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Microchip Technology SMBG5356CE3/TR13
- Part No.:
- SMBG5356CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5356CE3/TR13.pdf
- Description:
- DIODE ZENER 19V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,825
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Product details
Overview
SMBG5356CE3/TR13 from Microsemi is a surface-mount 5 W Zener diode with a nominal breakdown voltage of 19 V (±2% tolerance), designed for precision voltage regulation in power supply rails, overvoltage protection circuits, and reference applications. It features a DO-215AA gull-wing package, 25 °C/W junction-to-lead thermal resistance, and 100 mA maximum regulator current at 25 °C ambient with proper heat sinking.
For engineers reviewing the SMBG5356CE3/TR13 datasheet, SMBG5356CE3/TR13 pinout, SMBG5356CE3/TR13 application, or SMBG5356CE3/TR13 equivalent, key selection criteria include Zener voltage tolerance (±2%), surge current capability (5.3 A @ 8.3 ms), dynamic impedance (3.0 Ω at 65 mA), and RoHS-compliant matte-tin plating for lead-free assembly compatibility.
Technical Context
This device operates as a reverse-biased silicon Zener diode, maintaining stable voltage across its terminals under controlled reverse current (IZT = 65 mA). Its breakdown behavior is characterized by low dynamic impedance (ZZT = 3.0 Ω) and minimal voltage drift over temperature (−65 to +150 °C junction range).
The SMBG5356CE3/TR13 uses a void-free thermosetting epoxy case rated UL94V-0, with cathode polarity indicated by a band. It complies with IPC/JEDEC J-STD-020B Level 1 moisture sensitivity and withstands 260 °C solder reflow for 10 s without degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 19 V ±2% at 65 mA - ensures tight regulation for 18–19.4 V reference rails |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - supports high-energy clamping when mounted on thermally optimized PCB |
| Dynamic Impedance (ZZT) | 3.0 Ω at IZT = 65 mA - minimizes output voltage variation under load transients |
| Max Regulator Current (IZM) | 65 mA - defines safe DC operating limit before thermal runaway at 25 °C |
| Surge Current (IZSM) | 5.3 A (8.3 ms half-sine) - enables robust transient suppression in automotive and industrial surge events |
| Junction Temp Range | −65 to +150 °C - suitable for extended-temperature environments including under-hood automotive |
| Thermal Resistance (RθJL) | 25 °C/W - allows direct thermal path to PCB copper for efficient heat transfer |
Pinout & Package
DO-215AA gull-wing surface-mount package with two terminals: anode and cathode. Cathode identified by molded band; device operated with banded end positive relative to anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener reference ground node | Connected to circuit ground or lowest potential point in regulation loop |
| Cathode | Reverse-biased Zener terminal / regulated output node | Connected to input rail or protected node; voltage clamped to 19 V ±2% |
Key Features
| Feature | Design Value |
|---|---|
| RoHS-compliant matte-tin plating | Enables lead-free reflow assembly without solderability compromise or whisker risk |
| Gull-wing lead geometry (DO-215AA) | Provides visible solder joints for automated optical inspection (AOI) and reliable rework access |
| Level 1 moisture sensitivity | Eliminates dry-pack requirement and baking prior to assembly-reduces manufacturing overhead |
| JEDEC 1N53xxB equivalent | Ensures drop-in compatibility with legacy designs using axial 1N5356B or SMBJ5356B variants |
| High surge current rating (5.3 A) | Supports IEC 61000-4-5 Level 4 surge immunity without external series impedance |
Applications
| Industrial Power Supply Regulation | Automotive ECU Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing 24 V intermediate bus in programmable logic controller (PLC) power modules. IC Role / Device Role / Timing Role: Zener reference diode providing precise 19 V clamp for LDO input stage. Use Value: Maintains regulation within ±2% across −40 to +85 °C ambient, reducing need for trimming resistors. |
Use Scenario: Protecting microcontroller I/O pins against load-dump transients in body control modules. IC Role / Device Role / Timing Role: Fast-response shunt clamp absorbing 8.3 ms surges up to 5.3 A. Use Value: Prevents latch-up or damage during ISO 7637-2 Pulse 5a events without adding TVS delay. |
| Test Equipment Reference Voltage | LED Driver Current Sensing Bias |
Use Scenario: Generating stable 19 V reference for DAC calibration in bench multimeters. IC Role / Device Role / Timing Role: Precision voltage reference source with low dynamic impedance (3.0 Ω). Use Value: Limits reference drift to <0.5% over 10–100 mA load variation, improving measurement accuracy. |
