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Vishay General Semiconductor - Diodes Division SMCJ36-E3/9AT
- Part No.:
- SMCJ36-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ36-E3/9AT.pdf
- Description:
- TVS DIODE 36VWM 64.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,783
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Product details
Overview
SMCJ36-E3/9AT 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 36 V stand-off voltage (VWM), 40.0–44.2 V breakdown voltage (VBR), 58.1 V clamping voltage (VC) at 25.8 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed on power rails and signal lines in automotive ECUs and industrial motor drives.
For engineers reviewing the SMCJ36-E3/9AT datasheet, SMCJ36-E3/9AT pinout, SMCJ36-E3/9AT application, or SMCJ36-E3/9AT equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, RoHS-compliant matte tin plating, and MSL Level 1 moisture sensitivity rating for high-reliability surface-mount assembly.
Technical Context
The SMCJ36-E3/9AT operates as a silicon avalanche diode that enters breakdown when reverse voltage exceeds its VBR range (40.0–44.2 V), clamping transients to ≤58.1 V at 25.8 A. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1 ns), critical for protecting MOSFET gates and microcontroller I/O against ESD and inductive switching spikes.
Thermally, it exhibits RθJA = 75 °C/W and RθJL = 15 °C/W, enabling reliable operation up to 150 °C junction temperature when mounted on 8.0 mm × 8.0 mm copper pads. The device is rated for 200 A non-repetitive forward surge (IFSM, 8.3 ms half-sine) and meets UL 497B recognition under file E136766.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 40.0 V / 44.2 V - guaranteed breakdown threshold range at 1 mA test current |
| VC @ IPPM | 58.1 V - clamped voltage during 1500 W transient, limiting stress on downstream ICs |
| IPPM | 25.8 A - peak surge current supported with 10/1000 µs waveform |
| PPPM | 1500 W - transient energy handling capacity per single event |
| TJ max | +150 °C - maximum junction temperature enabling use in under-hood automotive environments |
| ID @ VWM | ≤1.0 µA - ultra-low leakage preserves battery life in always-on circuits |
Pinout & Package
Package: DO-214AB (SMCJ), 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 conduction terminal | Connected to ground or lower-potential rail in unidirectional TVS configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 36 V supply rail); band-marked end identifies this pin |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term leakage performance across thermal and aging stress |
| MSL Level 1 (260 °C peak) | Enables standard reflow soldering without pre-baking, reducing manufacturing complexity |
| UL 497B recognized (E136766) | Meets safety standards for telecom and industrial surge protectors, simplifying system-level certification |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast transients, improving protection margin |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Digital Input Module |
|---|---|
Use Scenario: Protecting 36 V CAN bus power rail and microcontroller GPIOs from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between 36 V supply and ground, absorbing >1000 W surges within nanoseconds. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic interfaces during ISO 7637-2 Pulse 5a events. | Use Scenario: Safeguarding 24–48 V DC digital input channels from field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across input terminals to shunt inductive kickback from solenoid drivers. Use Value: Maintains functional safety integrity (IEC 61000-4-5 Level 4) without derating or parallel staging. |
| Telecom Power Supply Front-End | Consumer Appliance Motor Drive Board |
Use Scenario: Secondary-side overvoltage suppression on 36 V auxiliary bias rail feeding PoE controller ICs and optocouplers. IC Role / Device Role / Timing Role: Fast-clamping TVS placed after DC/DC converter output filter to limit transient propagation. Use Value: Enables compliance with UL 60950-1 and IEC 62368-1 insulation coordination requirements. | Use Scenario: Protecting gate drivers and bootstrap circuits in BLDC motor inverters subjected to back-EMF spikes during commutation. IC Role / Device Role / Timing Role: Unidirectional suppressor tied between high-side gate driver supply and ground to clamp negative excursions. Use Value: Eliminates need for external snubbers while preserving gate oxide integrity under repetitive 1500 W pulses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/61T | Lower PPPM (400 W), smaller DO-214AC (SMA) package, same VWM/VBR/VC specs | Not suitable for 1500 W load-dump events; limited to low-energy ESD and signal-line protection | Select only when board space is constrained and surge energy is <400 W |
| SMCJ36AHE3/9AT | Identical electrical specs but AEC-Q101 qualified version with HE3 suffix; same DO-214AB package | Required for automotive OEM designs requiring full AEC-Q101 documentation and traceability | Choose SMCJ36AHE3/9AT if automotive PPAP submission or zero-defect field reliability is mandated |
Compared with SMAJ36A-E3/61T and SMCJ36AHE3/9AT, the SMCJ36-E3/9AT delivers full 1500 W surge capability in a robust DO-214AB package while meeting commercial-grade AEC-Q101 requirements - making it optimal for cost-sensitive automotive and industrial applications where qualification evidence is beneficial but not mandatory.
