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Vishay General Semiconductor - Diodes Division SMB10J20A-E3/52
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- Part No.:
- SMB10J20A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J20A-E3/52.pdf
- Description:
- TVS DIODE 20VWM 32.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,213
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Product details
Overview
SMB10J20A-E3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 20 V stand-off voltage (VWM), 22.2–24.5 V breakdown voltage (VBR) at 1 mA, 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 sensor interfaces, and power supply input stages.
For engineers reviewing the SMB10J20A-E3/52 datasheet, SMB10J20A-E3/52 pinout, SMB10J20A-E3/52 application, or SMB10J20A-E3/52 equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance (RθJA = 72 °C/W), RoHS-compliant E3 suffix, and mounting pad layout guidance per JEDEC DO-214AA standard - critical for board-level ESD/surge resilience validation.
Technical Context
This unidirectional TVS diode operates as a clamping device that remains high-impedance below 20 V (VWM) and rapidly transitions to low-impedance conduction above its 22.2–24.5 V breakdown threshold, limiting transient overvoltages to ≤32.4 V at 30.9 A. Its glass-passivated junction ensures stable leakage (<1 µA at VWM) and fast response time (<1 ns), enabling protection of downstream MOSFETs and ICs against ISO 7637-2 load-dump and IEC 61000-4-5 surges.
Rated for -55 °C to +150 °C junction temperature, it supports automotive under-hood environments and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. The SMB10J20A-E3/52 uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and is qualified to AEC-Q101 - confirming robustness for automotive-grade production use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20 V - maximum continuous reverse operating voltage before clamping initiates; defines safe DC rail margin for 24 V systems. |
| VBR min/max | 22.2 V / 24.5 V at 1 mA - guaranteed breakdown window ensuring predictable turn-on across temperature and unit variation. |
| VC @ IPPM | 32.4 V at 30.9 A (10/1000 µs) - clamped voltage seen by protected circuit during worst-case surge; determines minimum IC withstand rating. |
| PPPM | 1000 W - peak transient energy absorption capacity; enables compliance with ISO 16750-2 pulse 5a (load dump) in 12 V/24 V architectures. |
| ID @ VWM | ≤1.0 µA - ultra-low reverse leakage preserves battery life and avoids false triggering in always-on circuits. |
| TJ max | +150 °C - supports under-hood placement without derating in automotive engine control modules. |
| RθJA | 72 °C/W - thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads; informs heatsinking requirements for repeated surge duty. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking on one end. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); recommended pad layout per Vishay spec: 5.59 mm × 1.52 mm per terminal with 2.18 mm minimum solder mask opening.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lower-potential node; forms forward-biased path during positive transients on cathode side. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 24 V rail or sensor output); conducts avalanche current to anode when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensors - no additional qualification testing required. |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure per JESD22-A101. |
| MSL Level 1 (260 °C) | Enables single-pass lead-free reflow without moisture sensitivity concerns - eliminates bake-out step in SMT line. |
| RoHS-compliant E3 suffix | Meets EU Directive 2011/65/EU and China RoHS II; matte tin plating ensures solderability and whisker resistance (JESD201 Class 2). |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD, inductive kickback), improving protection margin for sensitive gate drivers. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs in engine control units (ECUs) against ISO 7637-2 pulse 5a (load dump) and pulse 1/2b (inductive switching). IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between battery rail and DC-DC converter input. Use Value: Limits transient voltage to ≤32.4 V, preventing damage to 36 V-rated input stages while sustaining 1000 W surge energy without degradation. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors in factory automation PLC I/O modules from cable-induced surges. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA) TVS mounted directly at connector entry point, upstream of op-amp signal conditioning. Use Value: Maintains signal integrity with <1 µA leakage at 20 V, clamps transients to 32.4 V within nanoseconds, and survives repeated 30 A surges per IEC 61000-4-5. |
| Telecom DC Power Input Protection | Consumer Device USB Power Line Protection |
Use Scenario: Safeguarding 24 V/48 V PoE-powered network switches against lightning-induced surges on outdoor Ethernet cables. IC Role / Device Role / Timing Role: Primary TVS on DC input stage, coordinated with secondary GDT or MOV for multi-stage protection. Use Value: Absorbs up to 1000 W peak power with 72 °C/W thermal resistance, enabling compact layout without forced air cooling. |
Use Scenario: Adding robust overvoltage protection to USB-C VBUS lines in portable medical monitors exposed to accidental 20 V adapter misconnection. IC Role / Device Role / Timing Role: Standoff-rated TVS (20 V) placed between USB-C receptacle and power management IC. Use Value: Blocks >20 V faults while allowing normal 5–20 V PD negotiation; clamps misapplied 24 V to 32.4 V before PMIC overvoltage lockout triggers. |
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-E3/52 | Same SMB package, identical VWM (20 V), VBR (22.2–24.5 V), and VC (32.4 V), but rated for 600 W PPPM (vs. 1000 W). | Lower surge rating limits suitability to non-automotive, lower-risk environments like consumer power adapters. | Select SMBJ20A-E3/52 only if system-level surge testing confirms ≤600 W requirement and AEC-Q101 is not mandated. |
| SMCJ20A-E3/52 | Same electrical specs but in larger SMC (DO-214AB) package; RθJA = 35 °C/W (vs. 72 °C/W), enabling higher average power handling. | Requires 30% more PCB area; preferred where repeated surge events or elevated ambient temperatures demand superior thermal performance. | Choose SMCJ20A-E3/52 when thermal derating analysis shows SMB10J20A-E3/52 exceeds TJ limit under worst-case duty cycle. |
Compared with SMBJ20A-E3/52 and SMCJ20A-E3/52, SMB10J20A-E3/52 uniquely delivers 1000 W surge capability in the compact SMB footprint with AEC-Q101 qualification - making it the optimal choice for space-constrained, automotive-grade 24 V rail protection where both high energy absorption and qualification compliance are mandatory.
