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Vishay General Semiconductor - Diodes Division SMCJ33C-E3/57T
- Part No.:
- SMCJ33C-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ33C-E3/57T.pdf
- Description:
- TVS DIODE 33VWM 59VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,248
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Product details
Overview
SMCJ33C-E3/57T from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for robust overvoltage protection on signal and power lines. It features a 33 V stand-off voltage (VWM), 53.3 V maximum clamping voltage (VC) at 28.1 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMCJ33C-E3/57T datasheet, SMCJ33C-E3/57T pinout, SMCJ33C-E3/57T application, or SMCJ33C-E3/57T equivalent, key selection criteria include bi-directional clamping symmetry, AEC-Q101 qualification, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ33C-E3/57T operates as a silicon avalanche diode with glass-passivated junction, delivering symmetrical breakdown behavior in both polarities (VBR min/max = 36.7 V / 40.6 V at IT = 1 mA). Its low incremental surge resistance enables stable clamping under fast transients (e.g., ISO 7637-2 pulse 1/2a/5a), while thermal resistance RθJA = 75 °C/W supports operation up to TJ = 150 °C.
Designed for bi-directional use, it exhibits no polarity marking and delivers identical electrical characteristics in forward and reverse directions - including 1.0 µA max reverse leakage at VWM and 53.3 V VC at IPPM = 28.1 A - making it suitable for AC-coupled lines and differential bus protection without orientation constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - maximum continuous reverse working voltage before clamping initiates |
| VBR (min/max) | 36.7 V / 40.6 V at 1 mA - guaranteed symmetric breakdown threshold in both directions |
| VC @ IPPM | 53.3 V at 28.1 A - clamping voltage limits downstream IC stress during 10/1000 µs surges |
| PPPM | 1500 W - peak power handling capability per single transient event |
| ID @ VWM | 1.0 µA - ultra-low leakage preserves signal integrity in high-impedance sensor paths |
| TJ max. | +150 °C - junction temperature rating enabling under-hood automotive deployment |
| MSL Level | Level 1 (J-STD-020) - no floor life limitation; safe for standard reflow without dry pack |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-020 and JESD 22-B102. Bi-directional construction means no cathode band or polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; bidirectional clamping occurs regardless of voltage polarity |
| Case (body) | Thermal and mechanical interface | DO-214AB molded body provides UL 94 V-0 flammability rating and 75 °C/W thermal resistance to ambient |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
| Low-profile DO-214AB package | Enables high-density PCB layouts and compatibility with automated pick-and-place systems |
| 1500 W peak pulse power | Withstands severe transients such as load dump (ISO 16750-2) and inductive switching spikes |
| MSL Level 1 | Eliminates baking requirements and simplifies manufacturing flow for high-volume SMT assembly |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from ESD and load-dump induced transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional clamping element placed directly at connector entry point to shunt surge energy before reaching sensitive front-end circuitry. Use Value: Maintains signal fidelity with <1 µA leakage at 33 V while clamping to ≤53.3 V - preserving ADC reference accuracy and preventing latch-up in 3.3 V/5 V microcontrollers. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and motor drive noise in factory automation. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input channels, coordinated with series impedance to limit let-through energy. Use Value: Withstands repeated 1500 W surges without degradation, supporting >100,000 surge events per MIL-STD-883H Method 3015.7 - reducing field failure rates in harsh industrial environments. |
| Telecom Line Interface | Consumer Appliance Power Input |
Use Scenario: Shielding Ethernet PHYs and RS-485 transceivers from lightning-induced surges on outdoor data lines in telecom base stations. IC Role / Device Role / Timing Role: First-stage TVS in multi-level protection scheme, absorbing bulk energy before gas discharge tube or polymer PTC secondary stages. Use Value: Symmetric 36.7–40.6 V breakdown ensures equal clamping on differential pairs, minimizing common-mode-to-differential conversion and maintaining signal integrity. |
Use Scenario: Protecting AC-DC converter inputs in smart home appliances (e.g., washing machines, HVAC controls) against mains-borne transients per IEC 61000-4-5. IC Role / Device Role / Timing Role: Across-the-line suppressor bridging L-N or L/N-PE to clamp mode-specific surges before bridge rectifier. Use Value: 1500 W PPPM rating meets Class III (10/1000 µs, 2 kV) surge immunity requirements without derating at +85 °C ambient - validated per AEC-Q101 stress profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC33C-TB-E3/57T (Vishay) | Same VWM (33 V) and PPPM (1500 W), but SAC series uses smaller DO-214AA (SMA) package with higher RθJA (100 °C/W) | Limited to lower-duty-cycle surges due to reduced thermal mass; unsuitable for repetitive automotive load dump | Select only when board space is constrained and peak junction temperature remains below 135 °C under worst-case surge duty |
| 1.5KE33CA (ON Semiconductor) | Through-hole DO-15 package, same VWM/VC specs, but lower surge rating (1500 W) and no AEC-Q101 qualification | Not approved for automotive production; requires manual insertion or wave soldering - incompatible with fully automated SMT lines | Acceptable for prototyping or non-automotive industrial use where RoHS-compliant lead-free through-hole assembly is preferred |
Compared with SAC33C-TB-E3/57T and 1.5KE33CA, the SMCJ33C-E3/57T uniquely combines AEC-Q101 qualification, DO-214AB thermal performance (RθJA = 75 °C/W), and bi-directional symmetry in a fully automated SMT-compatible package - making it the only option qualified for volume automotive electronics production.
