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Vishay General Semiconductor - Diodes Division SMCJ5.0A-E3/9AT
- Part No.:
- SMCJ5.0A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ5.0A-E3/9AT.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:50,631
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Product details
Overview
SMCJ5.0A-E3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 5.0 V stand-off voltage (VWM), 6.40–7.07 V breakdown voltage (VBR) at 10 mA, 1500 W peak pulse power (PPPM), and clamps transients to ≤9.2 V at 163 A (10/1000 µs waveform), making it suitable for protecting MOSFET gates and microcontroller I/O in automotive body electronics.
For engineers reviewing the SMCJ5.0A-E3/9AT datasheet, SMCJ5.0A-E3/9AT pinout, SMCJ5.0A-E3/9AT application, or SMCJ5.0A-E3/9AT equivalent, key selection criteria include its unidirectional polarity, 1000 µA max reverse leakage at VWM, -55 °C to +150 °C operating junction temperature, RoHS-compliant matte tin-plated leads, and compliance with AEC-Q101 when ordered as HE3 variant.
Technical Context
The SMCJ5.0A-E3/9AT operates as a clamping-type TVS diode using an avalanche breakdown mechanism. Its glass-passivated silicon junction delivers sub-nanosecond response time to ESD and lightning-induced transients, with low incremental surge resistance ensuring minimal voltage overshoot during high-current surges up to 163 A.
It is rated for 1500 W peak pulse power under standardized 10/1000 µs waveform conditions, derated linearly above 25 °C ambient per Fig. 2, and exhibits a positive temperature coefficient of VBR (+0.057 %/°C), enabling stable clamping performance across wide temperature ranges in engine control units and industrial PLCs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 5 V systems. |
| VBR min/max | 6.40 V / 7.07 V at 10 mA - Confirmed breakdown threshold range; ensures reliable turn-on without premature conduction. |
| VC @ IPPM | ≤9.2 V at 163 A - Clamped voltage during full-rated transient; guarantees downstream ICs see <9.2 V under worst-case surge. |
| PPPM | 1500 W - Peak pulse power handling per 10/1000 µs waveform; supports IEC 61000-4-5 Level 4 surge immunity. |
| ID @ VWM | ≤1000 µA - Reverse leakage current at stand-off voltage; low enough to avoid excessive quiescent power loss in battery-powered sensors. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments without thermal derating penalties. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on standard 8 mm × 8 mm copper pads; informs PCB thermal layout requirements. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity marked by cathode band; unidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection point for reverse-biased operation | Connected to protected line (e.g., 5 V rail); conducts during overvoltage to shunt current to ground. |
| Anode (non-banded end) | Reference/ground return path | Typically tied to system ground plane; completes clamping path during transient events. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures long-term reliability and stable VBR over temperature and lifetime, critical for automotive-grade deployments. |
| MSL Level 1 (260 °C peak) | Enables compatibility with standard lead-free reflow profiles without moisture sensitivity concerns. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients, improving protection margin for sensitive logic inputs. |
| RoHS-compliant, halogen-free option available | Meets global environmental compliance mandates (e.g., EU RoHS, JEDEC J-STD-20) without compromising surge performance. |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and power window motor drivers from load dump and inductive switching spikes in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between supply rail and ground, activated only during positive overvoltage events. Use Value: Limits transient voltage to ≤9.2 V, preventing latch-up or gate oxide damage in 5 V tolerant MCU peripherals and driver ICs. | Use Scenario: Safeguarding analog output lines of pressure/temperature sensors connected to PLC analog input modules. IC Role / Device Role / Timing Role: Standoff-mode protector on 4–20 mA loop or 0–10 V signal path, absorbing induced surges from nearby relay switching. Use Value: Maintains signal integrity by clamping transients below sensor IC's absolute maximum rating while adding <1 nF capacitance. |
| USB Power Delivery (PD) Port Protection | DC-DC Converter Input Stage |
Use Scenario: Secondary overvoltage clamp on VBUS line after primary fuse and upstream TVS, guarding against PD negotiation faults or adapter misinsertion. IC Role / Device Role / Timing Role: Fast-response secondary clamp with precise 5.0 V VWM, coordinated with upstream protection to meet USB-IF ESD/surge requirements. Use Value: Adds redundancy to protect USB PD controller ICs rated for 5.5 V absolute maximum, ensuring no excursion exceeds 9.2 V. | Use Scenario: Input rail protection for buck converters powering FPGA core supplies in telecom baseband cards. IC Role / Device Role / Timing Role: Primary transient suppressor on 5 V or 12 V input, placed before EMI filter and converter IC to prevent input stage failure. Use Value: Handles 1500 W surges without degradation, preserving converter uptime in environments with frequent AC line disturbances. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC5.0 | Same VWM (5.0 V), lower PPPM (600 W), smaller SMA package (DO-214AC) | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 compliance | Select when board space is constrained and surge threat level is Class 2 or lower. |
| 1.5KE5.0A | Through-hole TO-218 package, same VWM/VC specs, higher thermal mass but incompatible with SMT assembly | Requires manual or wave-solder process; not viable for fully automated production | Choose only for legacy through-hole designs or prototyping where rework tolerance is prioritized over volume manufacturability. |
Compared with SAC5.0 and 1.5KE5.0A, the SMCJ5.0A-E3/9AT delivers 2.5× higher surge power handling in an SMT-compatible footprint, enabling robust protection in space-constrained automotive and industrial PCBs without sacrificing assembly efficiency or thermal performance.
