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Vishay General Semiconductor - Diodes Division SMCJ75CHE3/57T
- Part No.:
- SMCJ75CHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ75CHE3/57T.pdf
- Description:
- TVS DIODE 75VWM 134VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,054
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Product details
Overview
SMCJ75CHE3/57T from Vishay is a unidirectional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for high-energy surge protection with 75 V standoff voltage, 83.3–92.1 V breakdown range at 1 mA, 12.4 A peak pulse current (10/1000 µs), 121 V clamping voltage, and 1500 W peak pulse power dissipation. It is AEC-Q101 qualified and used to protect automotive power rails and industrial DC inputs against lightning-induced transients and load dump.
For engineers reviewing the SMCJ75CHE3/57T datasheet, SMCJ75CHE3/57T pinout, SMCJ75CHE3/57T application, or SMCJ75CHE3/57T equivalent, key selection criteria include clamping voltage vs. protected IC's absolute maximum rating, thermal resistance (RθJA = 75 °C/W), unidirectional polarity marking, RoHS-compliant matte tin plating, and J-STD-020 MSL Level 1 reflow compatibility.
Technical Context
The SMCJ75CHE3/57T operates as a silicon avalanche diode that enters controlled breakdown above its reverse standoff voltage (VWM = 75 V), limiting transient overvoltage to ≤121 V at 12.4 A. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1 ns), critical for safeguarding MOSFET gates and microcontroller I/O lines.
Thermally, it features RθJL = 15 °C/W (junction-to-lead) and requires minimum 8.0 mm × 8.0 mm copper pads per terminal for rated 1500 W pulse handling. The HE3 suffix confirms AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, making it suitable for under-hood automotive environments up to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - Maximum continuous reverse operating voltage before clamping begins; sets upper limit for protected circuit's nominal DC rail. |
| VBR min/max | 83.3 V / 92.1 V at 1 mA - Confirmed breakdown threshold range; ensures reliable turn-on without premature conduction. |
| VC @ IPPM | 121 V - Clamped voltage during 12.4 A 10/1000 µs surge; must be below protected device's absolute max rating. |
| PPPM | 1500 W - Peak pulse power handling capability; defines maximum transient energy absorption per event. |
| IPPM | 12.4 A - Peak surge current supported with 10/1000 µs waveform; determines PCB trace and fuse sizing. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in engine bay or industrial enclosures without derating. |
| RθJA | 75 °C/W - Thermal resistance to ambient on standard pad layout; informs heatsinking requirements for repetitive surges. |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, low-profile case with molded UL 94 V-0 compound. Cathode identified by band at one end; leads are matte tin-plated and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path (for uni-directional operation) | Connected to ground or low-side return; carries surge current to reference plane during clamping. |
| Cathode (banded end) | Reverse-biased terminal during normal operation | Connected to protected line (e.g., 12 V battery rail); initiates avalanche when VIN exceeds VWM. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood use including temperature cycling, humidity, and mechanical shock per stress test plan. |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage (<1.0 µA) across -55 °C to +150 °C operating range. |
| MSL Level 1 (260 °C peak) | Enables single-reflow assembly without moisture sensitivity concerns; no baking required prior to SMT placement. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 5a), improving protection margin. |
| 1500 W peak pulse power | Supports compliance with IEC 61000-4-5 Level 4 (4 kV line-earth) when properly mounted on 8 mm × 8 mm copper pads. |
Applications
| Automotive Power Rail Protection | Industrial DC Input Surge Suppression |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump transients (up to 60 V, 400 ms) and alternator switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and ground, clamping surges within nanoseconds. Use Value: Limits voltage to ≤121 V during 12.4 A transients, preventing damage to downstream PMICs and CAN transceivers rated for 40 V abs max. | Use Scenario: Safeguarding programmable logic controller (PLC) 24 V DC input terminals against induced lightning surges in factory wiring. IC Role / Device Role / Timing Role: Primary front-end clamp on field-side input, coordinated with series impedance and secondary filtering. Use Value: Absorbs 1500 W pulses per IEC 61000-4-5, enabling compliance with EN 61000-6-2 immunity requirements without oversized MOVs. |
| Motor Drive Gate Protection | Telecom Power Interface |
Use Scenario: Shielding high-side N-channel MOSFET gates from Miller-induced voltage spikes during fast switching in BLDC inverters. IC Role / Device Role / Timing Role: Localized TVS across gate-source, triggered only during overvoltage events exceeding 75 V. Use Value: Fast <1 ns response prevents gate oxide rupture while maintaining low capacitance (<100 pF at 0 V), avoiding switching delay. | Use Scenario: Protecting PoE-powered device DC inputs (e.g., IP cameras) from surges coupled via Ethernet cables or AC adapters. IC Role / Device Role / Timing Role: First-stage suppression on 48 V input rail, upstream of DC/DC converter and hot-swap controller. Use Value: Withstands repeated 10/1000 µs surges up to 12.4 A, extending system lifetime in outdoor telecom cabinets exposed to ESD and lightning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ75A-E3/52T | Lower PPPM (400 W), smaller DO-214AC (SMA) package, same VWM/VC specs but reduced surge margin. | Suitable for space-constrained consumer electronics with lower surge threat profiles (e.g., USB-C PD adapters). | Select SMCJ75CHE3/57T when 1500 W pulse handling and AEC-Q101 qualification are mandatory. |
| 1.5KE75A | Through-hole TO-218 package, higher RθJA (~50 °C/W), same electrical specs but incompatible with automated SMT lines. | Used in legacy industrial power supplies where board real estate allows axial/through-hole mounting. | Choose SMCJ75CHE3/57T for surface-mount production, thermal performance on PCB, and automotive-grade reliability. |
Compared with SMAJ75A-E3/52T and 1.5KE75A, the SMCJ75CHE3/57T delivers 3.75× higher peak pulse power in an AEC-Q101-qualified SMT package, enabling robust protection in automotive and high-reliability industrial designs without layout or process changes.
