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Taiwan Semiconductor Corporation SMB10J14CAH
- Part No.:
- SMB10J14CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J14CAH.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,994
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Product details
Overview
SMB10J14CAH from Taiwan Semiconductor is a bidirectional 1000W transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, with 14V stand-off voltage (VWM), 15.6–17.2V breakdown voltage (VBR), and 23.2V clamping voltage (VC) at 43.1A peak pulse current - designed for automotive ESD and load-dump protection in lighting control and power management circuits.
For engineers reviewing the SMB10J14CAH datasheet, SMB10J14CAH pinout, SMB10J14CAH application, or SMB10J14CAH equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, 175°C junction rating, and DO-214AA mechanical compatibility with automated SMT placement.
Technical Context
This bidirectional TVS diode uses a glass-passivated junction to achieve sub-1ps response time and robust clamping under fast transients. Its symmetrical avalanche structure enables equal reverse/forward surge handling without polarity dependency, supporting both line-to-line and line-to-ground protection schemes.
Thermal performance is defined by RθJL = 20°C/W and RθJA = 100°C/W, enabling reliable operation up to 175°C junction temperature. It meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1 requirements for high-reliability reflow assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - maximum continuous reverse working voltage before clamping initiates |
| VBR (min/max) | 15.6 V / 17.2 V - breakdown occurs within this range at 1 mA test current |
| VC @ IPPM | 23.2 V - clamps transients to ≤23.2 V at 43.1 A peak pulse current |
| PPK | 1000 W - peak pulse power handling per 1 ms 10/1000 µs waveform |
| TJ max | +175 °C - maximum junction temperature for sustained operation and AEC-Q101 compliance |
| Configuration | Bidirectional - symmetric clamping for AC or dual-polarity DC lines |
| Package | DO-214AA (SMB) - surface-mount outline with 0.110 g mass and UL 94V-0 molding compound |
Pinout & Package
DO-214AA (SMB) package: cathode band marking denotes polarity; bidirectional configuration means both terminals are functionally identical - no anode/cathode distinction required in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (marked band) | Transient conduction path | Band identifies terminal orientation for unidirectional variants; irrelevant for SMB10J14CAH due to bidirectional symmetry |
| Terminal 1 / Terminal 2 | Clamping node pair | Interchangeable connection points - either terminal may connect to protected line or ground reference |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood applications including temperature cycling, humidity bias, and mechanical shock |
| ISO 7637-2 compliant | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) waveforms |
| Glass passivated junction | Enables stable VBR tolerance and long-term reliability under repeated surge stress |
| Sub-1 ps response time | Clamps ESD and EFT events before sensitive downstream ICs experience overvoltage damage |
| Moisture Sensitivity Level 1 | Zero bake requirement prior to reflow - compatible with standard SMT assembly lines |
Applications
| Automotive Lighting Control | Industrial Motor Drive I/O Protection |
|---|---|
Use Scenario: Protecting LED driver ICs and microcontrollers from load-dump transients during headlight switching in 12 V vehicle systems. IC Role / Device Role: Bidirectional clamping element placed across power rail and ground near connector interface. Use Value: Limits voltage excursion to ≤23.2 V during 1000 W pulses, preventing latch-up or gate oxide rupture in 3.3 V/5 V logic. | Use Scenario: Safeguarding PLC digital input modules from inductive kickback when controlling solenoids or relays. IC Role / Device Role: Line-to-line TVS on 24 V DC input channels to absorb reverse-energy transients. Use Value: Maintains signal integrity by clamping spikes within 1 ps, avoiding false triggering of optocouplers or level shifters. |
| Automotive Body Control Module (BCM) | Smart Building Sensor Node Power Input |
Use Scenario: Shielding CAN transceiver power rails and wake-up lines from battery disconnection surges. IC Role / Device Role: Secondary protection stage after primary fuse, located adjacent to power entry point. Use Value: Survives repetitive ISO 7637-2 Pulse 2b events up to 175°C ambient, ensuring BCM uptime in hot engine bay environments. | Use Scenario: Securing 12 V auxiliary power input of Zigbee/Z-Wave sensor hubs exposed to building wiring noise. IC Role / Device Role: First-line defense against electrical fast transients (IEC 61000-4-4) entering via shared HVAC conduit. Use Value: Delivers 1000 W peak dissipation without derating below 125°C ambient, eliminating need for heatsinking in compact enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ14CA | Same DO-214AC (SMA) package; 14 V VWM, 23.2 V VC @ 43.1 A; lower PPK (400 W) | Lower power rating limits use to non-load-dump scenarios; unsuitable for ISO 7637-2 Pulse 1 | Select only for cost-sensitive industrial I/O where peak transients < 400 W |
| ON Semiconductor 1.5KE14CA | Through-hole DO-201 package; same VWM/VC specs; higher thermal mass but incompatible with SMT | Requires PCB redesign and manual assembly; not AEC-Q101 qualified | Consider only for legacy through-hole designs or prototyping without SMT capability |
Compared with SMAJ14CA and 1.5KE14CA, SMB10J14CAH uniquely combines AEC-Q101 qualification, DO-214AA SMT compatibility, 1000 W peak power, and full ISO 7637-2 compliance - making it the only drop-in solution for production automotive electronics requiring zero layout change and certified reliability.
