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Microchip Technology SMBG5377B/TR13
- Part No.:
- SMBG5377B/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5377B/TR13.pdf
- Description:
- DIODE ZENER 91V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,831
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Product details
Overview
SMBG5377B/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 91 V, ±5% tolerance (B suffix), 15 mA test current (IZT), 75 Ω dynamic impedance (ZZT), and 52.5 mA maximum regulator current (IZM). It operates in power supply overvoltage protection and voltage reference circuits across industrial motor drives and telecom power modules.
For engineers reviewing the SMBG5377B/TR13 datasheet, SMBG5377B/TR13 pinout, SMBG5377B/TR13 application, or SMBG5377B/TR13 equivalent, key selection criteria include Zener voltage accuracy at 15 mA, thermal resistance (RθJA = 90 °C/W on FR4), surge current rating (760 A @ 8.3 ms), moisture sensitivity level (MSL 1), and gull-wing DO-215AA package compatibility with automated reflow.
Technical Context
This device functions as a precision voltage clamp in reverse-biased operation, maintaining stable 91 V regulation across 1–52.5 mA operating current range with minimal voltage drift versus temperature (−65 to +150 °C junction range). Its low dynamic impedance (75 Ω) ensures tight regulation under varying load conditions.
The SMBG5377B/TR13 uses a void-free UL94V-0 epoxy body with matte-tin RoHS-compliant plating, gull-wing leads for visible solder joint inspection, and meets MIL-STD-750 method 2026 solderability requirements. It withstands non-repetitive 8.3 ms half-sine surges up to 760 A without degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 91 V ±5% at 15 mA - defines clamping threshold for overvoltage protection circuits |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - requires thermal management when ambient exceeds 25 °C on FR4 |
| Dynamic Impedance (ZZT) | 75 Ω at 15 mA - determines output voltage variation under load transients |
| Max Regulator Current (IZM) | 52.5 mA - sets upper DC current limit before thermal runaway risk |
| Surge Current (IZSM) | 760 A (8.3 ms half-sine) - enables robust transient suppression in power rails |
| Junction Temperature Range | −65 to +150 °C - supports operation in extended industrial and telecom environments |
| Moisture Sensitivity Level | MSL 1 - no dry pack or bake-out required prior to assembly |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode band marking; two-terminal unidirectional configuration. Cathode (banded end) must be held positive relative to anode for Zener operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-bias input terminal | Connected to higher-potential rail; clamps voltage when reverse voltage exceeds 91 V |
| Anode (unbanded end) | Reference/return terminal | Typically tied to system ground or low-side reference point in shunt regulator topology |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5377B equivalent | Identical electrical specs and test methods - enables drop-in replacement in legacy designs |
| Gull-wing lead form | Enables visual solder joint inspection and reliable reflow yield on fine-pitch PCBs |
| RoHS-compliant matte-tin plating | Meets IPC-J-STD-020B MSL 1 and MIL-STD-750 solderability standards |
| High surge current capability | 760 A non-repetitive peak withstand - suitable for lightning and EFT protection stages |
| Stable regulation over temperature | ±5% VZ tolerance maintained across −65 to +150 °C junction range |
Applications
| Industrial Power Supply Protection | Telecom DC-DC Reference Clamping |
|---|---|
Use Scenario: Overvoltage protection in 48 V telecom rectifier outputs subject to line surges and load dump events. IC Role / Device Role / Timing Role: Shunt Zener clamp placed across output capacitor to limit voltage excursion to ≤91 V. Use Value: Prevents damage to downstream DC-DC converters rated for 100 V max input by clamping transients within safe margin. |
Use Scenario: Precision voltage reference stabilization in isolated flyback feedback networks. IC Role / Device Role / Timing Role: Provides stable 91 V reference for optocoupler biasing in secondary-side regulation loops. Use Value: Maintains regulation accuracy despite input ripple and temperature drift due to low ZZT (75 Ω) and MSL 1 reliability. |
| Motor Drive Bus Voltage Clamp | Test Equipment High-Voltage Calibration |
Use Scenario: Snubberless overvoltage suppression on 72 V DC bus in brushless motor controllers during regenerative braking. IC Role / Device Role / Timing Role: Fast-acting shunt element absorbing inductive kick energy without external RC network. Use Value: Eliminates need for snubber components while handling 760 A surge peaks per IEC 61000-4-5 Level 4 compliance testing. |
Use Scenario: Fixed-voltage calibration standard in portable HV multimeters and insulation testers. IC Role / Device Role / Timing Role: Stable 91 V reference source traceable to JEDEC 1N5377B metrology baseline. Use Value: Enables field recalibration with ±5% accuracy maintained over 1000+ thermal cycles due to DO-215AA mechanical stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5377B | Axial-leaded T-18 package; identical VZ, IZT, ZZT, and IZM specs; RθJA ≈ 50 °C/W (lower thermal resistance but through-hole mounting) | Requires through-hole PCB layout and wave soldering; unsuitable for high-density SMT assemblies | Select when legacy board reuse or manual prototyping favors axial leads and higher thermal dissipation is needed. |
| SMBJ5377B | DO-214AA J-bend package; same electrical specs; RθJA = 90 °C/W (identical), but different pad layout and lower surge rating (600 A vs. 760 A) | Limited surge robustness in high-energy transient environments; less visible solder joints than gull-wing | Choose only if existing DO-214AA footprint constraints prohibit DO-215AA adoption and surge stress is below 600 A. |
Compared with 1N5377B and SMBJ5377B, the SMBG5377B/TR13 uniquely combines gull-wing manufacturability, MSL 1 handling, 760 A surge rating, and JEDEC-equivalent performance-making it optimal for new SMT power protection designs requiring production scalability and high-reliability clamping.
