My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCJ26-E3/57T
- Part No.:
- SMCJ26-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ26-E3/57T.pdf
- Description:
- TVS DIODE 26VWM 46.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,359
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ26-E3/57T from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for robust overvoltage protection of sensitive electronics. It features a 26 V standoff voltage (VWM), 28.9–31.9 V breakdown voltage (VBR) at 1 mA, 42.1 V clamping voltage (VC) at 35.6 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - deployed on power rails and signal lines in automotive ECUs and industrial motor drives.
For engineers reviewing the SMCJ26-E3/57T datasheet, SMCJ26-E3/57T pinout, SMCJ26-E3/57T application, or SMCJ26-E3/57T equivalent, key selection criteria include clamping voltage margin vs. protected IC's absolute maximum rating, thermal derating above 25 °C, unidirectional polarity confirmation for DC-biased lines, and AEC-Q101 qualification status for automotive-grade reliability validation.
Technical Context
The SMCJ26-E3/57T operates as a silicon avalanche diode that enters controlled breakdown when reverse voltage exceeds its VBR threshold, diverting surge energy to ground while limiting voltage across the protected circuit to ≤42.1 V. Its glass-passivated junction ensures stable leakage (<1.0 µA at 26 V) and long-term reliability under repeated transients.
Designed for surface-mount assembly on 8.0 mm × 8.0 mm copper pads per terminal, it delivers 1500 W peak pulse power dissipation with 75 °C/W junction-to-ambient thermal resistance and supports operating junction temperatures from –55 °C to +150 °C - enabling use in under-hood automotive environments and high-temperature industrial enclosures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse working voltage before clamping begins; sets upper limit for normal DC bias operation. |
| VBR min/max | 28.9 V / 31.9 V at 1 mA - Confirmed breakdown range ensures reliable triggering without premature conduction. |
| VC @ IPPM | 42.1 V at 35.6 A - Clamped voltage during 10/1000 µs surge; must stay below protected device's absolute max rating. |
| PPPM | 1500 W - Peak surge power handling capability with standard 10/1000 µs waveform; defines transient energy absorption capacity. |
| ID @ VWM | ≤1.0 µA - Reverse leakage current at rated standoff voltage; low value minimizes standby power loss and false triggering. |
| TJ max | +150 °C - Maximum junction temperature; enables deployment in high-ambient-temperature applications like engine control modules. |
| AEC-Q101 | Qualified - Certified for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock per AEC standard. |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current path / surge return path | Connected to system ground or low-impedance return node during transient events; must be routed with minimal inductance. |
| Cathode | Protected line connection | Connected to the line being protected (e.g., 24 V rail or CAN-H); polarity band identifies this terminal. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable electrical parameters over time and temperature; prevents moisture ingress and oxidation-induced parameter drift. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a), improving clamping fidelity. |
| MSL Level 1 (260 °C peak) | Enables standard lead-free reflow soldering without preconditioning; compatible with automated SMT lines. |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control, body electronics, and ADAS subsystems. |
| RoHS-compliant (E3 suffix) | Meets EU Directive 2011/65/EU; no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE in construction. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs in engine control units (ECUs) against load dump (ISO 16750-2) and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 24 V rail and chassis ground to clamp surges above 42.1 V while maintaining <1 µA leakage during normal operation. Use Value: Prevents latch-up or permanent damage to microcontrollers and power management ICs exposed to up to 1500 W transient energy. | Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA loops) and digital I/O lines of PLC analog input modules from ESD and field-wiring transients. IC Role / Device Role / Timing Role: Mounted directly at connector entry point to shunt fast transients (<1 ns rise time) before reaching precision op-amps or ADC front-ends. Use Value: Maintains signal integrity by limiting clamped voltage to 42.1 V, well below typical 36 V absolute max ratings of industrial-grade signal conditioners. |
| Telecom Line Card Surge Suppression | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding Ethernet PHY interfaces and PoE-powered circuits in enterprise switches from lightning-induced surges on data lines. IC Role / Device Role / Timing Role: Paired with common-mode chokes and gas discharge tubes to form multi-stage protection; handles differential-mode surges up to 1500 W. Use Value: Enables compliance with IEC 61000-4-5 Level 4 (4 kV) testing by limiting voltage seen by PHY ICs to safe levels during 10/1000 µs transients. | Use Scenario: Guarding gate drivers and MCU I/O in smart home appliance motor inverters against back-EMF spikes from brushed DC motors. IC Role / Device Role / Timing Role: Placed across H-bridge high-side FET source and rail to clamp inductive kickback during PWM commutation. Use Value: Extends MOSFET lifetime by preventing avalanche overstress, leveraging 1500 W peak power rating to absorb repetitive 100–500 mJ pulses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ26A-E3/61 | Lower PPPM (400 W), smaller DO-214AC (SMA) package, same VWM/VBR/VC specs | Not suitable for 1500 W surge events; limited to lower-energy transients (e.g., ESD-only zones) | Select only where space constraints prohibit SMCJ footprint and surge energy is ≤400 W. |
| SMCJ26AHE3/57T | Identical electrical specs but AEC-Q101 qualified (HE3 suffix); same DO-214AB package and thermal performance | Required for automotive OEM designs needing full AEC-Q101 documentation and traceability | Choose when automotive qualification is mandatory; otherwise SMCJ26-E3/57T meets commercial/industrial needs. |
Compared with SMAJ26A-E3/61 and SMCJ26AHE3/57T, the SMCJ26-E3/57T provides optimal balance of 1500 W surge capacity, DO-214AB thermal performance, and RoHS compliance - making it preferred for industrial and non-OEM automotive applications where AEC-Q101 is not mandated but high-energy clamping is essential.
