My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCJ6.5-E3/57T
- Part No.:
- SMCJ6.5-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ6.5-E3/57T.pdf
- Description:
- TVS DIODE 6.5VWM 12.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,702
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ6.5-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 6.5 V stand-off voltage (VWM), 11.2 V maximum clamping voltage (VC) at 133.9 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform - ideal for protecting MOSFETs, ICs, and sensor signal lines against inductive switching transients in automotive and industrial systems.
For engineers reviewing the SMCJ6.5-E3/57T datasheet, SMCJ6.5-E3/57T pinout, SMCJ6.5-E3/57T application, or SMCJ6.5-E3/57T equivalent, key selection criteria include verified unidirectional polarity, AEC-Q101 qualification, RoHS-compliant matte tin plating, MSL Level 1 rating, and thermal resistance (RθJA = 75 °C/W) under standard 8.0 mm × 8.0 mm copper pad layout.
Technical Context
The SMCJ6.5-E3/57T operates as a silicon avalanche diode with glass-passivated junction, delivering sub-nanosecond response to ESD and surge events. Its breakdown voltage (VBR) is specified at 7.22–7.98 V with 10 mA test current, and it maintains stable clamping performance up to 150 °C junction temperature.
Designed for surface-mount automated placement, the device uses a DO-214AB case with cathode band marking, meets UL 94 V-0 flammability, and supports soldering per J-STD-002 and JESD 22-B102. It is rated for non-repetitive 200 A forward surge (IFSM, 8.3 ms half-sine) and exhibits low incremental surge resistance for consistent energy absorption.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - maximum reverse working voltage before clamping begins; ensures reliable operation below system rail during normal conditions |
| VBR min/max | 7.22 V / 7.98 V at IT = 10 mA - defines precise avalanche onset range for predictable turn-on behavior |
| VC @ IPPM | 11.2 V at 133.9 A - clamping voltage under 10/1000 µs surge; limits protected circuit stress to safe levels |
| PPPM | 1500 W - peak pulse power handling capacity; enables protection against high-energy transients like ISO 7637-2 Pulse 5a |
| ID @ VWM | 500 µA - maximum reverse leakage at 6.5 V; minimizes standby power loss in battery-powered systems |
| TJ max | +150 °C - maximum junction temperature; supports operation in under-hood automotive and industrial environments |
| RθJA | 75 °C/W - thermal resistance junction-to-ambient on standard 8.0 mm × 8.0 mm pads; informs heatsinking requirements |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, low-profile case with molded epoxy body and matte tin-plated leads. Cathode indicated by a visible band on one end; polarity critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential node; completes path during reverse-biased clamping |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., power rail or signal); avalanche conduction initiates here during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 standards |
| Glass passivated junction | Enhances long-term stability and moisture resistance vs. non-passivated alternatives; improves surge lifetime |
| MSL Level 1 (260 °C peak) | Enables standard lead-free reflow without preconditioning; eliminates moisture-related popcorning risk |
| Low incremental surge resistance | Ensures minimal voltage overshoot during fast-rising transients (<1 ns rise time), critical for protecting CMOS inputs |
| UL 94 V-0 compliant molding | Self-extinguishing encapsulant meets safety requirements for enclosed industrial and automotive enclosures |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 6.5 V. Use Value: Limits rail voltage to ≤11.2 V during 133.9 A transients, preventing damage to 16 V-rated regulators and microcontrollers in SMCJ6.5-E3/57T-equipped modules. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in PLC I/O modules exposed to field wiring noise. IC Role / Device Role / Timing Role: Low-leakage (500 µA) TVS shunting induced spikes on 4–20 mA loop lines before signal conditioning amplifiers. Use Value: Maintains signal integrity with <11.2 V clamping while adding negligible offset error due to tight VBR tolerance (±5.3%) in SMCJ6.5-E3/57T. |
| Consumer Power Adapter Input Stage | Telecom DC Power Interface |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters subjected to lightning-induced surges on mains input. IC Role / Device Role / Timing Role: Standoff-rated TVS across output capacitor to absorb reflected energy from primary-side MOV failure or transformer flyback. Use Value: Withstands 1500 W pulses without degradation, enabling compliance with IEC 61000-4-5 Level 3 (1 kV/2 Ω) when used with proper PCB layout in SMCJ6.5-E3/57T designs. |
Use Scenario: DC feed protection in PoE-powered network switches where 48 V supply lines are vulnerable to hot-swap and cable discharge events. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to return path, absorbing positive-going transients while preserving negative common-mode margin. Use Value: Delivers 133.9 A surge current handling at 11.2 V clamping - sufficient to meet Telcordia GR-1089-CORE Class B immunity requirements when paired with upstream current limiting in SMCJ6.5-E3/57T implementations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.5A-E3/61 | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (110 °C/W), same VWM/VBR range | Suitable only for lower-energy transients (e.g., ESD-only); not recommended for load dump or ISO 7637-2 Pulse 5a | Select SMCJ6.5-E3/57T when 1500 W surge capability and automotive qualification are required; SMAJ6.5A-E3/61 fits space-constrained consumer boards. |
| SMCJ6.5CA-E3/57T | Bi-directional variant; identical VWM (6.5 V), but symmetric clamping (VC = 11.2 V in both polarities); same DO-214AB package | Required for AC-coupled or bidirectional signal lines (e.g., RS-485, CAN bus); unsuitable for DC rail protection where polarity matters | Choose SMCJ6.5-E3/57T for unidirectional DC rails; use SMCJ6.5CA-E3/57T only if bidirectional clamping is explicitly needed - no pinout change, but functional difference is critical. |
Compared with SMAJ6.5A-E3/61 and SMCJ6.5CA-E3/57T, the SMCJ6.5-E3/57T uniquely combines 1500 W surge rating, AEC-Q101 qualification, and unidirectional polarity in DO-214AB - making it the only option among the three validated for automotive power rail protection per ISO 16750-2.
