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Taiwan Semiconductor Corporation SMCJ5.0A
- Part No.:
- SMCJ5.0A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ5.0A.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
SMCJ5.0A from Taiwan Semiconductor is a unidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 6.4–7.0V breakdown voltage (VBR), 10V working stand-off voltage (VWM), and 9.2V maximum clamping voltage (VC) at 1000A peak pulse current - designed for automotive load-dump and inductive switching surge protection in power supply rails and I/O interfaces.
For engineers reviewing the SMCJ5.0A datasheet, SMCJ5.0A pinout, SMCJ5.0A application, or SMCJ5.0A equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD, unidirectional polarity marking, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and thermal derating above 25°C ambient.
Technical Context
The SMCJ5.0A operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 6.4–7.0V breakdown threshold, clamping transients to ≤9.2V within <1.0ps response time. It sustains 1500W peak pulse power (10/1000μs waveform) and exhibits <5μA reverse leakage at 10V.
Its DO-214AB (SMC) package provides 55°C/W junction-to-ambient thermal resistance and supports automated placement with matte tin-plated leads compliant to J-STD-002. Polarity is marked by cathode band; bidirectional variants use "C" or "CA" suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT=10mA | 6.4–7.0V - defines minimum voltage at which avalanche conduction begins; ensures reliable turn-on before protected circuit exceeds safe stress limits |
| VWM | 10V - maximum continuous reverse operating voltage; must exceed system nominal rail (e.g., 5V logic + margin) |
| VC @ IPPM=1000A | 9.2V - clamped voltage during 10/1000μs surge; determines upper bound of voltage seen by downstream ICs |
| PPK | 1500W - peak pulse power handling per single 10/1000μs event; defines transient energy absorption capability |
| IR @ VWM | <5μA - reverse leakage at stand-off voltage; ensures minimal quiescent power loss and signal integrity in high-impedance circuits |
| TJ max | 150°C - maximum junction temperature; sets thermal design limit for PCB copper area and airflow requirements |
Pinout & Package
DO-214AB (SMC) surface-mount package: molded epoxy case rated UL 94V-0, matte tin-plated leads, cathode indicated by band on one end. Weight ≈0.210g. Moisture sensitivity level 1 (J-STD-020).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or low-side return path; carries surge current during clamping |
| Cathode (marked) | Reverse-biased input terminal | Connected to protected line (e.g., 5V rail); avalanche initiates here when VREV > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Validated for automotive electrical system transients including battery disconnect, alternator load dump, and inductive switch-off |
| Fast response time <1.0ps | Clamps ESD and fast-rising transients before sensitive CMOS inputs reach destructive voltage thresholds |
| RoHS & halogen-free (IEC 61249-2-21) | Meets global environmental compliance requirements for industrial and automotive manufacturing |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 5V microcontroller power input against load-dump surges in 12V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 5V rail and chassis ground to clamp transients exceeding 10V. Use Value: Limits voltage to ≤9.2V during 1000A pulses, preventing latch-up or gate oxide damage in MCU power pins. | Use Scenario: Safeguarding analog sensor outputs (e.g., 4–20mA loop transmitters) from EFT bursts in factory automation. IC Role / Device Role / Timing Role: TVS mounted across sensor output and local ground to absorb 5kHz burst noise per IEC 61000-4-4. Use Value: Sub-10V clamping preserves signal integrity and avoids false triggering in precision ADC front-ends. |
| LED Driver Input Protection | USB Port VBUS Line Protection |
Use Scenario: Shielding constant-current LED driver ICs from inductive kickback when driving solenoid-based dimming circuits. IC Role / Device Role / Timing Role: SMCJ5.0A placed across driver input capacitor to shunt flyback energy from relay coils. Use Value: 1500W peak power rating absorbs multi-millisecond inductive spikes without degradation. | Use Scenario: Adding secondary overvoltage protection on USB 2.0 VBUS line downstream of primary DC-DC converter. IC Role / Device Role / Timing Role: Unidirectional TVS connected between VBUS and GND to clamp hot-swap or adapter fault events. Use Value: 9.2V clamping ensures USB PHY ICs (rated to 6.5V abs max) remain within safe operating area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0A | 600W peak power, SMB package (smaller footprint, higher RθJA = 75°C/W) | Lower energy handling; suitable only for lighter-duty ESD/EFT, not load-dump | Select SMCJ5.0A when 1500W surge immunity per IEC 61000-4-5 or ISO 7637-2 is required |
| SMCJ5.0 | Same package and VBR/VC, but higher VC = 9.6V and wider VBR range (6.4–7.3V) | Looser parametric control; less precise clamping for tight-margin 5V systems | Choose SMCJ5.0A for tighter VBR tolerance (6.4–7.0V) and lower VC (9.2V) to maximize safety margin |
Compared with SMBJ5.0A, SMCJ5.0A delivers 2.5× higher surge energy capacity and better thermal performance; versus SMCJ5.0, it offers tighter VBR distribution and 0.4V lower clamping - critical for protecting modern 5V logic with narrow absolute maximum ratings.
