My Inquiry
My Account
Microchip Technology SMBG5356A/TR13
- Part No.:
- SMBG5356A/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5356A/TR13.pdf
- Description:
- DIODE ZENER 19V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,847
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBG5356A/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 19 V, ±10% tolerance (A suffix), 65 mA test current (IZT), and 250 Ω dynamic impedance (ZZT) at IZT - used for precision voltage regulation in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the SMBG5356A/TR13 datasheet, SMBG5356A/TR13 pinout, SMBG5356A/TR13 application, or SMBG5356A/TR13 equivalent, key selection criteria include Zener voltage accuracy, surge current capability (5.3 A IZSM), thermal resistance (25 °C/W junction-to-lead), DO-215AA gull-wing package compatibility, and RoHS-compliant matte-tin plating.
Technical Context
This device operates in reverse breakdown to maintain stable voltage across wide current (1–65 mA) and temperature (−65 to +150 °C) ranges. Its low dynamic impedance (250 Ω at 65 mA) ensures minimal voltage variation under load changes.
The SMBG5356A/TR13 uses a void-free thermosetting epoxy case (UL94V-0), gull-wing tin-lead or RoHS-compliant matte-tin terminals, and cathode polarity marked by a band - requiring the banded end to be biased positive relative to the anode during operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 19 V ±10% - regulates at 17.1–20.9 V under 65 mA test current, enabling robust reference design in noisy environments. |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - supports high-energy transient suppression when mounted with adequate heat sinking. |
| Dynamic Impedance (ZZT) | 250 Ω at IZT = 65 mA - limits output voltage deviation to ~16.25 mV per 65 µA current change near regulation point. |
| Max Surge Current (IZSM) | 5.3 A (8.3 ms half-sine) - withstands common AC line surges and inductive kickback without degradation. |
| Junction-to-Lead Rθ | 25 °C/W - enables direct thermal path to PCB copper, critical for sustained 5 W operation on FR4 with recommended pad layout. |
| Reverse Leakage (IR) | 0.5 µA at VR = 13.7 V - ensures negligible standby current in battery-powered voltage monitor circuits. |
| Forward Voltage (VF) | 1.2 V at 1.0 A - allows use as clamp diode in bidirectional protection schemes without excessive forward drop. |
Pinout & Package
DO-215AA gull-wing surface-mount package: plastic-encapsulated, moisture sensitivity level 1 (no dry pack required), 0.1 g weight, UL94V-0 rated epoxy body, cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink in reverse bias; forward conduction path | Connected to system ground or lower-potential node; carries full surge current during clamping. |
| Cathode | Regulated output node in reverse bias; higher-potential terminal | Banded end - must be held positive relative to anode; connects to feedback node or protected rail. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5356B equivalent | Identical electrical specs and test methods - enables drop-in replacement in legacy designs using axial 1N5356B. |
| Gull-wing lead form | Visible solder joints and automated optical inspection (AOI) compatibility - improves manufacturing yield on high-density PCBs. |
| Level 1 moisture sensitivity | No baking or dry pack required before reflow - reduces handling cost and avoids moisture-induced popcorning. |
| RoHS-compliant matte-tin plating | Meets IPC-J-STD-020B solderability requirements - ensures reliable reflow joint formation without lead-based alloys. |
| High IZM (65 mA) | Supports stable regulation across 1–65 mA operating range - eliminates need for external ballast resistors in many applications. |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Reference |
|---|---|
Use Scenario: Regulates error amplifier input in isolated flyback converter feedback network. IC Role / Device Role / Timing Role: Precision voltage reference for optocoupler-driven secondary-side regulation. Use Value: 19 V Zener voltage provides headroom above 15 V auxiliary rail while maintaining tight loop stability via 250 Ω ZZT. |
Use Scenario: Provides stable excitation voltage for bridge-based pressure transducers in factory automation. IC Role / Device Role / Timing Role: Low-drift analog reference source with <0.5 µA leakage at 13.7 V. Use Value: ±10% tolerance and Level 1 moisture rating ensure long-term calibration stability in uncontrolled ambient conditions. |
| DC Bus Overvoltage Clamp | Automotive ECU Protection |
Use Scenario: Clamps 24 V DC bus transients caused by relay switching or motor commutation. IC Role / Device Role / Timing Role: Transient voltage suppressor with 5.3 A non-repetitive surge rating. Use Value: 5 W power rating and 25 °C/W RθJL enable repeated 8.3 ms surges without thermal runaway on standard FR4. |
Use Scenario: Protects microcontroller I/O pins from load dump spikes in 12 V automotive subsystems. IC Role / Device Role / Timing Role: Primary overvoltage shunt element in CAN/LIN node protection circuitry. Use Value: Gull-wing DO-215AA package fits compact ECU layouts; RoHS-compliant plating meets automotive ELV directive. |
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 VZ (19 V), IZT (65 mA), ZZT (250 Ω), and PD (5 W). | Requires through-hole assembly and larger board area; not suitable for high-density SMT lines. | Select 1N5356B only for legacy repair, prototyping with breadboards, or where manual assembly is preferred. |
| SMBJ5356 | DO-214AA (J-bend) package; same electrical specs but higher RθJA (90 °C/W vs. 25 °C/W RθJL); no gull-wing visual inspection advantage. | Limited thermal performance in high-power continuous operation; less compatible with AOI systems. | Choose SMBJ5356 for cost-sensitive designs where thermal margin exceeds 1.38 W on FR4, and AOI is not required. |
Compared with SMBG5356A/TR13, 1N5356B offers identical regulation but sacrifices SMT efficiency and space savings, while SMBJ5356 trades thermal reliability and manufacturability for lower package cost - making SMBG5356A/TR13 optimal for production-grade SMT power regulation where thermal control and process yield matter.
