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Microchip Technology SMBG5370C/TR13
- Part No.:
- SMBG5370C/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5370C/TR13.pdf
- Description:
- DIODE ZENER 56V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,532
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Product details
Overview
SMBG5370C/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 56 V, ±2% tolerance (C suffix), DO-215AA gull-wing package, and maximum regulator current of 20 mA at 25 °C - used for precision voltage regulation in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the SMBG5370C/TR13 datasheet, SMBG5370C/TR13 pinout, SMBG5370C/TR13 application, or SMBG5370C/TR13 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (RθJL = 25 °C/W), surge current rating (IZSM = 280 A), moisture sensitivity level (MSL Level 1), and RoHS-compliant matte-tin plating.
Technical Context
This device operates in reverse-biased breakdown mode to maintain stable reference voltage across wide current (IZK = 1.0 mA to IZM = 20 mA) and temperature (–65 to +150 °C) ranges. Its low dynamic impedance (ZZK = 35 Ω @ 1.0 mA) ensures minimal voltage variation under load transients.
The DO-215AA gull-wing package enables visible solder joints and supports high-density PCB layouts. With RθJA = 90 °C/W on FR4 (1 oz Cu), it delivers full 5 W dissipation only when lead temperature (TL) is maintained ≤25 °C - otherwise derated per Figure 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 56 V ±2% at IZT = 20 mA - provides tight regulation for feedback references requiring <±2% error budget. |
| Power Dissipation (PD) | 5.0 W at TL ≤25 °C - requires thermal management via copper pour or heatsinked leads for sustained operation. |
| Dynamic Impedance (ZZK) | 35 Ω @ 1.0 mA - limits output voltage shift during small-signal ripple or transient loading. |
| Max Surge Current (IZSM) | 280 A (8.3 ms half-sine) - withstands lightning-induced or ESD-related surges without degradation. |
| Junction Temp Range | –65 to +150 °C - supports industrial and automotive under-hood applications with no derating below –40 °C. |
| Moisture Sensitivity | IPC/JEDEC J-STD-020B Level 1 - no dry pack or baking required before reflow assembly. |
| Forward Voltage (VF) | 1.2 V @ 1.0 A - defines forward conduction loss if used in bidirectional clamping configurations. |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band; anode and cathode terminals are accessible via two gull-wing leads suitable for automated placement and optical solder-joint inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lower-potential rail; establishes bias polarity for reverse breakdown operation. |
| Cathode | Regulated output node | Banded end; connects to feedback point or protected circuit node; maintains stable 56 V reference under varying load. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5370B equivalent | Identical electrical specs and test methods - enables drop-in replacement for legacy through-hole designs using adapter footprints. |
| RoHS-compliant matte-tin plating | Meets IPC-J-STD-006B solderability requirements and eliminates Pb-based contamination risk in final assemblies. |
| Low Zener knee impedance | 35 Ω at 1 mA ensures stable regulation even at light loads where many Zeners exhibit voltage drift. |
| Gull-wing lead geometry | Enables AOI-compatible solder joint inspection and reduces tombstoning risk during reflow due to balanced thermal mass. |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback or forward converters by feeding error signal to optocoupler input. IC Role / Device Role / Timing Role: Precision voltage reference element in secondary-side feedback network. Use Value: ±2% VZ tolerance and 35 Ω ZZK minimize output voltage drift across line/load/temperature variations. | Use Scenario: Clamps transient overvoltage on DC bus lines (e.g., 48 V telecom or PoE systems) to prevent downstream IC damage. IC Role / Device Role / Timing Role: Standby shunt protector activated above 56 V threshold. Use Value: 280 A non-repetitive surge rating absorbs 8.3 ms surges without parametric shift or failure. |
| Industrial Sensor Excitation | Programmable Reference Divider |
Use Scenario: Provides stable excitation voltage for resistive bridge sensors (e.g., strain gauges) in harsh factory environments. IC Role / Device Role / Timing Role: Low-drift voltage source referenced to system ground. Use Value: MSL Level 1 handling and –65 to +150 °C operation ensure reliability in uncontrolled ambient conditions. | Use Scenario: Serves as adjustable reference node in programmable voltage monitor circuits using resistor dividers. IC Role / Device Role / Timing Role: Fixed 56 V anchor point enabling scalable thresholds via external ratio selection. Use Value: Tight 2% tolerance allows accurate derivation of sub-56 V trip points without calibration overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5370B | Axial-leaded T-18 package; identical VZ, tolerance, and IZM; RθJA = 120 °C/W (higher thermal resistance). | Requires through-hole assembly and larger board area; unsuitable for high-density SMT production. | Select when legacy through-hole compatibility or manual prototyping is prioritized over miniaturization. |
| SMBJ5370C | DO-214AA J-bend package; same VZ, tolerance, and power rating; RθJA = 90 °C/W but RθJL = 30 °C/W (less efficient lead-to-heat-sink transfer). | Compatible with standard SMT pick-and-place but lacks gull-wing visibility for post-reflow AOI. | Select when footprint compatibility with SMBJ-series boards exists and visual solder inspection is not required. |
Compared with SMBG5370C/TR13, 1N5370B trades mountability for higher thermal resistance and larger form factor, while SMBJ5370C retains SMT compatibility but sacrifices gull-wing inspection capability and lead thermal efficiency.
