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Vishay General Semiconductor - Diodes Division SMB10J20A-E3/5B
- Part No.:
- SMB10J20A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J20A-E3/5B.pdf
- Description:
- TVS DIODE 20VWM 32.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,685
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Product details
Overview
SMB10J20A-E3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on power and signal lines. It features a 20 V stand-off voltage (VWM), 22.2–24.5 V breakdown voltage (VBR), 32.4 V clamping voltage (VC) at 30.9 A peak pulse current (IPPM), and 1000 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive ECUs, industrial I/O modules, and DC power rail protection.
For engineers reviewing the SMB10J20A-E3/5B datasheet, SMB10J20A-E3/5B pinout, SMB10J20A-E3/5B application, or SMB10J20A-E3/5B equivalent, key selection criteria include clamping performance under 30.9 A surge, AEC-Q101 qualification for automotive use, RoHS-compliant E3 suffix, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction to achieve fast response time (<1 ns), low incremental surge resistance, and stable clamping behavior across temperature. Its design targets transient suppression per ISO 7637-2 and IEC 61000-4-5 standards, with thermal resistance RθJA = 72 °C/W enabling reliable operation up to TJ = 150 °C.
The device operates within -55 °C to +150 °C junction temperature range and meets MSL level 1 per J-STD-020 (peak reflow 260 °C). Polarity is marked by cathode band; terminals are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20 V - maximum continuous reverse operating voltage before conduction begins; defines safe working margin for 24 V nominal systems. |
| VBR min/max | 22.2 V / 24.5 V at IT = 1 mA - guaranteed breakdown threshold ensures predictable turn-on during transients. |
| VC @ IPPM | 32.4 V at IPPM = 30.9 A (10/1000 μs) - clamping voltage limits downstream IC stress during worst-case surge events. |
| PPPM | 1000 W - peak pulse power handling capacity determines survivability against lightning-induced or inductive-switching surges. |
| ID @ VWM | 1.0 μA - ultra-low leakage preserves system efficiency and battery life in always-on circuits. |
| TJ max | +150 °C - enables deployment in under-hood automotive environments and high-temperature industrial enclosures. |
| AEC-Q101 | Qualified - certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with molded UL 94 V-0 compound; cathode indicated by color band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to protected line (e.g., 24 V rail); must be routed with low-inductance trace to minimize overshoot. |
| Cathode | Current exit terminal during reverse-biased clamping | Connected to ground reference plane; requires solid thermal pad connection to dissipate 1000 W surge energy. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring zero-defect reliability. |
| MSL Level 1 rating | Supports lead-free reflow without preconditioning; compatible with standard SMT assembly lines peaking at 260 °C. |
| Low-profile SMB package | Enables compact layout in space-constrained applications such as sensor nodes and motor driver PCBs. |
| Matte tin-plated leads | Guarantees solderability and whisker resistance per JESD 201 Class 2, critical for high-reliability production. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
|
Use Scenario: Protecting microcontroller GPIOs and CAN transceiver power rails from load-dump and jump-start transients in BCMs. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between 12/24 V supply and local LDO input. Use Value: Limits voltage to ≤32.4 V during 30.9 A surge, preventing latch-up or permanent damage to downstream regulators and logic ICs. |
Use Scenario: Safeguarding 24 V digital input channels against field-wiring induced surges in programmable logic controllers. IC Role / Device Role / Timing Role: Primary overvoltage protection stage ahead of optocoupler or Schmitt-trigger input circuitry. Use Value: Clamps transients within nanoseconds while maintaining <1.0 μA leakage at 20 V, preserving input threshold accuracy. |
| DC Power Supply Output Rail | Automotive Camera Module Power Line |
|
Use Scenario: Secondary surge protection on regulated 5 V or 3.3 V outputs of industrial DC-DC converters exposed to back-EMF from connected loads. IC Role / Device Role / Timing Role: Fast-acting shunt device that activates only during overvoltage events, remaining transparent during normal operation. Use Value: Delivers 1000 W pulse power handling without derating at TA = 25 °C, supporting robust design margins in harsh environments. |
Use Scenario: Protecting image sensor and serializer IC power pins in rear-view or surround-view camera modules mounted near vehicle chassis. IC Role / Device Role / Timing Role: Automotive-qualified unidirectional TVS placed directly at connector entry point on FPC or rigid-flex PCB. Use Value: AEC-Q101 qualification and +150 °C TJ max ensure uninterrupted operation during extended parking in desert climates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20A-E3/5B | Same VWM (20 V), identical SMB package, but lower PPPM (600 W) and VC = 32.4 V at IPPM = 18.3 A. | Lower surge rating suits consumer-grade or non-automotive industrial applications where full 1000 W immunity is not required. | Select SMBJ20A-E3/5B when cost optimization is prioritized and surge threat level is moderate (e.g., office equipment). |
| SMB10J20CA-E3/5B | Bidirectional variant with same VWM (20 V), but reduced PPPM (800 W) and higher VC (32.4 V at IPPM = 24.7 A). | Required only for AC-coupled or bidirectional signal lines (e.g., RS-485, CAN FD differential pairs) where polarity reversal occurs. | Choose SMB10J20CA-E3/5B exclusively for symmetric transient threats; SMB10J20A-E3/5B remains optimal for DC power rail protection. |
Compared with SMBJ20A-E3/5B and SMB10J20CA-E3/5B, SMB10J20A-E3/5B delivers highest single-polarity surge immunity (1000 W), maintains lowest leakage (1.0 μA), and is uniquely AEC-Q101 qualified - making it the preferred choice for automotive and mission-critical 24 V DC systems.
