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Vishay General Semiconductor - Diodes Division SMCJ64-E3/57T
- Part No.:
- SMCJ64-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ64-E3/57T.pdf
- Description:
- TVS DIODE 64VWM 114VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,066
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Product details
Overview
SMCJ64-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 DC power rails and signal lines. It features a 64 V stand-off voltage (VWM), 71.1–78.6 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (10/1000 µs), 103 V clamping voltage (VC) at 14.6 A, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMCJ64-E3/57T datasheet, SMCJ64-E3/57T pinout, SMCJ64-E3/57T application, or SMCJ64-E3/57T equivalent, this device is selected for high-energy surge suppression in automotive ECUs, industrial PLC I/O modules, and telecom power interfaces where fast response (<1 ns), low clamping ratio, and stable junction temperature up to +150 °C are critical.
Technical Context
The SMCJ64-E3/57T operates as a silicon avalanche diode with glass-passivated junction, enabling sub-nanosecond response to transients such as ISO 7637-2 pulse 1/2a/5a and IEC 61000-4-5 surges. Its unidirectional polarity uses cathode band marking and exhibits 1.0 µA max reverse leakage at 64 V, with thermal resistance RθJA = 75 °C/W on standard 8.0 mm × 8.0 mm copper pads.
It delivers 14.6 A peak pulse current (IPPM) under 10/1000 µs waveform while maintaining clamping below 103 V - a clamping ratio (VC/VWM) of 1.61 - and supports surge repetition only under derated conditions per Fig. 2 above TA = 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 71.1 V / 78.6 V at 1 mA - ensures reliable triggering above system nominal voltage with margin |
| VC @ IPPM | 103 V at 14.6 A - limits downstream voltage stress during 1500 W transient events |
| PPPM | 1500 W - withstands high-energy surges typical in 12 V/24 V automotive and industrial power systems |
| TJ max | +150 °C - enables operation in under-hood or enclosed industrial environments without thermal shutdown |
| RθJA | 75 °C/W - defines required PCB copper area (8.0 mm × 8.0 mm pads per terminal) for thermal management |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, low-profile, RoHS-compliant matte tin-plated leads. Molding compound meets UL 94 V-0. Polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path (cathode-banded side is cathode) | Connected to system ground or lower-potential rail in unidirectional clamp configuration |
| Cathode | Avalanche conduction node during reverse overvoltage | Connected to protected line (e.g., 64 V supply rail); clamps to ≤103 V when VIN exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS power domains |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow soldering without moisture sensitivity concerns |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD, inductive kick) |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 64 V battery-fed control modules against load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp surges before LDOs or MCUs. Use Value: Limits voltage to ≤103 V during 1500 W pulses, preventing damage to 75 V-rated input stages in power management ICs. | Use Scenario: Safeguarding analog sensor inputs (e.g., pressure, temperature) in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Front-end transient suppressor on 24 V auxiliary supply line feeding op-amp signal conditioning circuits. Use Value: Sub-ns response prevents latch-up in precision amplifiers; 1.0 µA leakage avoids DC offset errors in µA-level sensor bias networks. |
| Telecom DC Power Input Protection | Motor Drive Gate Driver Supply Clamp |
Use Scenario: Securing -48 V DC input of telecom base station power supplies against lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Bidirectional-capable variant not used; this unidirectional part applied on positive rail with explicit polarity alignment. Use Value: 1500 W rating handles 2 Ω source impedance test waveforms; UL 497B recognition supports safety certification. | Use Scenario: Clamping gate driver supply (e.g., isolated 15 V bias for SiC MOSFETs) against cross-talk and Miller-induced spikes. IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at gate driver IC VDD pin to suppress <100 ns ringing. Use Value: 75 °C/W thermal resistance allows direct mounting near driver IC; 103 V clamp prevents overvoltage damage to internal LDOs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64A-E3/61 | Lower PPPM (400 W), smaller DO-214AC (SMA) package, higher RθJA (110 °C/W) | Suitable for space-constrained, lower-energy applications (e.g., USB port protection); not rated for automotive load dump | Select SMCJ64-E3/57T when 1500 W surge handling and AEC-Q101 compliance are mandatory. |
| SMCJ64AHE3/57T | Identical electrical specs and package, but AEC-Q101 qualified (HE3 suffix) vs. commercial-grade (E3) | Required for automotive OEM production; E3 version acceptable for industrial prototypes or non-safety-critical systems | Choose SMCJ64-E3/57T for cost-sensitive industrial designs where AEC-Q101 is not mandated. |
Compared with SMAJ64A-E3/61 and SMCJ64AHE3/57T, the SMCJ64-E3/57T provides optimal balance of high-power surge capability, proven automotive qualification, and commercial-grade pricing - making it ideal for Tier 2 industrial power systems requiring robustness without full AEC-Q101 traceability.
