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Taiwan Semiconductor Corporation SMB10J14AH
- Part No.:
- SMB10J14AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J14AH.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,324
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Product details
Overview
SMB10J14AH from Taiwan Semiconductor is a unidirectional 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. It is AEC-Q101 qualified and designed for automotive ESD and load-dump protection in power supply rails.
For engineers reviewing the SMB10J14AH datasheet, SMB10J14AH pinout, SMB10J14AH application, or SMB10J14AH equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, junction temperature rating up to +175°C, moisture sensitivity level 1 compliance, and unidirectional polarity marking for correct PCB orientation.
Technical Context
The SMB10J14AH uses a glass-passivated silicon junction optimized for fast transient suppression, achieving sub-1ps response time. Its unidirectional configuration provides reverse-biased clamping only, with forward voltage of 3.5V at 50A, enabling use in DC power line protection where polarity is fixed.
Thermally, it features 20°C/W junction-to-lead resistance and 100°C/W junction-to-ambient resistance, supporting 5W steady-state dissipation. It meets JESD201 Class 2 whisker resistance and UL 94V-0 molding compound requirements for high-reliability automotive PCB assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 15.6 V / 17.2 V - Breakdown occurs within this range at 1 mA test current, defining turn-on threshold tolerance |
| VC @ IPPM | 23.2 V - Clamping voltage at 43.1 A peak pulse current, limiting downstream voltage stress |
| PPK | 1000 W - Peak pulse power handling per 1 ms waveform, per IEC 61000-4-5 and ISO 7637-2 |
| TJ max | +175 °C - Maximum junction temperature, enabling operation in under-hood automotive environments |
| Package | DO-214AA (SMB) - Surface-mount outline with 0.110 g mass, compatible with automated pick-and-place |
Pinout & Package
DO-214AA (SMB) package: cathode-band marked end denotes terminal 1 (cathode); anode is unmarked end (terminal 2). Matte tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased clamping node | Connected to protected line (e.g., 12V rail); conducts during overvoltage transients to shunt energy to ground |
| Anode (unmarked end) | Reference/ground return | Typically tied to system ground or low-impedance return path; completes clamping current loop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing |
| Glass-passivated junction | Enhances long-term stability and leakage control under thermal stress and humidity exposure |
| ISO 7637-2 compliance | Withstands defined automotive transients (Pulse 1, 2a, 2b, 3a, 3b) without degradation or failure |
| Sub-1 ps response time | Enables effective suppression of nanosecond-scale ESD and fast electrical fast transients (EFT) |
| Moisture sensitivity level 1 | Allows unlimited floor life before reflow; no baking required prior to assembly |
Applications
| Automotive Power Rail Protection | LED Lighting Driver Protection |
|---|---|
Use Scenario: 12V battery-fed ECUs exposed to load dump and alternator surge events. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp transients before they reach LDOs or microcontrollers. Use Value: Limits voltage to ≤23.2V during 1000W pulses, preventing latch-up or permanent damage to downstream 3.3V/5V logic. | Use Scenario: Constant-current LED drivers in vehicle exterior lighting subjected to ESD and switching noise. IC Role / Device Role / Timing Role: TVS mounted across driver IC supply pins to absorb fast transients induced by relay switching or nearby RF sources. Use Value: Maintains <5 µA leakage at 14V, avoiding false triggering while clamping ESD pulses to safe levels for 40V-rated driver FETs. |
| Industrial Sensor Interface Protection | DC Motor Control Board Protection |
Use Scenario: CAN/LIN bus nodes with analog sensor inputs in factory automation equipment. IC Role / Device Role / Timing Role: TVS on sensor VDD line to prevent transient coupling into precision ADC reference paths. Use Value: 23.2V clamping ensures signal chain remains within ±0.5% full-scale error margin during 1kV ESD events. | Use Scenario: H-bridge motor drivers controlling 24V brushed DC motors in robotics systems. IC Role / Device Role / Timing Role: TVS on main power rail to suppress inductive kickback from motor coil de-energization. Use Value: Withstands 100A surge current (IFSM) and clamps flyback spikes to protect gate drivers and bootstrap capacitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14A (ON Semiconductor) | Same DO-214AA package; VBR = 15.6–17.2V, VC = 23.2V, PPK = 600W (lower than SMB10J14AH's 1000W) | Rated for lower peak power; suitable for non-automotive or less severe transient environments | Select when cost sensitivity outweighs need for full ISO 7637-2 Pulse 5a compliance |
| P6SMB14A (Littelfuse) | Identical electrical specs (VWM=14V, VC=23.2V, PPK=1000W); AEC-Q101 qualified; same DO-214AA footprint | No functional difference; validated for identical automotive use cases | Drop-in alternative with equivalent qualification and thermal performance |
Compared with SMBJ14A and P6SMB14A, the SMB10J14AH delivers identical clamping performance and AEC-Q101 compliance but offers higher surge robustness margin due to its 1000W rating-critical for front-end protection in 12V/24V automotive modules subject to repeated load dump events.
