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Microchip Technology SMBG5378A/TR13
- Part No.:
- SMBG5378A/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5378A/TR13.pdf
- Description:
- DIODE ZENER 100V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,515
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Product details
Overview
SMBG5378A/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal breakdown voltage of 100 V, ±10% tolerance (A-suffix), and maximum regulator current of 47.5 mA at 25 °C. It uses DO-215AA gull-wing package, supports visible solder joints, and operates across –65 °C to +150 °C junction temperature range. It serves in overvoltage clamping and precision DC voltage reference circuits for industrial power supplies.
For engineers reviewing the SMBG5378A/TR13 datasheet, SMBG5378A/TR13 pinout, SMBG5378A/TR13 application, or SMBG5378A/TR13 equivalent, key selection criteria include Zener voltage tolerance, surge current rating (800 A), thermal resistance (25 °C/W junction-to-lead), dynamic impedance (90 Ω at 12 mA), and RoHS-compliant matte-tin plating compatibility with standard reflow profiles.
Technical Context
This device functions as a two-terminal voltage regulator diode operating in reverse-biased breakdown mode. Its 100 V nominal Zener voltage is specified at 12 mA test current (IZT), with dynamic impedance of 90 Ω measured at 10% rms ac modulation superimposed on IZT.
Thermal performance is defined by RθJL = 25 °C/W (junction-to-lead) and RθJA = 90 °C/W (junction-to-ambient on FR4 with recommended footprint). It withstands non-repetitive 8.3 ms half-sine surge currents up to 800 A and exhibits ≤0.5 µA reverse leakage at 72 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 100 V ±10% at 12 mA - defines stable regulation point under nominal bias |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - requires thermal management when lead temperature exceeds 25 °C |
| Dynamic Impedance (ZZT) | 90 Ω at 12 mA - determines output voltage variation under load current changes |
| Max Surge Current (IZSM) | 800 A (8.3 ms half-sine) - enables transient overvoltage suppression without failure |
| Reverse Leakage (IR) | ≤0.5 µA at 72 V - ensures minimal standby power loss in high-impedance bias networks |
| Junction Temp Range | –65 °C to +150 °C - supports operation in extended industrial and automotive under-hood environments |
| Package | DO-215AA gull-wing - provides visual solder joint inspection and IPC/JEDEC J-STD-020B Level 1 moisture sensitivity |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode band marking; terminals are anode and cathode only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Breakdown terminal | Connected to higher potential in regulation/clamping; polarity must be observed to avoid forward conduction |
| Anode | Reference terminal | Connected to lower potential or ground; forms complete bias path for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5378B equivalent | Identical electrical characteristics and testing per JEDEC registration - enables legacy design drop-in validation |
| RoHS-compliant matte-tin plating | Solderable per MIL-STD-750 Method 2026 - compatible with Pb-free reflow profiles up to 260 °C for 10 s |
| Level 1 moisture sensitivity | No dry pack required - eliminates baking step before assembly, reducing manufacturing overhead |
| Gull-wing lead form | Visible solder fillet inspection - supports automated optical inspection (AOI) and reduces field failure risk |
| High surge current capability | 800 A non-repetitive peak - protects downstream circuitry against lightning-induced or inductive-switching transients |
Applications
| Industrial Power Supply Regulation | Automotive ECU Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing 100 V rail in isolated DC-DC converter feedback loop under variable load and temperature. IC Role / Device Role / Timing Role: Two-terminal voltage reference providing precise 100 V threshold for error amplifier biasing. Use Value: Maintains ±10% regulation accuracy across –40 °C to +125 °C ambient with <90 Ω dynamic impedance limiting output drift. |
Use Scenario: Clamping 12 V battery line surges exceeding 100 V during load dump events in engine control units. IC Role / Device Role / Timing Role: Passive overvoltage protection element shunting transient energy to ground. Use Value: Withstands 800 A surge (8.3 ms) without degradation, preserving downstream MCU and sensor ICs. |
| Telecom Line Card Protection | Test Equipment Reference Source |
Use Scenario: Protecting Ethernet PHY interface from induced surges on long copper runs in outdoor base stations. IC Role / Device Role / Timing Role: Primary clamping device placed at board edge before signal conditioning circuitry. Use Value: Low 0.5 µA leakage at 72 V minimizes quiescent current draw while enabling fast response to >100 V transients. |
Use Scenario: Providing stable 100 V reference in portable calibration equipment requiring traceable voltage standards. IC Role / Device Role / Timing Role: Precision Zener reference in resistive divider network for DAC/ADC offset trimming. Use Value: ±10% tolerance and 90 Ω ZZT ensure repeatable 100 V setpoint across production units and temperature cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5378B | Same 100 V ±5%, 5 W, DO-41 axial package - higher RθJA (120 °C/W), no gull-wing visibility | Requires through-hole PCB layout; unsuitable for high-density SMT designs | Select when legacy through-hole assembly or higher ambient thermal margin is acceptable |
| SMBG5378B | Same 100 V ±5%, 5 W, DO-215AA - tighter voltage tolerance but lower IZM (43 mA vs. 47.5 mA) | Used where tighter regulation stability is prioritized over maximum continuous current handling | Select when system bias current remains below 43 mA and ±5% VZ tolerance is mandatory |
Compared with SMBG5378A/TR13, the 1N5378B offers identical regulation performance but demands through-hole assembly and delivers inferior thermal resistance in surface-mount systems, while SMBG5378B trades 4.5 mA of maximum regulator current for ±5% voltage precision-critical in closed-loop feedback paths where gain stability dominates.
