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Vishay General Semiconductor - Diodes Division SMB10J30-E3/52
- Part No.:
- SMB10J30-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J30-E3/52.pdf
- Description:
- TVS DIODE 30VWM 53.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,695
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Product details
Overview
SMB10J30-E3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy surge protection on power and signal lines. It features a 30 V stand-off voltage (VWM), 33.3–36.8 V breakdown voltage (VBR), 48.4 V clamping voltage (VC) at 20.7 A peak pulse current (IPPM), and 1000 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive power supply rails and industrial sensor interfaces.
For engineers reviewing the SMB10J30-E3/52 datasheet, SMB10J30-E3/52 pinout, SMB10J30-E3/52 application, or SMB10J30-E3/52 equivalent, key selection criteria include clamping performance under 10/1000 µs transients, AEC-Q101 qualification for automotive use, thermal resistance (RθJA = 72 °C/W), and RoHS-compliant matte tin plating per J-STD-002.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped crowbar device during ESD or lightning-induced surges, leveraging a glass-passivated silicon junction to achieve sub-nanosecond response time and low incremental surge resistance. Its design targets fast transient suppression while maintaining low leakage (<1.0 µA at 30 V) and stable clamping across -55 °C to +150 °C junction temperature range.
The SMB10J30-E3/52 is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), supports automated SMT placement, and meets MSL level 1 per J-STD-020 with 260 °C reflow peak. Its DO-214AA package provides mechanical robustness and UL 94 V-0 flammability compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 33.3 V / 36.8 V - breakdown threshold at 1.0 mA test current, defining turn-on consistency |
| VC @ IPPM | 48.4 V at 20.7 A - clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 1000 W - peak pulse power handling capability, enabling protection against IEC 61000-4-5 Level 4 surges |
| IFSM | 100 A - surge current rating for 8.3 ms half-sine waveform, supporting inrush and load-dump events |
| TJ max. | 150 °C - maximum junction temperature, allowing operation in under-hood automotive environments |
| RθJA | 72 °C/W - thermal resistance from junction to ambient on standard 5.0 mm × 5.0 mm copper pads |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, low-profile case with cathode band marking on the anode side (cathode is banded end). Matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 1A whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | High-side connection to protected line | Reverse-biased during normal operation; conducts when transient exceeds VBR to clamp voltage |
| Anode (non-banded end) | Low-side connection to ground or return path | Provides reference node for clamping action; must be routed with low-inductance path to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| Glass passivated junction | Ensures stable VBR over lifetime and improved humidity resistance vs. epoxy-passivated alternatives |
| MSL Level 1 (260 °C peak) | Enables single-reflow assembly without moisture sensitivity concerns |
| UL 94 V-0 molding compound | Meets flame-retardancy requirements for industrial and transportation equipment enclosures |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage exposure to protected ICs compared to higher-ratio TVS devices |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp transients above 30 V. Use Value: Limits peak voltage to 48.4 V during 1000 W surges, preventing damage to 36 V-rated DC-DC controllers and microcontrollers. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: TVS connected across signal and ground lines to absorb ESD and switching noise. Use Value: Sub-ns response and 1.0 µA leakage at 30 V preserve signal integrity and ADC accuracy in 4–20 mA loops. |
| Telecom Line Interface Protection | Consumer Power Adapter Input Stage |
|
Use Scenario: Shielding Ethernet PHY power pins from induced surges in outdoor telecom cabinets. IC Role / Device Role / Timing Role: Standoff-rated TVS on 3.3 V or 5 V bias rails upstream of LDOs and PHY ICs. Use Value: 48.4 V clamping prevents latch-up in 5 V-tolerant PHYs during 10/1000 µs lightning surges per IEC 61000-4-5. |
Use Scenario: Front-end surge suppression in universal AC-DC adapters for smartphones and tablets. IC Role / Device Role / Timing Role: Primary-side TVS on rectified DC bus to absorb MOSFET switching spikes and external surges. Use Value: 1000 W PPPM rating handles repetitive 10/1000 µs transients without degradation, supporting 5-year field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A-E3/52 | Same DO-214AA package, identical VWM (30 V), VBR (33.3–36.8 V), and VC (48.4 V), but rated for 600 W PPPM (vs. 1000 W) | Lower power handling limits use to <1 kV ESD or low-energy surges; unsuitable for ISO 7637-2 load dump | Select SMB10J30-E3/52 where full 1000 W surge immunity is required; SMBJ30A-E3/52 suffices for board-level ESD only. |
| 1.5KE30A | Through-hole DO-201 package, same electrical specs but higher RθJA (~100 °C/W) and no AEC-Q101 qualification | Not suitable for automotive SMT production or high-density layouts; requires PCB real estate and wave soldering | Choose SMB10J30-E3/52 for space-constrained, automotive-grade, reflow-compatible designs; 1.5KE30A fits legacy through-hole systems. |
Compared with SMBJ30A-E3/52 and 1.5KE30A, SMB10J30-E3/52 uniquely combines 1000 W surge capacity, AEC-Q101 qualification, and DO-214AA SMT compatibility - making it the only option among the three validated for under-hood automotive power rail protection with zero layout compromise.
