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Microchip Technology SMBG5378BE3/TR13
- Part No.:
- SMBG5378BE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5378BE3/TR13.pdf
- Description:
- DIODE ZENER 100V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,512
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Product details
Overview
SMBG5378BE3/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener 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 ambient on FR4 board. It serves as a precision voltage reference and overvoltage clamp in power supply feedback loops and transient protection circuits.
For engineers reviewing the SMBG5378BE3/TR13 datasheet, SMBG5378BE3/TR13 pinout, SMBG5378BE3/TR13 application, or SMBG5378BE3/TR13 equivalent, key selection criteria include Zener voltage stability across temperature, surge current capability (800 A peak, 8.3 ms half-sine), thermal resistance (90 °C/W junction-to-ambient), RoHS-compliant matte-tin plating, and DO-215AA gull-wing package compatibility with automated SMT assembly.
Technical Context
This device operates in reverse-bias breakdown mode with a specified Zener voltage of 100 V measured at 12 mA (IZT) and 30 °C lead temperature. Its dynamic impedance (ZZT) is 90 Ω at IZT, indicating moderate regulation sensitivity to current variation.
The SMBG5378BE3/TR13 exhibits a maximum surge current (IZSM) of 800 A under non-repetitive 8.3 ms half-sine conditions and maintains stable regulation over -65 °C to +150 °C junction temperature range, supported by 25 °C/W junction-to-lead thermal resistance for heatsink-coupled mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 100 V ±5% at 12 mA - defines precise clamping threshold for feedback or protection circuits |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - requires thermal management when operating near max current |
| Dynamic Impedance (ZZT) | 90 Ω at 12 mA - determines output voltage variation under load current changes |
| Max Regulator Current (IZM) | 47.5 mA at TA = 25 °C on FR4 - sets upper limit for continuous DC bias in regulation applications |
| Surge Current (IZSM) | 800 A (8.3 ms half-sine) - enables robust transient suppression without failure |
| Junction Temperature Range | -65 °C to +150 °C - supports operation in automotive under-hood and industrial environments |
| Thermal Resistance RθJA | 90 °C/W on FR4 (1 oz Cu) - informs PCB copper area requirements for thermal design |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band; anode and cathode terminals only - no internal circuitry or control logic.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection | Connected to ground or lower-potential node in Zener regulation configuration |
| Cathode (banded end) | Reverse breakdown terminal / high-side connection | Connected to input or regulated node; polarity must be observed to enable Zener action |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5378B equivalent | Identical electrical specs and test methods - enables drop-in replacement for legacy through-hole designs |
| RoHS-compliant matte-tin plating | Meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity - eliminates dry-pack requirement and simplifies handling |
| Gull-wing lead form (DO-215AA) | Enables visual solder joint inspection and reliable reflow yield on fine-pitch SMT lines |
| High surge current rating | 800 A non-repetitive peak withstand - suitable for IEC 61000-4-5 level 4 surge protection stages |
| Stable voltage vs. temperature | Specified over -65 °C to +150 °C - maintains regulation accuracy in wide-temperature industrial systems |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Clamp in DC-DC Converters |
|---|---|
Use Scenario: Used in optocoupler-based feedback loop of isolated flyback converter to regulate 12 V output. IC Role / Device Role / Timing Role: Zener reference sets error amplifier threshold; cathode tied to optocoupler LED anode. Use Value: 100 V rating allows safe margin above 12 V output while maintaining tight ±5% regulation tolerance across line/load/temperature. |
Use Scenario: Placed across MOSFET drain-source in buck converter to suppress switching spikes exceeding 80 V. IC Role / Device Role / Timing Role: Clamps transient overvoltage during turn-off; absorbs energy via controlled breakdown. Use Value: 800 A surge rating handles repetitive 60 ns–100 ns spikes without degradation; 90 Ω ZZT limits clamping voltage overshoot. |
| Industrial Sensor Signal Conditioning | Automotive Body Control Module Protection |
Use Scenario: Protects 24 V analog sensor interface from load-dump transients in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Shunts excess energy to ground during 12 V–24 V bus surges; placed upstream of LDO regulator. Use Value: 100 V VZ provides headroom above 24 V nominal rail while 47.5 mA IZM ensures stable bias under steady-state leakage. |
Use Scenario: Mounted on BCM power input to absorb ISO 7637-2 Pulse 5a (load dump) events up to 120 V. IC Role / Device Role / Timing Role: Primary clamping element in TVS-like configuration; cathode to battery rail, anode to ground. Use Value: DO-215AA gull-wing package survives automotive reflow profiles; Level 1 MSL rating avoids pre-bake delays in production. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5378BRLG | Through-hole DO-41 package; identical VZ, IZT, ZZT, and IZM specs; Sn/Pb plating | Requires axial-leaded PCB footprint and wave soldering; not suitable for high-density SMT layouts | Select when legacy through-hole assembly or higher mechanical robustness under vibration is required |
| SMBJ5378B | Same Zener voltage and tolerance, but DO-214AA (J-bend) package; RθJA = 80 °C/W (vs. 90 °C/W) | Better thermal performance on FR4, but J-bend leads hinder optical solder inspection vs. gull-wing | Select when thermal margin is critical and automated optical inspection is not mandated |
Compared with SMBG5378BE3/TR13, 1N5378BRLG offers identical regulation performance in through-hole format but lacks SMT compatibility, while SMBJ5378B improves thermal resistance by 10 °C/W yet sacrifices visual solder joint verification - making SMBG5378BE3/TR13 optimal for high-reliability, inspectable SMT power regulation.
