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Vishay General Semiconductor - Diodes Division SMCJ36A-E3/57T
- Part No.:
- SMCJ36A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ36A-E3/57T.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,846
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Product details
Overview
SMCJ36A-E3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning surges. It features a 36 V standoff voltage (VWM), 40.0–44.2 V breakdown voltage (VBR) at 1 mA, 58.1 V maximum clamping voltage (VC) at 25.8 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform.
For engineers reviewing the SMCJ36A-E3/57T datasheet, SMCJ36A-E3/57T pinout, SMCJ36A-E3/57T application, or SMCJ36A-E3/57T equivalent, key selection criteria include clamping performance under 25.8 A surge, thermal resistance (RθJA = 75 °C/W), unidirectional polarity marking (cathode band), RoHS-compliant matte tin plating, and suitability for automotive-grade designs when ordered with HE3 suffix.
Technical Context
The SMCJ36A-E3/57T employs a glass passivated silicon junction optimized for fast transient response (<1 ps) and low incremental surge resistance. Its clamping behavior is characterized by a 58.1 V VC at IPPM = 25.8 A under standardized 10/1000 μs waveform conditions, with temperature coefficient of VBR at +0.100 %/°C.
It operates across -55 °C to +150 °C junction temperature range and meets MSL Level 1 per J-STD-020 with peak reflow temperature up to 260 °C. The device is rated for 200 A non-repetitive forward surge current (IFSM) and exhibits ≤1.0 μA reverse leakage at VWM = 36 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal line operating margin. |
| VBR min/max | 40.0 V / 44.2 V at IT = 1 mA - Confirmed breakdown threshold range; ensures reliable turn-on during overvoltage events. |
| VC @ IPPM | 58.1 V at 25.8 A - Clamped voltage seen by protected circuit during full-rated 1500 W transient; critical for downstream IC survivability. |
| PPPM | 1500 W - Peak pulse power handling capability with 10/1000 μs waveform; determines robustness against lightning and EFT. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on standard 8.0 mm × 8.0 mm copper pads; guides PCB thermal layout. |
| TJ max | +150 °C - Maximum allowable junction temperature; sets upper limit for ambient + self-heating in high-power surge scenarios. |
| Polarity | Unidirectional - Cathode marked with band; enables DC-biased protection without reverse conduction path. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to lower-potential side of protected line; forms conduction path during reverse overvoltage. |
| Cathode | Reverse-biased terminal (marked with band) | Connected to higher-potential side (e.g., VCC or signal line); initiates clamping when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMC package | Enables automated placement and space-constrained board layouts while maintaining 1500 W surge rating. |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress and humidity exposure. |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C without preconditioning, simplifying manufacturing flow for commercial-grade builds. |
| 0.100 %/°C VBR tempco | Minimizes drift in clamping threshold across automotive (-40 °C to +125 °C ambient) and industrial temperature ranges. |
| RoHS-compliant (E3 suffix) | Meets global environmental compliance requirements without halogen content restrictions (distinct from M3 variant). |
Applications
| Automotive Power Line Protection | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs and body control modules from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp spikes above 36 V. Use Value: Limits voltage to ≤58.1 V during 25.8 A surge, preventing damage to 36 V-rated CAN transceivers and microcontrollers. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS on differential or single-ended signal lines upstream of ADC inputs. Use Value: Sub-μA leakage at 36 V ensures minimal signal offset; fast response preserves integrity of <1 MHz sensor waveforms. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drive Circuits |
|
Use Scenario: Safeguarding PoE-powered Ethernet switches and base station power inputs against lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V DC input rails, coordinated with upstream GDTs and downstream filters. Use Value: 1500 W PPPM rating handles IEC 61000-4-5 Level 4 (4 kV) surges without degradation when mounted on 8 mm² copper pads. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Across-the-line TVS on motor terminals to absorb energy from L·di/dt spikes during commutation. Use Value: 200 A IFSM rating withstands repetitive 8.3 ms half-sine surges typical of motor startup, extending system MTBF. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/61 | Lower PPPM (400 W), SMA package (DO-214AC), RθJA = 95 °C/W, same VWM/VBR/VC specs. | Reduced surge handling; suitable only for low-energy ESD or localized signal-line protection. | Select when board space is tighter and surge threat level is limited to IEC 61000-4-2 ±8 kV contact discharge. |
| SMCJ36CA-E3/57T | Bidirectional variant; identical VWM (36 V), VBR (40.0–44.2 V), VC (58.1 V), but symmetric clamping in both polarities. | Required for AC-coupled or floating signal paths where reverse polarity transients occur (e.g., RS-485, audio lines). | Choose when protecting bidirectional interfaces; note that SMCJ36A-E3/57T cannot replace SMCJ36CA-E3/57T in such circuits. |
Compared with SMAJ36A-E3/61, the SMCJ36A-E3/57T delivers 3.75× higher surge power handling and superior thermal dissipation due to larger SMC package; versus SMCJ36CA-E3/57T, it offers lower cost and simpler biasing for DC rails but lacks reverse-polarity clamping capability.
