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Microchip Technology SMBG5370A/TR13
- Part No.:
- SMBG5370A/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5370A/TR13.pdf
- Description:
- DIODE ZENER 56V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,710
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Product details
Overview
SMBG5370A/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal breakdown voltage of 56 V, ±10% tolerance, 20 mA test current, and 35 Ω dynamic impedance at IZT; used for precision voltage regulation in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the SMBG5370A/TR13 datasheet, SMBG5370A/TR13 pinout, SMBG5370A/TR13 application, or SMBG5370A/TR13 equivalent, this page delivers verified electrical parameters, DO-215AA gull-wing package details, thermal derating behavior, and RoHS-compliant alternatives aligned to JEDEC 1N5370A specifications.
Technical Context
This device operates as a two-terminal voltage reference in reverse-biased mode, maintaining stable output voltage across 1.0 mA to 20 mA operating current range with minimal voltage drift versus temperature (−65 °C to +150 °C junction range). Its 25 °C/W junction-to-lead thermal resistance enables reliable 5 W dissipation when soldered to copper leads.
The SMBG5370A/TR13 exhibits 0.5 µA maximum reverse leakage at 42.6 V, 35 Ω dynamic impedance at 20 mA, and 280 A non-repetitive surge current rating for 8.3 ms half-sine waveform-key for transient suppression in DC-DC converter outputs and industrial sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 56 V ±10% at 20 mA - defines regulated output level in feedback networks and clamp thresholds. |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - supports high-current regulation without external heatsink under lead-temperature control. |
| Dynamic Impedance (ZZT) | 35 Ω at IZT = 20 mA - determines load regulation error and ripple rejection in closed-loop supplies. |
| Reverse Leakage (IR) | 0.5 µA max at VR = 42.6 V - ensures low quiescent current in standby-mode protection circuits. |
| Surge Current (IZSM) | 280 A (8.3 ms half-sine) - withstands lightning-induced transients on 24/48 V industrial bus lines. |
| Junction Temperature Range | −65 °C to +150 °C - validated for automotive under-hood and outdoor telecom equipment operation. |
| Thermal Resistance (RθJL) | 25 °C/W - enables accurate thermal modeling when mounted to PCB copper pour or metal-core substrate. |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode band marking; terminals are anode (unbanded end) and cathode (banded end); polarity must be observed during PCB layout to ensure correct reverse-bias operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; grounded or connected to lower-potential node in Zener regulation. | Must be routed to system ground or return path; trace width ≥ 0.5 mm required for 5 W conduction. |
| Cathode | Current exit terminal in reverse bias; connected to regulated voltage node or clamping point. | Banded end connects to feedback divider or protected rail; requires thermal relief pad per Microsemi recommended footprint. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5370A Equivalent | Fully interchangeable with axial 1N5370A in electrical specs and test methods-enables SMT upgrade without circuit redesign. |
| Moisture Sensitivity Level 1 | No dry pack or baking required before reflow-reduces manufacturing overhead and avoids moisture-induced popcorning. |
| Gull-Wing Lead Form | Visible solder joints enable automated optical inspection (AOI) and simplify rework on dense PCBs. |
| RoHS Compliant Matte-Tin Plating | Meets IPC-J-STD-020B solderability requirements and eliminates Pb-based assembly constraints. |
| High Surge Withstand | 280 A peak surge rating supports IEC 61000-4-5 Level 3 compliance in industrial power input stages. |
Applications
| Industrial Power Supply Feedback | Automotive Battery Clamp Protection |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback converters using optocoupler feedback loop. IC Role / Device Role / Timing Role: Zener reference sets upper threshold for TL431 or optocoupler LED current. Use Value: 56 V rating matches 48 V system bus with 15% margin; ±10% tolerance accommodates production spread without trimming. |
Use Scenario: Clamps transients on 24 V vehicle battery line during load dump events. IC Role / Device Role / Timing Role: Standby shunt element that conducts only above 56 V to protect downstream ECUs. Use Value: 280 A surge rating exceeds ISO 7637-2 Pulse 5a requirement; DO-215AA gull-wing aids thermal coupling to chassis ground. |
| Telecom DC-DC Converter Output Clamp | Test Equipment Reference Voltage Source |
Use Scenario: Limits overshoot on +56 V telecom rectifier output during step-load transitions. IC Role / Device Role / Timing Role: Fast-response voltage clamp placed directly at converter output capacitor. Use Value: 35 Ω ZZT minimizes clamping voltage rise under 1–2 A transient currents; 25 °C/W RθJL enables direct copper pour mounting. |
Use Scenario: Provides stable 56 V reference for calibration of high-voltage DMMs and insulation testers. IC Role / Device Role / Timing Role: Precision voltage source in series-shunt regulator topology with low-drift op-amp buffer. Use Value: 0.5 µA leakage at 42.6 V ensures <1 ppm error contribution; −65 °C to +150 °C range supports environmental chamber testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5370A | Axial-leaded T-18 package; identical VZ, IZT, ZZT, and IZM; no gull-wing geometry. | Requires through-hole assembly; unsuitable for high-density SMT lines. | Select when legacy board reuse or manual prototyping is prioritized over automated production. |
| SMBJ5370A | DO-214AA J-bend package; same electrical specs but 90 °C/W RθJA vs. 25 °C/W RθJL of SMBG5370A/TR13. | Lower thermal performance limits continuous power to ~1.4 W on FR4; not suitable for 5 W sustained dissipation. | Choose only if existing DO-214AA footprint exists and thermal budget permits derated operation. |
Compared with 1N5370A and SMBJ5370A, SMBG5370A/TR13 uniquely combines full 5 W lead-temperature-rated power, visible gull-wing solder joints, and Level 1 moisture sensitivity-making it optimal for volume SMT production of industrial power modules requiring field-proven reliability.
