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Microchip Technology SMBG5381CE3/TR13
- Part No.:
- SMBG5381CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5381CE3/TR13.pdf
- Description:
- DIODE ZENER 130V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,044
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Product details
Overview
SMBG5381CE3/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 130 V, ±2% tolerance (C suffix), rated test current of 10 mA, maximum dynamic impedance of 190 Ω at IZT, and maximum Zener surge current of 1250 A (8.3 ms half-sine). It operates in 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 SMBG5381CE3/TR13 datasheet, SMBG5381CE3/TR13 pinout, SMBG5381CE3/TR13 application, or SMBG5381CE3/TR13 equivalent, key selection criteria include Zener voltage accuracy, surge current capability, thermal resistance (RθJL = 25 °C/W), RoHS-compliant matte-tin plating, and compatibility with automated SMT assembly on FR4 boards.
Technical Context
This device functions as a two-terminal voltage reference operating in reverse breakdown, maintaining stable 130 V regulation across 10 mA to 36.6 mA dc current (IZM) with minimal voltage drift versus temperature (–65 to +150 °C junction range). Its low RθJL enables effective heat transfer to PCB leads under sustained 5 W dissipation at TL < 25 °C.
The SMBG5381CE3/TR13 exhibits 190 Ω dynamic impedance at 10 mA test current and 75 Ω knee impedance at 1 mA, ensuring tight regulation near the breakdown knee. It withstands non-repetitive 1250 A surges (8.3 ms half-sine) and maintains <0.5 µA reverse leakage at VR = 104 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 130 V ±2% at 10 mA - ensures precise clamping threshold for 120 V AC-derived rails or telecom line protection. |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - supports continuous regulation in compact layouts with adequate lead heatsinking. |
| Dynamic Impedance (ZZT) | 190 Ω at IZT = 10 mA - limits output voltage variation under load transients in feedback networks. |
| Max Surge Current (IZSM) | 1250 A (8.3 ms half-sine) - provides robust transient suppression for lightning or inductive switching events. |
| Thermal Resistance (RθJL) | 25 °C/W - allows direct thermal path from junction to PCB lead, critical for reliability in high-power pulse operation. |
| Reverse Leakage (IR) | <0.5 µA at VR = 104 V - minimizes standby power loss in high-impedance bias networks. |
| Junction Temperature Range | –65 to +150 °C - enables deployment in industrial and automotive under-hood environments. |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode band marking; terminals are anode (unbanded end) and cathode (banded end); RoHS-compliant matte-tin plating per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; referenced ground in Zener regulation mode | Connected to lower-potential node (e.g., power rail return or error amplifier output) during regulation. |
| Cathode | Current exit terminal in forward bias; regulated output node in Zener mode | Banded end connects to higher-potential node (e.g., switcher feedback divider tap or protected line input). |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables tighter output voltage control in closed-loop DC/DC converters without trimming resistors. |
| RoHS-compliant matte-tin plating | Ensures solderability and intermetallic formation compatibility with Pb-free reflow profiles (260 °C, 10 s). |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints-ready for immediate SMT placement. |
| Gull-wing lead form (DO-215AA) | Provides visible solder joints for automated optical inspection (AOI) and reliable mechanical anchoring on FR4. |
| Non-sensitive to ESD (MIL-STD-750 Method 1020) | Reduces handling precautions and eliminates need for ESD-safe workstations during assembly. |
Applications
| Switch-Mode Power Supply Feedback | Telecom Line Overvoltage Protection |
|---|---|
|
Use Scenario: Regulates output voltage in isolated flyback converter by sensing secondary-side voltage via optocoupler feedback network. IC Role / Device Role / Timing Role: Precision voltage reference element setting feedback threshold for PWM controller error amplifier. Use Value: ±2% VZ tolerance reduces output voltage deviation to ±1.5% across line/load/temperature, eliminating post-production calibration. |
Use Scenario: Clamps induced surges on POTS telephone line interface before reaching SLIC or codec IC. IC Role / Device Role / Timing Role: Primary overvoltage clamp protecting analog front-end circuitry from lightning-induced transients. Use Value: 1250 A surge rating (8.3 ms) absorbs ITU-T K.20-compliant longitudinal surges without degradation. |
| Industrial Sensor Signal Conditioning | Programmable Logic Controller Input Protection |
|
Use Scenario: Stabilizes excitation voltage for 4–20 mA current loop transmitter using 24 V DC supply. IC Role / Device Role / Timing Role: Shunt regulator maintaining constant bias for precision op-amp and DAC reference stages. Use Value: 190 Ω ZZT ensures <20 mV output shift across 5–15 mA load variation, preserving current loop accuracy. |
