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Vishay General Semiconductor - Diodes Division SMBJ10A-E3/52
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- Part No.:
- SMBJ10A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ10A-E3/52.pdf
- Description:
- TVS DIODE 10VWM 17VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,421
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Product details
Overview
SMBJ10A-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed to protect sensitive electronics against ESD, lightning-induced surges, and inductive switching transients. It features a 10 V stand-off voltage (VWM), 11.1–12.3 V breakdown voltage (VBR) at 1 mA, 17.0 V maximum clamping voltage (VC) at 35.3 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform).
For engineers reviewing the SMBJ10A-E3/52 datasheet, SMBJ10A-E3/52 pinout, SMBJ10A-E3/52 application, or SMBJ10A-E3/52 equivalent, this device is selected for robust overvoltage protection on DC power rails and low-voltage signal lines in industrial sensors, automotive ECUs, and telecom interface circuits where fast response (<1 ns), low clamping ratio, and AEC-Q101-compliant variants are critical.
Technical Context
The SMBJ10A-E3/52 operates as a unidirectional avalanche diode with cathode-banded polarity, leveraging glass-passivated junction technology for stable breakdown and low incremental surge resistance. Its thermal design relies on 0.2" × 0.2" copper pads per terminal, delivering RθJA = 100 °C/W and enabling operation from −55 °C to +150 °C junction temperature.
It responds to transient threats with sub-nanosecond turn-on time and clamps 35.3 A (10/1000 µs) to ≤17.0 V - achieving a clamping ratio (VC/VWM) of 1.70 - while maintaining only 5.0 µA max reverse leakage at 10 V and meeting MSL Level 1 reflow compatibility (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC rail margin for 12 V systems. |
| VBR (min/max) | 11.1 V / 12.3 V at IT = 1 mA - Tight breakdown tolerance ensures predictable turn-on across production lots. |
| VC @ IPPM | 17.0 V at 35.3 A - Clamping voltage limits downstream IC stress during 600 W transient events. |
| PPPM | 600 W (10/1000 µs) - Sustains high-energy surges without failure under standard lightning test waveforms. |
| IPPM | 35.3 A - Peak surge current capacity validated per IEC 61000-4-5; derates linearly above 25 °C ambient. |
| RθJA | 100 °C/W - Thermal resistance dictates required PCB copper area for sustained 5.0 W power dissipation. |
| Junction Temp | −55 °C to +150 °C - Enables deployment in under-hood automotive and industrial environments. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, RoHS-compliant (E3 suffix), MSL Level 1 (260 °C peak reflow). Cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path (during surge) | Connected to protected line; conducts surge current toward ground when cathode is held at higher potential. |
| Cathode | Reverse-biased reference node | Banded end; tied to system ground or lower-potential rail; defines polarity and clamping threshold direction. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Withstands high-energy transients common in 12 V automotive and industrial power rails without degradation. |
| 17.0 V clamping voltage at 35.3 A | Provides 30% headroom below typical 24 V logic IC absolute maximum ratings, reducing risk of latch-up or damage. |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage (<5 µA) across temperature and lifetime stress conditions. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without popcorn cracking or delamination concerns. |
| Unidirectional polarity with cathode band | Enables precise placement on DC-biased lines (e.g., VCC, CAN_H) while blocking reverse conduction during normal operation. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protects microcontroller GPIO and LIN bus transceivers from load dump and alternator ripple in 12 V vehicle networks. IC Role / Device Role / Timing Role: Unidirectional TVS placed between LIN line and chassis ground, clamping transients within 1 ns to prevent bus lockup. Use Value: Maintains <17.0 V clamping at 35.3 A ensures LIN physical layer ICs (e.g., TJA1020) remain within safe operating area during ISO 7637-2 Pulse 5a events. |
Use Scenario: Shields 24 V digital input optocouplers in programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Mounted across input terminals (signal-to-ground), absorbing repetitive 1 kV/500 A transients from relay coil back-EMF. Use Value: 600 W rating and 100 °C/W thermal resistance allow reliable operation on standard FR-4 PCBs without heatsinking under 100 ms surge duty cycles. |
| Telecom Ethernet PHY Interface | Consumer Appliance Motor Driver Power Rail |
|
Use Scenario: Guards RJ45 magnetics secondary side and PHY IC pins against ESD (IEC 61000-4-2 ±8 kV contact) and surge coupling. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on MDI lines (TX+/RX+), referenced to local ground plane. Use Value: Sub-1 ns response and 5.0 µA leakage at 10 V preserve signal integrity and minimize standby current in always-on network interfaces. |
Use Scenario: Safeguards H-bridge gate drivers and MCU power supply inputs from brush-commutator motor commutation spikes. IC Role / Device Role / Timing Role: Placed across 12 V VDD rail and ground, shunting inductive kickback from motor windings. Use Value: 11.1–12.3 V VBR range aligns precisely with 12 V nominal rail, avoiding false triggering while ensuring clamping before 16 V regulator dropout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10CA-E3/52 | Bidirectional variant; symmetrical VBR = 11.1–12.3 V; no polarity marking; same package and PPPM. | Required for AC-coupled or floating signal lines (e.g., RS-485, USB D+/D−) where voltage polarity reverses. | Select SMBJ10CA-E3/52 only when bidirectional clamping is mandated by signal swing or topology. |
| SMAJ10A-E3/61 | Lower power rating: 400 W PPPM; SMA (DO-214AC) package; 19.0 V VC @ 22.5 A; smaller footprint (2.54 mm lead spacing). | Suitable for space-constrained consumer boards with lower surge immunity requirements (e.g., IEC 61000-4-5 Level 2). | Choose SMAJ10A-E3/61 only if board area is critical and 400 W surge capability meets system-level test plans. |
Compared with SMBJ10CA-E3/52 and SMAJ10A-E3/61, the SMBJ10A-E3/52 delivers superior energy handling (600 W vs. 400 W) and tighter clamping (17.0 V vs. 19.0 V) in a robust SMB package - making it optimal for automotive and industrial applications demanding AEC-Q101-grade reliability and high-duty-cycle surge resilience.