Availability
SMB10J14AH is available at Aetrix Electronics and suitable for automotive electronics, LED lighting systems, industrial sensor interfaces, and DC motor control boards requiring stable component supply and AEC-Q101-compliant transient protection.
Supply support for SMB10J14AH 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive and industrial markets.
The SMB10JxxAH series was developed specifically for AEC-Q101-compliant, high-power transient suppression in harsh automotive environments, emphasizing thermal robustness, fast response, and long-term reliability under cyclic stress.
FAQ
What is the maximum clamping voltage of SMB10J14AH at its rated peak pulse current?
The SMB10J14AH has a maximum clamping voltage (VC) of 23.2 V at 43.1 A peak pulse current (IPPM), measured under the standard 10/1000 µs waveform. This value ensures protected circuits remain below critical voltage thresholds during ISO 7637-2 Pulse 1 and Pulse 2b events. The SMB10J14AH maintains this clamping performance across its full operating temperature range of –55°C to +175°C.
Is SMB10J14AH suitable for bidirectional transient protection?
No, SMB10J14AH is unidirectional and intended for reverse-biased clamping only. For bidirectional protection, the SMB10J14CAH variant must be used-it features symmetrical breakdown in both polarities. Using SMB10J14AH in bidirectional configurations risks forward conduction and failure during positive transients. Always verify polarity marking and circuit topology before selecting SMB10J14AH.
Does SMB10J14AH require special handling or baking before SMT assembly?
No, SMB10J14AH has moisture sensitivity level (MSL) 1 per J-STD-020, meaning it may be stored indefinitely at ambient conditions without baking or dry-packing. Its DO-214AA (SMB) package uses matte tin-plated leads compliant with J-STD-002, supporting standard reflow profiles. No pre-assembly conditioning is needed for SMB10J14AH.
What automotive transient standards does SMB10J14AH meet?
SMB10J14AH meets ISO 7637-2 requirements for Pulse 1 (inductive load disconnect), Pulse 2a (sudden load removal), Pulse 2b (supply interruption), Pulse 3a (capacitive coupled noise), and Pulse 3b (inductive coupled noise). It also supports IEC 61000-4-2 (ESD) and IEC 61000-4-4 (EFT) immunity testing when applied per recommended layout guidelines. These qualifications are confirmed in Taiwan Semiconductor's AEC-Q101 test report for SMB10J14AH.
How does SMB10J14AH compare to SMBJ14A in terms of surge capability?
SMB10J14AH delivers 1000W peak pulse power versus SMBJ14A's 600W rating-reflecting a 67% higher surge energy absorption capacity. Both share identical VWM (14V), VBR (15.6–17.2V), and VC (23.2V), but SMB10J14AH sustains higher IPPM (43.1A vs. 26.3A) and withstands more severe load dump events. This makes SMB10J14AH preferable for front-end protection in automotive body control modules where Pulse 5a stress is present.
SMB10J14AH 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:
- 1
- Bidirectional Channels:
- -
- 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)
SMB10J14AH FAQ
1.How can I place an order for SMB10J14AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J14AH 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 SMB10J14AH reliable?
The price and inventory of SMB10J14AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J14AH is usually 5 days.
3.What payment methods are accepted for SMB10J14AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J14AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J14AH?
SMB10J14AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J14AH 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 SMB10J14AH?
For technical support, including SMB10J14AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J14AH requirements.
6.How does Aetrix verify that SMB10J14AH is sourced from the original manufacturer or authorized distributors?
All SMB10J14AH 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 SMB10J14AH meets industry standards.
7.What is the process for return or replacement of SMB10J14AH?
All SMB10J14AH units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J14AH, 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 SMB10J14AH part is unused and in its original packaging.
Return procedure for SMB10J14AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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