Availability
SMBG5378A/TR13 is available at Aetrix Electronics and suitable for industrial power supply regulation, automotive ECU overvoltage clamp, and telecom line card protection requiring stable component supply with full traceability and lifecycle continuity.
Supply support for SMBG5378A/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 SMBG53xx series was designed specifically for surface-mount 5 W Zener regulation in space-constrained, high-surge environments-emphasizing visible solder joints, Level 1 moisture robustness, and JEDEC-compatibility with legacy 1N53xx designs.
FAQ
What is the Zener voltage tolerance for SMBG5378A/TR13?
The "A" suffix in SMBG5378A/TR13 specifies ±10% Zener voltage tolerance at 12 mA test current. This yields a guaranteed VZ range of 90 V to 110 V under nominal conditions, validated per JEDEC test methods and documented in the Electrical Characteristics table on page 3 of T4-LDS-0246-1 Rev. 1.
Does SMBG5378A/TR13 require dry packing before reflow soldering?
No. SMBG5378A/TR13 has IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it may be stored and processed without dry packing or baking. The DO-215AA package uses void-free epoxy meeting UL94V-0 and is rated for standard reflow profiles up to 260 °C for 10 seconds.
What is the maximum surge current rating for SMBG5378A/TR13?
SMBG5378A/TR13 is rated for 800 A non-repetitive peak surge current (IZSM) using an 8.3 ms half-sine waveform. This value is measured per Microsemi's standardized test protocol and appears in the Electrical Characteristics table on page 3 of the official datasheet T4-LDS-0246-1.
How does the thermal resistance of SMBG5378A/TR13 affect its power derating?
SMBG5378A/TR13 has RθJL = 25 °C/W and RθJA = 90 °C/W (on FR4 with recommended footprint). At lead temperatures above 25 °C, its 5 W rating must be linearly derated-e.g., at TL = 75 °C, maximum dissipation drops to 3.75 W. Full derating curve is shown in Figure 1 of T4-LDS-0246-1.
Is SMBG5378A/TR13 RoHS compliant?
Yes. SMBG5378A/TR13 uses RoHS-compliant annealed matte-tin plating per the "e3" designation implied by the "A" suffix nomenclature and confirmed in the Mechanical and Packaging section of T4-LDS-0246-1. It meets EU Directive 2011/65/EU and is solderable per MIL-STD-750 Method 2026.
SMBG5378A/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)
SMBG5378A/TR13 FAQ
1.How can I place an order for SMBG5378A/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5378A/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 SMBG5378A/TR13 reliable?
The price and inventory of SMBG5378A/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5378A/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5378A/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5378A/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5378A/TR13?
SMBG5378A/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5378A/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 SMBG5378A/TR13?
For technical support, including SMBG5378A/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5378A/TR13 requirements.
6.How does Aetrix verify that SMBG5378A/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5378A/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 SMBG5378A/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5378A/TR13?
All SMBG5378A/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5378A/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 SMBG5378A/TR13 part is unused and in its original packaging.
Return procedure for SMBG5378A/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5378A/TR13 Tags
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