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Microchip Technology SMBG5353B/TR13
- Part No.:
- SMBG5353B/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5353B/TR13.pdf
- Description:
- DIODE ZENER 16V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,941
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Product details
Overview
SMBG5353B/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal breakdown voltage of 16 V, ±5% tolerance (B suffix), 2.5 Ω dynamic impedance at 75 mA test current, and maximum regulator current of 6.0 A at 25 °C lead temperature. It serves as a precision voltage reference and overvoltage clamp in power supply feedback loops and transient protection circuits.
For engineers reviewing the SMBG5353B/TR13 datasheet, SMBG5353B/TR13 pinout, SMBG5353B/TR13 application, or SMBG5353B/TR13 equivalent, key selection criteria include Zener voltage accuracy, surge current capability (6.0 A), 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-biased breakdown mode with a specified Zener voltage of 16 V measured at 75 mA (IZT) and 30 °C lead temperature. Its low dynamic impedance (2.5 Ω) ensures stable regulation across varying load currents, while its 5 W power rating is valid only when lead temperature remains ≤25 °C.
The SMBG5353B/TR13 uses a void-free thermosetting epoxy case (UL94V-0), gull-wing tin-plated terminals per MIL-STD-750 method 2026, and exhibits moisture sensitivity level 1 - eliminating dry-pack requirements. Cathode polarity is marked by a band; operation requires cathode-positive biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 16 V ±5% at 75 mA IZT - defines precise clamping threshold for feedback or protection circuits |
| Power Dissipation (PD) | 5.0 W at TL ≤25 °C - requires thermal management via PCB copper pour or heatsink to sustain full rating |
| Dynamic Impedance (ZZT) | 2.5 Ω at 75 mA - enables tight voltage regulation under dynamic load changes |
| Max Regulator Current (IZM) | 6.0 A - peak DC current supported before thermal runaway at rated power |
| Surge Current (IZSM) | 6.0 A (8.3 ms half-sine) - withstands short-duration transients without degradation |
| Junction Temp Range | –65 to +150 °C - supports operation in automotive under-hood and industrial environments |
| Thermal Resistance (RθJL) | 25 °C/W - quantifies heat transfer efficiency from junction to solder lead; critical for layout thermal design |
Pinout & Package
DO-215AA gull-wing surface-mount package with two terminals: anode and cathode. Cathode identified by molded band; device must be biased with banded end positive relative to anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or low-side return path; establishes reference potential for Zener conduction |
| Cathode | Regulated output node | Banded terminal; connected to voltage node requiring clamping or regulation; carries full Zener current |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N53xxB equivalent | Fully compatible with legacy 1N5353B designs - same electrical specs, test methods, and qualification standards |
| Gull-wing leads (DO-215AA) | Enables visual solder joint inspection and high-density placement on compact PCBs |
| Moisture Sensitivity Level 1 | No dry-pack or baking required prior to reflow - reduces manufacturing overhead and handling risk |
| RoHS-compliant matte-tin plating | Meets IPC-J-STD-020B and EU RoHS Directive 2011/65/EU; suitable for lead-free assembly |
| High surge current rating | 6.0 A non-repetitive 8.3 ms half-sine pulse - protects downstream circuitry from ESD and lightning-induced surges |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Clamp for 15 V Rail |
|---|---|
Use Scenario: Stabilizes output voltage in isolated flyback converters by feeding error signal to optocoupler input. IC Role / Device Role / Timing Role: Precision voltage reference and error amplifier bias element. Use Value: 16 V Zener voltage matches typical 15 V rail +5% margin; ±5% tolerance ensures consistent regulation across production lots. |
Use Scenario: Limits transient overshoot on a 15 V microcontroller I/O rail during hot-swap or load-dump events. IC Role / Device Role / Timing Role: Fast-acting shunt protector activated above 16.8 V (16 V × 1.05). Use Value: 6.0 A surge rating absorbs 500 mJ pulses (½ × L × I²) without failure; gull-wing leads minimize parasitic inductance. |
| Industrial Sensor Signal Conditioning | Programmable Logic Controller Input Protection |
Use Scenario: Provides stable 16 V reference for 4–20 mA transmitter loop-powered sensors operating in harsh environments. IC Role / Device Role / Timing Role: Low-drift voltage reference source for DAC or op-amp biasing. Use Value: 2.5 Ω dynamic impedance maintains <10 mV deviation across 10–100 mA load variation; –65 to +150 °C range covers extended industrial temp. |
