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Taiwan Semiconductor Corporation SMCJ64CAH
- Part No.:
- SMCJ64CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ64CAH.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,896
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Product details
Overview
SMCJ64CAH from Taiwan Semiconductor is a bidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 64V working stand-off voltage (VWM), 71.1–78.6V breakdown voltage (VBR), and 103V maximum clamping voltage (VC) at 15A peak impulse current - designed to protect automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the SMCJ64CAH datasheet, SMCJ64CAH pinout, SMCJ64CAH application, or SMCJ64CAH equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, <1.0ps response time, sub-1µA reverse leakage at VWM, and compliance with IEC 61249-2-21 halogen-free standards.
Technical Context
The SMCJ64CAH is a glass-passivated, single-die, bidirectional TVS diode optimized for high-energy surge suppression in automotive and industrial environments. It meets ISO 7637-2 test pulses (1, 2a, 2b, 3a, 3b) and delivers 1500W peak pulse power at 1ms, with junction temperature range of –55°C to +150°C and thermal resistance RθJC = 10°C/W.
Its electrical behavior is symmetric in both directions due to bipolar construction, with clamping performance validated at 15A (IPPM) yielding VC ≤ 103V. The device features matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 71.1 V / 78.6 V @ IT = 1 mA - Confirmed breakdown threshold ensuring reliable turn-on during transients |
| VC @ IPPM | 103 V @ 15 A - Clamped voltage under 10/1000μs surge, limiting downstream IC stress |
| PPK | 1500 W - Peak pulse power handling per 1ms waveform, enabling robust load-dump immunity |
| IR @ VWM | <1 µA - Negligible leakage current preserving system efficiency and battery life |
| TJ max | +150 °C - Extended junction temperature rating supporting under-hood automotive placement |
| Response time | <1.0 ps - Near-instantaneous avalanche turn-on for ESD and fast-edge transients |
Pinout & Package
DO-214AB (SMC) surface-mount package: molded UL 94V-0 compound, cathode band marking for polarity identification (bidirectional operation renders band non-functional but retained for legacy compatibility), 0.210g mass, and matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (marked band) | Bidirectional terminal pair | Identical clamping behavior in either direction; no functional polarity - band is mechanical reference only |
| Case (body) | Thermal and mechanical interface | Provides primary heat path to PCB copper; RθJC = 10°C/W enables effective power dissipation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Glass passivated junction | Ensures stable VBR over lifetime and resistance to humidity-induced parameter drift |
| ISO 7637-2 compliance | Guarantees protection against real-world automotive transients: load dump (Pulse 5a/b), jump start (Pulse 1/2a/2b), and line decay (Pulse 3a/3b) |
| Moisture sensitivity level 1 | Zero bake requirement before reflow - compatible with standard SMT assembly without dry-pack handling |
| Halogen-free (IEC 61249-2-21) | Meets environmental compliance for RoHS and ELV directives without compromising flame retardancy or electrical performance |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 12V/24V battery-fed ECUs, body control modules, and lighting drivers from load dump and jump-start surges. IC Role / Device Role / Timing Role: Primary clamping element placed at power entry point to limit rail voltage excursion during ISO 7637-2 Pulse 5a/b events. Use Value: Limits peak rail voltage to ≤103V during 15A transients, preventing damage to downstream DC-DC controllers and microcontrollers rated for 36V absolute max. | Use Scenario: Safeguarding analog input channels and digital I/O on programmable logic controllers exposed to inductive switching noise and lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional transient clamp across signal lines referenced to chassis ground, suppressing ±1kV EFT bursts per IEC 61000-4-4. Use Value: Maintains signal integrity by clamping transients within 1.0ps, with <1µA leakage preserving high-impedance sensor measurement accuracy. |
| Telecom Base Station Power Rails | Renewable Energy Inverter DC Link |
Use Scenario: Shielding 48V telecom power supplies from lightning-induced surges on outdoor feeder lines and backup battery connections. IC Role / Device Role / Timing Role: Secondary overvoltage protection stage after upstream MOVs, absorbing residual energy with precise 64V clamping threshold. Use Value: Delivers 1500W peak power handling at 1ms, enabling coordination with upstream protection while avoiding nuisance tripping during normal line fluctuations. | Use Scenario: Protecting high-voltage DC link capacitors and gate drivers in solar inverters subjected to grid-switching transients and partial discharge events. IC Role / Device Role / Timing Role: Fast-acting bidirectional clamp across DC+ and DC− bus terminals to suppress common-mode surges up to 103V. Use Value: With TJ max = +150°C and RθJC = 10°C/W, sustains repeated surge duty cycles in thermally constrained inverter enclosures without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64CA | 600W PPK rating, SMA package (smaller footprint, higher RθJA = 85°C/W), same VWM/VBR/VC specs | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a/b load dump | Select when space-constrained and surge energy ≤600W; verify thermal margin in enclosed environments |
| 1.5KE64CA | Through-hole DO-201 package, 1500W PPK, identical VWM/VBR/VC, but slower response (~1ns) and no AEC-Q101 qualification | Not automotive-qualified; requires wave solder or hand-solder; less suitable for automated SMT lines | Select for cost-sensitive industrial designs where AEC-Q101 and SMT placement are not required |
Compared with SMAJ64CA and 1.5KE64CA, the SMCJ64CAH provides superior automotive readiness (AEC-Q101), higher surge robustness in compact SMT form, and faster response - making it optimal for modern vehicle ECUs and high-reliability industrial controls where board space, thermal performance, and qualification rigor are critical.
