5377A/TR13 part is unused and in its original packaging.
Return procedure for SMBG5377A/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5377A/TR13 Tags
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