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Microchip Technology SMBG5378B/TR13
- Part No.:
- SMBG5378B/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5378B/TR13.pdf
- Description:
- DIODE ZENER 100V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,932
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Product details
Overview
SMBG5378B/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal breakdown voltage of 100 V, ±5% tolerance (B suffix), 90 Ω dynamic impedance at 12 mA test current, and maximum regulator current of 47.5 mA at 25 °C. 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 SMBG5378B/TR13 datasheet, SMBG5378B/TR13 pinout, SMBG5378B/TR13 application, or SMBG5378B/TR13 equivalent, key selection factors include its 100 V Zener voltage, 5 W power rating at lead temperature <25 °C, 90 Ω Zener impedance, 0.5 µA reverse leakage at 72 V, and DO-215AA thermal resistance of 25 °C/W junction-to-lead.
Technical Context
This device functions as a two-terminal voltage reference operating in reverse breakdown, maintaining stable 100 V regulation across 12 mA test current (IZT) and up to 47.5 mA maximum DC current (IZM). Its 90 Ω dynamic impedance (ZZT) and 0.5 µA reverse leakage (IR) at VR = 72 V support tight regulation under varying load conditions.
The SMBG5378B/TR13 uses a void-free thermosetting epoxy case (UL94V-0), gull-wing matte-tin terminals per MIL-STD-750 method 2026, and achieves IPC/JEDEC J-STD-020B Level 1 moisture sensitivity-no dry pack required. Cathode polarity is marked by a band; operation requires cathode positive relative to anode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 100 V ±5% at IZT = 12 mA - defines precise regulation point for feedback networks |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - requires thermal management via PCB copper pour or heatsink |
| Dynamic Impedance (ZZT) | 90 Ω at IZT = 12 mA - low impedance ensures minimal voltage shift under load transients |
| Reverse Leakage (IR) | 0.5 µA at VR = 72 V - enables low-power standby operation without excessive quiescent loss |
| Max Regulator Current (IZM) | 47.5 mA at 25 °C - sets upper limit for sustained DC bias in shunt regulation |
| Junction-to-Lead Rθ | 25 °C/W - supports direct thermal path to PCB pad for reliable 5 W operation |
| Surge Current (IZSM) | 800 A (8.3 ms half-sine) - withstands transient overvoltage events in industrial environments |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by a band on the body; anode and cathode terminals are formed as symmetrical gull-wing leads for visible solder joint inspection and automated optical alignment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lower-potential rail; forms return path for Zener current |
| Cathode | Regulated output node | Banded terminal; connected to feedback point or protected circuit node; maintains 100 V above anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5378B equivalent | Identical electrical specs and test methods - enables drop-in replacement in legacy designs |
| Level 1 moisture sensitivity | No dry pack required before reflow - reduces handling cost and assembly complexity |
| Gull-wing lead form | Visible solder joints and self-centering during reflow - improves SMT yield and AOI inspection reliability |
| RoHS-compliant matte-tin plating | MIL-STD-750 method 2026 solderability - ensures robust intermetallic formation and long-term joint integrity |
| High surge current rating | 800 A non-repetitive peak - protects downstream circuitry against lightning-induced or inductive-switching transients |
Applications
| Switch-Mode Power Supply Feedback | Industrial Overvoltage Clamp |
|---|---|
Use Scenario: Used in optocoupler-based feedback loop of isolated 48 V DC-DC converter to regulate output within ±1%. IC Role / Device Role / Timing Role: Two-terminal voltage reference providing stable 100 V reference for TL431 comparator input. Use Value: 90 Ω dynamic impedance minimizes output voltage deviation during line/load transients, improving regulation accuracy. |
Use Scenario: Placed across motor drive bus to clamp voltage spikes exceeding 100 V during MOSFET turn-off. IC Role / Device Role / Timing Role: Passive shunt protector absorbing energy from inductive kickback without active control. Use Value: 800 A surge rating handles repetitive 600 V/10 µs transients common in 3-phase VFDs. |
| Programmable Voltage Monitor | Test Equipment Reference |
Use Scenario: Configured with resistor divider to trigger shutdown when input exceeds 100 V in battery-management system. IC Role / Device Role / Timing Role: Precision threshold detector enabling accurate overvoltage fault detection. Use Value: ±5% tolerance ensures trip point remains within 95–105 V across temperature and aging. |
