My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCJ14CA-M3/57T
- Part No.:
- SMCJ14CA-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ14CA-M3/57T.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,190
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ14CA-M3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on signal or power lines. It features a 14 V standoff voltage (VWM), 23.2 V maximum clamping voltage at 64.7 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 μs waveform.
For engineers reviewing the SMCJ14CA-M3/57T datasheet, SMCJ14CA-M3/57T pinout, SMCJ14CA-M3/57T application, or SMCJ14CA-M3/57T equivalent, key selection criteria include bidirectional surge protection capability, low clamping ratio (VC/VWM ≈ 1.66), halogen-free RoHS compliance (M3 suffix), and suitability for automotive-grade designs when paired with AEC-Q101–qualified variants.
Technical Context
The SMCJ14CA-M3/57T operates as a silicon avalanche diode with symmetrical breakdown behavior in both polarities, enabling protection of AC-coupled or floating signal paths without polarity sensitivity. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ps), while the SMC package provides robust thermal dissipation (RθJL = 15 °C/W).
It is rated for non-repetitive 10/1000 μs surge events up to 1500 W, with derating above 25 °C ambient per Figure 2. The device meets MSL Level 1 per J-STD-020 and supports automated SMT placement with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 14 V - Maximum continuous reverse voltage before clamping begins; defines operating margin below breakdown. |
| VBR (Breakdown Voltage) | 15.6 V min / 17.2 V max at 1.0 mA - Ensures reliable triggering within tight tolerance band for predictable protection onset. |
| VC (Clamping Voltage) | 23.2 V at IPPM = 64.7 A - Limits transient voltage seen by downstream circuitry during worst-case surge. |
| PPPM (Peak Pulse Power) | 1500 W (10/1000 μs) - Supports high-energy transients common in automotive load-dump or inductive switching events. |
| ID (Reverse Leakage) | ≤1.0 μA at VWM - Minimizes standby power loss and avoids false triggering in low-power sensor interfaces. |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and industrial enclosures with elevated ambient temperatures. |
| Package | SMC (DO-214AB) - Industry-standard 2-pin surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal design requirement. |
Pinout & Package
SMCJ14CA-M3/57T uses the SMC (DO-214AB) package: a 2-terminal, bidirectional surface-mount device with no polarity marking. Both terminals are electrically symmetrical; neither is designated anode or cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Transient Input/Output Node | Connects to protected line (e.g., CAN_H, RS-485 A/B, USB D+/D−); bidirectional conduction allows AC or floating signal protection. |
| Terminal 2 | Transient Input/Output Node | Completes symmetrical TVS path; identical electrical role to Terminal 1; no ground reference required. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of differential or AC-coupled signals (e.g., CAN, RS-485) without polarity constraints. |
| 1500 W peak pulse power | Withstands high-energy transients such as ISO 7637-2 Pulse 5a (load dump) in 12 V automotive systems. |
| Halogen-free & RoHS-compliant (M3) | Meets environmental compliance requirements for consumer, industrial, and automotive electronics manufacturing. |
| MSL Level 1 rating | Allows unlimited floor life and reflow soldering at peak temperature up to 260 °C without moisture-related damage. |
| Low clamping ratio (VC/VWM = 1.66) | Minimizes overvoltage stress on protected ICs compared to alternatives with higher ratios (e.g., >1.8). |
Applications
| Automotive CAN Bus Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting CAN_H/CAN_L lines in vehicle ECUs against ISO 7637-2 load dump and coupled EFT noise. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt surge energy before transceiver input. Use Value: Maintains signal integrity under 1500 W transients while adding <0.5 pF capacitance-no data rate degradation at 1 Mbps CAN FD. | Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs exposed to motor drive switching noise. IC Role / Device Role / Timing Role: Differential-line TVS across A/B bus pins to suppress common-mode surges induced by nearby VFDs or solenoid actuation. Use Value: Clamps to 23.2 V before transceiver absolute maximum rating (±15 V) is exceeded, preventing latch-up or permanent damage. |
| Consumer USB 2.0 Data Lines | Telecom DSL Line Interface |
Use Scenario: ESD and surge protection for USB D+/D− lines in set-top boxes and docking stations. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp placed inline between connector and USB PHY to meet IEC 61000-4-2 Level 4 (±15 kV air). Use Value: Sub-1 μA leakage at 14 V VWM prevents signal distortion; 23.2 V VC ensures USB 2.0 eye diagram remains compliant post-surge. | Use Scenario: Primary protection for ADSL/VDSL line drivers subjected to lightning-induced surges on outside plant wiring. IC Role / Device Role / Timing Role: First-stage TVS on line-side transformer secondary to absorb multi-kW surges before secondary-side protection stages. Use Value: 1500 W rating handles ITU-T K.20/K.21 surge test profiles; DO-214AB package enables compact layout adjacent to isolation transformer. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC14CA | Lower PPPM (600 W), same VWM/VC, smaller SMA package | Limited to lower-energy transients; unsuitable for automotive load dump | Select when board space is constrained and surge threat level is ≤IEC 61000-4-5 2nd edition Level 3. |
| SMCJ14A-M3/57T | Unidirectional variant; cathode-marked; VF = 3.5 V at 100 A forward conduction | Requires correct polarity orientation; not usable on AC/floating lines | Choose only for DC-biased rails where polarity is fixed and forward conduction may be needed. |
Compared with SAC14CA and SMCJ14A-M3/57T, the SMCJ14CA-M3/57T uniquely delivers 1500 W bidirectional clamping in a thermally robust SMC package-making it the preferred choice for automotive, industrial, and telecom infrastructure where surge energy and polarity uncertainty are critical design factors.
