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Vishay General Semiconductor - Diodes Division SMB10J12AHE3/5B
- Part No.:
- SMB10J12AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J12AHE3/5B.pdf
- Description:
- TVS DIODE 12VWM 19.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,174
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Product details
Overview
SMB10J12AHE3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 12 V stand-off voltage (VWM), 13.3–14.7 V breakdown voltage (VBR at 1 mA), 19.9 V clamping voltage (VC) at 50.3 A peak pulse current, and 1000 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the SMB10J12AHE3/5B datasheet, SMB10J12AHE3/5B pinout, SMB10J12AHE3/5B application, or SMB10J12AHE3/5B equivalent, key selection criteria include clamping performance under automotive load-dump transients, AEC-Q101 qualification for automotive use, thermal resistance (RθJA = 72 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional shunt protector, leveraging a glass-passivated silicon junction to achieve fast response (<1 ps) and low incremental surge resistance. Its clamping behavior is defined by ANSI/IEEE C62.35-compliant 10/1000 µs surge testing, with guaranteed VC ≤ 19.9 V at IPPM = 50.3 A when mounted per recommended pad layout.
The device is rated for -55 °C to +150 °C operating junction temperature, meets MSL Level 1 per J-STD-020 (260 °C reflow peak), and is qualified to AEC-Q101 for automotive applications - confirmed by HE3 suffix and Vishay's revision-controlled documentation (Doc. #88422, Rev. 09-Jan-2024).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 12 V - maximum continuous reverse working voltage before significant leakage; defines safe operating margin below breakdown |
| VBR (min/max) | 13.3 V / 14.7 V at IT = 1 mA - tight breakdown tolerance ensures predictable turn-on during transients |
| VC @ IPPM | 19.9 V at 50.3 A - clamping voltage limits downstream IC stress during 1000 W surge events |
| PPPM | 1000 W (10/1000 µs) - peak power handling capacity for automotive ISO 7637-2 pulse 5a/b compliance |
| IFSM | 100 A (8.3 ms half-sine) - surge current rating for non-repetitive load-switching events |
| RθJA | 72 °C/W - thermal resistance determines junction temperature rise under sustained power dissipation |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by color band at one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential rail in unidirectional configuration |
| Cathode | Reverse-biased protection terminal | Connected to protected line (e.g., 12 V supply); conducts during overvoltage to clamp to VC |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR and low leakage (<5 µA at VWM) across temperature and lifetime |
| AEC-Q101 qualification | Validated for automotive under-hood environments including thermal shock and humidity exposure |
| MSL Level 1 rating | Enables single-reflow assembly without moisture sensitivity concerns (peak 260 °C) |
| Low profile SMB package | 0.220" × 0.130" footprint supports high-density PCB layouts and automated pick-and-place |
| 1000 W peak pulse power | Withstands ISO 7637-2 Pulse 5a (load dump) up to 12 V systems without derating |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load-dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between power rail and chassis ground to clamp surges within 19.9 V. Use Value: Prevents damage to MCU, CAN transceivers, and voltage regulators by limiting peak rail voltage during 1000 W transients. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to microcontrollers in factory automation. IC Role / Device Role / Timing Role: Low-capacitance TVS on differential or single-ended signal lines to suppress ESD and switching noise. Use Value: Maintains signal integrity with <5 µA leakage at 12 V while clamping fast transients to protect ADC inputs. |
| Consumer Power Adapter Input | Telecom DC Power Distribution |
Use Scenario: Input-stage surge suppression in wall adapters powering USB-C PD or PoE devices. IC Role / Device Role / Timing Role: Primary-side TVS on rectified AC/DC output to absorb line-induced spikes before DC-DC conversion. Use Value: Enables robust 12 V output regulation by limiting input surges to ≤19.9 V, reducing downstream capacitor stress. | Use Scenario: Overvoltage protection on 48 V DC distribution buses feeding base station radios and remote PHY modules. IC Role / Device Role / Timing Role: Parallel-connected TVS on bus feeders to divert lightning-induced surges away from sensitive RF front-ends. Use Value: Provides 1000 W surge headroom with 72 °C/W thermal resistance, enabling reliable operation without forced cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12A-E3/52 | Same SMB package, identical VWM/VBR/VC, but commercial-grade (non-AEC-Q101) and RoHS-compliant only | Lacks automotive qualification; suitable for industrial/commercial designs without AEC requirements | Select when AEC-Q101 is not mandated and cost optimization is prioritized |
| 1.5SMC12A | Higher package thermal resistance (RθJA ≈ 100 °C/W), same VWM/VC, but SMC (DO-214AB) package is larger (0.285" × 0.235") | Requires more PCB area; less suitable for space-constrained automotive modules | Choose only if existing SMC footprint must be retained and thermal derating is acceptable |
Compared with SMBJ12A-E3/52 and 1.5SMC12A, SMB10J12AHE3/5B delivers AEC-Q101 assurance in the smallest standard TVS footprint, enabling direct integration into automotive control units without layout redesign or thermal compromise.
