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Microchip Technology SMBG5385CE3/TR13
- Part No.:
- SMBG5385CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5385CE3/TR13.pdf
- Description:
- DIODE ZENER 170V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,913
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Product details
Overview
SMBG5385CE3/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 170 V, ±2% tolerance (C suffix), RoHS-compliant matte-tin plating (e3), and DO-215AA gull-wing package. It regulates voltage across wide current and temperature ranges, supports surge currents up to 1750 A (8.3 ms half-sine), and operates from –65 °C to +150 °C junction temperature.
For engineers reviewing the SMBG5385CE3/TR13 datasheet, SMBG5385CE3/TR13 pinout, SMBG5385CE3/TR13 application, or SMBG5385CE3/TR13 equivalent, this page delivers verified electrical specs, thermal derating behavior, JEDEC 1N5385B compatibility, and real-world design implications for overvoltage protection and precision reference circuits.
Technical Context
This device functions as a two-terminal voltage regulator in reverse-biased breakdown mode, with Zener voltage specified at 170 V ±2% measured at IZT = 8.0 mA and TL = 25 °C. Its dynamic impedance is 380 Ω at IZT, and knee impedance is 450 Ω at 1.0 mA - indicating stable regulation onset near rated current.
Thermal performance is defined by RθJL = 25 °C/W (junction-to-lead) and RθJA = 90 °C/W (junction-to-ambient on FR4 with recommended footprint). Power dissipation is 5.0 W at TL < 25 °C, derating linearly above that per Figure 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 170 V ±2% at IZT = 8.0 mA - ensures tight voltage reference stability for high-voltage clamping and feedback networks. |
| Max Power Dissipation (PD) | 5.0 W at lead temperature < 25 °C - requires thermal management via PCB copper area or heatsinking for sustained operation. |
| Surge Current (IZSM) | 1750 A (8.3 ms half-sine) - withstands transient overvoltages such as lightning-induced surges or inductive kickback. |
| Dynamic Impedance (ZZT) | 380 Ω at IZT = 8.0 mA - low enough for stable regulation under moderate load variation; higher than lower-voltage Zeners due to voltage scaling. |
| Junction Temperature Range | –65 °C to +150 °C - suitable for industrial, automotive under-hood, and outdoor power electronics environments. |
| Reverse Leakage (IR) | < 0.5 µA at VR = 137 V - minimal standby current in high-impedance sensing or biasing applications. |
| Package | DO-215AA gull-wing - enables visual solder-joint inspection and high-density mounting without J-bend shadowing issues. |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode band marking; terminals are anode and cathode - no internal circuitry or control logic. Cathode is banded end; device operates with cathode positive relative to anode in reverse-bias regulation mode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference/Return Node | Connected to system ground or lowest potential node; carries full Zener current during regulation. |
| Cathode | Regulated Output Node | Banded terminal; held at stable 170 V when reverse-biased above breakdown; connects to protected rail or feedback divider. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5385B Equivalent | Identical electrical characteristics and test methods - allows drop-in replacement in legacy designs qualified to MIL-STD-750. |
| Moisture Sensitivity Level 1 | No dry pack required before reflow - simplifies handling and eliminates bake-out steps in SMT production. |
| RoHS Compliant Matte-Tin Plating (e3) | Lead-free finish meeting IPC-J-STD-609A - compatible with Pb-free reflow profiles and avoids tin whisker risk. |
| Gull-Wing Lead Geometry | Visible solder joints and self-aligning during reflow - improves first-pass yield and enables AOI inspection without X-ray. |
| Non-ESD-Sensitive | Qualified per MIL-STD-750 Method 1020 - no special ESD handling required during assembly or field service. |
Applications
| Industrial Power Supply Protection | Telecom Line Card Surge Suppression |
|---|---|
Use Scenario: Clamps transient overvoltages on 120–240 V AC-derived DC rails in programmable logic controllers and motor drives. IC Role / Device Role / Timing Role: Two-terminal passive voltage clamp placed across bulk capacitor or post-regulator output. Use Value: Absorbs 1750 A surge energy (8.3 ms) without failure, maintaining downstream IC integrity per IEC 61000-4-5 Level 4. |
Use Scenario: Protects line interface ICs (e.g., SLICs) from lightning-induced surges on POTS or xDSL lines. IC Role / Device Role / Timing Role: Primary overvoltage protector in series with gas discharge tube (GDT) or TVS array. Use Value: 170 V standoff enables coordination with GDT strike voltage; ±2% tolerance ensures predictable clamping threshold. |
| High-Voltage Feedback Reference | Test Equipment Calibration Reference |
Use Scenario: Provides stable 170 V reference for isolated DC-DC converter feedback dividers in medical imaging power supplies. IC Role / Device Role / Timing Role: Precision shunt reference in optocoupler-coupled feedback loop. Use Value: ±2% tolerance and low dynamic impedance (380 Ω) minimize output voltage drift across load and temperature. |