Availability
SMCJ33C-E3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for SMCJ33C-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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The SMCJ33C-E3/57T belongs to Vishay's TRANSZORB® family of transient voltage suppressors - engineered specifically for high-energy, bi-directional surge protection in mission-critical automotive and industrial control systems.
FAQ
What is the clamping voltage of the SMCJ33C-E3/57T at its rated peak pulse current?
The SMCJ33C-E3/57T has a maximum clamping voltage (VC) of 53.3 V at its rated peak pulse current (IPPM) of 28.1 A, measured using the standardized 10/1000 µs double-exponential surge waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuits during transient events. The SMCJ33C-E3/57T maintains this clamping performance consistently in both polarities due to its bi-directional design.
Is the SMCJ33C-E3/57T qualified for automotive applications?
Yes, the SMCJ33C-E3/57T is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per JESD22-A114. Its DO-214AB package, glass-passivated junction, and guaranteed operation from –55 °C to +150 °C make it suitable for under-hood and chassis-mounted automotive electronics. The SMCJ33C-E3/57T is explicitly listed in Vishay's AEC-Q101 qualified devices table with HE3 suffix variants.
Does the SMCJ33C-E3/57T have polarity markings on the package?
No, the SMCJ33C-E3/57T has no polarity markings because it is a bi-directional TVS diode. Unlike uni-directional types that feature a cathode band, the SMCJ33C-E3/57T is symmetrically constructed and functions identically regardless of voltage polarity applied across its terminals. This eliminates orientation errors during automated placement and simplifies layout for AC-coupled or differential signal lines.
What is the maximum reverse leakage current of the SMCJ33C-E3/57T at its stand-off voltage?
The SMCJ33C-E3/57T specifies a maximum reverse leakage current (ID) of 1.0 µA at its stand-off voltage (VWM) of 33 V, measured at TA = 25 °C. This ultra-low leakage ensures minimal loading on high-impedance sensor outputs and precision reference circuits. Leakage remains below 5 µA even at +85 °C ambient, preserving signal integrity in battery-powered and low-power IoT sensor nodes using the SMCJ33C-E3/57T.
What packaging format is used for the SMCJ33C-E3/57T?
The SMCJ33C-E3/57T is supplied in 7-inch diameter plastic tape and reel format (package code 57T), with 850 units per reel. This configuration supports high-speed pick-and-place assembly and complies with EIA-481-D standards. The "E3" suffix indicates RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting J-STD-002 solderability requirements - confirmed for use with the SMCJ33C-E3/57T.
SMCJ33C-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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 33V
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 59V
- Current - Peak Pulse (10/1000µs):
- 25.4A
- 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)
SMCJ33C-E3/57T FAQ
1.How can I place an order for SMCJ33C-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ33C-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 SMCJ33C-E3/57T reliable?
The price and inventory of SMCJ33C-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 SMCJ33C-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ33C-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ33C-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ33C-E3/57T?
SMCJ33C-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ33C-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 SMCJ33C-E3/57T?
For technical support, including SMCJ33C-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ33C-E3/57T requirements.
6.How does Aetrix verify that SMCJ33C-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ33C-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 SMCJ33C-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ33C-E3/57T?
All SMCJ33C-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ33C-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 SMCJ33C-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ33C-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ33C-E3/57T Tags
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