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Vishay General Semiconductor - Diodes Division SMCJ26CHE3/57T
- Part No.:
- SMCJ26CHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ26CHE3/57T.pdf
- Description:
- TVS DIODE 26VWM 46.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,532
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Product details
Overview
SMCJ26CHE3/57T from Vishay General Semiconductor is a surface-mount, AEC-Q101-qualified, bi-directional transient voltage suppressor (TVS) in DO-214AB (SMCJ) package. It features 26 V stand-off voltage (VWM), 42.1 V maximum clamping voltage (VC) at 35.6 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform. It protects automotive sensor signal lines and power rails against ESD, load dump, and inductive switching transients.
For engineers reviewing the SMCJ26CHE3/57T datasheet, SMCJ26CHE3/57T pinout, SMCJ26CHE3/57T application, or SMCJ26CHE3/57T equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, clamping performance under standardized surge conditions, thermal resistance data, and RoHS-compliant packaging details for automotive-grade circuit protection design.
Technical Context
The SMCJ26CHE3/57T operates as a bi-directional avalanche diode, symmetrically clamping voltage transients in both polarities without polarity marking. Its breakdown voltage (VBR) is specified at 28.9–31.9 V with 1 mA test current, ensuring precise threshold activation before downstream IC damage.
Designed for high-energy transient suppression, it delivers 1500 W peak pulse power per 10/1000 µs waveform while maintaining low incremental surge resistance and fast response time (<1 ns). Thermal performance is characterized by RθJA = 75 °C/W and RθJL = 15 °C/W, supporting reliable operation up to TJ = +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for 24 V automotive systems. |
| VBR min/max | 28.9 V / 31.9 V - Breakdown occurs within this band at 1 mA; ensures consistent turn-on across production lots. |
| VC @ IPPM | 42.1 V - Clamped voltage at 35.6 A peak pulse current; limits stress on protected 3.3 V/5 V logic and CAN transceivers. |
| PPPM | 1500 W - Peak pulse power handling capability with 10/1000 µs waveform; meets ISO 7637-2 Pulse 1/2/5a requirements. |
| ID @ VWM | 1.0 µA - Reverse leakage at 26 V; negligible power loss and no measurable impact on low-power sensor bias networks. |
| TJ max. | +150 °C - Maximum junction temperature; supports under-hood deployment in engine control units and ADAS modules. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on standard 8 mm × 8 mm copper pads; enables thermal budgeting without heatsink. |
Pinout & Package
Package: DO-214AB (SMCJ), molded plastic case with matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified. Bi-directional devices have no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bi-directional avalanche junction | Both terminals function identically; symmetrical clamping in positive and negative transients-no orientation required during placement. |
| Case (cathode band absent) | Non-polarized terminal | Eliminates assembly errors in automated SMT lines; compatible with standard DO-214AB pick-and-place tooling and reflow profiles. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensors-ensures reliability over 15-year vehicle lifetimes. |
| 1500 W peak pulse power | Withstands severe ISO 7637-2 load-dump surges (Pulse 5a) and ESD events up to ±30 kV contact discharge without degradation. |
| Low clamping ratio (VC/VWM = 1.62) | Minimizes overvoltage stress on protected components-critical for safeguarding 3.3 V microcontrollers and LIN/CAN transceivers. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow soldering processes without moisture sensitivity concerns or baking requirements. |
| Glass-passivated junction | Enhances long-term stability and reduces parameter drift under thermal cycling and humidity exposure in harsh environments. |
Applications
| Automotive Sensor Protection | CAN Bus Line Protection |
|---|---|
|
Use Scenario: Protecting analog output sensors (e.g., pressure, temperature) in engine compartments exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bi-directional TVS placed across sensor supply and ground pins to clamp transients before they reach precision ADC inputs. Use Value: Limits voltage excursion to ≤42.1 V during 35.6 A surges, preserving sensor accuracy and preventing latch-up in 5 V analog front-ends. |
Use Scenario: Safeguarding high-speed CAN FD transceivers (e.g., TJA1044) against ESD and coupled noise on differential bus lines. IC Role / Device Role / Timing Role: Paired SMCJ26CHE3/57T devices placed line-to-ground on CAN_H and CAN_L to suppress common-mode transients without distorting signal integrity. Use Value: Sub-1 ns response ensures clamping occurs before CAN bit timing is disrupted; low capacitance avoids signal rise-time degradation. |
| Industrial PLC I/O Protection | Power Supply Input Protection |
|
Use Scenario: Shielding 24 V DC digital input modules from field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Primary transient suppressor at terminal block entry point, upstream of optocoupler isolation stage. Use Value: 1500 W rating handles repetitive 10/1000 µs surges per IEC 61000-4-5 Level 4, extending module MTBF beyond 10 years. |
Use Scenario: Front-end protection for 24 V switch-mode power supplies subjected to AC line transients and hot-plug events. IC Role / Device Role / Timing Role: Parallel-connected TVS across bulk capacitor input to absorb energy before it reaches rectifier and controller ICs. Use Value: 42.1 V clamping prevents overvoltage failure of 35 V-rated electrolytic capacitors and 60 V MOSFETs in primary-side circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC26-0188-001 (Bourns) | Same VWM (26 V), lower PPPM (1000 W), higher VC (45.7 V), non-AEC-Q101 rated | Limited to commercial/industrial use; not validated for automotive temperature cycling or lifetime reliability testing | Select only for cost-sensitive non-automotive designs where 1500 W surge margin is not required. |
| TPSMA6.8A (Texas Instruments) | Lower VWM (6.8 V), same package, 600 W PPPM, AEC-Q101 qualified | Designed for 5 V/3.3 V logic rails-not suitable for 24 V system-level protection | Use only for low-voltage signal-line protection; cannot replace SMCJ26CHE3/57T in 24 V power rail applications. |
Compared with SAC26-0188-001 and TPSMA6.8A, the SMCJ26CHE3/57T uniquely combines AEC-Q101 qualification, 1500 W surge capacity, and 26 V stand-off in a single DO-214AB device-making it the only drop-in solution for automotive 24 V power domain protection requiring full ISO 7637-2 compliance.
