My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMB10J20-E3/52
- Part No.:
- SMB10J20-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J20-E3/52.pdf
- Description:
- TVS DIODE 20VWM 35.8VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,481
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMB10J20-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 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. It is AEC-Q101 qualified and used to protect automotive ECUs, industrial sensor interfaces, and DC power rails against ESD and load dump transients.
For engineers reviewing the SMB10J20-E3/52 datasheet, SMB10J20-E3/52 pinout, SMB10J20-E3/52 application, or SMB10J20-E3/52 equivalent, key selection criteria include clamping performance under 30.9 A surge, thermal resistance (RθJA = 72 °C/W), RoHS-compliant matte tin terminations, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamping overvoltage protection device, leveraging an avalanche breakdown mechanism to divert transient energy away from downstream ICs. Its unidirectional polarity enables integration into DC-biased circuits where reverse conduction must be blocked until clamping threshold is exceeded.
It complies with ANSI/IEEE C62.35 surge standards and is rated for operation from –55 °C to +150 °C junction temperature. The glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and long-term reliability under repetitive surge stress, while MSL Level 1 moisture sensitivity supports standard reflow without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20 V - Maximum continuous reverse operating voltage before significant leakage begins; defines safe DC bias margin. |
| VBR (min/max) | 22.2 V / 24.5 V - Breakdown occurs within this range at 1 mA test current; ensures consistent clamping onset across production lot. |
| VC @ IPPM | 32.4 V - Clamped voltage seen by protected circuit during 30.9 A 10/1000 µs surge; determines maximum stress on downstream components. |
| PPPM | 1000 W - Peak surge power handling capability with standardized 10/1000 µs waveform; validates robustness against IEC 61000-4-5 Level 4 surges. |
| RθJA | 72 °C/W - Junction-to-ambient thermal resistance on 5.0 mm × 5.0 mm copper pads; informs derating requirements above 25 °C ambient. |
| Leakage ID | <1.0 µA at 20 V - Ultra-low reverse leakage preserves power efficiency in always-on systems like automotive body controllers. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22-A114. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, low-profile plastic case with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path) in unidirectional configuration; conducts only during forward surge events. |
| Cathode (marked) | Reverse-biased clamping terminal | Connected to protected line (e.g., 24 V rail); avalanche breakdown initiates here when voltage exceeds VBR, shunting surge to ground. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile DO-214AA package | Enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment without height clearance issues. |
| Glass-passivated junction | Ensures stable electrical parameters over time and temperature, minimizing parameter drift during thermal cycling in automotive under-hood environments. |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control, ADAS sensors, and infotainment power supplies requiring zero field failure tolerance. |
| MSL Level 1 rating | Allows use in standard reflow profiles up to 260 °C peak without pre-baking, reducing manufacturing complexity and cost. |
| RoHS-compliant E3 suffix | Meets EU RoHS Directive 2011/65/EU and JESD201 Class 1A whisker resistance, ensuring long-term solder joint integrity in vibration-prone systems. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs of engine control units (ECUs) against ISO 7637-2 load dump transients up to 60 V/100 ms. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed between power rail and chassis ground, activated within nanoseconds of overvoltage onset. Use Value: Limits rail voltage to ≤32.4 V during 30.9 A surge, preventing damage to downstream LDOs, microcontrollers, and CAN transceivers. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Bidirectional-capable protection element (though SMB10J20-E3/52 is unidirectional, used with series resistor for bidirectional behavior) suppressing ESD and inductive kickback on low-bandwidth analog paths. Use Value: Maintains signal integrity with <1.0 µA leakage at 20 V, avoiding offset errors in precision 16-bit ADC front-ends. |
| DC-DC Converter Input Stage | Telecom Power Interface |
Use Scenario: Input-side surge suppression for 24 V input buck converters powering base station RF modules. IC Role / Device Role / Timing Role: First-line transient absorber upstream of input filter capacitors and MOSFET switches, absorbing energy before it reaches switching stage. Use Value: Withstands 1000 W peak pulse power, enabling compliance with IEC 61000-4-5 surge immunity requirements without derating. | Use Scenario: Overvoltage protection on -48 V telecom power distribution boards exposed to lightning-induced surges on outdoor feeder lines. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to system ground, placed at board edge to intercept incoming transients before they propagate to DC/DC modules. Use Value: Clamps to 32.4 V at 30.9 A, limiting stress on -48 V system components rated for ±60 V absolute maximum ratings. |
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 DO-214AA 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 capacity limits use to less severe environments (e.g., consumer IoT vs. automotive under-hood). | Select SMBJ20A-E3/52 only if system-level surge testing confirms 600 W is sufficient and cost optimization is prioritized. |
| SMCJ20A-E3/52 | DO-214AB (SMC) package, same electrical specs but higher PPPM (1500 W) and lower RθJA (35 °C/W), requiring larger PCB footprint. | Better thermal performance allows sustained surge duty cycles; larger size may conflict with space-constrained designs. | Choose SMCJ20A-E3/52 when thermal management or >1000 W surge margin is required, accepting 5.3 mm × 5.3 mm footprint increase. |
Compared with SMBJ20A-E3/52 and SMCJ20A-E3/52, SMB10J20-E3/52 delivers optimal balance of 1000 W surge capability, compact DO-214AA footprint, and AEC-Q101 qualification-making it preferred for space-limited automotive and industrial power rail protection where both reliability and density matter.
