My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCJ11A-E3/57T
- Part No.:
- SMCJ11A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ11A-E3/57T.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,166
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ11A-E3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 11 V standoff voltage (VWM), 12.2–13.5 V breakdown voltage (VBR) at 1 mA, 18.2 V clamping voltage (VC) at 82.4 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with a 10/1000 µs waveform - deployed to safeguard MOSFETs, ICs, and sensor interfaces against inductive switching transients and ESD in automotive and industrial systems.
For engineers reviewing the SMCJ11A-E3/57T datasheet, SMCJ11A-E3/57T pinout, SMCJ11A-E3/57T application, or SMCJ11A-E3/57T equivalent, this page delivers verified electrical parameters, package mapping to DO-214AB (SMC), polarity marking convention, thermal resistance (RθJA = 75 °C/W), and direct alternatives qualified for similar transient suppression roles in 12 V rail and low-voltage interface protection.
Technical Context
The SMCJ11A-E3/57T operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its specified breakdown range (12.2–13.5 V). Its glass-passivated junction ensures stable leakage (<5 µA at 11 V) and fast response time (<1 ns), enabling effective suppression of fast-rising transients such as EFT and lightning-induced surges.
Thermally, it uses a DO-214AB package with matte tin-plated leads solderable per J-STD-002, rated for TJ = –55 to +150 °C, and derates linearly above 25 °C per Figure 2 - requiring PCB copper pad area (8.0 mm × 8.0 mm per terminal) to sustain full 1500 W pulse capability without exceeding junction limits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - maximum continuous reverse operating voltage before clamping begins; sets upper limit for 12 V rail protection. |
| VBR min/max | 12.2 V / 13.5 V at IT = 1 mA - defines reliable avalanche initiation window; ensures consistent turn-on across temperature and unit variation. |
| VC @ IPPM | 18.2 V at 82.4 A - clamped voltage during 10/1000 µs surge; determines maximum stress imposed on downstream circuitry. |
| PPPM | 1500 W - peak transient energy handling capacity; supports high-energy surges common in automotive load-dump and industrial motor switching. |
| ID @ VWM | ≤5 µA - reverse leakage at rated standoff; critical for low-power sensor and battery-backed circuits where standby current must be minimized. |
| RθJA | 75 °C/W - junction-to-ambient thermal resistance; requires minimum 8.0 mm × 8.0 mm copper pads to maintain safe operation at full power. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads. Polarity indicated by cathode band; anode and cathode terminals are axially aligned along the body axis.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased terminal | Connected to protected line; conducts during overvoltage to shunt current to ground or lower-potential rail. |
| Anode (unmarked end) | Reference/return terminal | Typically tied to system ground or common return path; completes clamping loop during transient events. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables single-device protection against IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges on 12 V lines without external series impedance. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving margin between VC and IC absolute maximum ratings. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without preconditioning; eliminates moisture-related popcorning risk. |
| AEC-Q101 qualification option | HE3 suffix variants available for automotive-grade reliability; SMCJ11A-E3/57T is commercial-grade but shares identical die and construction. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure in industrial environments. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply inputs of ECUs, body control modules, and lighting drivers against ISO 7637-2 pulse 1 (inductive switch-off) and pulse 2a (load dump). IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor, clamping transients before they reach DC/DC regulators and microcontrollers. Use Value: Limits peak voltage to ≤18.2 V during 82.4 A surges, preserving regulator input rating and preventing latch-up in downstream logic. |
Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA transmitters) and digital I/O (CAN, LIN) of PLC analog modules exposed to field wiring transients. IC Role / Device Role / Timing Role: TVS mounted at connector entry point, shunting induced surges from long cables directly to chassis ground before signal conditioning circuitry. Use Value: Sub-1 ns response and <5 µA leakage preserve signal integrity and measurement accuracy while surviving repeated 1 kV EFT bursts. |
| Consumer Power Adapter Input | Telecom Line Card Surge Protection |
|
Use Scenario: Secondary-side overvoltage clamp in AC/DC adapters and USB PD chargers, protecting synchronous rectifiers and output capacitors from flyback spikes. IC Role / Device Role / Timing Role: Unidirectional suppressor placed across +VOUT and GND, activated only during abnormal output overvoltage conditions. Use Value: 11 V VWM aligns with typical 12 V output rails; 18.2 V VC prevents damage to 20 V-rated MOSFETs and polymer capacitors. |
Use Scenario: Primary protection on telecom line cards handling T1/E1, xDSL, or POTS interfaces subject to lightning-induced surges per GR-1089-CORE. IC Role / Device Role / Timing Role: First-stage TVS in hybrid protection circuit, absorbing bulk surge energy ahead of GDT or MOV secondary stages. Use Value: 1500 W PPPM and DO-214AB thermal mass enable >100 surge events at 10/1000 µs without degradation, meeting Telcordia reliability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC11A-TB-E3/57T | Same VWM (11 V), lower PPPM (600 W), higher VC (19.9 V at 30 A), smaller SOD-123FL package | Lower energy handling; suited for space-constrained, low-surge environments (e.g., portable electronics), not automotive load-dump | Select when board space is critical and surge threat level is limited to IEC 61000-4-2 contact discharge only. |
| 1.5SMC11A | Identical electrical specs (VWM = 11 V, VBR = 12.2–13.5 V, VC = 18.2 V), same DO-214AB package, but non-RoHS legacy variant | No AEC-Q101 or MSL Level 1 compliance; not suitable for new automotive or lead-free manufacturing programs | Acceptable for legacy industrial repairs where RoHS and reflow compatibility are not required. |
Compared with SAC11A-TB-E3/57T and 1.5SMC11A, the SMCJ11A-E3/57T delivers superior surge robustness (1500 W vs. 600 W or legacy thermal design), guaranteed RoHS compliance, and MSL Level 1 suitability - making it the preferred choice for new designs targeting automotive, industrial, and telecom surge immunity standards.