Availability
SMB10J14CAH is available at Aetrix Electronics and suitable for automotive lighting control, industrial motor drive I/O protection, and body control module (BCM) designs requiring stable component supply, AEC-Q101 traceability, and ISO 7637-2 validated surge immunity.
Supply support for SMB10J14CAH 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, MOSFETs, and power management devices.
The SMB10JxxCAH series is part of TSC's AEC-Q101-qualified transient suppression portfolio, engineered specifically for automotive-grade line protection where high peak power, fast response, and environmental ruggedness are mandatory.
FAQ
What does the "CAH" suffix indicate in SMB10J14CAH?
The "CAH" suffix denotes a bidirectional TVS diode in DO-214AA (SMB) package with AEC-Q101 qualification and halogen-free construction. Unlike unidirectional "AH" variants, SMB10J14CAH provides symmetrical clamping for AC-coupled or dual-rail applications. This designation is confirmed in TSC's ordering information and electrical specifications table for SMB10J14CAH.
Is SMB10J14CAH suitable for ISO 7637-2 Pulse 1 protection?
Yes, SMB10J14CAH is explicitly rated to meet ISO 7637-2 Pulse 1 (inductive load dump), Pulse 2a/2b, and Pulse 3a/3b. Its 1000 W peak pulse power rating and 23.2 V clamping voltage at 43.1 A ensure compliance with the 35 V/100 ms Pulse 1 waveform. This is verified in TSC's "FEATURES" and "ELECTRICAL SPECIFICATIONS" sections for SMB10J14CAH.
What is the maximum junction temperature for SMB10J14CAH?
The maximum junction temperature for SMB10J14CAH is +175°C, as specified in the Absolute Maximum Ratings table. This rating supports operation in high-ambient environments such as automotive engine compartments and enables AEC-Q101 qualification. Thermal derating begins above 25°C ambient per Figure 2 in the official SMB10J14CAH datasheet.
Does SMB10J14CAH require special PCB layout considerations?
No special layout is needed beyond standard DO-214AA footprint adherence. The bidirectional nature of SMB10J14CAH eliminates polarity concerns, and its low-inductance package minimizes parasitic effects. TSC recommends using short, wide traces to the protected node and ground plane, as outlined in the "SUGGESTED PAD LAYOUT" section of the SMB10J14CAH documentation.
How does SMB10J14CAH differ from SMB10J14AH?
SMB10J14AH is the unidirectional version with cathode band marking and forward voltage specification (VF = 3.5 V @ 50 A); SMB10J14CAH is bidirectional, has no polarity marking, and supports symmetrical clamping in both directions. Their VWM, VBR, and VC values are identical, but SMB10J14CAH is required for AC or floating-line protection where polarity reversal may occur.
SMB10J14CAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMB10J
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 23.2V
- Current - Peak Pulse (10/1000µs):
- 43.1A
- Power - Peak Pulse:
- 1000W (1kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J14CAH FAQ
1.How can I place an order for SMB10J14CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J14CAH 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 SMB10J14CAH reliable?
The price and inventory of SMB10J14CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J14CAH is usually 5 days.
3.What payment methods are accepted for SMB10J14CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J14CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J14CAH?
SMB10J14CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J14CAH 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 SMB10J14CAH?
For technical support, including SMB10J14CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J14CAH requirements.
6.How does Aetrix verify that SMB10J14CAH is sourced from the original manufacturer or authorized distributors?
All SMB10J14CAH 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 SMB10J14CAH meets industry standards.
7.What is the process for return or replacement of SMB10J14CAH?
All SMB10J14CAH units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J14CAH, 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 SMB10J14CAH part is unused and in its original packaging.
Return procedure for SMB10J14CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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