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Taiwan Semiconductor Corporation SMCJ6V5A
- Part No.:
- SMCJ6V5A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ6V5A.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:5,388
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Product details
Overview
SMCJ6V5A from Taiwan Semiconductor is a unidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 6.5V working stand-off voltage (VWM), 7.22–7.98V breakdown voltage (VBR), and 11.2V maximum clamping voltage (VC) at 500A peak pulse current - designed for automotive load-dump and inductive switching protection in power supply rails.
For engineers reviewing the SMCJ6V5A datasheet, SMCJ6V5A pinout, SMCJ6V5A application, or SMCJ6V5A equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, junction temperature derating above 25°C, unidirectional polarity marking, and compatibility with automated SMT placement on high-reliability PCBs.
Technical Context
The SMCJ6V5A employs a glass-passivated silicon junction optimized for sub-nanosecond response (<1.0 ps from 0 V to VBR min), enabling effective suppression of fast EFT and ESD transients. Its unidirectional configuration provides forward conduction capability with VF = 3.5 V at 100 A, supporting bidirectional surge handling only when paired with complementary devices.
Thermal design relies on low junction-to-case resistance (RθJC = 10 °C/W) and moderate junction-to-ambient resistance (RθJA = 55 °C/W), requiring adequate copper area per DO-214AB footprint. It operates across –55°C to +150°C junction range and meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse operating voltage before clamping begins; sets minimum system rail margin for reliable standby operation. |
| VBR min/max | 7.22 V / 7.98 V @ IT = 6.5 mA - Validated breakdown threshold ensures consistent turn-on across production lots and temperature. |
| VC @ IPPM | 11.2 V @ 500 A - Clamping voltage during worst-case 10/1000 µs surge; defines maximum stress imposed on protected downstream ICs. |
| PPK | 1500 W - Peak pulse power rating per single 1 ms transient; determines survivability against automotive load dump events. |
| IR @ VWM | <6.5 µA - Reverse leakage at rated stand-off voltage; negligible power loss and signal integrity impact in low-power monitoring circuits. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments with proper thermal relief. |
Pinout & Package
DO-214AB (SMC) surface-mount package with cathode band marking on one end; dual-leaded, gull-wing leadform compatible with standard reflow profiles and automated optical inspection (AOI).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return plane; must handle 200 A non-repetitive IFSM surges without bond wire failure. |
| Cathode | Reverse-biased clamping node / System rail connection | Connected to protected line (e.g., 12 V battery rail); clamps transients to ≤11.2 V when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnection), and Pulse 3a/3b (EFT coupling) - eliminates need for external test validation in automotive ECUs. |
| Glass passivation | Stable VBR over lifetime and humidity exposure; prevents parametric drift in humid industrial enclosures or outdoor lighting housings. |
| Fast response time | <1.0 ps rise-to-VBR - captures sub-nanosecond ESD events before sensitive logic inputs latch erroneous states. |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - supports green manufacturing and export compliance for global OEMs. |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: 12 V battery-fed control module exposed to alternator load dump and ignition coil switching noise. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input, clamping transients within 11.2 V to protect LDOs and microcontrollers. Use Value: Enables compliance with ISO 16750-2 Section 4.7 (load dump) and Section 4.4 (supply voltage transients) without additional filtering stages. | Use Scenario: 24 V digital input channel receiving signals from field sensors in factory automation systems. IC Role / Device Role / Timing Role: Standoff protection device on input terminal block, shunting induced surges from long cable runs before reaching optocoupler or MCU GPIO. Use Value: Prevents false triggering and latch-up in isolated inputs subjected to repetitive 1 kV EFT bursts per IEC 61000-4-4. |
| LED Driver Overvoltage Clamp | Telecom Line Card Surge Suppression |
Use Scenario: Constant-current LED driver board powered from unregulated 12 V supply in streetlight applications. IC Role / Device Role / Timing Role: Primary clamping element across input capacitor, limiting voltage spikes during hot-plug or lightning-induced coupling. Use Value: Extends electrolytic capacitor life by restricting peak voltage to ≤11.2 V, avoiding dielectric stress beyond 16 V rating. | Use Scenario: Low-voltage analog interface on telecom line card connected to outside plant wiring. IC Role / Device Role / Timing Role: First-stage protection on tip/ring lines before protection diodes and op-amp front-end. Use Value: Limits transient energy to <1500 W per event, preventing damage to precision ADC references and analog front-end components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.5A | Lower PPK (600 W), same VWM/VBR range, SMB package (smaller footprint, higher RθJA) | Not suitable for ISO 7637-2 Pulse 1 (load dump); limited to lower-energy ESD/EFT scenarios | Select when space-constrained and peak surge energy is ≤600 W - verify clamping margin with actual waveform testing. |
| 1.5KE6.8A | Through-hole DO-201 package, same 1500 W rating, slightly higher VC (10.5 V @ 134 A) | Requires wave solder or hand-solder process; incompatible with fully SMT production lines | Choose only for legacy through-hole designs or prototyping where rework tolerance outweighs automation benefits. |
Compared with SMBJ6.5A and 1.5KE6.8A, the SMCJ6V5A delivers optimal balance of high-energy surge handling (1500 W), SMT manufacturability, and automotive-grade reliability - making it the preferred choice for new 12 V embedded systems requiring ISO 7637-2 compliance.