Use Scenario: Mounted on calibration board for benchtop multimeter verification at 100 V DC range. IC Role / Device Role / Timing Role: Stable, low-drift voltage standard traceable to primary references. Use Value: 0.5 µA leakage at 72 V prevents loading error in high-impedance measurement paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5378B | Axial-leaded T-18 package; identical VZ, IZT, ZZT, and IR specs; higher RθJA (125 °C/W vs. 90 °C/W). | Requires through-hole mounting and manual assembly; unsuitable for high-density SMT layouts. | Select when legacy through-hole design or hand-soldering prototyping is required. |
| SMBJ5378B | DO-214AA J-bend package; same electrical specs but 35 °C/W higher RθJA (125 °C/W); no gull-wing visibility. | Limited thermal performance on FR4; less suitable for continuous 5 W operation without enhanced copper. | Choose only if DO-214AA footprint compatibility is mandatory and thermal derating is acceptable. |
Compared with SMBG5378B/TR13, 1N5378B offers identical regulation but inferior thermal performance and assembly flexibility, while SMBJ5378B sacrifices thermal efficiency and visual solder inspection capability for footprint compatibility-making SMBG5378B/TR13 optimal for high-reliability SMT power regulation.
Availability
SMBG5378B/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial overvoltage clamps, and programmable voltage monitors requiring stable component supply, consistent Zener voltage tolerance, and RoHS-compliant surface-mount packaging.
Supply support for SMBG5378B/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 SMBG53xxB series was designed specifically for surface-mount 5 W Zener regulation in space-constrained, thermally demanding applications where gull-wing visibility and Level 1 moisture handling are critical.
FAQ
What is the Zener voltage tolerance for SMBG5378B/TR13?
The "B" suffix in SMBG5378B/TR13 indicates a ±5% Zener voltage tolerance. At 25 °C, this means the measured VZ falls between 95 V and 105 V when tested at IZT = 12 mA. This tolerance is confirmed in the Electrical Characteristics table on page 3 of Microsemi's T4-LDS-0246-1 datasheet.
Can SMBG5378B/TR13 be used in place of 1N5378B?
Yes-SMBG5378B/TR13 is explicitly stated as electrically equivalent to JEDEC 1N5378B, with identical VZ, IZT, ZZT, IR, and IZM specifications. However, SMBG5378B/TR13 uses a DO-215AA gull-wing package versus the axial T-18 of 1N5378B, so mechanical redesign is required.
What is the maximum continuous power dissipation for SMBG5378B/TR13?
SMBG5378B/TR13 delivers 5.0 W only when lead temperature (TL) is maintained below 25 °C. On a standard FR4 board with recommended footprint, power must be derated above 25 °C per Figure 1, reaching ~1.38 W at TA = 25 °C due to its 90 °C/W junction-to-ambient thermal resistance.
Does SMBG5378B/TR13 require dry packing before reflow soldering?
No-SMBG5378B/TR13 has IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it may be stored indefinitely at ≤30 °C/60% RH without dry pack or baking. This is verified in the Mechanical and Packaging section of the datasheet.
What is the reverse leakage current specification for SMBG5378B/TR13?
SMBG5378B/TR13 specifies a maximum reverse leakage current (IR) of 0.5 µA at VR = 72 V, per the Electrical Characteristics table. This low leakage supports energy-efficient operation in always-on monitoring circuits without compromising regulation stability.
SMBG5378B/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:
- ±5%
- 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)
SMBG5378B/TR13 FAQ
1.How can I place an order for SMBG5378B/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5378B/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 SMBG5378B/TR13 reliable?
The price and inventory of SMBG5378B/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5378B/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5378B/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5378B/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5378B/TR13?
SMBG5378B/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5378B/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 SMBG5378B/TR13?
For technical support, including SMBG5378B/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5378B/TR13 requirements.
6.How does Aetrix verify that SMBG5378B/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5378B/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 SMBG5378B/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5378B/TR13?
All SMBG5378B/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5378B/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 SMBG5378B/TR13 part is unused and in its original packaging.
Return procedure for SMBG5378B/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5378B/TR13 Tags
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MM5Z5V1ST1G
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