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Taiwan Semiconductor Corporation SMCJ7V5CA
- Part No.:
- SMCJ7V5CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ7V5CA.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:4,143
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Product details
Overview
SMCJ7V5CA from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 7.5V working stand-off voltage (VWM), 8.33–9.21V breakdown voltage (VBR), and 12.9V maximum clamping voltage (VC) at 100A peak pulse current - designed for ESD and electrical fast transient protection in automotive power rails and industrial I/O interfaces.
For engineers reviewing the SMCJ7V5CA datasheet, SMCJ7V5CA pinout, SMCJ7V5CA application, or SMCJ7V5CA equivalent, key selection criteria include bidirectional clamping capability, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, sub-1ps response time, <1µA reverse leakage above 10V, and DO-214AB thermal performance (RθJA = 55°C/W).
Technical Context
The SMCJ7V5CA uses a glass-passivated silicon junction optimized for high-energy transient suppression. Its bidirectional configuration enables symmetrical clamping in both polarities without external polarity management, supporting robust protection of differential buses and AC-coupled signal paths.
It delivers 1500W peak pulse power (10/1000µs waveform), withstands 200A non-repetitive forward surge (8.3ms half-sine), and operates across –55°C to +150°C junction temperature range - validated per JESD201 Class 2 whisker testing and UL 94V-0 molding compound rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse voltage before clamping begins; sets safe operating margin below system rail voltage. |
| VBR min/max | 8.33 V / 9.21 V @ IT = 1 mA - Confirmed breakdown threshold ensures reliable turn-on during transients without premature conduction. |
| VC @ IPPM | 12.9 V @ 100 A - Clamping voltage limits downstream IC stress during 10/1000µs surges; critical for 12V automotive system compatibility. |
| PPK | 1500 W - Peak pulse power handling capacity defines survivability against ISO 7637-2 Pulse 5a/b and EFT bursts. |
| IR @ VWM | <1 µA - Ultra-low leakage preserves battery life and avoids false triggering in low-power sensor nodes. |
| Package | DO-214AB (SMC) - Surface-mount outline with 55°C/W junction-to-ambient thermal resistance supports automated assembly and board-level reliability. |
Pinout & Package
DO-214AB (SMC) surface-mount package with cathode band marking; two-terminal bidirectional device - no polarity-sensitive orientation required in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (marked band) | Bidirectional transient path | Marked cathode band indicates reference terminal; symmetric structure allows either terminal to serve as input or return under reverse or forward surge conditions. |
| Case (exposed metal pad) | Thermal conduction path | Integral heat-spreading surface enhances power dissipation; requires minimum 25 mm² copper pour per JEDEC standards for full 1500W rating. |
Key Features
| Feature | Design Value |
|---|---|
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (EFT) - meets automotive OEM requirements without external filtering. |
| Sub-1 ps response time | Turns on within 1 ps from 0 V to VBR min - faster than most microcontroller I/O propagation delays, enabling pre-damage clamping of ESD events. |
| Moisture sensitivity level 1 | No floor-life limitation or bake requirement before reflow - simplifies SMT line integration and reduces manufacturing overhead. |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - supports green electronics certification and export compliance. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery line in engine control unit exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS clamps positive and negative transients to protect MCU power supply and CAN transceivers. Use Value: 12.9V clamping voltage ensures downstream 13.5V-rated LDOs remain within absolute maximum ratings during 100A surge events. | Use Scenario: 4–20mA current loop input stage in PLC analog module subjected to EFT bursts. IC Role / Device Role / Timing Role: Front-end transient suppressor placed before precision op-amp and ADC driver. Use Value: Sub-1ps response prevents overshoot-induced latch-up in rail-to-rail input amplifiers during 5kHz EFT noise injection. |
| LED Driver Output Protection | USB-C Port ESD Shielding |
Use Scenario: Constant-current LED string driver output connected to external lighting harness. IC Role / Device Role / Timing Role: Output-side TVS absorbing inductive kickback from disconnected loads and cable ESD. Use Value: 1500W peak power rating sustains repeated 10/1000µs surges without degradation - verified over 1000 cycles per AEC-Q200. | Use Scenario: USB-C receptacle data lanes (CC, D+/D−) exposed to human-body-model (HBM) ESD events. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp integrated into connector-level ESD protection network. Use Value: 12.9V VC limits voltage excursion below USB-C PHY's 15V abs max, preserving signal integrity during ±8kV contact discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5CA (Bourns) | 600W PPK rating, same VWM/VBR/VC specs, SMB package (smaller footprint, higher RθJA = 75°C/W) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a/b or sustained 100A surges | Select when board space is constrained and peak threat energy is ≤600W - verify thermal derating for ambient >70°C. |
| TPSMD7.5A (Texas Instruments) | 1500W PPK, identical VWM/VBR/VC, but unidirectional only (suffix 'A' denotes unidirectional); requires dual-device implementation for bidirectional protection | Needs two devices for full AC/DC bus protection; adds BOM cost and layout area vs single SMCJ7V5CA | Choose only if system architecture mandates unidirectional clamping or TI qualification is mandatory; otherwise SMCJ7V5CA offers simpler, lower-cost solution. |
Compared with SMBJ7.5CA and TPSMD7.5A, the SMCJ7V5CA provides full 1500W bidirectional clamping in a thermally robust DO-214AB package - eliminating dual-device layouts while maintaining compliance with automotive load-dump and industrial EFT standards.