Availability
SMCJ26-E3/57T is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface protection, and telecom line card surge suppression requiring stable component supply and consistent parametric performance across production lots.
Supply support for SMCJ26-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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMCJ series belongs to Vishay's TRANSZORB® transient voltage suppressor family, engineered for high-power surge immunity in harsh environments - targeting automotive, industrial, and telecom infrastructure where robustness against ISO 7637, IEC 61000-4-5, and ESD events is critical.
FAQ
What is the clamping voltage of the SMCJ26-E3/57T under a 10/1000 µs surge?
The SMCJ26-E3/57T has a maximum clamping voltage (VC) of 42.1 V at 35.6 A peak pulse current with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's datasheet revision 11-Dec-12. The SMCJ26-E3/57T maintains this clamping performance across its specified operating temperature range, ensuring predictable protection behavior in real-world surge conditions.
Is the SMCJ26-E3/57T suitable for automotive applications?
The SMCJ26-E3/57T is RoHS-compliant and built in an AEC-Q101-qualified process flow, but the E3 suffix denotes commercial-grade qualification. For full AEC-Q101 compliance, the SMCJ26AHE3/57T variant is required. The SMCJ26-E3/57T remains widely used in non-OEM automotive subsystems where robust transient suppression is needed but formal AEC documentation is not mandated.
What is the thermal resistance of the SMCJ26-E3/57T?
The SMCJ26-E3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. Its junction-to-lead resistance (RθJL) is 15 °C/W. These values define thermal derating curves in Figure 2 of the datasheet and must be applied when ambient temperature exceeds 25 °C to ensure TJ stays within the –55 °C to +150 °C operating range.
Does the SMCJ26-E3/57T have polarity marking, and how is it oriented in circuit?
Yes - the SMCJ26-E3/57T is unidirectional and marked with a cathode band on the body. In circuit, the cathode connects to the line being protected (e.g., 24 V rail), and the anode connects to ground. This orientation allows forward conduction only during negative transients on the protected line, making it ideal for DC-biased applications where reverse polarity protection is not required.
What is the maximum leakage current of the SMCJ26-E3/57T at its rated standoff voltage?
The SMCJ26-E3/57T exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 26 V standoff voltage (VWM) and 25 °C ambient temperature. This low leakage ensures minimal impact on system power budget and avoids false triggering in high-impedance sensing circuits. Leakage increases slightly with temperature but remains well below 10 µA up to 125 °C per datasheet characterization.
SMCJ26-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:
- 1
- Bidirectional Channels:
- -
- 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)
SMCJ26-E3/57T FAQ
1.How can I place an order for SMCJ26-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ26-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 SMCJ26-E3/57T reliable?
The price and inventory of SMCJ26-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 SMCJ26-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ26-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ26-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ26-E3/57T?
SMCJ26-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ26-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 SMCJ26-E3/57T?
For technical support, including SMCJ26-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ26-E3/57T requirements.
6.How does Aetrix verify that SMCJ26-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ26-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 SMCJ26-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ26-E3/57T?
All SMCJ26-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ26-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 SMCJ26-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ26-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ26-E3/57T Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