Availability
SMB10J12AHE3/5B is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power distribution systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMB10J12AHE3/5B 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade validation.
The SMB10J series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-power-density transient suppression in harsh environments where AEC-Q101 compliance, low clamping voltage, and SMT manufacturability are critical.
FAQ
What is the clamping voltage of SMB10J12AHE3/5B at its rated peak pulse current?
The SMB10J12AHE3/5B has a maximum clamping voltage (VC) of 19.9 V at 50.3 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured with the device mounted on 0.2" × 0.2" copper pads per Vishay Doc. #88422. The clamping performance ensures protected circuits remain below critical voltage thresholds during surge events.
Is SMB10J12AHE3/5B qualified for automotive applications?
Yes, SMB10J12AHE3/5B is AEC-Q101 qualified, as confirmed by the "HE3" suffix and Vishay's official documentation (Document Number 88422, Revision 09-Jan-2024). It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD, making it suitable for under-hood and body-control module applications.
What does the "5B" in SMB10J12AHE3/5B indicate?
The "5B" denotes the preferred package code specifying 13-inch diameter plastic tape and reel packaging with a base quantity of 3200 units. This format supports high-volume automated SMT assembly and is distinct from "52" (7-inch reel, 750 units) and "H"/"I" variants used in different reel configurations.
How does SMB10J12AHE3/5B differ from SMBJ12A-E3/52?
SMB10J12AHE3/5B and SMBJ12A-E3/52 share identical electrical parameters (VWM, VBR, VC, PPPM) and SMB package, but SMB10J12AHE3/5B carries AEC-Q101 qualification and uses the HE3 suffix for automotive-grade traceability, whereas SMBJ12A-E3/52 is commercial-grade only.
What is the maximum operating junction temperature for SMB10J12AHE3/5B?
The SMB10J12AHE3/5B has a maximum operating junction temperature (TJ) of +150 °C, as specified in Vishay Document #88422. This rating enables reliable operation in under-hood automotive environments and high-ambient industrial settings when mounted per recommended thermal pad layout.
SMB10J12AHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 12V
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 19.9V
- Current - Peak Pulse (10/1000µs):
- 50.3A
- 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)
SMB10J12AHE3/5B FAQ
1.How can I place an order for SMB10J12AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J12AHE3/5B 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 SMB10J12AHE3/5B reliable?
The price and inventory of SMB10J12AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J12AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMB10J12AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J12AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J12AHE3/5B?
SMB10J12AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J12AHE3/5B 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 SMB10J12AHE3/5B?
For technical support, including SMB10J12AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J12AHE3/5B requirements.
6.How does Aetrix verify that SMB10J12AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMB10J12AHE3/5B 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 SMB10J12AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMB10J12AHE3/5B?
All SMB10J12AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J12AHE3/5B, 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 SMB10J12AHE3/5B part is unused and in its original packaging.
Return procedure for SMB10J12AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J12AHE3/5B Tags
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