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Vishay General Semiconductor - Diodes Division SMCJ26C-E3/57T
- Part No.:
- SMCJ26C-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ26C-E3/57T.pdf
- Description:
- TVS DIODE 26VWM 46.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,469
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Product details
Overview
SMCJ26C-E3/57T from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for robust overvoltage protection on signal and power lines. It features a 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 dissipation (PPPM) with 10/1000 µs waveform - ideal for automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMCJ26C-E3/57T datasheet, SMCJ26C-E3/57T pinout, SMCJ26C-E3/57T application, or SMCJ26C-E3/57T equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, UL 497B recognition, low incremental surge resistance, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ26C-E3/57T operates as a silicon avalanche diode with symmetrical breakdown behavior in both polarities, enabling protection of AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and repeatable clamping performance across temperature (-55 °C to +150 °C).
It delivers 1500 W transient power handling per 10/1000 µs waveform under standardized test conditions, with thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-lead), supporting reliable operation in high-density PCB layouts when mounted per recommended pad dimensions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 28.9 V / 31.9 V at 1.0 mA - verified breakdown threshold range for bi-directional conduction |
| VC @ IPPM | 42.1 V at 35.6 A - clamped voltage during full-rated 1500 W transient event |
| PPPM | 1500 W - peak transient energy absorption capacity per 10/1000 µs waveform |
| ID @ VWM | ≤1.0 µA - ultra-low leakage ensuring minimal impact on signal integrity |
| TJ max | +150 °C - maximum junction temperature enabling use in under-hood automotive environments |
| MSL Level | Level 1 (J-STD-020) - supports standard reflow without moisture sensitivity concerns |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, low-profile, RoHS-compliant matte tin-plated leads. Bi-directional construction has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Bi-directional terminals conduct equally in either direction during overvoltage events; no cathode band marking |
| Case (exposed metal tab) | Thermal path | Integral heat-sinking surface requiring minimum 8.0 mm × 8.0 mm copper pad per terminal for rated PPPM |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress |
| UL 497B recognized | Approved for telecom and industrial signal line protection per Underwriters Laboratories standards |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term parameter stability under repeated surge stress |
| Low incremental surge resistance | Enables tighter clamping (VC/VBR ratio = 1.47) versus competing TVS devices |
| MSL Level 1 compliance | Eliminates bake-out requirement prior to reflow soldering |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Standby clamping device that remains non-conductive until transient exceeds 26 V, then shunts surge current to ground within nanoseconds. Use Value: Prevents damage to downstream ASICs and microcontrollers by limiting voltage to ≤42.1 V during 1500 W transients per ISO 7637-2 Pulse 5a. | Use Scenario: Safeguarding digital input modules in programmable logic controllers against field-wiring induced surges from relay coils and motor drives. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed between field-side signal line and controller-side interface IC. Use Value: Maintains signal fidelity during normal operation (≤1.0 µA leakage) while responding in <1 ns to fast-rising transients up to 1 kV. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Protecting Ethernet PHYs and DSL line drivers from lightning-induced surges on unshielded twisted-pair cabling. IC Role / Device Role / Timing Role: Primary front-end TVS on differential data lines, coordinated with common-mode chokes and secondary clamping. Use Value: Meets ITU-T K.21 basic protection level with 1500 W rating and UL 497B certification for telecom infrastructure. | Use Scenario: Secondary overvoltage protection on DC input rails of USB-C PD adapters and wireless charging base stations. IC Role / Device Role / Timing Role: Fast-response clamp after primary MOV/fuse stage, absorbing residual ringwave energy. Use Value: Enables compact design via DO-214AB footprint and eliminates need for additional series impedance due to low clamping ratio. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ26CA-E3/61 | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher VC (45.7 V at 11.8 A) | Suitable for space-constrained consumer electronics but not automotive-grade surge levels | Select when board area is critical and peak surge energy is ≤400 W |
| 1.5KE27CA | Through-hole TO-218 package, same VWM/VC specs, higher thermal mass but incompatible with SMT assembly | Used in legacy industrial power supplies where manual assembly or high-reliability thermal anchoring is required | Select only if through-hole mounting and higher sustained power derating are needed |
Compared with SMAJ26CA-E3/61 and 1.5KE27CA, the SMCJ26C-E3/57T uniquely balances AEC-Q101 qualification, 1500 W surge capacity, and SMT-compatible DO-214AB packaging - making it optimal for new automotive and industrial designs requiring validated reliability and high-energy clamping in automated production.
Availability
SMCJ26C-E3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter designs requiring stable component supply and full traceability.
Supply support for SMCJ26C-E3/57T 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMCJ26C-E3/57T belongs to Vishay's TRANSZORB® family of transient voltage suppressors, engineered specifically for high-energy, fast-response overvoltage protection in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What does the "C" suffix indicate in SMCJ26C-E3/57T?
The "C" in SMCJ26C-E3/57T denotes bi-directional functionality - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike uni-directional variants (e.g., SMCJ26A), the SMCJ26C-E3/57T has no polarity marking and clamps equally in either direction, making it suitable for AC-coupled or floating signal lines. This is confirmed in Vishay's datasheet section "Devices for Bi-Direction Applications" and electrical tables listing VBR min/max for bi-directional types.
Is SMCJ26C-E3/57T qualified for automotive applications?
Yes, the SMCJ26C-E3/57T is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet under "MECHANICAL DATA" and "RATINGS AND CHARACTERISTICS CURVES". This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge - validating its suitability for under-hood and chassis-mounted automotive electronics such as body control modules and ADAS sensor interfaces.
What is the maximum clamping voltage of SMCJ26C-E3/57T and under what test condition?
The maximum clamping voltage (VC) of the SMCJ26C-E3/57T is 42.1 V, measured at a peak pulse current (IPPM) of 35.6 A using the standardized 10/1000 µs double-exponential waveform. This value is specified in the "ELECTRICAL CHARACTERISTICS" table on page 2 of the Vishay datasheet (Document Number: 88394) and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Does SMCJ26C-E3/57T require special PCB layout considerations?
Yes - the SMCJ26C-E3/57T must be mounted on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve its rated 1500 W peak pulse power dissipation. This requirement is documented in the "MAXIMUM RATINGS" note (2) and "MECHANICAL DATA" section. Smaller pads will cause thermal derating and reduced surge capability, potentially leading to premature failure during repetitive transients.
How does the E3/57T suffix affect the SMCJ26C-E3/57T specification?
The "E3" suffix indicates RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting J-STD-002 and JESD 22-B102 solderability standards; "57T" specifies packaging in 7-inch plastic tape-and-reel format with 850 units per reel. These markings do not alter electrical or thermal specifications - they denote compliance status and logistics configuration, as defined in the "ORDERING INFORMATION" section of the Vishay datasheet.
SMCJ26C-E3/57T 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ26C-E3/57T FAQ
1.How can I place an order for SMCJ26C-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ26C-E3/57T 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 SMCJ26C-E3/57T reliable?
The price and inventory of SMCJ26C-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ26C-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ26C-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ26C-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ26C-E3/57T?
SMCJ26C-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ26C-E3/57T 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 SMCJ26C-E3/57T?
For technical support, including SMCJ26C-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ26C-E3/57T requirements.
6.How does Aetrix verify that SMCJ26C-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ26C-E3/57T 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 SMCJ26C-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ26C-E3/57T?
All SMCJ26C-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ26C-E3/57T, 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 SMCJ26C-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ26C-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ26C-E3/57T Tags
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