Availability
SMBG5370C/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, and industrial sensor excitation systems requiring stable component supply with RoHS compliance and MSL Level 1 handling.
Supply support for SMBG5370C/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 in space-constrained, thermally demanding applications where JEDEC-compatibility and process-controlled tolerances are critical.
FAQ
What is the Zener voltage tolerance of SMBG5370C/TR13?
The "C" suffix in SMBG5370C/TR13 denotes ±2% Zener voltage tolerance at IZT = 20 mA and TL = 25 °C. This is confirmed in the Part Nomenclature section and Electrical Characteristics table on page 3 of the datasheet, where SMBG5370B (±5%) and SMBG5370A (±10%) are listed as variants. The tighter tolerance supports precision feedback and reference applications.
Does SMBG5370C/TR13 require dry packing before reflow soldering?
No, SMBG5370C/TR13 does not require dry packing. Its moisture sensitivity level is rated IPC/JEDEC J-STD-020B Level 1, meaning it can be stored indefinitely at ≤30 °C/60% RH and processed directly through standard reflow profiles without baking. This is explicitly stated in the Features section on page 1 and confirmed in the Maximum Ratings table footnote.
What is the maximum surge current rating for SMBG5370C/TR13?
SMBG5370C/TR13 has a maximum non-repetitive Zener surge current (IZSM) of 280 A for an 8.3 ms half-sine waveform, as specified in the Electrical Characteristics table on page 3. This value reflects its ability to absorb transient energy without parametric shift or catastrophic failure, making it suitable for surge suppression in DC power rails.
How does the thermal resistance of SMBG5370C/TR13 affect its power handling?
SMBG5370C/TR13 has RθJL = 25 °C/W and RθJA = 90 °C/W (on FR4, 1 oz Cu). Full 5 W dissipation is only achievable when lead temperature (TL) stays ≤25 °C; otherwise, power must be derated per the curve in Figure 1. For ambient-mounted operation, effective power is ~1.38 W at TA = 25 °C - underscoring the need for thermal vias or copper pours.
Is SMBG5370C/TR13 compatible with lead-free reflow processes?
Yes, SMBG5370C/TR13 features RoHS-compliant annealed matte-tin plating and is rated for solder temperature up to 260 °C for 10 seconds, fully compliant with IPC/JEDEC J-STD-020D lead-free reflow profiles. The plating meets MIL-STD-750 Method 2026 for solderability, ensuring reliable wetting and joint formation without voiding or dewetting.
SMBG5370C/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:
- ±2%
- 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)
SMBG5370C/TR13 FAQ
1.How can I place an order for SMBG5370C/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5370C/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 SMBG5370C/TR13 reliable?
The price and inventory of SMBG5370C/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5370C/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5370C/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5370C/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5370C/TR13?
SMBG5370C/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5370C/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 SMBG5370C/TR13?
For technical support, including SMBG5370C/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5370C/TR13 requirements.
6.How does Aetrix verify that SMBG5370C/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5370C/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 SMBG5370C/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5370C/TR13?
All SMBG5370C/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5370C/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 SMBG5370C/TR13 part is unused and in its original packaging.
Return procedure for SMBG5370C/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5370C/TR13 Tags
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MM5Z5V1ST1G
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