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Vishay General Semiconductor - Diodes Division SMB10J20AHE3_A/H
- Part No.:
- SMB10J20AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J20AHE3_A/H.pdf
- Description:
- TVS DIODE 20VWM 32.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,424
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Product details
Overview
SMB10J20AHE3_A/H 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 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 power supply inputs and industrial sensor interfaces.
For engineers reviewing the SMB10J20AHE3_A/H datasheet, SMB10J20AHE3_A/H pinout, SMB10J20AHE3_A/H application, or SMB10J20AHE3_A/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 72 °C/W), junction temperature range (−55 to +150 °C), and automotive-grade packaging details for robust ESD/surge design validation.
Technical Context
This TVS diode operates as a clamping-type overvoltage protector using an avalanche breakdown mechanism. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling fast response (<1 ns) to transients induced by inductive switching or load dump events.
The device is rated for unidirectional polarity with cathode band marking, supports 100 A non-repetitive forward surge current (IFSM), and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its thermal resistance (RθJL = 20 °C/W) and 72 °C/W junction-to-ambient rating define PCB pad layout requirements for sustained 1000 W pulse handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20 V - maximum continuous reverse operating voltage before clamping begins; sets safe DC rail margin for 24 V systems. |
| VBR min/max | 22.2 V / 24.5 V at 1 mA - defines guaranteed avalanche initiation window; ensures consistent turn-on across temperature and unit variation. |
| VC @ IPPM | 32.4 V at 30.9 A - clamping voltage under 10/1000 µs surge; determines protected circuit's maximum transient exposure level. |
| PPPM | 1000 W - peak pulse power rating; quantifies single-event energy absorption capability without failure. |
| ID @ VWM | 1.0 µA - reverse leakage at stand-off voltage; critical for low-power sensor biasing and battery-backed circuits. |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments and sealed industrial enclosures. |
| AEC-Q101 | Qualified - certified for automotive electronic modules requiring reliability validation per stress test standard. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line (e.g., GND or return path); conducts during forward surge events. |
| Cathode | Avalanche clamping terminal | Connected to higher-potential side (e.g., VCC or signal line); initiates clamping when reverse voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR drift < ±5% over lifetime and eliminates moisture-induced parameter shift in humid environments. |
| AEC-Q101 qualification | Validates reliability for automotive powertrain, body control, and ADAS modules subject to extended temperature cycling and vibration stress. |
| Low RθJL (20 °C/W) | Enables efficient heat transfer to PCB copper pads, supporting repeated 1000 W surges without thermal runaway when mounted per recommended 0.2" × 0.2" pad layout. |
| MSL Level 1 rating | Permits unlimited floor life and standard reflow profile (peak 260 °C), eliminating bake-out requirements for high-volume SMT assembly. |
| UL 94 V-0 molding compound | Provides flame-retardant encapsulation required for safety-critical industrial and transportation equipment certifications. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
|
Use Scenario: Protecting 24 V battery-fed ECUs against load dump transients up to 120 V and 100 ms duration. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between input rail and chassis ground. Use Value: Limits voltage seen by downstream DC-DC converters to ≤32.4 V during 30.9 A surge, preventing MOSFET gate oxide rupture and regulator latch-up. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: Standby-mode surge absorber connected across signal and return conductors. Use Value: Sub-1 ns response clamps 8 kV contact ESD to <35 V within 100 ns, preserving ADC reference integrity and isolator input thresholds. |
| Telecom DC Power Feeds | Consumer USB Power Delivery Port |
|
Use Scenario: Safeguarding PoE-powered switches and base stations from lightning-induced surges on 48 V DC distribution lines. IC Role / Device Role / Timing Role: Primary front-end clamp on midspan injector outputs. Use Value: Absorbs 1000 W pulses without degradation, maintaining VWM stability across −40 to +85 °C ambient for outdoor deployment. |
Use Scenario: Secondary-level overvoltage guard on USB-C VBUS lines exposed to adapter fault conditions or hot-plug transients. IC Role / Device Role / Timing Role: Fast-acting shunt protector between VBUS and GND, upstream of load switch. Use Value: Clamps 20 V nominal rail to 32.4 V during 10/1000 µs surges, avoiding damage to USB PD controller and port controller ICs. |
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 VWM (20 V), same SMB package, but commercial-grade (non-AEC-Q101); RθJA = 72 °C/W identical. | Lacks automotive qualification; suitable for industrial/commercial power supplies where AEC compliance is not mandated. | Select when cost sensitivity outweighs automotive reliability requirements and full lifecycle traceability is not needed. |
| 1.5SMC20A | Higher package thermal resistance (RθJA = 110 °C/W), same VWM and PPPM; larger SMC (DO-214AB) footprint. | Requires larger PCB area and exhibits slower thermal recovery; less effective in high-density automotive modules. | Choose only if existing layout uses SMC pads and no redesign is permitted - otherwise avoid due to inferior thermal performance. |
Compared with SMB10J20AHE3_A/H, SMBJ20A-E3/52 offers identical electrical specs but omits AEC-Q101 validation and traceability, while 1.5SMC20A trades compact SMB size for reduced thermal efficiency and incompatible mounting - making SMB10J20AHE3_A/H optimal for space-constrained, automotive-qualified designs.