Availability
SMB10J20A-E3/5B is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, and DC power supply designs requiring stable component supply, RoHS compliance, and AEC-Q101 assurance.
Supply support for SMB10J20A-E3/5B 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 SMB10JxxA series belongs to Vishay's high-power TRANSZORB® TVS family, engineered specifically for robust transient suppression in automotive, industrial, and telecom infrastructure where 1000 W surge capability and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of SMB10J20A-E3/5B at its rated peak pulse current?
The SMB10J20A-E3/5B has a maximum clamping voltage (VC) of 32.4 V when subjected to its rated peak pulse current (IPPM) of 30.9 A using the 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees predictable overvoltage limiting during surge events, ensuring downstream ICs remain within safe operating voltage windows.
Is SMB10J20A-E3/5B suitable for automotive applications?
Yes, SMB10J20A-E3/5B is AEC-Q101 qualified and explicitly listed in Vishay's automotive ordering codes (HE3/HM3 suffix variants). Its construction - glass-passivated junction, MSL Level 1 rating, and operation up to +150 °C - meets requirements for engine bay, body control, and ADAS subsystems. The E3 suffix confirms RoHS compliance for automotive supply chains.
What does the "-E3/5B" suffix indicate in SMB10J20A-E3/5B?
The "-E3/5B" suffix denotes RoHS-compliant commercial-grade packaging: "E3" specifies matte tin-plated leads meeting JESD 201 Class 2 whisker resistance, while "5B" indicates 13-inch diameter plastic tape-and-reel packaging with 3200 units per reel - optimized for high-volume SMT placement and traceable lot control.
How does SMB10J20A-E3/5B differ from SMBJ20A-E3/5B?
SMB10J20A-E3/5B offers 1000 W peak pulse power (PPPM) versus 600 W for SMBJ20A-E3/5B, achieved via enhanced chip construction and thermal design. Both share the same VWM (20 V) and SMB package, but SMB10J20A-E3/5B sustains higher surge current (30.9 A vs. 18.3 A) and is AEC-Q101 qualified - distinguishing it for automotive and heavy-industrial use.
What is the recommended PCB pad layout for SMB10J20A-E3/5B?
Vishay specifies mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated thermal and surge performance. The SMB (DO-214AA) outline requires minimum pad widths of 0.060" (1.52 mm) and length of 0.086" (2.18 mm), with thermal vias strongly recommended under the cathode pad to enhance heat dissipation during 1000 W transient events.
SMB10J20A-E3/5B 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):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 32.4V
- Current - Peak Pulse (10/1000µs):
- 30.9A
- 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)
SMB10J20A-E3/5B FAQ
1.How can I place an order for SMB10J20A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J20A-E3/5B 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 SMB10J20A-E3/5B reliable?
The price and inventory of SMB10J20A-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J20A-E3/5B is usually 5 days.
3.What payment methods are accepted for SMB10J20A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J20A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J20A-E3/5B?
SMB10J20A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J20A-E3/5B 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 SMB10J20A-E3/5B?
For technical support, including SMB10J20A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J20A-E3/5B requirements.
6.How does Aetrix verify that SMB10J20A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMB10J20A-E3/5B 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 SMB10J20A-E3/5B meets industry standards.
7.What is the process for return or replacement of SMB10J20A-E3/5B?
All SMB10J20A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J20A-E3/5B, 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 SMB10J20A-E3/5B part is unused and in its original packaging.
Return procedure for SMB10J20A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J20A-E3/5B Tags
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