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Microchip Technology SMBG5370BE3/TR13
- Part No.:
- SMBG5370BE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5370BE3/TR13.pdf
- Description:
- DIODE ZENER 56V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,728
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Product details
Overview
SMBG5370BE3/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 56 V, ±5% tolerance (B suffix), 20 mA test current, 35 Ω dynamic impedance at IZT, and DO-215AA gull-wing package. It regulates voltage in power supply feedback loops, overvoltage protection circuits, and reference voltage generation under varying load and temperature.
For engineers reviewing the SMBG5370BE3/TR13 datasheet, SMBG5370BE3/TR13 pinout, SMBG5370BE3/TR13 application, or SMBG5370BE3/TR13 equivalent, key selection criteria include Zener voltage accuracy, surge current capability (280 A), thermal resistance (25 °C/W junction-to-lead), and RoHS-compliant matte-tin plating for lead-free assembly.
Technical Context
This device operates as a precision voltage reference in reverse-biased breakdown mode, with specified regulation at 20 mA (IZT) and stable knee behavior down to 1 mA (IZK). Its 35 Ω dynamic impedance (ZZT) ensures minimal voltage variation across operating current changes.
The DO-215AA gull-wing package provides visible solder joints, Level 1 moisture sensitivity (no dry pack required), and thermal performance optimized for FR4 PCBs with recommended footprint-achieving 5.0 W dissipation at TL < 25 °C or 1.38 W at TA = 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 56 V ±5% at 20 mA - defines precise regulation point for feedback and clamping circuits |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - supports high-energy transient suppression without derating on heatsinked leads |
| Dynamic Impedance (ZZT) | 35 Ω at 20 mA - limits output voltage drift to <0.7 V per 20 mA load change |
| Max Surge Current (IZSM) | 280 A (8.3 ms half-sine) - withstands IEC 61000-4-5 Level 4 surges without failure |
| Junction-to-Lead Thermal Resistance | 25 °C/W - enables direct thermal path to PCB copper, critical for sustained 5 W operation |
| Reverse Leakage (IR) | 0.5 µA at 42.6 V - ensures negligible standby current in high-impedance reference nodes |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - allows standard SMT reflow without baking or dry pack |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode band marking; terminals are anode and cathode only - no internal circuitry or additional pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Breakdown terminal | Connected to regulated voltage node; must be held positive relative to anode during operation |
| Anode | Reference terminal | Connected to ground or lower-potential rail; completes reverse-bias path for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5370B equivalent | Identical electrical specs and test methods - enables drop-in replacement in legacy designs |
| Gull-wing lead form | Visible solder fillets and automated optical inspection compatibility - improves SMT process yield |
| RoHS-compliant matte-tin plating | Meets IPC-J-STD-609 Class 1 - supports lead-free reflow profiles up to 260 °C for 10 s |
| Level 1 moisture classification | No dry pack or baking required - reduces handling cost and avoids moisture-induced popcorning |
| High surge current rating | 280 A non-repetitive peak - protects downstream ICs against lightning-induced transients in industrial interfaces |
Applications
| Switch-Mode Power Supply Feedback | Industrial Overvoltage Clamp |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback converters using optocoupler-coupled feedback. IC Role / Device Role / Timing Role: Zener reference for TL431-like shunt regulator circuit; sets precise 56 V threshold. Use Value: Maintains ±1% output regulation across line/load/temperature with 35 Ω dynamic impedance limiting error contribution. | Use Scenario: Clamps induced surges on 48 V DC bus in factory automation equipment. IC Role / Device Role / Timing Role: Primary overvoltage protection element placed across bus rails before DC-DC converters. Use Value: Absorbs 280 A surge energy (8.3 ms) without degradation, preventing MOSFET avalanche failure. |
| Programmable Voltage Reference | Automotive ECU Sensor Biasing |
Use Scenario: Provides stable 56 V bias for high-voltage op-amp input stages in test instrumentation. IC Role / Device Role / Timing Role: Precision shunt reference replacing multi-resistor divider networks. Use Value: Delivers 56 V ±2.8 V over -65 to +150 °C, eliminating temperature-induced drift in measurement front-ends. | Use Scenario: Supplies regulated bias to piezoresistive pressure sensors in engine control units. IC Role / Device Role / Timing Role: Low-noise voltage reference for sensor excitation in harsh under-hood environments. Use Value: Withstands 150 °C junction temperature and exhibits <0.5 µA leakage at 42.6 V, preserving sensor signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5370B | Same Zener voltage (56 V), ±5%, 5 W rating, axial T-18 package | Through-hole mounting; higher RθJA (125 °C/W); not suitable for high-density SMT layouts | Select when legacy through-hole assembly or manual prototyping is required |
| SMBJ5370B | Same electrical specs but DO-214AA (J-bend) package; identical RoHS plating and surge rating | Different footprint and solder joint geometry; requires PCB layout revision | Select when existing design uses SMBJ footprint or requires J-bend mechanical compliance |
Compared with SMBG5370BE3/TR13, 1N5370B offers identical regulation but lacks SMT manufacturability and thermal performance, while SMBJ5370B matches all electrical parameters but demands footprint adaptation-making SMBG5370BE3/TR13 optimal for new high-density, thermally constrained designs.
