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Taiwan Semiconductor Corporation SMDJ64CAH
- Part No.:
- SMDJ64CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMDJ64CAH.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,160
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Product details
Overview
SMDJ64CAH from Taiwan Semiconductor is a bidirectional 64 V stand-off transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, rated for 3000 W peak pulse power, 103 V maximum clamping voltage at 29.1 A peak current, and -55 °C to +175 °C operating junction temperature. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the SMDJ64CAH datasheet, SMDJ64CAH pinout, SMDJ64CAH application, or SMDJ64CAH equivalent, key selection criteria include bidirectional clamping performance at 64 V working voltage, sub-1 ps response time, AEC-Q101 qualification, moisture sensitivity level 1 handling, and DO-214AB thermal resistance (RθJA = 75 °C/W).
Technical Context
The SMDJ64CAH implements a glass-passivated silicon avalanche junction optimized for high-energy transient suppression in bidirectional signal and power lines. Its breakdown voltage range (71.1–78.6 V at 1 mA) ensures reliable triggering above system nominal voltage while maintaining margin below downstream component ratings.
Designed for automotive-grade reliability, the device meets ISO 7637-2 test pulses and supports fast transient immunity without derating up to 125 °C ambient. Thermal design leverages RθJL = 15 °C/W to sustain 6.5 W steady-state dissipation under PCB copper area constraints typical of SMC footprint layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 71.1 V / 78.6 V at 1 mA - Ensures consistent turn-on across production lot and temperature |
| VC@IPPM | 103 V at 29.1 A - Clamping voltage limits downstream IC stress during 10/1000 µs surge events |
| PPK | 3000 W - Peak pulse power rating per single non-repetitive 1 ms waveform (Fig.5) |
| TJ max | +175 °C - Enables operation in under-hood automotive environments with minimal thermal derating |
| RθJA | 75 °C/W - Defines required PCB copper area and airflow for thermal management in SMC layout |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, bidirectional configuration with cathode band omitted (symmetrical terminals). Matte tin-plated leads, UL 94V-0 molding compound, 0.290 g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode | Bidirectional transient path | Identical electrical behavior in both directions; no polarity marking required |
| Case | Thermal conduction path | DO-214AB metal tab provides primary heat transfer to PCB copper pour |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TC, UHAST, and ESD-HBM/MM |
| Clamping response time | <1.0 ps - Limits voltage overshoot during nanosecond-scale ESD and lightning-induced surges |
| ISO 7637-2 compliance | Passes Pulse 1 (inductive load dump), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (switching noise) |
| Moisture sensitivity | Level 1 per J-STD-020 - No bake requirement prior to reflow soldering |
| Halogen-free construction | Complies with IEC 61249-2-21 - Supports RoHS and environmental compliance in end equipment |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
Use Scenario: 12 V/24 V battery rail protection in body control modules and ADAS ECUs exposed to load dump and jump-start transients. IC Role / Device Role / Timing Role: Primary bidirectional clamping element placed upstream of DC-DC converters and microcontrollers. Use Value: Limits voltage to ≤103 V during 3000 W ISO 7637-2 Pulse 5a events, preventing latch-up or gate oxide damage in downstream silicon. | Use Scenario: 24 V digital input channel protection in programmable logic controllers interfacing with field sensors and actuators. IC Role / Device Role / Timing Role: Standoff protector on isolated input terminals subjected to inductive switching transients and ESD contact discharge. Use Value: Maintains 64 V working voltage margin while clamping 29.1 A surges within 103 V, preserving signal integrity and enabling >100 kV ESD immunity. |
| Telecom DC Power Feeds | Renewable Energy Inverter Control |
Use Scenario: -48 V DC power feed protection in base station remote radio units and optical line terminals. IC Role / Device Role / Timing Role: Bidirectional TVS on telecom power bus to absorb lightning-induced common-mode surges and hot-swap transients. Use Value: Withstands repetitive 3000 W pulses without degradation, supporting long-term reliability in outdoor infrastructure with minimal maintenance. | Use Scenario: 600 V DC link monitoring circuit protection in solar string inverters where sensor bias rails face coupling from fast-switching SiC MOSFETs. IC Role / Device Role / Timing Role: Secondary-level clamp on auxiliary supply rails feeding isolation amplifiers and gate drivers. Use Value: Fast <1 ps response prevents false triggering of overvoltage protection circuits during dV/dt events from adjacent power stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC64CA | Same 64 V VWM, but lower PPK = 1500 W and higher VC = 110 V at 13.5 A | Limited to lower-energy transients; not rated for ISO 7637-2 Pulse 5a | Select when cost sensitivity outweighs automotive surge margin and thermal robustness |
| SMCJ64CA | Identical VWM, VBR, and VC, but rated for 1500 W PPK and lacks AEC-Q101 qualification | Suitable for industrial use only; not validated for automotive temperature cycling or humidity testing | Choose for non-automotive designs requiring same clamping performance without automotive certification overhead |
Compared with SAC64CA and SMCJ64CA, the SMDJ64CAH delivers 100% higher peak pulse power (3000 W vs. 1500 W), tighter clamping (103 V vs. ≥110 V), and full AEC-Q101 validation-making it the only option qualified for under-hood automotive deployment with sustained thermal performance up to +175 °C junction temperature.
