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Taiwan Semiconductor Corporation SMDJ10AH
- Part No.:
- SMDJ10AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMDJ10AH.pdf
- Description:
- TVS DIODE 10VWM 17VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,530
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Product details
Overview
SMDJ10AH from Taiwan Semiconductor is a unidirectional 3000W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 10V working stand-off voltage (VWM), 11.1–12.3V breakdown voltage (VBR), and 17.0V maximum clamping voltage (VC) at 176.5A peak pulse current - designed for automotive-grade ESD and load-switching surge protection in power supply rails.
For engineers reviewing the SMDJ10AH datasheet, SMDJ10AH pinout, SMDJ10AH application, or SMDJ10AH equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, AEC-Q101 qualification status, thermal resistance (RθJA = 75°C/W), and unidirectional polarity marking for correct PCB orientation.
Technical Context
The SMDJ10AH operates as a silicon avalanche diode with glass-passivated junction, delivering sub-1ps response time to clamp fast transients. Its single-die unidirectional configuration ensures low forward voltage (VF = 3.5V @ 100A) and high surge robustness (IFSM = 300A, 8.3ms half-sine).
Designed for automotive and industrial environments, it meets ISO 7637-2 immunity requirements and supports junction temperatures from –55°C to +175°C. Thermal performance is defined by RθJL = 15°C/W and RθJA = 75°C/W, enabling reliable operation under sustained power dissipation up to 6.5W at 25°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 11.1 / 12.3 V @ 1 mA - Confirmed avalanche onset range ensuring predictable turn-on margin |
| VC @ IPPM | 17.0 V @ 176.5 A - Clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPK | 3000 W - Peak pulse power handling per non-repetitive 1 ms waveform (Fig.5) |
| TJ max | +175 °C - Maximum junction temperature enabling under-hood automotive deployment |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance defining heatsinking requirements |
| IR @ VWM | 5 µA - Reverse leakage at rated stand-off, minimizing quiescent power loss |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, polarity indicated by cathode band. Weight: 0.290 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts during forward surge events |
| Cathode | Reverse-biased clamping terminal | Connected to higher-potential rail; avalanches into conduction when reverse V > VBR |
| Cathode band | Polarity marker | Visible marking on package body indicating cathode end - critical for correct unidirectional orientation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements including HTOL, TC, HAST, and UHST |
| Glass passivated junction | Enhances long-term reliability and moisture resistance vs. epoxy-passivated alternatives |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling) |
| Sub-1 ps response time | Enables clamping before sensitive ICs experience overvoltage damage during ESD or lightning-induced surges |
| J-STD-020 MSL Level 1 | Unlimited floor life at ≤30°C/60% RH - no baking required prior to reflow assembly |
Applications
| Automotive Power Rail Protection | Industrial DC Power Input |
|---|---|
Use Scenario: Protecting 12V battery-fed ECUs against load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and ground, clamping reverse surges above 12V. Use Value: Limits peak voltage to 17.0V during 3000W transients, preserving MCU and CAN transceiver integrity. | Use Scenario: Safeguarding programmable logic controllers (PLCs) against switching surges from inductive solenoids and contactors. IC Role / Device Role / Timing Role: Standoff-rated TVS on 24V DC input, absorbing repetitive 10/1000µs pulses without degradation. Use Value: Maintains <5 µA leakage at 10V, minimizing standby current while delivering 176.5A surge current capacity. |
| Telecom DC Feeds | Consumer Equipment AC/DC Adapter Outputs |
Use Scenario: Shielding PoE-powered switches and base stations from induced lightning surges on 48V DC distribution lines. IC Role / Device Role / Timing Role: Primary clamping device on secondary-side DC bus, coordinated with upstream MOVs and filters. Use Value: Achieves 17.0V clamping at 176.5A with 75°C/W thermal resistance, enabling compact board layout. | Use Scenario: Preventing ESD damage to USB-C PD controllers and buck converters in wall adapters. IC Role / Device Role / Timing Role: Final-stage TVS on regulated 5V/9V/15V output rails, responding within <1 ps to human-body-model discharges. Use Value: Glass-passivated junction ensures stable VBR over 1000+ surge events, supporting 5-year product lifecycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC10 | Lower PPK (1500W), same VWM (10V), higher VC (20.0V @ 100A), DO-214AC (SMA) package | Reduced surge margin; suitable only for non-automotive, low-energy transients | Select SAC10 only if space-constrained and surge energy is ≤1500W; not AEC-Q101 qualified |
| 1.5KE10A | Through-hole TO-218 package, identical VWM/VBR/VC specs, PPK = 1500W, no AEC-Q101 or ISO 7637-2 validation | Requires PCB through-hole mounting; unsuitable for automated SMT lines or automotive vibration environments | Choose 1.5KE10A only for legacy through-hole designs where rework cost exceeds redesign effort |
Compared with SAC10 and 1.5KE10A, the SMDJ10AH delivers 100% higher peak power rating, AEC-Q101 qualification, and ISO 7637-2 compliance - making it the sole option for new automotive and high-reliability industrial designs requiring surface-mount surge immunity.
