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Microchip Technology SMBG5385BE3/TR13
- Part No.:
- SMBG5385BE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5385BE3/TR13.pdf
- Description:
- DIODE ZENER 170V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,905
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Product details
Overview
SMBG5385BE3/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal breakdown voltage of 170 V, ±5% tolerance (B suffix), RoHS-compliant matte-tin plating (E3), and DO-215AA gull-wing package. It regulates voltage across wide current and temperature ranges and withstands high surge stresses in power supply protection circuits.
For engineers reviewing the SMBG5385BE3/TR13 datasheet, SMBG5385BE3/TR13 pinout, SMBG5385BE3/TR13 application, or SMBG5385BE3/TR13 equivalent, key selection criteria include Zener voltage accuracy, maximum surge current rating, thermal resistance, and compatibility with automated SMT assembly on FR4 PCBs.
Technical Context
This device operates in reverse-biased breakdown mode to maintain stable reference voltage under varying load and temperature conditions. Its dynamic impedance is 380 Ω at 8.0 mA test current, and it exhibits minimal voltage drift versus current due to low knee impedance (31.6 Ω at 1.0 mA).
The SMBG5385BE3/TR13 is rated for 5.0 W power dissipation at lead temperature <25 °C, with thermal resistance junction-to-lead of 25 °C/W and junction-to-ambient of 90 °C/W on FR4 board. It meets MIL-STD-750 ESD immunity requirements and has IPC/JEDEC J-STD-020B Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 170 V ±5% at 8.0 mA - defines precise regulation point for overvoltage clamping |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - requires thermal management via PCB copper pour or heatsink |
| Max Surge Current (IZSM) | 1750 A (8.3 ms half-sine) - enables robust transient suppression in industrial power rails |
| Dynamic Impedance (ZZT) | 380 Ω at IZT = 8.0 mA - determines regulation stability under load variation |
| Reverse Leakage (IR) | 0.5 µA at VR = 137 V - ensures low standby power loss in high-impedance bias networks |
| Junction Temp Range | –65 °C to +150 °C - supports operation in automotive under-hood and industrial motor drive environments |
| Thermal Resistance RθJL | 25 °C/W - enables accurate junction temperature estimation from measured lead temperature |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode band marking. Cathode terminal is banded end; device operates with cathode positive relative to anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lower-potential rail; forms return path for Zener current |
| Cathode | Regulated output node | Banded end; connected to protected circuit node requiring voltage clamping at 170 V |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5385B Equivalent | Identical electrical characteristics and testing per JEDEC registration - simplifies legacy design migration |
| Gull-Wing Lead Form | Visible solder joints enable AOI inspection and reliable reflow yield on high-density PCBs |
| Moisture Sensitivity Level 1 | No dry pack required - reduces handling cost and eliminates bake-out prior to assembly |
| RoHS Compliant (e3) | Matte-tin plating meets EU RoHS Directive 2011/65/EU - supports global product compliance |
| High Surge Withstand | 1750 A non-repetitive surge rating - protects downstream components from lightning-induced transients |
Applications
| Industrial Power Supply Protection | Automotive Battery Monitoring |
|---|---|
Use Scenario: Clamps transient overvoltages on 120–160 V DC bus lines in PLC power modules during load dump events. IC Role / Device Role / Timing Role: Voltage-regulating protection diode placed across bus rail with series current-limiting resistor. Use Value: Maintains 170 V clamping threshold with ≤5% tolerance, preventing damage to 200 V-rated MOSFETs and capacitors. | Use Scenario: Provides overvoltage reference in battery management systems monitoring 12 V lead-acid stacks in hybrid vehicle auxiliary power units. IC Role / Device Role / Timing Role: Precision Zener reference for analog front-end comparators detecting >16.5 V fault conditions. Use Value: Stable 170 V regulation at –40 °C to +125 °C ensures consistent trip point across automotive temperature range. |
| Telecom Line Card Surge Suppression | Renewable Energy Inverter DC Link Clamp |
Use Scenario: Absorbs induced surges on 48 V telecom distribution lines exposed to nearby lightning strikes. IC Role / Device Role / Timing Role: Primary shunt protector in multi-stage TVS architecture upstream of active regulators. Use Value: 1750 A surge rating handles 8/20 µs transients without degradation, extending line card field life. | Use Scenario: Limits DC link voltage spikes during rapid IGBT turn-off in solar string inverters operating at 600 V nominal. IC Role / Device Role / Timing Role: Secondary clamp parallel to main DC bus capacitor bank. Use Value: Low dynamic impedance (380 Ω) ensures fast response to dV/dt events, reducing stress on 650 V IGBTs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5385BRLG | Same 170 V ±5%, but axial T-18 package - no SMT compatibility | Requires through-hole assembly; unsuitable for high-density boards | Select only when legacy through-hole manufacturing is mandated |
| SMBJ5385B | Identical electrical specs, but DO-214AA J-bend package - different footprint and thermal path | Higher RθJA (100 °C/W vs. 90 °C/W) limits power handling on same PCB layout | Choose if existing J-bend footprint is fixed and thermal margin allows |
Compared with SMBG5385BE3/TR13, 1N5385BRLG requires manual insertion and lacks gull-wing solder joint visibility, while SMBJ5385B demands PCB pad redesign and delivers lower thermal performance on identical board area.