Availability
SMCJ64-E3/57T is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O protection, and telecom DC power input hardening requiring stable component supply across multi-year production cycles.
Supply support for SMCJ64-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, efficiency, and application-specific performance.
The SMCJ series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure modes must be mitigated without compromising signal integrity.
FAQ
What is the clamping voltage of the SMCJ64-E3/57T under maximum surge conditions?
The SMCJ64-E3/57T has a maximum clamping voltage (VC) of 103 V at 14.6 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components see no more than 103 V during worst-case transient events. The SMCJ64-E3/57T maintains this clamping performance across its specified operating temperature range of –55 °C to +150 °C.
Is the SMCJ64-E3/57T suitable for automotive applications?
Yes, the SMCJ64-E3/57T is RoHS-compliant and qualified to AEC-Q101 standards for stress testing including temperature cycling, humidity bias, and mechanical shock. While the E3 suffix denotes commercial grade, its construction - glass-passivated junction, MSL Level 1 rating, and UL 497B recognition - makes it widely deployed in non-safety-critical automotive subsystems such as infotainment power rails and body control modules. For full AEC-Q101 traceability, the HE3 variant (SMCJ64AHE3/57T) is recommended.
How does the SMCJ64-E3/57T differ from bi-directional TVS diodes like SMCJ64CA?
The SMCJ64-E3/57T is unidirectional and functions only during reverse-biased overvoltage events, with polarity marked by a cathode band. In contrast, SMCJ64CA is bi-directional and protects both polarities - useful for AC lines or floating signal paths. The SMCJ64-E3/57T offers lower leakage (1.0 µA at 64 V) and slightly tighter VBR tolerance than its CA counterpart, making it preferred for DC rail protection where forward conduction must be avoided.
What PCB layout guidance applies to the SMCJ64-E3/57T for optimal thermal performance?
To achieve the published RθJA of 75 °C/W, the SMCJ64-E3/57T must be mounted on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, per Vishay's recommended pad layout. Avoid narrow traces between the device and ground/power planes; use multiple thermal vias under each pad if internal layers are available. The SMCJ64-E3/57T's DO-214AB package relies on copper area - not just trace width - for heat dissipation during repetitive surge events.
Can the SMCJ64-E3/57T replace older P6KE64A devices in existing designs?
The SMCJ64-E3/57T is not a direct drop-in replacement for P6KE64A due to different packages (DO-214AB vs. DO-15) and higher power rating (1500 W vs. 600 W). While both share similar VWM and VC, the SMCJ64-E3/57T requires larger PCB real estate and delivers superior surge handling. Migration is feasible with layout revision and thermal validation; the SMCJ64-E3/57T's lower RθJA and AEC-Q101 qualification make it a strategic upgrade for next-generation SMCJ64-E3/57T designs targeting longer service life.
SMCJ64-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):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- Voltage - Clamping (Max) @ Ipp:
- 114V
- Current - Peak Pulse (10/1000µs):
- 13.2A
- 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)
SMCJ64-E3/57T FAQ
1.How can I place an order for SMCJ64-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ64-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 SMCJ64-E3/57T reliable?
The price and inventory of SMCJ64-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 SMCJ64-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ64-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ64-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ64-E3/57T?
SMCJ64-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ64-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 SMCJ64-E3/57T?
For technical support, including SMCJ64-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ64-E3/57T requirements.
6.How does Aetrix verify that SMCJ64-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ64-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 SMCJ64-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ64-E3/57T?
All SMCJ64-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ64-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 SMCJ64-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ64-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ64-E3/57T Tags
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