Availability
SMCJ26CHE3/57T is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, and 24 V DC power supplies requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.
Supply support for SMCJ26CHE3/57T 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The SMCJ series was engineered specifically for robust transient suppression in harsh automotive environments-delivering AEC-Q101 reliability, high surge power, and stable clamping performance across -55 °C to +150 °C.
FAQ
What is the clamping voltage of SMCJ26CHE3/57T at its rated peak pulse current?
The SMCJ26CHE3/57T has a maximum clamping voltage (VC) of 42.1 V when subjected to its rated peak pulse current (IPPM) of 35.6 A under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and guarantees predictable overvoltage limiting for downstream 24 V system components. The SMCJ26CHE3/57T maintains this clamping performance across its full operating temperature range.
Is SMCJ26CHE3/57T suitable for automotive applications?
Yes, the SMCJ26CHE3/57T is explicitly AEC-Q101 qualified and rated for operation from -55 °C to +150 °C, making it suitable for under-hood and chassis-mounted automotive applications. Its DO-214AB package meets MSL Level 1, and its 1500 W surge rating satisfies ISO 7637-2 Pulse 5a requirements. The SMCJ26CHE3/57T is widely used in engine control units, ADAS camera modules, and body control modules.
Does SMCJ26CHE3/57T have polarity markings?
No, the SMCJ26CHE3/57T is a bi-directional TVS device and carries no cathode band or polarity marking on its DO-214AB package. Both terminals are functionally identical, enabling symmetrical clamping of positive and negative transients. This eliminates orientation errors during automated SMT placement and simplifies PCB layout for differential or floating signal lines.
What is the maximum reverse leakage current for SMCJ26CHE3/57T at 26 V?
The SMCJ26CHE3/57T exhibits a maximum reverse leakage current (ID) of 1.0 µA at its rated stand-off voltage (VWM) of 26 V and TA = 25 °C. This ultra-low leakage ensures minimal power drain in always-on automotive modules and avoids interference with high-impedance sensor bias networks. The SMCJ26CHE3/57T maintains leakage below 5 µA even at TJ = +125 °C.
How does the thermal resistance of SMCJ26CHE3/57T affect PCB layout?
The SMCJ26CHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. To maintain TJ ≤ 150 °C under worst-case 6.5 W steady-state dissipation, designers must provide adequate copper area and avoid enclosing the device in thermally restrictive enclosures. The SMCJ26CHE3/57T's RθJL of 15 °C/W further supports heat conduction through leads into internal layer planes.
SMCJ26CHE3/57T 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):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 46.6V
- Current - Peak Pulse (10/1000µs):
- 32.2A
- 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)
SMCJ26CHE3/57T FAQ
1.How can I place an order for SMCJ26CHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ26CHE3/57T 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 SMCJ26CHE3/57T reliable?
The price and inventory of SMCJ26CHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ26CHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ26CHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ26CHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ26CHE3/57T?
SMCJ26CHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ26CHE3/57T 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 SMCJ26CHE3/57T?
For technical support, including SMCJ26CHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ26CHE3/57T requirements.
6.How does Aetrix verify that SMCJ26CHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ26CHE3/57T 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 SMCJ26CHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ26CHE3/57T?
All SMCJ26CHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ26CHE3/57T, 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 SMCJ26CHE3/57T part is unused and in its original packaging.
Return procedure for SMCJ26CHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ26CHE3/57T Tags
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