Availability
SMB10J20-E3/52 is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface protection, and telecom power board development requiring stable component supply and full traceability.
Supply support for SMB10J20-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 SMB10Jxx series belongs to Vishay's high-power-density TRANSZORB® TVS family, engineered specifically for demanding automotive and industrial applications where fast-response, high-energy clamping and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of SMB10J20-E3/52 at its rated peak pulse current?
The SMB10J20-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 using the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for protected circuits. The SMB10J20-E3/52 maintains this clamping performance across its qualified operating temperature range.
Is SMB10J20-E3/52 suitable for automotive applications?
Yes, SMB10J20-E3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its construction features glass-passivated junctions, MSL Level 1 reflow compatibility, and guaranteed operation from –55 °C to +150 °C. The SMB10J20-E3/52 meets stringent automotive reliability requirements for ESD, temperature cycling, and surge endurance.
What does the "E3/52" suffix indicate in SMB10J20-E3/52?
The "E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin terminations meeting JESD201 Class 1A whisker resistance. The "/52" indicates packaging in 7-inch diameter plastic tape and reel, with a base quantity of 750 units per reel. This format supports automated SMT assembly and is documented in Vishay's ordering information table for SMB10J20-E3/52.
How does SMB10J20-E3/52 differ from bi-directional variants like SMB8J20CA?
SMB10J20-E3/52 is unidirectional, meaning it blocks reverse current until breakdown and conducts only in one direction-ideal for DC-biased lines. In contrast, SMB8J20CA is bi-directional with symmetrical clamping in both polarities, suited for AC or floating signal lines. The SMB10J20-E3/52 offers higher PPPM (1000 W vs. 800 W) and is AEC-Q101 qualified, whereas SMB8J20CA shares the same VWM/VBR but differs in surge rating and qualification status.
What PCB layout guidance applies to SMB10J20-E3/52 for optimal thermal and surge performance?
For optimal performance, mount SMB10J20-E3/52 on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Vishay's thermal characterization. Use short, wide traces to minimize inductance, and avoid thermal relief on pads to maximize heat dissipation. The SMB10J20-E3/52 achieves RθJA = 72 °C/W under these conditions-critical for maintaining junction temperature below 150 °C during repeated surges.
SMB10J20-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):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 35.8V
- Current - Peak Pulse (10/1000µs):
- 27.9A
- 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)
SMB10J20-E3/52 FAQ
1.How can I place an order for SMB10J20-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J20-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 SMB10J20-E3/52 reliable?
The price and inventory of SMB10J20-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 SMB10J20-E3/52 is usually 5 days.
3.What payment methods are accepted for SMB10J20-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J20-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J20-E3/52?
SMB10J20-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J20-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 SMB10J20-E3/52?
For technical support, including SMB10J20-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J20-E3/52 requirements.
6.How does Aetrix verify that SMB10J20-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMB10J20-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 SMB10J20-E3/52 meets industry standards.
7.What is the process for return or replacement of SMB10J20-E3/52?
All SMB10J20-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J20-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 SMB10J20-E3/52 part is unused and in its original packaging.
Return procedure for SMB10J20-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J20-E3/52 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
