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Microchip Technology SMBG5378AE3/TR13
- Part No.:
- SMBG5378AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5378AE3/TR13.pdf
- Description:
- DIODE ZENER 100V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,333
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Product details
Overview
SMBG5378AE3/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 100 V, ±10% tolerance (A suffix), and DO-215AA gull-wing package. It delivers stable voltage regulation at 12 mA test current, supports up to 47.5 mA maximum regulator current, and operates across –65 °C to +150 °C junction temperature for industrial power supply reference applications.
For engineers reviewing the SMBG5378AE3/TR13 datasheet, SMBG5378AE3/TR13 pinout, SMBG5378AE3/TR13 application, or SMBG5378AE3/TR13 equivalent, key selection criteria include its 100 V Zener voltage, 5 W power rating at lead temperature <25 °C, ±10% voltage tolerance, RoHS-compliant matte-tin plating, and DO-215AA gull-wing thermal performance (RθJL = 25 °C/W).
Technical Context
This device functions as a precision shunt voltage regulator in DC bias networks, operating in reverse breakdown with minimal dynamic impedance (90 Ω at 12 mA). Its low leakage (<0.5 µA at 72 V) and stable knee behavior (ZZK = 44 Ω at 1.0 mA) enable accurate reference generation under varying load conditions.
The DO-215AA gull-wing package provides visible solder joints and Level 1 moisture sensitivity (no dry pack required), while thermal resistance to lead (25 °C/W) supports reliable power dissipation when mounted on FR4 with recommended footprint - critical for high-surge industrial protection circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 100 V ±10% - defines regulated output voltage at 12 mA; high-voltage reference for SMPS feedback or overvoltage clamp. |
| Test Current (IZT) | 12 mA - standardized bias point for VZ measurement; ensures repeatable regulation accuracy. |
| Max Regulator Current (IZM) | 47.5 mA - maximum continuous DC current at rated power; determines usable current range before thermal derating. |
| Dynamic Impedance (ZZT) | 90 Ω - small-signal AC impedance at IZT; lower value improves regulation stability against load transients. |
| Junction-to-Lead Thermal Resistance | 25 °C/W - enables 5 W power dissipation with ≤125 °C temperature rise above lead; critical for PCB layout heat path design. |
| Reverse Leakage (IR) | <0.5 µA at 72 V - ensures minimal standby current in high-impedance bias networks. |
| Surge Current (IZSM) | 800 A (8.3 ms half-sine) - withstands transient overvoltage events without degradation. |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band; terminals are anode and cathode only - no internal circuitry or additional pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Regulated output node | Connected to positive rail in shunt configuration; voltage referenced to this terminal. |
| Anode | Reference/ground node | Connected to system ground or return path; establishes reference potential for regulation. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5378A equivalent | Identical electrical specs and testing to legacy through-hole 1N5378A - simplifies SMT migration without redesign. |
| RoHS-compliant matte-tin plating | e3 suffix confirms lead-free finish compliant with IPC/JEDEC J-STD-020B Level 1 - eliminates dry pack requirement and supports automated reflow. |
| Gull-wing lead form | DO-215AA package enables visual solder joint inspection and robust mechanical attachment on FR4 boards. |
| High surge capability | 800 A non-repetitive surge rating (8.3 ms) - protects downstream circuitry from lightning-induced or inductive switching transients. |
| Stable regulation over temperature | –65 °C to +150 °C operating range with minimal VZ drift - suitable for automotive under-hood and industrial control environments. |
Applications
| Industrial Power Supply Feedback | DC Bus Overvoltage Clamp |
|---|---|
|
Use Scenario: Stabilizing error amplifier reference in isolated flyback or forward converter feedback loop. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 100 V threshold for optocoupler-driven regulation. Use Value: Maintains ±10% output voltage accuracy across line/load/temperature with 90 Ω dynamic impedance limiting error amplifier gain variation. |
Use Scenario: Clamping 400 V DC bus during regenerative braking in motor drives. IC Role / Device Role / Timing Role: Transient voltage suppressor absorbing energy spikes exceeding 100 V threshold. Use Value: Withstands 800 A surge (8.3 ms) without failure, preventing IGBT gate driver damage during fault conditions. |
| Programmable Voltage Monitor | High-Voltage Sensor Biasing |
|
Use Scenario: Setting trip point for comparator-based overvoltage detection in battery management systems. IC Role / Device Role / Timing Role: Precision reference source defining 100 V threshold for comparator input. Use Value: Low 0.5 µA leakage at 72 V ensures minimal current draw in high-impedance divider networks, preserving measurement accuracy. |
Use Scenario: Providing stable bias voltage to photodiode or ionization sensor in analytical instrumentation. IC Role / Device Role / Timing Role: High-voltage, low-noise DC reference enabling consistent sensor excitation. Use Value: 25 °C/W junction-to-lead thermal resistance allows sustained 5 W operation with passive heatsinking - critical for long-term sensor calibration stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5378A | Through-hole DO-41 package; identical VZ, IZT, ZZT, and IZM specs; non-RoHS tin-lead plating. | Requires axial-leaded PCB footprint and wave soldering; not suitable for high-density SMT assembly. | Select when legacy through-hole manufacturing or mixed-technology boards are used; verify thermal pad layout compatibility. |
| SMBG5378BE3/TR13 | Same DO-215AA package and RoHS compliance, but ±5% VZ tolerance (B suffix); ZZT = 90 Ω unchanged; IZM = 43 mA (lower due to tighter tolerance). | Better regulation accuracy needed in precision references; reduced max current limits worst-case power handling. | Choose for applications requiring tighter voltage tolerance where 43 mA IZM suffices; avoid if full 47.5 mA headroom is required. |
Compared with SMBG5378AE3/TR13, 1N5378A offers identical regulation performance but requires through-hole assembly, while SMBG5378BE3/TR13 trades ±10% tolerance for ±5% accuracy at slightly reduced current capacity - both demand careful thermal and layout validation for target use cases.