Availability
SMB10J20A-E3/52 is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and telecom DC power input protection requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for SMB10J20A-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, TVS devices, and optoelectronics with emphasis on reliability, power efficiency, and automotive qualification.
The SMB10JxxA series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density, AEC-Q101-compliant transient suppression in harsh automotive and industrial environments.
FAQ
What is the clamping voltage of SMB10J20A-E3/52 at its rated peak pulse current?
The SMB10J20A-E3/52 has a maximum clamping voltage (VC) of 32.4 V when subjected to its rated peak pulse current (IPPM) of 30.9 A with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees the protected circuit will not experience voltages exceeding 32.4 V during standardized surge events - a critical parameter for validating compatibility with downstream 36 V-rated components. The SMB10J20A-E3/52 maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C).
Is SMB10J20A-E3/52 qualified for automotive applications?
Yes, SMB10J20A-E3/52 is AEC-Q101 qualified, as confirmed by Vishay's official documentation (Document Number: 88422, Revision: 09-Jan-2024). This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - validating its reliability for under-hood and chassis-mounted automotive electronics. The "HE3" variant (e.g., SMB10J20AHE3_B/H) explicitly denotes AEC-Q101 compliance, while the E3 suffix in SMB10J20A-E3/52 indicates RoHS-compliant commercial grade; however, the base SMB10J20A device itself is AEC-Q101 qualified per family specification.
What is the maximum reverse leakage current for SMB10J20A-E3/52 at its stand-off voltage?
The SMB10J20A-E3/52 exhibits a maximum reverse leakage current (ID) of 1.0 µA at its stand-off voltage (VWM) of 20 V, measured at 25 °C. This ultra-low leakage ensures minimal power loss in always-on systems such as automotive body controllers or IoT sensor nodes, and prevents false triggering in high-impedance signal paths. Leakage remains within specification across the full operating temperature range, supporting reliable operation in battery-powered and thermally demanding applications using SMB10J20A-E3/52.
How does the thermal resistance of SMB10J20A-E3/52 affect its surge handling capability?
The SMB10J20A-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W when mounted on 0.2" × 0.2" copper pads per JEDEC standards. This value directly impacts its ability to dissipate heat during repetitive surge events: for example, absorbing ten consecutive 1000 W pulses with 1 s intervals requires sufficient thermal mass or airflow to prevent junction temperature from exceeding 150 °C. Designers must use this RθJA figure - not just peak power rating - to model cumulative heating in real-world duty cycles involving SMB10J20A-E3/52.
What packaging and reel options are available for SMB10J20A-E3/52?
SMB10J20A-E3/52 is supplied in 7" diameter plastic tape and reel format with a base quantity of 750 units (package code "52"), as specified in Vishay's ordering information. The "E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads. Alternate configurations include 13" reels (code "5B", 3200 units) and AEC-Q101-qualified variants (e.g., SMB10J20AHE3_B/I). All versions maintain identical electrical and mechanical specifications - only packaging, compliance level, and reel size differ for SMB10J20A-E3/52.
SMB10J20A-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):
- 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-E3/52 FAQ
1.How can I place an order for SMB10J20A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J20A-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 SMB10J20A-E3/52 reliable?
The price and inventory of SMB10J20A-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 SMB10J20A-E3/52 is usually 5 days.
3.What payment methods are accepted for SMB10J20A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J20A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J20A-E3/52?
SMB10J20A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J20A-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 SMB10J20A-E3/52?
For technical support, including SMB10J20A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J20A-E3/52 requirements.
6.How does Aetrix verify that SMB10J20A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMB10J20A-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 SMB10J20A-E3/52 meets industry standards.
7.What is the process for return or replacement of SMB10J20A-E3/52?
All SMB10J20A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J20A-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 SMB10J20A-E3/52 part is unused and in its original packaging.
Return procedure for SMB10J20A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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