Availability
SMBG5378BE3/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor interfaces, and automotive body control modules requiring stable component supply with full RoHS compliance and traceable sourcing.
Supply support for SMBG5378BE3/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 and mixed-signal components for aerospace, defense, and industrial markets.
The SMBG53xxB series was designed specifically for surface-mount voltage regulation and transient suppression in space-constrained, thermally demanding power systems where JEDEC-compatibility and visual process control are essential.
FAQ
What is the Zener voltage tolerance of SMBG5378BE3/TR13?
The "B" suffix in SMBG5378BE3/TR13 denotes ±5% Zener voltage tolerance. At 100 V nominal, this means the actual VZ falls between 95 V and 105 V when measured at 12 mA and 30 °C lead temperature, per Microsemi T4-LDS-0246-1 Rev. 1 specifications.
Does SMBG5378BE3/TR13 require dry packing before reflow soldering?
No. SMBG5378BE3/TR13 has IPC/JEDEC J-STD-020B moisture sensitivity level (MSL) 1, meaning it is not hygroscopic and can be stored and processed without dry pack or baking - confirmed in the Mechanical and Packaging section of the official datasheet.
What is the maximum continuous Zener current for SMBG5378BE3/TR13 on a standard FR4 PCB?
At 25 °C ambient temperature mounted on FR4 with 1 oz copper and recommended pad layout, SMBG5378BE3/TR13 supports a maximum regulator current (IZM) of 47.5 mA - derived from its 5 W power rating and 105 V upper-tolerance VZ (P/VZM = 5 W / 105 V ≈ 47.6 mA).
How does the DO-215AA package of SMBG5378BE3/TR13 differ from DO-214AA?
SMBG5378BE3/TR13 uses DO-215AA gull-wing leads, enabling visible solder joints and compatibility with standard SMT reflow profiles, whereas DO-214AA (used in SMBJ5378B) features J-bend leads that sit flush to the board - limiting optical inspection but offering slightly better thermal resistance (80 °C/W vs. 90 °C/W).
Is SMBG5378BE3/TR13 suitable for IEC 61000-4-5 surge protection?
Yes. With a non-repetitive peak surge current (IZSM) rating of 800 A for 8.3 ms half-sine waveform, SMBG5378BE3/TR13 meets IEC 61000-4-5 level 4 surge immunity requirements when properly integrated into a coordinated protection network with series impedance and filtering.
SMBG5378BE3/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)
SMBG5378BE3/TR13 FAQ
1.How can I place an order for SMBG5378BE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5378BE3/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 SMBG5378BE3/TR13 reliable?
The price and inventory of SMBG5378BE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5378BE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5378BE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5378BE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5378BE3/TR13?
SMBG5378BE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5378BE3/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 SMBG5378BE3/TR13?
For technical support, including SMBG5378BE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5378BE3/TR13 requirements.
6.How does Aetrix verify that SMBG5378BE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5378BE3/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 SMBG5378BE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5378BE3/TR13?
All SMBG5378BE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5378BE3/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 SMBG5378BE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5378BE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5378BE3/TR13 Tags
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