Availability
SMBG5378AE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, DC bus protection circuits, and high-voltage sensor biasing requiring stable component supply, RoHS compliance, and surface-mount manufacturability.
Supply support for SMBG5378AE3/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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The SMBG53xx series targets surface-mount voltage regulation in space-constrained, high-surge environments - engineered for drop-in replacement of legacy 1N53xx Zeners while meeting modern RoHS and thermal requirements.
FAQ
What is the Zener voltage tolerance for SMBG5378AE3/TR13?
The "A" suffix in SMBG5378AE3/TR13 specifies ±10% Zener voltage tolerance, meaning the measured VZ falls between 90 V and 110 V at 12 mA test current and 25 °C. This tolerance is confirmed in the Electrical Characteristics table on page 3 of Microsemi's T4-LDS-0246-1 datasheet, where SMBG5378B (±5%) and SMBG5378A (±10%) are explicitly differentiated.
Does SMBG5378AE3/TR13 require dry packing for moisture sensitivity?
No, SMBG5378AE3/TR13 has IPC/JEDEC J-STD-020B Level 1 moisture sensitivity - the lowest classification - and explicitly states "no dry pack required" in the product description on page 1 of the datasheet. Its plastic encapsulation and void-free epoxy body meet UL94V-0 flammability standards without desiccant or humidity barrier packaging.
What is the maximum continuous Zener current for SMBG5378AE3/TR13?
The maximum regulator current (IZM) for SMBG5378AE3/TR13 is 47.5 mA, calculated per Note 3 on page 3 of the datasheet using P/VZM, where P = 5 W and VZM = 100 V × 1.1 = 110 V. This value applies under lead temperature <25 °C conditions and is validated in the Electrical Characteristics table for the "A" tolerance group.
Is SMBG5378AE3/TR13 compatible with lead-free reflow soldering?
Yes, SMBG5378AE3/TR13 features RoHS-compliant annealed matte-tin plating (e3 suffix) and is rated for solder temperature up to 260 °C for 10 seconds, fully supporting standard lead-free reflow profiles. The gull-wing leads are solderable per MIL-STD-750 method 2026, and the DO-215AA package is qualified for automated SMT assembly without special process adjustments.
How does SMBG5378AE3/TR13 compare to the 1N5378A in performance?
SMBG5378AE3/TR13 is electrically identical to 1N5378A per the datasheet's opening statement: "equivalent to JEDEC registered 1N5333 thru 1N5388B with identical electrical characteristics and testing." Both share 100 V VZ, 12 mA IZT, 90 Ω ZZT, and 47.5 mA IZM, differing only in package (DO-215AA vs. DO-41) and plating (matte-tin vs. Sn/Pb).
SMBG5378AE3/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):
- 100 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 72 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)
SMBG5378AE3/TR13 FAQ
1.How can I place an order for SMBG5378AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5378AE3/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 SMBG5378AE3/TR13 reliable?
The price and inventory of SMBG5378AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5378AE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5378AE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5378AE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5378AE3/TR13?
SMBG5378AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5378AE3/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 SMBG5378AE3/TR13?
For technical support, including SMBG5378AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5378AE3/TR13 requirements.
6.How does Aetrix verify that SMBG5378AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5378AE3/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 SMBG5378AE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5378AE3/TR13?
All SMBG5378AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5378AE3/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 SMBG5378AE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5378AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5378AE3/TR13 Tags
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MM5Z5V1ST1G
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