Availability
SMBG5385BE3/TR13 is available at Aetrix Electronics and suitable for industrial power supply protection, automotive battery monitoring, and telecom line card surge suppression requiring stable component supply and full RoHS compliance.
Supply support for SMBG5385BE3/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 SMBG53xxB series targets surface-mount Zener regulation in space-constrained, high-surge environments where visible solder joints and moisture-insensitive packaging are critical.
FAQ
What is the Zener voltage tolerance for SMBG5385BE3/TR13?
The "B" suffix in SMBG5385BE3/TR13 indicates a ±5% Zener voltage tolerance. At the specified test current of 8.0 mA and lead temperature of 25 °C, the actual breakdown voltage falls between 161.5 V and 178.5 V. This tolerance is verified per JEDEC test methods and applies across the full operating temperature range of –65 °C to +150 °C.
Does SMBG5385BE3/TR13 require dry packing before SMT assembly?
No, SMBG5385BE3/TR13 does not require dry packing. Its moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1, meaning it can be stored indefinitely at ambient conditions without baking. This eliminates pre-reflow bake cycles and reduces manufacturing overhead compared to higher MSL-rated components.
What is the maximum surge current rating for SMBG5385BE3/TR13?
SMBG5385BE3/TR13 is rated for a non-repetitive peak surge current (IZSM) of 1750 A, defined as the maximum value of an 8.3 ms half-sine waveform. This rating is validated per industry-standard surge test protocols and enables use in primary-level transient protection for industrial and telecom infrastructure.
How does the DO-215AA package of SMBG5385BE3/TR13 differ from DO-214AA?
The DO-215AA gull-wing package of SMBG5385BE3/TR13 provides visible solder joints for automated optical inspection, whereas DO-214AA uses J-bend leads that hide solder fillets. DO-215AA also offers lower thermal resistance junction-to-lead (25 °C/W vs. ~30 °C/W for DO-214AA), improving power handling on thermally constrained PCBs.
Is SMBG5385BE3/TR13 compatible with lead-free reflow profiles?
Yes, SMBG5385BE3/TR13 supports standard lead-free reflow with a peak solder temperature of 260 °C for 10 seconds, per its qualification data. The RoHS-compliant matte-tin plating ensures wetting reliability and intermetallic formation control under IPC-A-610 Class 2 and Class 3 process conditions.
SMBG5385BE3/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):
- 170 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 380 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 122 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)
SMBG5385BE3/TR13 FAQ
1.How can I place an order for SMBG5385BE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5385BE3/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 SMBG5385BE3/TR13 reliable?
The price and inventory of SMBG5385BE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5385BE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5385BE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5385BE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5385BE3/TR13?
SMBG5385BE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5385BE3/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 SMBG5385BE3/TR13?
For technical support, including SMBG5385BE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5385BE3/TR13 requirements.
6.How does Aetrix verify that SMBG5385BE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5385BE3/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 SMBG5385BE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5385BE3/TR13?
All SMBG5385BE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5385BE3/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 SMBG5385BE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5385BE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5385BE3/TR13 Tags
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