Availability
SMBG5377B/TR13 is available at Aetrix Electronics and suitable for industrial power supply protection, telecom DC-DC reference clamping, and motor drive bus voltage clamp applications requiring stable component supply, consistent Zener voltage tolerance, and high-surge survivability.
Supply support for SMBG5377B/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 (now part of Microchip Technology) is a semiconductor company specializing in high-reliability analog, RF, and discrete components for aerospace, defense, and industrial markets.
The SMBG53xxB series was designed specifically for surface-mount Zener regulation in space-constrained, high-surge industrial power systems-emphasizing JEDEC equivalence, MSL 1 handling, and gull-wing process compatibility.
FAQ
What is the Zener voltage tolerance and test current for SMBG5377B/TR13?
The SMBG5377B/TR13 has a nominal Zener voltage of 91 V with ±5% tolerance (denoted by the "B" suffix) and is specified at a test current (IZT) of 15 mA. This tolerance ensures predictable clamping behavior in overvoltage protection circuits where precise threshold control is required. The SMBG5377B/TR13 maintains this specification across its full operating temperature range.
Does SMBG5377B/TR13 require dry packing before reflow soldering?
No, the SMBG5377B/TR13 has a moisture sensitivity level (MSL) of 1 per IPC/JEDEC J-STD-020B, meaning it does not require dry packing or baking prior to reflow soldering. Its void-free UL94V-0 epoxy encapsulation and RoHS-compliant matte-tin plating ensure robust solderability without moisture-related popcorning risks during standard reflow profiles.
What is the maximum non-repetitive surge current rating for SMBG5377B/TR13?
The SMBG5377B/TR13 is rated for a maximum non-repetitive surge current (IZSM) of 760 A at an 8.3 ms half-sine waveform. This rating reflects its capability to absorb high-energy transients-such as those from lightning-induced surges or inductive switching-without parametric shift or failure, making it suitable for primary-side protection in industrial power systems.
How does the thermal resistance of SMBG5377B/TR13 affect its power derating?
The SMBG5377B/TR13 has a junction-to-ambient thermal resistance (RθJA) of 90 °C/W when mounted on an FR4 PCB with recommended footprint. At ambient temperatures above 25 °C, its 5.0 W power rating must be linearly derated-e.g., at 75 °C ambient, maximum allowable power drops to ~2.2 W. Proper copper pour and thermal vias are recommended to maintain safe junction temperatures.
Is SMBG5377B/TR13 compatible with JEDEC-standard 1N5377B designs?
Yes, the SMBG5377B/TR13 is explicitly stated in Microsemi documentation as electrically and functionally equivalent to the axial-leaded 1N5377B, with identical Zener voltage, test current, dynamic impedance, and surge ratings. While package and mounting differ, circuit-level substitution is supported without redesign-provided thermal and layout constraints are reviewed for the DO-215AA gull-wing footprint.
SMBG5377B/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:
- ±5%
- 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)
SMBG5377B/TR13 FAQ
1.How can I place an order for SMBG5377B/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5377B/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 SMBG5377B/TR13 reliable?
The price and inventory of SMBG5377B/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5377B/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5377B/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5377B/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5377B/TR13?
SMBG5377B/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5377B/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 SMBG5377B/TR13?
For technical support, including SMBG5377B/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5377B/TR13 requirements.
6.How does Aetrix verify that SMBG5377B/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5377B/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 SMBG5377B/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5377B/TR13?
All SMBG5377B/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5377B/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 SMBG5377B/TR13 part is unused and in its original packaging.
Return procedure for SMBG5377B/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5377B/TR13 Tags
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