Availability
SMBG5370BE3/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial overvoltage clamps, and programmable voltage references requiring stable component supply across automotive, industrial, and test equipment programs.
Supply support for SMBG5370BE3/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 SMBG53xxB series was designed specifically for surface-mount voltage regulation and transient suppression in space-constrained, high-surge environments-emphasizing JEDEC compatibility, thermal robustness, and RoHS compliance.
FAQ
What is the Zener voltage tolerance and test current for SMBG5370BE3/TR13?
The SMBG5370BE3/TR13 has a Zener voltage of 56 V with ±5% tolerance (denoted by the "B" suffix) and is tested at 20 mA (IZT). This tolerance ensures the actual breakdown voltage falls between 53.2 V and 58.8 V under standard conditions, supporting reliable feedback loop design in power converters where tight regulation is required.
Does SMBG5370BE3/TR13 require dry packing before reflow soldering?
No, SMBG5370BE3/TR13 has a moisture sensitivity level (MSL) of Level 1 per IPC/JEDEC J-STD-020B, meaning it can be stored and processed under standard ambient conditions without baking or dry pack. This eliminates pre-reflow handling steps and reduces risk of popcorning during lead-free reflow at 260 °C.
What is the maximum non-repetitive surge current rating for SMBG5370BE3/TR13?
The SMBG5370BE3/TR13 is rated for a maximum Zener surge current (IZSM) of 280 A, defined as the peak value of a non-repetitive 8.3 ms half-sine waveform. This rating enables robust protection against IEC 61000-4-5 surge events in industrial and telecom power interfaces without degradation.
How does the DO-215AA package of SMBG5370BE3/TR13 improve thermal performance compared to axial packages?
The DO-215AA gull-wing package of SMBG5370BE3/TR13 achieves a junction-to-lead thermal resistance of 25 °C/W-significantly lower than the ~125 °C/W typical of axial T-18 packages like 1N5370B. This allows SMBG5370BE3/TR13 to sustain its full 5.0 W rating with proper PCB copper land, whereas axial versions derate rapidly above 25 °C ambient.
Is SMBG5370BE3/TR13 compatible with JEDEC-standard 1N5370B designs?
Yes, SMBG5370BE3/TR13 is explicitly stated in the datasheet as electrically and functionally equivalent to JEDEC-registered 1N5370B, with identical Zener voltage, tolerance, test current, dynamic impedance, and surge ratings. It serves as a surface-mount drop-in replacement-though PCB layout must accommodate the DO-215AA footprint instead of axial leads.
SMBG5370BE3/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):
- 56 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 35 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 40.3 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)
SMBG5370BE3/TR13 FAQ
1.How can I place an order for SMBG5370BE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5370BE3/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 SMBG5370BE3/TR13 reliable?
The price and inventory of SMBG5370BE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5370BE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5370BE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5370BE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5370BE3/TR13?
SMBG5370BE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5370BE3/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 SMBG5370BE3/TR13?
For technical support, including SMBG5370BE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5370BE3/TR13 requirements.
6.How does Aetrix verify that SMBG5370BE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5370BE3/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 SMBG5370BE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5370BE3/TR13?
All SMBG5370BE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5370BE3/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 SMBG5370BE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5370BE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5370BE3/TR13 Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
onsemi
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MM5Z5V1ST1G
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SMAZ12-13-F
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