My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCJ7.0A-M3/57T
- Part No.:
- SMCJ7.0A-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ7.0A-M3/57T.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,023
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ7.0A-M3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on power and signal lines. It features a 7.0 V stand-off voltage (VWM), 7.78–8.60 V breakdown voltage (VBR) at 10 mA, 1500 W peak pulse power (PPPM), 125 A peak pulse current (IPPM), and 12.0 V maximum clamping voltage (VC) - deployed in automotive ECUs, industrial I/O protection, and DC power rail surge suppression.
For engineers reviewing the SMCJ7.0A-M3/57T datasheet, SMCJ7.0A-M3/57T pinout, SMCJ7.0A-M3/57T application, or SMCJ7.0A-M3/57T equivalent, key selection criteria include unidirectional polarity, 12.0 V clamping under 10/1000 μs surge, halogen-free RoHS compliance (M3 suffix), SMC package thermal resistance (RθJA = 75 °C/W), and AEC-Q101 qualification eligibility via HM3 variant.
Technical Context
The SMCJ7.0A-M3/57T operates as a clamping-type TVS diode with avalanche breakdown behavior, triggered when reverse voltage exceeds its 7.78–8.60 V VBR range. Its low incremental surge resistance and fast response time (<1 ns) enable effective suppression of ESD, lightning-induced surges, and inductive switching spikes.
It is rated for 1500 W peak pulse power under standardized 10/1000 μs waveform, with derating above 25 °C per Fig. 2. The device exhibits 0.065 %/°C temperature coefficient of VBR and 1000 μA max reverse leakage at 7.0 V, ensuring stable clamping across operating temperatures from –55 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 7.78 V / 8.60 V at IT = 10 mA - ensures reliable avalanche conduction onset within tight tolerance |
| VC @ IPPM | 12.0 V at IPPM = 125 A - defines worst-case clamped voltage seen by protected circuitry |
| PPPM | 1500 W - peak transient energy absorption capability under 10/1000 μs waveform |
| ID @ VWM | 1000 μA - low leakage preserves signal integrity and minimizes standby power loss |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 75 °C/W RθJA for board-level thermal management |
| Polarity | Unidirectional - cathode marked by band; blocks forward current beyond VF ≈ 3.5 V at 100 A |
Pinout & Package
SMCJ7.0A-M3/57T uses the SMC (DO-214AB) package: a surface-mount, molded plastic case with two coplanar leads, 0.305–0.320 inch length, 0.220–0.246 inch width, and cathode band marking. Thermal resistance is RθJA = 75 °C/W (on recommended 8.0 mm × 8.0 mm copper pads).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse surge return path | Connected to lower-potential side (e.g., GND or return line); carries full surge current during clamping |
| Cathode | Clamping node / Surge sink | Marked by band; connected to protected line (e.g., 7 V rail); conducts avalanche current to anode when V > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free, RoHS-compliant (M3) | Meets environmental compliance requirements for industrial and automotive production without brominated flame retardants |
| MSL Level 1 (J-STD-020) | Zero moisture sensitivity; supports standard reflow without baking or special handling |
| 1500 W peak pulse rating | Withstands high-energy transients common in 12 V/24 V automotive and industrial power systems |
| Low clamping ratio (VC/VWM = 1.71) | Minimizes overvoltage stress on downstream ICs compared to higher-ratio suppressors |
| Glass passivated junction | Enhances long-term reliability and stability of breakdown characteristics under repeated surge stress |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protecting microcontroller GPIO and CAN transceiver power rails from load-dump and jump-start surges in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between 12 V supply and local regulator input, conducting only during overvoltage events. Use Value: Limits transient voltage to ≤12.0 V, preventing damage to 5 V LDOs and MCU power domains while supporting AEC-Q101-qualified designs when using HM3 variant. |
Use Scenario: Safeguarding 24 V digital input channels against field-wiring induced surges and relay coil flyback in factory automation controllers. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted directly at connector entry point, shunting surge energy to chassis ground before reaching optocoupler input stage. Use Value: Maintains 7.0 V standoff while clamping 125 A surges to 12.0 V, enabling robust operation in EN 61000-4-5 Level 4 environments. |
| DC Power Supply Output Rail | USB Type-C VBUS Line Protection |
|
Use Scenario: Secondary-side overvoltage protection on switched-mode power supply outputs delivering 5–12 V to embedded systems. IC Role / Device Role / Timing Role: Fast-acting clamping device parallel to output capacitor, activated within nanoseconds of overvoltage excursion. Use Value: Prevents latch-up or burnout of downstream PMICs and SoCs by limiting overshoot to 12.0 V during startup or fault conditions. |
Use Scenario: Supplemental transient protection on USB-C VBUS lines where primary protection resides upstream of USB PD controller. IC Role / Device Role / Timing Role: Low-leakage (1000 μA) unidirectional clamp referenced to system ground, placed after ESD diode array but before power switch. Use Value: Adds 1500 W surge margin without compromising VBUS regulation accuracy or increasing standby current beyond specification limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.0A-M3 | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (110 °C/W) | Suitable for lower-energy transients; limited thermal margin in high-ambient industrial settings | Select when board space is constrained and surge threat level is ≤400 W (e.g., consumer sensor nodes) |
| SMCJ7.0CA-M3 | Bidirectional version; same VWM (7.0 V), symmetric clamping in both polarities; ID doubled to 2000 μA | Required for AC-coupled or floating signal lines (e.g., RS-485, audio inputs) where polarity reversal occurs | Choose for bidirectional protection needs; not interchangeable without circuit redesign due to polarity behavior |
Compared with SMAJ7.0A-M3, SMCJ7.0A-M3/57T delivers 275 % higher surge power handling and superior thermal performance; versus SMCJ7.0CA-M3, it offers tighter leakage control and avoids unnecessary bidirectional conduction in DC-only rails.