Availability
SMB10J20AHE3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom DC power feeds requiring stable component supply with full AEC-Q101 documentation and RoHS-compliant traceability.
Supply support for SMB10J20AHE3_A/H 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 high-reliability diodes, MOSFETs, and passive components for demanding industrial and automotive applications.
SMB10J20AHE3_A/H belongs to the TRANSZORB® high-power TVS family, engineered specifically for robust transient immunity in automotive power distribution and harsh-environment industrial control systems.
FAQ
What is the clamping voltage of SMB10J20AHE3_A/H at its rated peak pulse current?
The SMB10J20AHE3_A/H has a maximum clamping voltage (VC) of 32.4 V when subjected to its specified peak pulse current (IPPM) of 30.9 A under a 10/1000 µs waveform. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuitry during surge events. The SMB10J20AHE3_A/H maintains this clamping performance across its full operating temperature range, supporting reliable protection in automotive under-hood applications.
Is SMB10J20AHE3_A/H qualified for automotive use?
Yes, SMB10J20AHE3_A/H is explicitly AEC-Q101 qualified, as confirmed in Vishay document 88422 (Revision 09-Jan-2024). The "HE3" suffix denotes RoHS-compliant and AEC-Q101 qualified construction, validated for temperature cycling, mechanical shock, and humidity testing per automotive reliability standards. This makes SMB10J20AHE3_A/H suitable for engine control units, body electronics, and ADAS modules where long-term field reliability is mandatory.
What is the thermal resistance of SMB10J20AHE3_A/H, and how does it affect PCB layout?
SMB10J20AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W. These values require mounting on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to sustain 1000 W pulse dissipation without exceeding TJ max = +150 °C. Deviating from this pad layout reduces surge capability and risks parametric shift or catastrophic failure during repetitive transients.
How does SMB10J20AHE3_A/H differ from bidirectional variants like SMB8J20CA?
SMB10J20AHE3_A/H is unidirectional with cathode-band polarity, optimized for DC rail protection where reverse conduction must be blocked. In contrast, SMB8J20CA is bidirectional, offering symmetric clamping for AC-coupled or floating signal lines. SMB10J20AHE3_A/H delivers higher PPPM (1000 W vs. 800 W) and lower VC (32.4 V vs. 32.4 V at lower IPPM), reflecting its dedicated DC power application focus - unlike SMB8J20CA, which trades peak power for dual-polarity coverage.
What packaging and reel options are available for SMB10J20AHE3_A/H?
SMB10J20AHE3_A/H ships in 7" diameter plastic tape and reel with 750 units per reel (package code "H"). The "_A/H" suffix confirms this configuration. It uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and passes JESD 201 Class 2 whisker testing. No tube or bulk options are listed for this AEC-Q101 variant - only tape-and-reel delivery is supported for traceability and automated placement integrity.
SMB10J20AHE3_A/H 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:
- 32.4V
- Current - Peak Pulse (10/1000µs):
- 30.9A
- Power - Peak Pulse:
- 1000W (1kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J20AHE3_A/H FAQ
1.How can I place an order for SMB10J20AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J20AHE3_A/H 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 SMB10J20AHE3_A/H reliable?
The price and inventory of SMB10J20AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J20AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMB10J20AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J20AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J20AHE3_A/H?
SMB10J20AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J20AHE3_A/H 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 SMB10J20AHE3_A/H?
For technical support, including SMB10J20AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J20AHE3_A/H requirements.
6.How does Aetrix verify that SMB10J20AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMB10J20AHE3_A/H 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 SMB10J20AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMB10J20AHE3_A/H?
All SMB10J20AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J20AHE3_A/H, 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 SMB10J20AHE3_A/H part is unused and in its original packaging.
Return procedure for SMB10J20AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J20AHE3_A/H Tags
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