Availability
SMBG5356A/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor references, and DC bus overvoltage clamping requiring stable component supply, consistent Zener voltage tolerance, and RoHS-compliant gull-wing packaging.
Supply support for SMBG5356A/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 RF solutions for aerospace, defense, and industrial markets.
The SMBG53xx series was designed specifically for surface-mount voltage regulation and transient suppression in space-constrained, high-current power systems - emphasizing thermal robustness, JEDEC compatibility, and process-ready packaging.
FAQ
What is the Zener voltage tolerance for SMBG5356A/TR13?
The "A" suffix in SMBG5356A/TR13 specifies a ±10% Zener voltage tolerance, meaning its regulated voltage falls between 17.1 V and 20.9 V at 65 mA test current and 25 °C. This tolerance is confirmed in the Electrical Characteristics table on page 3 of Microsemi's T4-LDS-0246-1 datasheet, where SMBG5356B (±5%) is listed separately - confirming the A-suffix designation applies exclusively to SMBG5356A/TR13.
Does SMBG5356A/TR13 require dry packing before reflow soldering?
No, SMBG5356A/TR13 has a moisture sensitivity level (MSL) of Level 1 per IPC/JEDEC J-STD-020B, meaning it may be stored indefinitely at ≤30 °C/60% RH without dry packing or baking. This is explicitly stated in the "APPLICATIONS / BENEFITS" section and "MECHANICAL and PACKAGING" section of the datasheet, eliminating moisture-related reflow defects like popcorning.
What is the maximum surge current rating for SMBG5356A/TR13?
SMBG5356A/TR13 has a maximum non-repetitive Zener surge current (IZSM) of 5.3 A for an 8.3 ms half-sine waveform, as specified in the Electrical Characteristics table on page 3. This value is derived from its 5 W power rating and 19 V Zener voltage, enabling reliable protection against common power-line transients and inductive switching spikes.
Is SMBG5356A/TR13 RoHS compliant?
Yes, SMBG5356A/TR13 uses RoHS-compliant annealed matte-tin plating on its gull-wing terminals, as confirmed in the "FEATURES" and "MECHANICAL and PACKAGING" sections. The "e3" marking variant exists for explicit RoHS identification, but the base SMBG5356A/TR13 part number - per Microsemi documentation - ships with RoHS-compliant finish unless otherwise specified.
How does the DO-215AA package of SMBG5356A/TR13 differ from DO-214AA?
The DO-215AA package of SMBG5356A/TR13 features gull-wing leads enabling visible solder joints and AOI compatibility, whereas DO-214AA (used in SMBJ5356) has J-bend leads that hide solder fillets. Electrically identical, SMBG5356A/TR13 also achieves 25 °C/W junction-to-lead thermal resistance versus 90 °C/W junction-to-ambient for DO-214AA - giving superior thermal performance in high-power operation.
SMBG5356A/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:
- ±10%
- 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)
SMBG5356A/TR13 FAQ
1.How can I place an order for SMBG5356A/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5356A/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 SMBG5356A/TR13 reliable?
The price and inventory of SMBG5356A/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5356A/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5356A/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5356A/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5356A/TR13?
SMBG5356A/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5356A/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 SMBG5356A/TR13?
For technical support, including SMBG5356A/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5356A/TR13 requirements.
6.How does Aetrix verify that SMBG5356A/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5356A/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 SMBG5356A/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5356A/TR13?
All SMBG5356A/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5356A/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 SMBG5356A/TR13 part is unused and in its original packaging.
Return procedure for SMBG5356A/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5356A/TR13 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
