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Microchip Technology SMBG5370CE3/TR13
- Part No.:
- SMBG5370CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5370CE3/TR13.pdf
- Description:
- DIODE ZENER 56V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,871
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Product details
Overview
SMBG5370CE3/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 SMBG5370CE3/TR13 datasheet, SMBG5370CE3/TR13 pinout, SMBG5370CE3/TR13 application, or SMBG5370CE3/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 (20 mA IZM) 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 requires no dry pack per IPC/JEDEC J-STD-020B MSL Level 1 classification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 56 V ±2% at IZT = 20 mA - defines precise regulation point for feedback networks |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - sets maximum continuous thermal load without heatsink |
| Max Regulator Current (IZM) | 20 mA - determines usable current range before thermal derating begins |
| Dynamic Impedance (ZZK) | 35 Ω @ 1.0 mA - indicates voltage stability under small-signal ripple conditions |
| Surge Current (IZSM) | 280 A (8.3 ms half-sine) - defines transient overvoltage clamping capability |
| Thermal Resistance (RθJL) | 25 °C/W - enables accurate junction temperature estimation from lead temperature |
| Moisture Sensitivity | Level 1 - allows unlimited floor life; no baking required prior to reflow |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode indicated by band; operated with banded end positive relative to opposite terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-bias reference return path | Connected to ground or lower-potential node in shunt regulator configuration |
| Cathode | Zener voltage output node | Provides regulated 56 V output when reverse-biased; marked with band |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5370B equivalent | Identical electrical specs and test methods - simplifies legacy design migration |
| RoHS-compliant matte-tin plating | Meets IPC-J-STD-006B solderability requirements without Pb contamination risk |
| MSL Level 1 rating | Eliminates pre-reflow baking steps and reduces manufacturing overhead |
| Gull-wing lead form | Enables automated optical inspection (AOI) of solder joints post-reflow |
| High surge current capability | Withstands 280 A non-repetitive surges - suitable for transient suppression in industrial inputs |
Applications
| Switch-Mode Power Supply Feedback | Industrial Input Protection |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback converters via optocoupler feedback loop. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 56 V threshold for error amplifier biasing. Use Value: ±2% VZ tolerance ensures tight output regulation (<±1.5%) across line/load/temperature. | Use Scenario: Clamps induced surges on 48 V DC input rails in factory automation controllers. IC Role / Device Role / Timing Role: Transient voltage suppressor absorbing 280 A 8.3 ms surges without failure. Use Value: Low ZZK (35 Ω) minimizes clamping voltage overshoot during fast transients. |
| Programmable Logic Controller I/O Protection | Test Equipment Reference Calibration |
Use Scenario: Protects analog input channels from ESD and overvoltage events in PLC modules. IC Role / Device Role / Timing Role: Precision Zener clamp limiting input voltage to 56 V ±2% during fault conditions. Use Value: MSL Level 1 compatibility eliminates moisture-related field failures in humid environments. | Use Scenario: Serves as stable voltage reference in portable multimeter calibration circuits. IC Role / Device Role / Timing Role: Low-drift 56 V reference enabling traceable 3½-digit accuracy. Use Value: 25 °C/W RθJL allows accurate thermal modeling for long-term drift compensation. |
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 VZ (56 V), ±5% tolerance, Sn/Pb plating, axial T-18 package | Requires through-hole assembly; not suitable for high-density SMT designs | Select when legacy through-hole compatibility or Pb-based solder is required |
| SMBJ5370B | Same VZ (56 V), ±5% tolerance, DO-214AA J-bend package, identical electrical specs | Different footprint and thermal profile (RθJA differs); no gull-wing visual inspection benefit | Select when existing DO-214AA layout reuse is prioritized over AOI capability |
Compared with SMBG5370CE3/TR13, 1N5370B offers through-hole mounting but lacks RoHS compliance and MSL Level 1 handling, while SMBJ5370B retains SMT compatibility but sacrifices gull-wing solder joint visibility and uses J-bend leads incompatible with standard SMBG footprints.
Availability
SMBG5370CE3/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial input protection, programmable logic controller I/O protection, and test equipment reference calibration requiring stable component supply and full RoHS compliance.
Supply support for SMBG5370CE3/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 SMBG53xx series targets precision voltage regulation in harsh-environment power systems where stability, surge immunity, and process reliability are critical.
FAQ
What is the Zener voltage tolerance for SMBG5370CE3/TR13?
The SMBG5370CE3/TR13 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number. This means its measured VZ falls within 54.88 V to 57.12 V at IZT = 20 mA and TL = 25 °C. This tighter tolerance supports higher-accuracy regulation than ±5% (B suffix) or ±10% (A suffix) variants of the SMBG5370 series.
Does SMBG5370CE3/TR13 require baking before reflow soldering?
No, SMBG5370CE3/TR13 does not require baking before reflow. It carries an IPC/JEDEC J-STD-020B Moisture Sensitivity Level (MSL) rating of Level 1, meaning it has unlimited floor life and can be placed directly into reflow without preconditioning or dry-pack storage - reducing manufacturing complexity and cost.
What is the maximum surge current rating for SMBG5370CE3/TR13?
The SMBG5370CE3/TR13 is rated for a non-repetitive peak Zener surge current (IZSM) of 280 A, specified for an 8.3 ms half-sine waveform. This value reflects its ability to absorb transient energy in overvoltage protection applications without degradation, provided the surge interval allows sufficient thermal recovery.
How does the DO-215AA package of SMBG5370CE3/TR13 differ from DO-214AA?
The DO-215AA package of SMBG5370CE3/TR13 features gull-wing leads that extend outward and downward, enabling visual solder joint inspection and improved coplanarity control. In contrast, DO-214AA (used in SMBJ5370B) uses J-bend leads that curve under the body - making AOI more difficult and altering thermal resistance and PCB footprint requirements.
Is SMBG5370CE3/TR13 compatible with lead-free reflow profiles?
Yes, SMBG5370CE3/TR13 is fully compatible with lead-free reflow profiles. Its matte-tin (e3) plating meets RoHS requirements and is rated for solder temperatures up to 260 °C for 10 seconds. The device's thermal limits (TJ = –65 to +150 °C) and package construction ensure reliability under standard JEDEC J-STD-020-compliant reflow cycles.
SMBG5370CE3/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)
SMBG5370CE3/TR13 FAQ
1.How can I place an order for SMBG5370CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5370CE3/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 SMBG5370CE3/TR13 reliable?
The price and inventory of SMBG5370CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5370CE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5370CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5370CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5370CE3/TR13?
SMBG5370CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5370CE3/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 SMBG5370CE3/TR13?
For technical support, including SMBG5370CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5370CE3/TR13 requirements.
6.How does Aetrix verify that SMBG5370CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5370CE3/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 SMBG5370CE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5370CE3/TR13?
All SMBG5370CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5370CE3/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 SMBG5370CE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5370CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5370CE3/TR13 Tags
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BZT52C5V6T-7
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MM5Z5V1ST1G
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