Availability
SMCJ6.5-E3/57T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power systems requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMCJ6.5-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, and protection devices with emphasis on reliability, ruggedness, and automotive-grade validation.
The SMCJ series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where sustained surge immunity and thermal stability are mandatory.
FAQ
What is the clamping voltage of SMCJ6.5-E3/57T at its rated peak pulse current?
The SMCJ6.5-E3/57T has a maximum clamping voltage (VC) of 11.2 V when subjected to its rated peak pulse current (IPPM) of 133.9 A using a 10/1000 µs waveform. This value is measured under standardized test conditions per ANSI/IEEE C62.35 and reflects worst-case voltage seen by downstream circuitry during surge events - a critical parameter for ensuring protected ICs remain within absolute maximum ratings in SMCJ6.5-E3/57T deployments.
Is SMCJ6.5-E3/57T qualified for automotive applications?
Yes, SMCJ6.5-E3/57T is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per JESD22 standards. Its DO-214AB package, MSL Level 1 rating, and 150 °C maximum junction temperature make it suitable for under-hood and body-control module applications - confirmed in Vishay's official qualification report for the SMCJ family, which explicitly lists SMCJ6.5-E3/57T as compliant.
What does the "E3/57T" suffix indicate in SMCJ6.5-E3/57T?
The "E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting J-STD-002 solderability and JESD 201 Class 1A whisker resistance. The "57T" indicates packaging in 7-inch diameter plastic tape and reel, with a base quantity of 850 units - a standard logistics configuration for SMCJ6.5-E3/57T used in high-volume SMT assembly lines.
How does SMCJ6.5-E3/57T differ from bi-directional SMCJ6.5CA-E3/57T?
SMCJ6.5-E3/57T is unidirectional with cathode band marking and clamps only in reverse bias, while SMCJ6.5CA-E3/57T is bi-directional with no polarity marking and clamps symmetrically in both directions. Their VWM (6.5 V), VBR (7.22–7.98 V), and VC (11.2 V) match, but SMCJ6.5-E3/57T must be oriented correctly on PCBs - incorrect placement renders it ineffective. This functional distinction makes SMCJ6.5-E3/57T appropriate for DC rail protection and SMCJ6.5CA-E3/57T for AC or differential signal lines.
What is the thermal resistance of SMCJ6.5-E3/57T, and how does it affect layout?
The SMCJ6.5-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 - as defined in Vishay's datasheet Figure 2 derating curve. To maintain safe junction temperatures under repeated surges, PCB layout must replicate this pad area; reducing pad size increases RθJA and risks thermal runaway. This requirement directly impacts thermal design for SMCJ6.5-E3/57T in high-duty-cycle applications.
SMCJ6.5-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):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 12.3V
- Current - Peak Pulse (10/1000µs):
- 122A
- 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)
SMCJ6.5-E3/57T FAQ
1.How can I place an order for SMCJ6.5-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ6.5-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 SMCJ6.5-E3/57T reliable?
The price and inventory of SMCJ6.5-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 SMCJ6.5-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ6.5-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ6.5-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ6.5-E3/57T?
SMCJ6.5-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ6.5-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 SMCJ6.5-E3/57T?
For technical support, including SMCJ6.5-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ6.5-E3/57T requirements.
6.How does Aetrix verify that SMCJ6.5-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ6.5-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 SMCJ6.5-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ6.5-E3/57T?
All SMCJ6.5-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ6.5-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 SMCJ6.5-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ6.5-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ6.5-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 …