Availability
SMDJ64CAH is available at Aetrix Electronics and suitable for automotive power distribution, industrial PLC I/O protection, and telecom DC power feeds requiring stable component supply across multi-year production cycles.
Supply support for SMDJ64CAH 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, serving global automotive, industrial, and consumer markets since 1979.
The SMDJ series was developed specifically for high-reliability transient suppression in automotive electronics, emphasizing AEC-Q101 qualification, ISO 7637-2 compliance, and robust thermal performance in surface-mount packages.
FAQ
What is the maximum clamping voltage of the SMDJ64CAH under standard test conditions?
The SMDJ64CAH has a maximum clamping voltage (VC) of 103 V at 29.1 A peak pulse current (IPPM) using the 10/1000 µs waveform defined in Fig.5 of the datasheet. This value is guaranteed across temperature and production lot, ensuring predictable overvoltage limiting for protected circuits downstream of the SMDJ64CAH.
Is the SMDJ64CAH suitable for automotive applications?
Yes, the SMDJ64CAH is AEC-Q101 qualified and explicitly tested to meet ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements. Its -55 °C to +175 °C junction temperature range, glass-passivated junction, and moisture sensitivity level 1 rating make it suitable for under-hood and chassis-mounted automotive systems where the SMDJ64CAH serves as primary transient protection.
How does the bidirectional configuration of the SMDJ64CAH affect its PCB layout?
The SMDJ64CAH is symmetrical-its anode and cathode terminals are functionally identical-so no polarity marking is present on the DO-214AB package. PCB layout requires no orientation constraint, simplifying automated placement and reducing assembly errors. Thermal relief should prioritize the metal tab (case) connection to large copper pours, as the SMDJ64CAH relies on case-to-PCB conduction for RθJA = 75 °C/W performance.
What is the peak pulse current rating for the SMDJ64CAH?
The SMDJ64CAH supports a peak pulse current (IPPM) of 29.1 A under the standard 10/1000 µs waveform at TA = 25 °C. This rating is derived directly from its 3000 W peak pulse power and 103 V clamping voltage (I = P/V), and is confirmed in the Electrical Specifications table for SMDJ64CAH in the Taiwan Semiconductor datasheet revision B2104.
Does the SMDJ64CAH require special handling during reflow soldering?
No special baking is required-the SMDJ64CAH is rated at moisture sensitivity level 1 per J-STD-020, meaning it can be stored indefinitely at ≤30 °C/60% RH and processed through standard lead-free reflow profiles without preconditioning. Its matte tin-plated leads comply with J-STD-002 for solderability, and the UL 94V-0 molding compound withstands peak temperatures up to 260 °C during reflow, ensuring robust assembly yield for the SMDJ64CAH.
SMDJ64CAH 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 29.1A
- 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)
SMDJ64CAH FAQ
1.How can I place an order for SMDJ64CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDJ64CAH 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 SMDJ64CAH reliable?
The price and inventory of SMDJ64CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDJ64CAH is usually 5 days.
3.What payment methods are accepted for SMDJ64CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDJ64CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDJ64CAH?
SMDJ64CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDJ64CAH 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 SMDJ64CAH?
For technical support, including SMDJ64CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDJ64CAH requirements.
6.How does Aetrix verify that SMDJ64CAH is sourced from the original manufacturer or authorized distributors?
All SMDJ64CAH 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 SMDJ64CAH meets industry standards.
7.What is the process for return or replacement of SMDJ64CAH?
All SMDJ64CAH units undergo pre-shipment inspection (PSI). If there is an issue with SMDJ64CAH, 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 SMDJ64CAH part is unused and in its original packaging.
Return procedure for SMDJ64CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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