Availability
SMCJ14CA-M3/57T is available at Aetrix Electronics and suitable for automotive CAN bus protection, industrial RS-485 interface hardening, and telecom DSL line surge suppression requiring stable component supply across extended production lifecycles.
Supply support for SMCJ14CA-M3/57T 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 is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in automotive, industrial, and communications systems where robustness and repeatable clamping performance are mandatory.
FAQ
What does the "CA" suffix indicate in SMCJ14CA-M3/57T?
The "CA" suffix denotes a bidirectional configuration: the SMCJ14CA-M3/57T provides symmetrical clamping in both voltage polarities, making it suitable for protecting AC-coupled or differential signal lines like CAN, RS-485, or USB without regard to polarity. Unlike unidirectional "A" variants, SMCJ14CA-M3/57T has no cathode marking and identical electrical behavior regardless of terminal orientation.
Is SMCJ14CA-M3/57T AEC-Q101 qualified?
No, SMCJ14CA-M3/57T is not AEC-Q101 qualified. It carries the M3 suffix indicating halogen-free and RoHS-compliant construction for commercial-grade use. For automotive qualification, select the HM3-suffixed variant (e.g., SMCJ14CAHM3_A/H), which is explicitly tested and certified to AEC-Q101 requirements per the Vishay ordering table.
What is the maximum clamping voltage of SMCJ14CA-M3/57T and at what current is it specified?
The maximum clamping voltage (VC) of SMCJ14CA-M3/57T is 23.2 V, measured at a peak pulse current (IPPM) of 64.7 A using the standard 10/1000 μs double-exponential waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during surge events.
Can SMCJ14CA-M3/57T be used in place of a unidirectional TVS like SMCJ14A-M3/57T?
SMCJ14CA-M3/57T can replace SMCJ14A-M3/57T only in circuits where polarity is undefined or bidirectional operation is required-such as differential buses. It must not be substituted in DC-biased applications expecting forward conduction (e.g., reverse-polarity protection), as SMCJ14CA-M3/57T lacks a defined cathode and exhibits no controlled forward voltage drop like the unidirectional SMCJ14A-M3/57T.
What PCB pad layout is required for optimal thermal performance of SMCJ14CA-M3/57T?
For optimal thermal performance and surge handling, SMCJ14CA-M3/57T requires mounting on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as specified in the Vishay datasheet. Smaller pads reduce heat dissipation, causing premature thermal runaway during repetitive surges and degrading the 1500 W rating.
SMCJ14CA-M3/57T 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 23.2V
- Current - Peak Pulse (10/1000µs):
- 64.7A
- 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 (SMC)
SMCJ14CA-M3/57T FAQ
1.How can I place an order for SMCJ14CA-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ14CA-M3/57T 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 SMCJ14CA-M3/57T reliable?
The price and inventory of SMCJ14CA-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ14CA-M3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ14CA-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ14CA-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ14CA-M3/57T?
SMCJ14CA-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ14CA-M3/57T 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 SMCJ14CA-M3/57T?
For technical support, including SMCJ14CA-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ14CA-M3/57T requirements.
6.How does Aetrix verify that SMCJ14CA-M3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ14CA-M3/57T 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 SMCJ14CA-M3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ14CA-M3/57T?
All SMCJ14CA-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ14CA-M3/57T, 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 SMCJ14CA-M3/57T part is unused and in its original packaging.
Return procedure for SMCJ14CA-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ14CA-M3/57T 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 …