Use Scenario: Protects digital input channel of PLC module from accidental 120 V AC miswiring or field wiring faults. IC Role / Device Role / Timing Role: Fail-safe shunt clamp diverting fault current away from input buffer IC and isolation barrier. Use Value: 130 V VZ exceeds 120 V RMS peak (170 V), providing 40 V safety margin while avoiding nuisance triggering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5381C | Axial-leaded T-18 package; identical electrical specs but higher RθJA (150 °C/W vs. 90 °C/W) and no gull-wing visibility. | Requires through-hole assembly; unsuitable for high-density SMT layouts or AOI. | Select when legacy through-hole design or manual repair is required; not drop-in for SMBG5381CE3/TR13. |
| SMBJ5381C | DO-214AA J-bend package; same VZ, IZM, and surge rating, but RθJL = 30 °C/W and different pad layout. | Compatible with standard SMT pick-and-place but requires footprint redesign and has slightly reduced thermal performance. | Choose for designs already using DO-214AA footprints; verify thermal margin with 30 °C/W RθJL. |
Compared with 1N5381C and SMBJ5381C, SMBG5381CE3/TR13 delivers superior thermal transfer (25 °C/W RθJL), gull-wing visual inspection capability, and native RoHS compliance-making it optimal for new SMT power regulation designs requiring reliability and process efficiency.
Availability
SMBG5381CE3/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, telecom line protection, industrial sensor conditioning, and PLC input protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBG5381CE3/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, high-surge industrial power systems-emphasizing thermal robustness, JEDEC compatibility, and process-ready packaging.
FAQ
What is the Zener voltage tolerance of SMBG5381CE3/TR13?
The SMBG5381CE3/TR13 has a Zener voltage tolerance of ±2%, indicated by the "C" suffix in its part number. This means its measured VZ falls within 127.4 V to 132.6 V when tested at 10 mA and 25 °C. This tight tolerance supports high-accuracy regulation in feedback networks where minimal output deviation is critical, such as in medical-grade power supplies or precision instrumentation.
Does SMBG5381CE3/TR13 require dry packing or moisture barrier bags?
No, SMBG5381CE3/TR13 does not require dry packing. It carries IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it can be stored indefinitely at ambient conditions without desiccant or humidity-controlled packaging. This simplifies inventory handling and eliminates floor-life tracking during SMT assembly-directly usable from reel after opening.
What is the maximum continuous Zener current (IZM) for SMBG5381CE3/TR13?
The maximum continuous Zener current (IZM) for SMBG5381CE3/TR13 is 36.6 mA when operated at lead temperature (TL) below 25 °C. This value is derived from PD = 5.0 W and VZM = 132.6 V (upper limit of ±2% tolerance), per Note 3 in the datasheet. Exceeding this current risks thermal runaway unless additional heatsinking is applied.
Can SMBG5381CE3/TR13 be used in place of SMBG5381B?
Yes, SMBG5381CE3/TR13 is functionally compatible with SMBG5381B but offers tighter voltage tolerance (±2% vs. ±5%) and RoHS-compliant matte-tin plating (vs. Sn/Pb). Electrically, both share identical VZ nominal (130 V), IZT (10 mA), and surge rating (1250 A). The "E3" suffix confirms RoHS compliance, making SMBG5381CE3/TR13 the preferred choice for new environmentally compliant designs.
What is the thermal resistance from junction to ambient (RθJA) for SMBG5381CE3/TR13?
The thermal resistance from junction to ambient (RθJA) for SMBG5381CE3/TR13 is 90 °C/W when mounted on a standard FR4 PCB with 1 oz copper and the recommended footprint. This value assumes natural convection cooling; actual RθJA improves with added copper pour or forced airflow. For thermal design, use RθJL = 25 °C/W when heatsinking via leads is prioritized.
SMBG5381CE3/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):
- 130 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 190 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 93.6 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)
SMBG5381CE3/TR13 FAQ
1.How can I place an order for SMBG5381CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5381CE3/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 SMBG5381CE3/TR13 reliable?
The price and inventory of SMBG5381CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5381CE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5381CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5381CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5381CE3/TR13?
SMBG5381CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5381CE3/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 SMBG5381CE3/TR13?
For technical support, including SMBG5381CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5381CE3/TR13 requirements.
6.How does Aetrix verify that SMBG5381CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5381CE3/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 SMBG5381CE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5381CE3/TR13?
All SMBG5381CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5381CE3/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 SMBG5381CE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5381CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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