Use Scenario: Clamps induced surges on 24 V digital input channels exposed to relay coil back-EMF or field wiring noise. IC Role / Device Role / Timing Role: Primary shunt suppressor placed directly at connector entry point. Use Value: 5 W continuous dissipation handles sustained 16 V × 312 mA loads; DO-215AA footprint fits standard PLC module spacing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5353B | Axial-leaded T-18 package; identical electrical specs but higher RθJA (120 °C/W vs. 25 °C/W); no gull-wing visibility. | Requires through-hole mounting and manual inspection; unsuitable for high-density SMT lines. | Select when legacy through-hole assembly or vertical mounting is required; avoid for new SMT designs. |
| SMBJ5353 | DO-214AA J-bend package; same VZ and IZM, but RθJL = 30 °C/W and lower surge rating (5.5 A vs. 6.0 A). | Less efficient thermal transfer; slightly reduced transient robustness in high-stress environments. | Acceptable for cost-sensitive consumer applications where 0.5 A surge margin is acceptable. |
Compared with 1N5353B and SMBJ5353, SMBG5353B/TR13 delivers superior thermal performance (25 °C/W vs. ≥30 °C/W), visible solder joints for AOI, and highest surge current rating - making it optimal for industrial-grade SMT power regulation and protection.
Availability
SMBG5353B/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor interfaces, and programmable logic controller input protection requiring stable component supply, RoHS compliance, and high-reliability surge handling.
Supply support for SMBG5353B/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 applications - emphasizing JEDEC compatibility, visual process control, and extended temperature operation.
FAQ
What is the Zener voltage tolerance of SMBG5353B/TR13?
The "B" suffix in SMBG5353B/TR13 indicates a ±5% Zener voltage tolerance. At 25 °C lead temperature, the measured VZ falls between 15.2 V and 16.8 V when tested at 75 mA (IZT). This tolerance is guaranteed per JEDEC specification and verified during 100% production testing.
Can SMBG5353B/TR13 replace 1N5353B in existing designs?
Yes - SMBG5353B/TR13 is a direct surface-mount functional replacement for 1N5353B, matching all electrical parameters including VZ, IZM, ZZT, and surge rating. However, the DO-215AA gull-wing footprint differs from the axial T-18 package, requiring PCB layout revision.
What is the maximum continuous power dissipation for SMBG5353B/TR13?
SMBG5353B/TR13 is rated for 5.0 W continuous power dissipation only when lead temperature (TL) is maintained at or below 25 °C. At ambient conditions, derating applies: e.g., 1.38 W at TA = 25 °C on FR4 with recommended pad layout, per Figure 1 in the datasheet.
Is SMBG5353B/TR13 RoHS compliant?
Yes - SMBG5353B/TR13 features RoHS-compliant annealed matte-tin plating per J-STD-020B and EU Directive 2011/65/EU. The "TR13" suffix confirms tape-and-reel packaging; the "e3" marking may appear on the device body per Microsemi nomenclature.
How is cathode polarity identified on SMBG5353B/TR13?
The cathode of SMBG5353B/TR13 is marked by a distinct molded band on the black epoxy body. During operation, the banded end must be held positive relative to the anode - i.e., reverse bias - to enable Zener breakdown and regulation behavior.
SMBG5353B/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):
- 16 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 11.5 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)
SMBG5353B/TR13 FAQ
1.How can I place an order for SMBG5353B/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5353B/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 SMBG5353B/TR13 reliable?
The price and inventory of SMBG5353B/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5353B/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5353B/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5353B/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5353B/TR13?
SMBG5353B/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5353B/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 SMBG5353B/TR13?
For technical support, including SMBG5353B/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5353B/TR13 requirements.
6.How does Aetrix verify that SMBG5353B/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5353B/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 SMBG5353B/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5353B/TR13?
All SMBG5353B/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5353B/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 SMBG5353B/TR13 part is unused and in its original packaging.
Return procedure for SMBG5353B/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5353B/TR13 Tags
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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