Availability
SMCJ64CAH is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, and telecom power systems requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant surge protection.
Supply support for SMCJ64CAH 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 SMCJ series is part of TSC's AEC-Q101-qualified transient suppression portfolio, engineered specifically for automotive and harsh-environment industrial applications demanding high pulse power, fast response, and long-term reliability under thermal and mechanical stress.
FAQ
What does the "CAH" suffix indicate in SMCJ64CAH?
The "CAH" suffix in SMCJ64CAH denotes a bidirectional configuration (C), AEC-Q101 qualification (A), and high-reliability construction (H). Unlike unidirectional variants (e.g., SMCJ64H), the CAH version provides symmetrical clamping in both polarities - essential for protecting AC-coupled or floating signal lines and DC buses where polarity reversal may occur. This is confirmed in the datasheet's "Devices for bipolar applications" section.
Is SMCJ64CAH suitable for ISO 7637-2 Pulse 5a (load dump) protection?
Yes, SMCJ64CAH is explicitly rated to meet ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b - and its 1500W peak pulse power, 103V clamping voltage at 15A, and 150°C junction rating make it appropriate for Pulse 5a (load dump) when used with proper layout and upstream impedance. The datasheet confirms compliance in the FEATURES section, and its VWM = 64V aligns with 12V/24V system requirements.
What is the maximum clamping voltage (VC) of SMCJ64CAH and at what test condition?
The maximum clamping voltage (VC) of SMCJ64CAH is 103 V, measured at a peak impulse current (IPPM) of 15 A using the standardized 10/1000 μs double-exponential surge waveform defined in Fig.5 of the datasheet. This value is guaranteed across temperature and lifetime, and appears in the ELECTRICAL SPECIFICATIONS table for SMCJ64AH (identical to SMCJ64CAH per marking code GGM and specification row).
Does SMCJ64CAH require moisture sensitivity baking before reflow soldering?
No, SMCJ64CAH has a moisture sensitivity level (MSL) of 1 per J-STD-020, meaning it is exempt from floor-life limits and does not require dry-pack storage or pre-reflow baking. This simplifies SMT manufacturing and eliminates yield loss from moisture-related popcorning - a key advantage over MSL 2 or higher discrete components.
How does the thermal performance of SMCJ64CAH compare to similar TVS diodes in DO-214AB packages?
SMCJ64CAH achieves RθJC = 10°C/W and RθJA = 55°C/W, matching industry-leading thermal performance for DO-214AB TVS diodes. Its low junction-to-case resistance enables efficient heat transfer to the PCB copper, allowing sustained 1500W surge handling without exceeding TJ max = +150°C - outperforming many competing parts with RθJC > 12°C/W and requiring larger thermal pads or derating.
SMCJ64CAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- SMCJ
- 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):
- 15A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ64CAH FAQ
1.How can I place an order for SMCJ64CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ64CAH 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 SMCJ64CAH reliable?
The price and inventory of SMCJ64CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ64CAH is usually 5 days.
3.What payment methods are accepted for SMCJ64CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ64CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ64CAH?
SMCJ64CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ64CAH 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 SMCJ64CAH?
For technical support, including SMCJ64CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ64CAH requirements.
6.How does Aetrix verify that SMCJ64CAH is sourced from the original manufacturer or authorized distributors?
All SMCJ64CAH 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 SMCJ64CAH meets industry standards.
7.What is the process for return or replacement of SMCJ64CAH?
All SMCJ64CAH units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ64CAH, 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 SMCJ64CAH part is unused and in its original packaging.
Return procedure for SMCJ64CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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