Use Scenario: Biasing current-sense amplifier in constant-current LED driver for street lighting. IC Role / Device Role / Timing Role: Zener-based bias network setting gain and offset for shunt sensing. Use Value: Enables accurate current regulation across wide temperature range due to matched TC with sense resistor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5356B | Axial-leaded T-18 package; identical electrical specs but no RoHS option; RθJA ≈ 120 °C/W vs. 90 °C/W for SMBG | Requires through-hole assembly; unsuitable for high-density SMT layouts | Select when legacy through-hole design or manual prototyping is required |
| SMBJ5356B | J-bend DO-214AA package; same VZ/IZT/IZM but higher RθJA (100 °C/W); non-RoHS only | Limited thermal performance in compact enclosures; no matte-tin finish option | Choose only if DO-214AA footprint already exists and RoHS compliance is not mandated |
Compared with SMBG5356CE3/TR13, 1N5356B offers identical regulation but lacks surface-mount compatibility and RoHS compliance, while SMBJ5356B shares the SMT form factor but sacrifices thermal efficiency and environmental compliance-making SMBG5356CE3/TR13 the optimal choice for new RoHS-compliant, thermally demanding SMT designs.
Availability
SMBG5356CE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive ECUs, test equipment references, and LED driver bias networks requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBG5356CE3/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 engineered to deliver JEDEC-standard Zener performance in a gull-wing surface-mount package optimized for automated assembly, thermal reliability, and RoHS compliance in mission-critical power regulation systems.
FAQ
What is the Zener voltage tolerance for SMBG5356CE3/TR13?
The SMBG5356CE3/TR13 has a Zener voltage tolerance of ±2%, as indicated by the "C" suffix in the part number per Microsemi's nomenclature. This means its breakdown voltage is guaranteed between 18.62 V and 19.38 V when tested at 65 mA and 25 °C. The tighter tolerance supports precision regulation where ±5% devices would introduce unacceptable error margins.
Can SMBG5356CE3/TR13 replace 1N5356B in existing designs?
Yes, SMBG5356CE3/TR13 is electrically equivalent to 1N5356B per Microsemi documentation, sharing identical VZ, IZT, ZZT, and IZM specifications. However, it requires PCB layout changes due to its DO-215AA gull-wing footprint versus the axial T-18 package of 1N5356B. Thermal performance improves with RθJL = 25 °C/W, but mechanical mounting differs entirely.
What is the maximum surge current rating for SMBG5356CE3/TR13?
The SMBG5356CE3/TR13 is rated for a non-repetitive peak surge current (IZSM) of 5.3 A, defined as the maximum value of an 8.3 ms half-sine waveform. This rating enables effective clamping of transient events such as load dump or ESD-induced spikes in automotive and industrial environments without permanent degradation.
Is SMBG5356CE3/TR13 RoHS compliant?
Yes, SMBG5356CE3/TR13 is RoHS compliant, as confirmed by the "e3" suffix in the part number and Microsemi's specification stating matte-tin plating meets RoHS Directive 2011/65/EU. It contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits and is qualified for lead-free reflow processes.
What is the thermal resistance junction-to-ambient for SMBG5356CE3/TR13?
The SMBG5356CE3/TR13 has a thermal resistance junction-to-ambient (RθJA) of 90 °C/W when mounted on a standard FR4 PCB with 1 oz copper and Microsemi's recommended pad layout. This value assumes natural convection cooling; actual performance improves with added copper area or forced airflow, critical for sustaining 5 W dissipation in enclosed systems.
SMBG5356CE3/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):
- 19 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 3 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 13.7 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)
SMBG5356CE3/TR13 FAQ
1.How can I place an order for SMBG5356CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5356CE3/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 SMBG5356CE3/TR13 reliable?
The price and inventory of SMBG5356CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5356CE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5356CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5356CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5356CE3/TR13?
SMBG5356CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5356CE3/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 SMBG5356CE3/TR13?
For technical support, including SMBG5356CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5356CE3/TR13 requirements.
6.How does Aetrix verify that SMBG5356CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5356CE3/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 SMBG5356CE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5356CE3/TR13?
All SMBG5356CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5356CE3/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 SMBG5356CE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5356CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5356CE3/TR13 Tags
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