Availability
SMB10J30-E3/52 is available at Aetrix Electronics and suitable for automotive power distribution modules, industrial PLC I/O protection, and telecom infrastructure power supplies requiring stable component supply, long-term lifecycle support, and traceable RoHS-compliant sourcing.
Supply support for SMB10J30-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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power density, and automotive qualification.
The SMB10J series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom applications demanding AEC-Q101 validation and 1000 W surge capability.
FAQ
What is the clamping voltage of SMB10J30-E3/52 at its rated peak pulse current?
The SMB10J30-E3/52 has a maximum clamping voltage (VC) of 48.4 V at 20.7 A peak pulse current (IPPM) under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings. The SMB10J30-E3/52 maintains this clamping performance across its full operating temperature range.
Is SMB10J30-E3/52 qualified for automotive applications?
Yes, SMB10J30-E3/52 is AEC-Q101 qualified, as confirmed by Vishay's documentation (Document Number 88422, Revision 12-Nov-12). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD - validating its suitability for under-hood and chassis-mounted automotive electronics. The "E3" suffix further indicates RoHS compliance and JESD 201 Class 1A whisker resistance, aligning with automotive manufacturing requirements. SMB10J30-E3/52 is explicitly recommended for load dump and ISO 7637-2 protection.
What is the thermal resistance of SMB10J30-E3/52, and how does it affect PCB layout?
The SMB10J30-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Vishay's DO-214AA outline drawing. To maintain safe junction temperatures during repeated surges, designers must allocate sufficient copper area and avoid thermal bottlenecks - undersized pads or thin traces will increase effective RθJA and risk thermal runaway. The SMB10J30-E3/52's RθJL of 20 °C/W also emphasizes the need for short, wide traces to the ground plane.
How does SMB10J30-E3/52 differ from bi-directional TVS diodes like SMB8J30CA?
SMB10J30-E3/52 is unidirectional and optimized for DC power line protection where polarity is fixed, offering 1000 W peak pulse power (PPPM) and 100 A IFSM. In contrast, SMB8J30CA is bi-directional with symmetrical clamping for AC or floating signal lines, but lower PPPM (800 W) and no IFSM rating. SMB10J30-E3/52's unidirectional architecture enables tighter VBR tolerance and lower leakage (<1.0 µA at 30 V), whereas SMB8J30CA exhibits matched positive/negative breakdown but higher capacitance. Use SMB10J30-E3/52 for 12 V/24 V rails; SMB8J30CA suits RS-485 or audio lines.
What packaging and reel options are available for SMB10J30-E3/52?
SMB10J30-E3/52 is supplied in 7" diameter plastic tape and reel format with a base quantity of 750 units per reel (package code "52"). It is not offered in bulk, tube, or tray formats. The tape conforms to EIA-481 standards, and the reel labeling includes Vishay part number, date code, and RoHS compliance marking. Traceability is maintained via reel label barcodes linked to manufacturing lot data - essential for automotive PPAP submissions and industrial quality audits involving SMB10J30-E3/52.
SMB10J30-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 53.5V
- Current - Peak Pulse (10/1000µs):
- 18.7A
- Power - Peak Pulse:
- 1000W (1kW)
- 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 (SMB)
SMB10J30-E3/52 FAQ
1.How can I place an order for SMB10J30-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J30-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 SMB10J30-E3/52 reliable?
The price and inventory of SMB10J30-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 SMB10J30-E3/52 is usually 5 days.
3.What payment methods are accepted for SMB10J30-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J30-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J30-E3/52?
SMB10J30-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J30-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 SMB10J30-E3/52?
For technical support, including SMB10J30-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J30-E3/52 requirements.
6.How does Aetrix verify that SMB10J30-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMB10J30-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 SMB10J30-E3/52 meets industry standards.
7.What is the process for return or replacement of SMB10J30-E3/52?
All SMB10J30-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J30-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 SMB10J30-E3/52 part is unused and in its original packaging.
Return procedure for SMB10J30-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J30-E3/52 Tags
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