Availability
SMCJ5.0A is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, LED lighting drivers, and USB power rail protection requiring stable component supply and full ISO 7637-2 compliance.
Supply support for SMCJ5.0A 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 belongs to TSC's high-power transient suppression product line, engineered specifically for automotive and industrial environments where robustness against load-dump, inductive switching, and EFT events is mandatory.
FAQ
What is the clamping voltage of SMCJ5.0A at 1000A peak pulse current?
The SMCJ5.0A has a maximum clamping voltage (VC) of 9.2V at 1000A peak pulse current (10/1000μs waveform). This value is guaranteed per the manufacturer's electrical specifications table and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The SMCJ5.0A achieves this with sub-1.0ps response time and glass-passivated junction stability.
Is SMCJ5.0A unidirectional or bidirectional?
SMCJ5.0A is a unidirectional TVS diode, indicated by the absence of "C" or "CA" suffix. Its cathode is marked by a band on the DO-214AB (SMC) package body. It conducts only during reverse overvoltage conditions - forward conduction is limited to 3.5V at 100A per datasheet - making it suitable for DC rail protection where polarity is fixed.
Does SMCJ5.0A meet automotive transient standards?
Yes, SMCJ5.0A meets ISO 7637-2 requirements for Pulse 1 (inductive load disconnect), Pulse 2a (sudden load removal), Pulse 2b (supply interruption), Pulse 3a/3b (switching noise), as explicitly stated in its features list. Its 1500W peak power rating and 9.2V clamping enable compliance with these test waveforms without derating at 25°C ambient.
What is the working stand-off voltage (VWM) of SMCJ5.0A?
The working stand-off voltage (VWM) of SMCJ5.0A is 10V - the maximum DC or continuous reverse voltage the device can withstand without entering avalanche conduction. This allows safe operation on 5V systems with ≥100% margin and ensures negligible leakage (<5μA) during normal operation, preserving signal integrity and power efficiency.
How does SMCJ5.0A differ from SMCJ5.0?
SMCJ5.0A differs from SMCJ5.0 in tighter parameter control: its breakdown voltage range is 6.4–7.0V (vs. 6.4–7.3V), and its maximum clamping voltage is 9.2V (vs. 9.6V). Both share the same DO-214AB package and 1500W rating, but SMCJ5.0A provides improved precision for applications demanding stricter voltage margins, such as modern 5V logic ICs with narrow absolute maximum ratings.
SMCJ5.0A 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 171A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ5.0A FAQ
1.How can I place an order for SMCJ5.0A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ5.0A 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 SMCJ5.0A reliable?
The price and inventory of SMCJ5.0A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ5.0A is usually 5 days.
3.What payment methods are accepted for SMCJ5.0A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ5.0A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ5.0A?
SMCJ5.0A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ5.0A 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 SMCJ5.0A?
For technical support, including SMCJ5.0A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ5.0A requirements.
6.How does Aetrix verify that SMCJ5.0A is sourced from the original manufacturer or authorized distributors?
All SMCJ5.0A 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 SMCJ5.0A meets industry standards.
7.What is the process for return or replacement of SMCJ5.0A?
All SMCJ5.0A units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ5.0A, 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 SMCJ5.0A part is unused and in its original packaging.
Return procedure for SMCJ5.0A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ5.0A Tags
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