Availability
SMCJ75CHE3/57T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, motor drive gate circuits, and telecom power interfaces requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ75CHE3/57T 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, efficiency, and automotive-grade qualification.
The SMCJ series was developed specifically for high-power transient suppression in harsh environments, targeting automotive power distribution, industrial automation, and infrastructure equipment where failure resilience is critical.
FAQ
What is the clamping voltage of the SMCJ75CHE3/57T at its rated peak pulse current?
The SMCJ75CHE3/57T has a maximum clamping voltage (VC) of 121 V when subjected to its rated 12.4 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on the protected circuit during surge events. Designers must ensure this clamping level remains below the absolute maximum voltage rating of downstream components. The SMCJ75CHE3/57T maintains this performance across its full operating temperature range.
Is the SMCJ75CHE3/57T suitable for automotive applications?
Yes, the SMCJ75CHE3/57T is explicitly AEC-Q101 qualified, with testing covering temperature cycling, humidity, mechanical shock, and high-temperature operating life. Its DO-214AB package, matte tin-plated leads, and JESD 201 Class 2 whisker resistance meet automotive manufacturing and under-hood environmental requirements. The SMCJ75CHE3/57T is routinely deployed in engine control modules, body control units, and ADAS power supplies where sustained +125 °C ambient and transient immunity are mandatory.
How does the HE3 suffix differ from the E3 suffix in SMCJ75CHE3/57T?
The HE3 suffix in SMCJ75CHE3/57T indicates AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, whereas E3 denotes commercial-grade RoHS compliance only. Both share identical electrical specifications and DO-214AB packaging, but HE3 parts undergo additional stress testing for automotive reliability. The SMCJ75CHE3/57T is therefore certified for mission-critical automotive use, while SMCJ75AE3/57T is intended for industrial or consumer applications where AEC-Q101 is not required.
What is the thermal resistance of the SMCJ75CHE3/57T, and how does it affect layout?
The SMCJ75CHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the minimum recommended 8.0 mm × 8.0 mm copper pads per terminal. This value directly impacts sustained surge capability: inadequate copper area increases junction temperature, reducing safe repetition rate. For designs expecting frequent transients, increasing pad size or adding internal ground planes lowers RθJA, preserving the SMCJ75CHE3/57T's 1500 W rating across thermal cycles.
Does the SMCJ75CHE3/57T have polarity marking, and how is it oriented on the PCB?
Yes, the SMCJ75CHE3/57T is unidirectional and features a cathode band at one end of the DO-214AB package - this band must be aligned toward the protected line (e.g., 12 V rail), while the unmarked end connects to ground. Incorrect orientation renders the device non-functional for reverse-transient suppression. The SMCJ75CHE3/57T's polarity marking is laser-etched and visible under standard AOI inspection, ensuring correct automated placement during SMT assembly.
SMCJ75CHE3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 75V
- Voltage - Breakdown (Min):
- 83.3V
- Voltage - Clamping (Max) @ Ipp:
- 134V
- Current - Peak Pulse (10/1000µs):
- 11.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ75CHE3/57T FAQ
1.How can I place an order for SMCJ75CHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ75CHE3/57T 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 SMCJ75CHE3/57T reliable?
The price and inventory of SMCJ75CHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ75CHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ75CHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ75CHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ75CHE3/57T?
SMCJ75CHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ75CHE3/57T 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 SMCJ75CHE3/57T?
For technical support, including SMCJ75CHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ75CHE3/57T requirements.
6.How does Aetrix verify that SMCJ75CHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ75CHE3/57T 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 SMCJ75CHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ75CHE3/57T?
All SMCJ75CHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ75CHE3/57T, 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 SMCJ75CHE3/57T part is unused and in its original packaging.
Return procedure for SMCJ75CHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ75CHE3/57T Tags
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