Availability
SMCJ11A-E3/57T is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom line card surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMCJ11A-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, efficiency, and application-specific performance.
The SMCJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial automation, and communications infrastructure where failure resilience and repeatable clamping behavior are mandatory.
FAQ
What is the maximum clamping voltage of the SMCJ11A-E3/57T under a 10/1000 µs surge?
The SMCJ11A-E3/57T clamps to a maximum of 18.2 V when subjected to its rated peak pulse current of 82.4 A using a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and represents the upper bound of voltage seen by protected circuitry during worst-case surge events - a key parameter for ensuring downstream ICs remain within their absolute maximum ratings. The SMCJ11A-E3/57T achieves this with low incremental resistance and stable thermal performance.
Is the SMCJ11A-E3/57T RoHS-compliant and lead-free assembly compatible?
Yes, the SMCJ11A-E3/57T carries the "E3" suffix, indicating full RoHS compliance and qualification for lead-free reflow soldering. It meets MSL Level 1 per J-STD-020 with a maximum peak temperature of 260 °C, and its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 for solderability. The SMCJ11A-E3/57T is certified for use in modern automated SMT lines without preconditioning or special handling.
How does the SMCJ11A-E3/57T differ from bidirectional variants like SMCJ11CA?
The SMCJ11A-E3/57T is unidirectional and features a cathode band for polarity identification, while SMCJ11CA is bidirectional with no polarity marking and symmetrical clamping in both directions. Electrically, SMCJ11A-E3/57T has forward voltage drop (VF ≈ 3.5 V at 100 A), whereas SMCJ11CA does not conduct in forward bias. Use SMCJ11A-E3/57T for DC rail protection where polarity is fixed; choose SMCJ11CA only for AC-coupled or floating signal lines.
What is the recommended PCB layout for optimal thermal performance of the SMCJ11A-E3/57T?
To sustain full 1500 W peak pulse power, the SMCJ11A-E3/57T must be mounted on minimum 8.0 mm × 8.0 mm copper pads per terminal, as specified in the Vishay datasheet. These pads improve heat dissipation and reduce thermal impedance, preventing junction temperature exceedance during repetitive surges. Avoid narrow traces or thermal reliefs on these pads - direct copper pour connection is required. The SMCJ11A-E3/57T's RθJA of 75 °C/W assumes this layout.
Can the SMCJ11A-E3/57T replace older 1N6267A-type TVS diodes?
The SMCJ11A-E3/57T is a direct functional and mechanical upgrade to the through-hole 1N6267A, offering identical 11 V VWM and comparable clamping performance but in a surface-mount DO-214AB package. It provides higher surge rating (1500 W vs. 600 W), improved thermal response, and automated placement compatibility. No circuit redesign is needed beyond footprint adaptation - the SMCJ11A-E3/57T maintains the same unidirectional behavior and polarity orientation as the 1N6267A.
SMCJ11A-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 82.4A
- 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)
SMCJ11A-E3/57T FAQ
1.How can I place an order for SMCJ11A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ11A-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 SMCJ11A-E3/57T reliable?
The price and inventory of SMCJ11A-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 SMCJ11A-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ11A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ11A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ11A-E3/57T?
SMCJ11A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ11A-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 SMCJ11A-E3/57T?
For technical support, including SMCJ11A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ11A-E3/57T requirements.
6.How does Aetrix verify that SMCJ11A-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ11A-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 SMCJ11A-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ11A-E3/57T?
All SMCJ11A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ11A-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 SMCJ11A-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ11A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ11A-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 …