Availability
SMCJ7.0A-M3/57T is available at Aetrix Electronics and suitable for automotive electronics, industrial programmable logic controllers, and DC power supply design requiring stable component supply, halogen-free compliance, and high-reliability surge immunity.
Supply support for SMCJ7.0A-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 targets high-energy transient suppression in harsh environments, with design focus on automotive, industrial, and telecom infrastructure where robustness against ISO 7637-2 and IEC 61000-4-5 threats is mandatory.
FAQ
What is the clamping voltage of the SMCJ7.0A-M3/57T under maximum surge conditions?
The SMCJ7.0A-M3/57T has a maximum clamping voltage (VC) of 12.0 V when subjected to its rated 125 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured at TJ = 25 °C with devices mounted on 8.0 mm × 8.0 mm copper pads per JEDEC guidelines. The SMCJ7.0A-M3/57T maintains this clamping performance across its full operating temperature range, making it suitable for use in thermally demanding automotive and industrial applications.
Is the SMCJ7.0A-M3/57T AEC-Q101 qualified?
The SMCJ7.0A-M3/57T itself is the commercial-grade halogen-free variant (M3 suffix); AEC-Q101 qualification applies to the HM3-suffixed versions (e.g., SMCJ7.0A-HM3/57T). The base SMCJ7.0A-M3/57T shares identical die, construction, and test flow with its HM3 counterpart, differing only in traceability and certification documentation. For automotive production, engineers must specify the HM3 ordering code to receive AEC-Q101 certified units. The SMCJ7.0A-M3/57T remains fully compatible in form, fit, and function.
How does the SMCJ7.0A-M3/57T compare to the SMAJ7.0A-M3 in terms of thermal performance?
The SMCJ7.0A-M3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on recommended 8.0 mm × 8.0 mm copper pads, whereas the SMAJ7.0A-M3 (in smaller SMA package) specifies 110 °C/W under identical conditions. This 32 % lower thermal resistance allows the SMCJ7.0A-M3/57T to sustain higher average power dissipation and operate reliably at elevated ambient temperatures. The SMCJ7.0A-M3/57T's superior thermal performance directly supports its 1500 W PPPM rating versus the SMAJ7.0A-M3's 400 W rating.
Can the SMCJ7.0A-M3/57T be used in bidirectional signal line protection?
No - the SMCJ7.0A-M3/57T is a unidirectional TVS diode, with polarity defined by the cathode band marking. It conducts only when reverse-biased beyond its breakdown voltage and blocks forward current above ~3.5 V. For bidirectional protection (e.g., RS-485, analog sensor lines), the SMCJ7.0CA-M3 variant must be used instead. Substituting the SMCJ7.0A-M3/57T in a bidirectional application risks failure during positive-going transients. The SMCJ7.0A-M3/57T is intended exclusively for DC power rail and unidirectional signal line protection.
What is the meaning of the "/57T" suffix in SMCJ7.0A-M3/57T?
"/57T" denotes the preferred packaging configuration: 7-inch diameter plastic tape and reel, with 850 units per reel. The "57T" code aligns with Vishay's internal packaging nomenclature and indicates compliance with EIA-481-D standards for automated SMT placement. This format ensures consistent feeding in high-speed pick-and-place equipment. The SMCJ7.0A-M3/57T is supplied with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102, and meets JESD 201 Class 2 whisker resistance requirements.
SMCJ7.0A-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 125A
- 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)
SMCJ7.0A-M3/57T FAQ
1.How can I place an order for SMCJ7.0A-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ7.0A-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 SMCJ7.0A-M3/57T reliable?
The price and inventory of SMCJ7.0A-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 SMCJ7.0A-M3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ7.0A-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ7.0A-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ7.0A-M3/57T?
SMCJ7.0A-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ7.0A-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 SMCJ7.0A-M3/57T?
For technical support, including SMCJ7.0A-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ7.0A-M3/57T requirements.
6.How does Aetrix verify that SMCJ7.0A-M3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ7.0A-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 SMCJ7.0A-M3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ7.0A-M3/57T?
All SMCJ7.0A-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ7.0A-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 SMCJ7.0A-M3/57T part is unused and in its original packaging.
Return procedure for SMCJ7.0A-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ7.0A-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 …