Availability
SMCJ5.0A-E3/9AT is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, USB power delivery ports, and DC-DC converter input stages requiring stable component supply and AEC-Q101 traceability via compatible variants.
Supply support for SMCJ5.0A-E3/9AT 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive qualification.
The SMCJ series is engineered specifically for high-energy transient suppression in harsh environments, targeting design-in for automotive, industrial, and telecom infrastructure where sustained surge immunity and long-term parametric stability are mandatory.
FAQ
What is the clamping voltage of the SMCJ5.0A-E3/9AT under full-rated surge current?
The SMCJ5.0A-E3/9AT clamps to a maximum of 9.2 V when subjected to its rated peak pulse current of 163 A under the standard 10/1000 µs waveform. This value is measured at the device terminals with specified mounting conditions (0.31" × 0.31" copper pads), and represents the upper limit of voltage seen by downstream circuitry during worst-case transient events. The SMCJ5.0A-E3/9AT maintains this clamping performance across its full operating temperature range due to its controlled avalanche characteristics.
Is the SMCJ5.0A-E3/9AT suitable for automotive applications?
Yes - the SMCJ5.0A-E3/9AT is RoHS-compliant and manufactured to commercial-grade specifications; however, the AEC-Q101 qualified version is designated SMCJ5.0AHE3 (with suffix HE3 or HM3). While the SMCJ5.0A-E3/9AT shares identical electrical and thermal characteristics, only the HE3/HM3 variants undergo the full stress testing required for automotive under-hood use. For non-safety-critical cabin modules or pre-qualification evaluation, the SMCJ5.0A-E3/9AT may be used, but final automotive designs must specify the qualified variant. The SMCJ5.0A-E3/9AT itself is not AEC-Q101 certified.
How does the SMCJ5.0A-E3/9AT differ from bidirectional variants like SMCJ5.0CA?
The SMCJ5.0A-E3/9AT is unidirectional, meaning it conducts only during positive overvoltage events relative to its cathode, with a defined polarity band. In contrast, SMCJ5.0CA is bidirectional and symmetrical, providing clamping for both polarities - essential for AC signal lines or data buses like RS-485. The SMCJ5.0A-E3/9AT has a forward voltage drop (~3.5 V at 100 A) and is optimized for DC rail protection, whereas SMCJ5.0CA lacks a forward conduction path and exhibits matched breakdown in both directions. Their VBR and VC values also differ slightly per datasheet tables.
What is the thermal resistance and how does it affect PCB layout for the SMCJ5.0A-E3/9AT?
The SMCJ5.0A-E3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on minimum recommended 8.0 mm × 8.0 mm copper pads per terminal. This value assumes no additional heatsinking; larger copper areas or internal planes reduce RθJA significantly. To maintain TJ ≤150 °C under repeated surges, designers must ensure adequate copper area and avoid routing heat-sensitive components nearby. The SMCJ5.0A-E3/9AT's RθJL of 15 °C/W indicates efficient conduction into PCB traces, supporting thermal relief strategies without external heatsinks.
Can the SMCJ5.0A-E3/9AT be used in parallel for higher surge current handling?
No - the SMCJ5.0A-E3/9AT is not characterized or recommended for parallel operation. Due to manufacturing tolerances in VBR (6.40–7.07 V), mismatched devices will share current unequally, causing one to dominate conduction and potentially fail prematurely. Surge ratings assume single-device operation under standardized test conditions. For higher energy requirements, select a higher-power TVS (e.g., SMCJ8.0A or SMCJ12A) or implement staged protection with upstream current-limiting elements. The SMCJ5.0A-E3/9AT must be applied as a single, standalone device per protected node.
SMCJ5.0A-E3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- 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):
- 163A
- 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 (SMCJ)
SMCJ5.0A-E3/9AT FAQ
1.How can I place an order for SMCJ5.0A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ5.0A-E3/9AT 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-E3/9AT reliable?
The price and inventory of SMCJ5.0A-E3/9AT 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-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ5.0A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ5.0A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ5.0A-E3/9AT?
SMCJ5.0A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ5.0A-E3/9AT 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-E3/9AT?
For technical support, including SMCJ5.0A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ5.0A-E3/9AT requirements.
6.How does Aetrix verify that SMCJ5.0A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ5.0A-E3/9AT 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-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ5.0A-E3/9AT?
All SMCJ5.0A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ5.0A-E3/9AT, 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-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ5.0A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ5.0A-E3/9AT Tags
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