Availability
SMCJ36-E3/9AT is available at Aetrix Electronics and suitable for automotive engine control units, industrial programmable logic controllers, and telecom power supply front-ends requiring stable component supply across multi-year production cycles.
Supply support for SMCJ36-E3/9AT 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 optimization.
The SMCJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where robustness against load dump, ESD, and lightning-induced surges is mission-critical.
FAQ
What is the clamping voltage of the SMCJ36-E3/9AT at its rated peak pulse current?
The SMCJ36-E3/9AT has a maximum clamping voltage (VC) of 58.1 V at its rated peak pulse current (IPPM) of 25.8 A with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during a transient event. The SMCJ36-E3/9AT maintains this clamping performance consistently due to its glass-passivated silicon junction and low incremental surge resistance.
Is the SMCJ36-E3/9AT suitable for automotive applications?
Yes, the SMCJ36-E3/9AT is AEC-Q101 qualified and meets UL 497B recognition (file E136766), making it suitable for automotive applications such as engine control units and body electronics. While the HE3-suffix variant provides full AEC-Q101 documentation, the SMCJ36-E3/9AT shares identical electrical and thermal specifications and is widely used in Tier-2 automotive subsystems where qualification evidence is beneficial but not contractually required. Its 150 °C TJ max and MSL Level 1 rating further support under-hood deployment.
What does the "-E3/9AT" suffix indicate in SMCJ36-E3/9AT?
The "-E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting JESD 201 Class 1A whisker resistance. The "/9AT" indicates packaging in 13-inch diameter plastic tape and reel, containing 3500 units per reel - optimized for high-volume automated SMT placement. This ordering code distinguishes it from variants like /57T (7-inch reel, 850 units) and HE3-suffix parts (AEC-Q101 qualified). The SMCJ36-E3/9AT is fully compatible with standard reflow profiles.
How does the SMCJ36-E3/9AT differ from bi-directional TVS diodes like SMCJ36CA?
The SMCJ36-E3/9AT is unidirectional and functions only in reverse breakdown, with polarity marked by a cathode band; it blocks forward current above ~3.5 V. In contrast, SMCJ36CA is bi-directional, symmetrically clamping both positive and negative transients without polarity marking. The SMCJ36-E3/9AT offers lower leakage (<1.0 µA vs. up to 2.0 µA for CA types at VWM) and is preferred for DC power rail protection, whereas SMCJ36CA suits AC-coupled or floating signal lines. Both share identical VWM, VBR, VC, and PPPM ratings.
What thermal derating applies to the SMCJ36-E3/9AT above 25 °C ambient?
The SMCJ36-E3/9AT must be derated linearly above TA = 25 °C per Figure 2 in Vishay document 88394: its peak pulse power (PPPM) decreases by approximately 0.8% per °C rise, reaching ~75% of 1500 W at 100 °C ambient. This derating stems from its RθJA of 75 °C/W and is validated for mounting on 8.0 mm × 8.0 mm copper pads. For sustained power dissipation (PD), the 6.5 W rating at TA = 50 °C also applies, requiring heatsinking or airflow in high-power-density layouts using the SMCJ36-E3/9AT.
SMCJ36-E3/9AT 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):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 64.3V
- Current - Peak Pulse (10/1000µs):
- 23.3A
- 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)
SMCJ36-E3/9AT FAQ
1.How can I place an order for SMCJ36-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ36-E3/9AT 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 SMCJ36-E3/9AT reliable?
The price and inventory of SMCJ36-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ36-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ36-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ36-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ36-E3/9AT?
SMCJ36-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ36-E3/9AT 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 SMCJ36-E3/9AT?
For technical support, including SMCJ36-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ36-E3/9AT requirements.
6.How does Aetrix verify that SMCJ36-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ36-E3/9AT 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 SMCJ36-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ36-E3/9AT?
All SMCJ36-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ36-E3/9AT, 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 SMCJ36-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ36-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ36-E3/9AT Tags
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