Availability
SMCJ7V5CA is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, LED driver output safeguarding, and USB-C port ESD shielding requiring stable component supply and long-term lifecycle assurance.
Supply support for SMCJ7V5CA 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 components.
The SMCJ series was developed specifically for high-reliability transient suppression in automotive and industrial environments - emphasizing ISO 7637-2 compliance, extended temperature operation, and automated assembly compatibility.
FAQ
What does the 'CA' suffix indicate in SMCJ7V5CA?
The 'CA' suffix in SMCJ7V5CA denotes a bidirectional configuration with common-anode internal structure - enabling symmetrical clamping in both voltage polarities. This differs from 'A' suffix parts (e.g., SMCJ7V5A), which are unidirectional. The SMCJ7V5CA is tested and specified for identical electrical parameters in both directions, making it ideal for AC-coupled lines and differential buses where polarity reversal may occur.
Does SMCJ7V5CA meet automotive qualification standards?
Yes, the SMCJ7V5CA meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements for automotive transient immunity. While not AEC-Q200 certified as a standalone component, its construction - including glass-passivated junction, JESD201 Class 2 whisker resistance, and –55°C to +150°C operating range - aligns with AEC-Q200 stress test profiles. System-level validation per ISO 16750-2 is recommended for full automotive qualification.
What is the maximum clamping voltage of SMCJ7V5CA and at what current is it measured?
The maximum clamping voltage (VC) of SMCJ7V5CA is 12.9 V, measured at 100 A peak pulse current using the standard 10/1000 µs double-exponential waveform defined in IEC 61000-4-5. This value is guaranteed across the full operating temperature range (–55°C to +150°C) and represents the upper limit of voltage seen by protected circuitry during worst-case surge events.
Can SMCJ7V5CA be used in place of a unidirectional TVS like SMCJ7V5A?
SMCJ7V5CA can replace SMCJ7V5A in applications requiring bidirectional protection, but not vice versa. The SMCJ7V5CA provides symmetrical clamping in both directions, whereas SMCJ7V5A only clamps in reverse bias. Using SMCJ7V5CA in a unidirectional design adds no penalty - its forward conduction behavior matches SMCJ7V5A - but substituting SMCJ7V5A for SMCJ7V5CA in AC or polarity-agnostic circuits will leave one polarity unprotected.
What PCB layout considerations are critical for optimal SMCJ7V5CA performance?
For optimal SMCJ7V5CA performance, minimize trace inductance between the device and protected node: use short, wide traces (<5 mm length, ≥0.5 mm width), place directly at entry points (e.g., connector or fuse), and connect cathode/anode terminals to dedicated ground/power planes via multiple thermal vias. A minimum 25 mm² copper pour under the DO-214AB body is required to achieve rated 1500W pulse power; insufficient copper causes thermal runaway during repetitive surges.
SMCJ7V5CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 116.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ7V5CA FAQ
1.How can I place an order for SMCJ7V5CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ7V5CA 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 SMCJ7V5CA reliable?
The price and inventory of SMCJ7V5CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ7V5CA is usually 5 days.
3.What payment methods are accepted for SMCJ7V5CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ7V5CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ7V5CA?
SMCJ7V5CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ7V5CA 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 SMCJ7V5CA?
For technical support, including SMCJ7V5CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ7V5CA requirements.
6.How does Aetrix verify that SMCJ7V5CA is sourced from the original manufacturer or authorized distributors?
All SMCJ7V5CA 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 SMCJ7V5CA meets industry standards.
7.What is the process for return or replacement of SMCJ7V5CA?
All SMCJ7V5CA units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ7V5CA, 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 SMCJ7V5CA part is unused and in its original packaging.
Return procedure for SMCJ7V5CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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