Availability
SMBJ10A-E3/52 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC input stages, telecom Ethernet PHY protection, and appliance motor driver power rails requiring stable component supply and long-term lifecycle support.
Supply support for SMBJ10A-E3/52 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability, precision, and high-volume manufacturability.
The SMBJ series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping performance and AEC-Q101 qualification are mandatory.
FAQ
What is the maximum clamping voltage of SMBJ10A-E3/52 under rated surge conditions?
The SMBJ10A-E3/52 has a maximum clamping voltage (VC) of 17.0 V when subjected to its rated peak pulse current of 35.3 A using the standardized 10/1000 µs waveform. This value is measured per IEC 61000-4-5 and ensures downstream circuitry remains within safe voltage limits during transient events. The SMBJ10A-E3/52 achieves this clamping performance while maintaining low incremental resistance and minimal thermal drift across its operating temperature range.
Is SMBJ10A-E3/52 RoHS-compliant and suitable for lead-free reflow assembly?
Yes, the SMBJ10A-E3/52 carries the "E3" suffix, indicating full RoHS compliance and qualification for lead-free reflow soldering per J-STD-020 MSL Level 1, with a maximum peak temperature of 260 °C. Its matte tin-plated leads meet JESD 22-B102 solderability standards and JESD 201 Class 2 whisker resistance requirements. The SMBJ10A-E3/52 is designed for automated placement and compatible with standard SMT processes used in high-volume manufacturing.
How does SMBJ10A-E3/52 differ from SMBJ10CA-E3/52?
The SMBJ10A-E3/52 is unidirectional with a cathode band marking and conducts only in reverse bias during overvoltage events, whereas the SMBJ10CA-E3/52 is bidirectional with symmetrical breakdown in both polarities and no polarity marking. Both share identical VBR, VC, and PPPM specs, but the SMBJ10A-E3/52 is intended for DC-biased lines like power rails or single-ended signals, while SMBJ10CA-E3/52 suits AC-coupled or differential interfaces such as RS-485 or CAN. Selecting SMBJ10A-E3/52 avoids unnecessary cost and complexity when polarity is fixed.
What is the reverse leakage current specification for SMBJ10A-E3/52 at its stand-off voltage?
At its 10 V stand-off voltage (VWM), the SMBJ10A-E3/52 exhibits a maximum reverse leakage current (ID) of 5.0 µA at 25 °C ambient temperature. This low leakage ensures minimal power loss in battery-powered or always-on systems and supports stable voltage regulation upstream of protected ICs. Leakage remains under 50 µA up to 125 °C, preserving efficiency in high-temperature deployments like engine control units.
Can SMBJ10A-E3/52 be used in automotive applications requiring AEC-Q101 qualification?
The base SMBJ10A-E3/52 is commercial-grade and not AEC-Q101 qualified; however, Vishay offers the functionally identical SMBJ10AHE3 variant (e.g., SMBJ10AHE3_B/H), which carries full AEC-Q101 qualification for automotive use. That variant shares the same electrical specs, SMB package, and thermal characteristics but undergoes additional stress testing per automotive reliability standards. For automotive designs, specify SMBJ10AHE3 or confirm qualification status directly with Vishay documentation - the SMBJ10A-E3/52 itself is not certified.
SMBJ10A-E3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 35.3A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ10A-E3/52 FAQ
1.How can I place an order for SMBJ10A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ10A-E3/52 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 SMBJ10A-E3/52 reliable?
The price and inventory of SMBJ10A-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ10A-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ10A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ10A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ10A-E3/52?
SMBJ10A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ10A-E3/52 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 SMBJ10A-E3/52?
For technical support, including SMBJ10A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ10A-E3/52 requirements.
6.How does Aetrix verify that SMBJ10A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ10A-E3/52 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 SMBJ10A-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ10A-E3/52?
All SMBJ10A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ10A-E3/52, 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 SMBJ10A-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ10A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ10A-E3/52 Tags
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