Availability
SMCJ6V5A is available at Aetrix Electronics and suitable for automotive control modules, industrial PLC inputs, LED driver boards, and telecom line cards requiring stable component supply across extended temperature and high-surge environments.
Supply support for SMCJ6V5A 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 industrial and automotive markets.
The SMCJ series was developed specifically for high-reliability transient suppression in harsh environments - emphasizing robust clamping consistency, low leakage, and full compliance with ISO 7637-2 and IEC 61000-4-x standards.
FAQ
What is the clamping voltage of SMCJ6V5A and how is it measured?
The SMCJ6V5A has a maximum clamping voltage (VC) of 11.2 V at 500 A peak pulse current (IPPM), tested using the 10/1000 µs double-exponential waveform per Fig.5 in the datasheet. This value represents the highest voltage seen across the device during a standardized surge event and directly determines the protection margin for downstream components. The SMCJ6V5A maintains this clamping performance across its full operating temperature range.
Is SMCJ6V5A unidirectional or bidirectional, and how can I identify polarity?
The SMCJ6V5A is a unidirectional TVS diode, indicated by the absence of "C" or "CA" suffix and confirmed by its forward voltage specification (VF = 3.5 V @ 100 A). Polarity is marked by a cathode band on the DO-214AB body - the banded end connects to the protected system rail (e.g., 12 V), while the unbanded end connects to ground. Bidirectional variants require explicit "C" or "CA" designation.
Does SMCJ6V5A meet automotive transient immunity standards?
Yes, the SMCJ6V5A is explicitly rated to meet ISO 7637-2 for automotive electrical disturbances, covering Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnection), and Pulse 3a/3b (electrical fast transients). Its 1500 W peak power rating and sub-1.0 ps response ensure robust suppression of load dump and ignition noise without derating in typical under-hood ambient conditions.
What is the maximum steady-state power dissipation for SMCJ6V5A?
The SMCJ6V5A has a steady-state power dissipation (PD) rating of 5 W at TA = 25°C, as specified in the Absolute Maximum Ratings table. This value applies only to continuous DC or low-frequency reverse bias conditions - not transient events. In normal operation, reverse leakage remains below 6.5 µA at 6.5 V, resulting in negligible static power loss (<43 µW).
Can SMCJ6V5A be used in place of SMCJ6.5A?
Yes - SMCJ6V5A and SMCJ6.5A are identical in electrical specifications, package, and marking; "V5" and ".5" denote the same 6.5 V nominal working voltage. Taiwan Semiconductor uses both naming conventions interchangeably in documentation and ordering codes. No design or layout changes are required when substituting between these part numbers.
SMCJ6V5A 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- Current - Peak Pulse (10/1000µs):
- 133.9A
- 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)
SMCJ6V5A FAQ
1.How can I place an order for SMCJ6V5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ6V5A 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 SMCJ6V5A reliable?
The price and inventory of SMCJ6V5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ6V5A is usually 5 days.
3.What payment methods are accepted for SMCJ6V5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ6V5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ6V5A?
SMCJ6V5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ6V5A 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 SMCJ6V5A?
For technical support, including SMCJ6V5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ6V5A requirements.
6.How does Aetrix verify that SMCJ6V5A is sourced from the original manufacturer or authorized distributors?
All SMCJ6V5A 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 SMCJ6V5A meets industry standards.
7.What is the process for return or replacement of SMCJ6V5A?
All SMCJ6V5A units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ6V5A, 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 SMCJ6V5A part is unused and in its original packaging.
Return procedure for SMCJ6V5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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