Availability
SMDJ10AH is available at Aetrix Electronics and suitable for automotive control units, industrial PLCs, and telecom DC power systems requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMDJ10AH 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 automotive-qualified components.
The SMDJ series was developed specifically for AEC-Q101-compliant, high-power surface-mount transient suppression in harsh automotive and industrial environments - emphasizing clamping accuracy, thermal robustness, and automated assembly compatibility.
FAQ
What is the clamping voltage of the SMDJ10AH under standard surge conditions?
The SMDJ10AH exhibits a maximum clamping voltage (VC) of 17.0 V when subjected to its rated peak pulse current (IPPM) of 176.5 A, measured using the 10/1000 µs waveform per IEC 61000-4-5. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during transient events.
Is the SMDJ10AH suitable for bidirectional transient protection?
No - the SMDJ10AH is a unidirectional TVS diode intended for DC line protection with defined anode/cathode polarity. For bidirectional applications, the SMDJ10CAH variant must be used, which features symmetrical breakdown characteristics in both directions and is marked with "DDX" code.
Does the SMDJ10AH meet automotive qualification standards?
Yes - the SMDJ10AH is explicitly AEC-Q101 qualified and validated to withstand ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b waveforms. Its construction, testing, and packaging comply with automotive reliability requirements including temperature cycling, humidity bias, and mechanical shock.
What is the maximum steady-state power dissipation for the SMDJ10AH?
The SMDJ10AH has a steady-state power dissipation (PD) rating of 6.5 W at TA = 25°C. This value decreases linearly with rising ambient temperature per the derating curve in Figure 2 of the datasheet, reaching zero at approximately 105°C ambient.
How is polarity identified on the SMDJ10AH package?
Polarity is indicated by a visible cathode band on the DO-214AB (SMC) package body - located adjacent to the cathode terminal. This marking aligns with JEDEC standard orientation and must be matched to PCB silkscreen and footprint polarity indicators to ensure correct unidirectional installation of the SMDJ10AH.
SMDJ10AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- SMDJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 176.5A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMDJ10AH FAQ
1.How can I place an order for SMDJ10AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDJ10AH 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 SMDJ10AH reliable?
The price and inventory of SMDJ10AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDJ10AH is usually 5 days.
3.What payment methods are accepted for SMDJ10AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDJ10AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDJ10AH?
SMDJ10AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDJ10AH 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 SMDJ10AH?
For technical support, including SMDJ10AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDJ10AH requirements.
6.How does Aetrix verify that SMDJ10AH is sourced from the original manufacturer or authorized distributors?
All SMDJ10AH 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 SMDJ10AH meets industry standards.
7.What is the process for return or replacement of SMDJ10AH?
All SMDJ10AH units undergo pre-shipment inspection (PSI). If there is an issue with SMDJ10AH, 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 SMDJ10AH part is unused and in its original packaging.
Return procedure for SMDJ10AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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