Availability
SMCJ36A-E3/57T is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface design, telecom DC feed protection, and consumer appliance motor drive circuits requiring stable component supply and traceable sourcing.
Supply support for SMCJ36A-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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMCJ series is engineered for high-energy transient suppression in harsh environments-targeting automotive, industrial, and telecom systems where robustness against lightning, EFT, and load dump is mission-critical.
FAQ
What is the maximum clamping voltage of the SMCJ36A-E3/57T under full-rated surge current?
The SMCJ36A-E3/57T has a maximum clamping voltage (VC) of 58.1 V at 25.8 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured under standardized test conditions on 8.0 mm × 8.0 mm copper pads and defines the highest voltage imposed on the protected circuit during worst-case transient events. The SMCJ36A-E3/57T maintains this clamping performance across its specified operating temperature range.
Is the SMCJ36A-E3/57T suitable for automotive applications?
The SMCJ36A-E3/57T is RoHS-compliant and qualified to MSL Level 1, but it is not AEC-Q101 certified in the E3/57T configuration. For automotive use, Vishay specifies the SMCJ36AHE3 variant (with HE3 suffix), which adds AEC-Q101 qualification. The SMCJ36A-E3/57T remains appropriate for non-safety-critical automotive subsystems where qualification is not mandated, provided thermal and surge margins are validated per application.
How does the SMCJ36A-E3/57T differ from the bidirectional SMCJ36CA-E3/57T?
The SMCJ36A-E3/57T is unidirectional with cathode band marking and conducts only during reverse overvoltage, whereas the SMCJ36CA-E3/57T is bidirectional and clamps in both polarities. Both share identical VWM (36 V), VBR (40.0–44.2 V), and VC (58.1 V) ratings, but the SMCJ36A-E3/57T cannot substitute for SMCJ36CA-E3/57T in AC or floating circuits. The SMCJ36A-E3/57T is preferred for DC power rail protection due to lower cost and simpler layout.
What is the thermal resistance and how does it affect PCB layout for the SMCJ36A-E3/57T?
The SMCJ36A-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. To maintain TJ ≤ 150 °C during repeated surges, PCB layout must provide adequate copper area and minimize trace length to ground. Reducing pad size increases RθJA and risks thermal runaway under sustained surge duty cycles. The SMCJ36A-E3/57T requires no heatsink but benefits from internal layer copper pours connected via multiple vias.
Does the SMCJ36A-E3/57T meet UL recognition standards?
Yes, the SMCJ36A-E3/57T carries Underwriters Laboratories recognition under UL 497B (QVGQ2) and file number E136766 for transient protectors. This certification covers both unidirectional and bidirectional variants in the SMCJ family and confirms compliance with safety requirements for surge protective devices used in telecommunications and electronic equipment. The SMCJ36A-E3/57T's UL listing supports its use in end products requiring regulatory approval.
SMCJ36A-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 25.8A
- 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)
SMCJ36A-E3/57T FAQ
1.How can I place an order for SMCJ36A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ36A-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 SMCJ36A-E3/57T reliable?
The price and inventory of SMCJ36A-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 SMCJ36A-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ36A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ36A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ36A-E3/57T?
SMCJ36A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ36A-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 SMCJ36A-E3/57T?
For technical support, including SMCJ36A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ36A-E3/57T requirements.
6.How does Aetrix verify that SMCJ36A-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ36A-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 SMCJ36A-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ36A-E3/57T?
All SMCJ36A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ36A-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 SMCJ36A-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ36A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ36A-E3/57T Tags
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