Availability
SMBG5370A/TR13 is available at Aetrix Electronics and suitable for industrial power supply feedback, automotive battery clamp protection, and telecom DC-DC converter output clamp applications requiring stable component supply and RoHS-compliant sourcing.
Supply support for SMBG5370A/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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The SMBG53xxA/B series was engineered specifically for surface-mount voltage regulation and transient suppression in harsh-environment power systems where thermal robustness and JEDEC compatibility are mandatory.
FAQ
What is the Zener voltage tolerance for SMBG5370A/TR13?
The SMBG5370A/TR13 has a ±10% Zener voltage tolerance, meaning its breakdown voltage ranges from 50.4 V to 61.6 V at 20 mA test current. This tolerance is indicated by the "A" suffix in the part number and aligns with JEDEC 1N5370A specifications. The SMBG5370A/TR13 maintains this tolerance across its full operating temperature range of −65 °C to +150 °C.
Can SMBG5370A/TR13 replace 1N5370A in existing designs?
Yes, SMBG5370A/TR13 is a direct surface-mount replacement for the axial 1N5370A, matching all key electrical parameters including VZ = 56 V, IZT = 20 mA, ZZT = 35 Ω, and PD = 5 W. The SMBG5370A/TR13 uses DO-215AA gull-wing leads instead of T-18 leads, so PCB footprint must be updated-but no circuit changes are needed for equivalent regulation performance.
What is the maximum surge current rating for SMBG5370A/TR13?
The SMBG5370A/TR13 is rated for 280 A maximum non-repetitive surge current (IZSM) under an 8.3 ms half-sine waveform, as specified in Microsemi's T4-LDS-0246-1 datasheet. This rating applies to transient suppression in 24 V and 48 V industrial systems and exceeds IEC 61000-4-5 Level 3 requirements. The SMBG5370A/TR13 achieves this via optimized silicon structure and gull-wing thermal path to PCB copper.
Is SMBG5370A/TR13 RoHS compliant?
Yes, SMBG5370A/TR13 is RoHS compliant, featuring annealed matte-tin plating per J-STD-020B and marked with "e3" per Microsemi nomenclature. The "A" suffix denotes ±10% voltage tolerance, while RoHS compliance is inherent to the TR13 tape-and-reel packaging variant. No lead content is present, and the device meets EU Directive 2011/65/EU requirements.
What is the thermal resistance of SMBG5370A/TR13?
The SMBG5370A/TR13 has a junction-to-lead thermal resistance (RθJL) of 25 °C/W, measured under standard conditions per Microsemi T4-LDS-0246-1. This value enables full 5 W power dissipation when the lead temperature is maintained below 25 °C-achievable via adequate copper pour or thermal vias. Its junction-to-ambient resistance is 90 °C/W on FR4 with recommended footprint.
SMBG5370A/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:
- ±10%
- 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)
SMBG5370A/TR13 FAQ
1.How can I place an order for SMBG5370A/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5370A/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 SMBG5370A/TR13 reliable?
The price and inventory of SMBG5370A/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5370A/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5370A/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5370A/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5370A/TR13?
SMBG5370A/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5370A/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 SMBG5370A/TR13?
For technical support, including SMBG5370A/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5370A/TR13 requirements.
6.How does Aetrix verify that SMBG5370A/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5370A/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 SMBG5370A/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5370A/TR13?
All SMBG5370A/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5370A/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 SMBG5370A/TR13 part is unused and in its original packaging.
Return procedure for SMBG5370A/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5370A/TR13 Tags
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