Use Scenario: Serves as traceable voltage reference in portable HV calibration sources for multimeters and insulation testers. IC Role / Device Role / Timing Role: Stable Zener element in compensated reference string with temperature compensation resistors. Use Value: Moisture Level 1 rating and –65 °C to +150 °C operation support field-deployable instrument reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5385B | Axial-leaded T-18 package; identical VZ, IZT, ZZT, and IZSM; non-RoHS (Sn/Pb plating). | Requires through-hole assembly; not suitable for high-density SMT layouts or automated optical inspection. | Select when legacy through-hole manufacturing or MIL-STD-750 qualification without RoHS compliance is required. |
| SMBJ5385B | DO-214AA J-bend package; same electrical specs but different thermal resistance (RθJA ≈ 100 °C/W vs. 90 °C/W) and moisture level (Level 1 still valid). | Less visible solder joints; slightly reduced thermal performance on same PCB footprint; may require layout revision. | Select when existing DO-214AA footprint reuse is prioritized over gull-wing inspectability and marginally better thermal conduction. |
Compared with SMBG5385CE3/TR13, 1N5385B offers identical regulation but mandates through-hole assembly, while SMBJ5385B retains SMT compatibility at a minor thermal penalty and reduced process visibility - making SMBG5385CE3/TR13 optimal for new high-reliability SMT designs requiring RoHS and inspection access.
Availability
SMBG5385CE3/TR13 is available at Aetrix Electronics and suitable for industrial power supply protection, telecom line card surge suppression, and high-voltage feedback reference applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for SMBG5385CE3/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, RF, and discrete components for aerospace, defense, and industrial markets.
The SMBG53xxB series was designed to deliver JEDEC-qualified, high-power Zener regulation in compact gull-wing packages for space-constrained, high-surge industrial systems - bridging legacy 1N53xx performance with modern SMT manufacturability.
FAQ
What is the Zener voltage tolerance of SMBG5385CE3/TR13?
The "C" suffix in SMBG5385CE3/TR13 denotes ±2% Zener voltage tolerance at IZT = 8.0 mA and TL = 25 °C. This tight tolerance enables precise clamping and reference applications where voltage accuracy directly impacts system safety or measurement fidelity.
Does SMBG5385CE3/TR13 require dry packing before reflow soldering?
No. SMBG5385CE3/TR13 has IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it can be stored and processed without dry packing or baking - reducing manufacturing overhead and eliminating moisture-related popcorning risks during reflow.
What is the maximum surge current rating for SMBG5385CE3/TR13?
SMBG5385CE3/TR13 is rated for 1750 A peak non-repetitive surge current (IZSM) using an 8.3 ms half-sine waveform. This value is confirmed in the Electrical Characteristics table on page 3 of the T4-LDS-0246-1 datasheet and reflects its suitability for IEC 61000-4-5 Level 4 surge immunity.
How does the DO-215AA package of SMBG5385CE3/TR13 differ from DO-214AA?
The DO-215AA gull-wing package of SMBG5385CE3/TR13 provides visible solder joints and self-alignment during reflow, unlike the J-bend leads of DO-214AA. Thermal resistance is also improved: RθJA = 90 °C/W (DO-215AA) vs. ~100 °C/W (DO-214AA) on FR4, enhancing power handling in compact layouts.
Is SMBG5385CE3/TR13 compatible with lead-free reflow profiles?
Yes. The "e3" suffix confirms RoHS-compliant annealed matte-tin plating, qualified for standard Pb-free reflow profiles up to 260 °C for 10 seconds. This matches JEDEC J-STD-020 requirements and eliminates compatibility concerns in modern SMT lines.
SMBG5385CE3/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:
- ±2%
- 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)
SMBG5385CE3/TR13 FAQ
1.How can I place an order for SMBG5385CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5385CE3/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 SMBG5385CE3/TR13 reliable?
The price and inventory of SMBG5385CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5385CE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5385CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5385CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5385CE3/TR13?
SMBG5385CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5385CE3/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 SMBG5385CE3/TR13?
For technical support, including SMBG5385CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5385CE3/TR13 requirements.
6.How does Aetrix verify that SMBG5385CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5385CE3/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 SMBG5385CE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5385CE3/TR13?
All SMBG5385CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5385CE3/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 SMBG5385CE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5385CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5385CE3/TR13 Tags
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