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Taiwan Semiconductor Corporation SMCJ36CA
- Part No.:
- SMCJ36CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ36CA.pdf
- Description:
- TVS DIODE 36VWM 58.1VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:23,145
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Product details
Overview
SMCJ36CA from Taiwan Semiconductor is a bidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 36V working stand-off voltage (VWM), 40–44.2V breakdown voltage (VBR), and 58.1V maximum clamping voltage (VC) at 27A peak pulse current - designed for automotive load-dump and ESD protection in power supply rails and I/O interfaces.
For engineers reviewing the SMCJ36CA datasheet, SMCJ36CA pinout, SMCJ36CA application, or SMCJ36CA equivalent, key selection criteria include bidirectional clamping capability, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, sub-1ps response time, <1µA reverse leakage above 10V, and UL 94V-0 molded case - critical for robust transient immunity in automotive ECUs and industrial controllers.
Technical Context
The SMCJ36CA employs a glass-passivated silicon junction optimized for fast avalanche response (<1.0ps from 0V to VBR min) and stable clamping under repetitive transients. Its bidirectional configuration enables symmetrical protection of AC-coupled or floating signal lines without polarity constraints.
Thermally, it features RθJA = 55°C/W and RθJC = 10°C/W, supporting 5W steady-state dissipation at 25°C ambient. It operates across –55°C to +150°C junction temperature range and meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 40.0 / 44.2 V @ IT = 1 mA - guaranteed avalanche onset range for reliable turn-on threshold |
| VC @ IPPM | 58.1 V @ 27 A - clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPK | 1500 W - peak pulse power handling per single 1 ms transient per Fig.5 waveform |
| IR @ VWM | <1 µA - negligible standby leakage, preserving low-power circuit integrity |
| Package | DO-214AB (SMC) - industry-standard surface-mount outline with 0.210 g mass and matte tin leads |
Pinout & Package
DO-214AB (SMC) package: surface-mount, dual-leaded, cathode-banded case. Polarity marked by band; bidirectional operation means both terminals are functionally symmetric - no anode/cathode assignment required in circuit design.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (marked side) | Transient return path (bidirectional) | Functions identically as cathode; band denotes terminal orientation only, not polarity dependency |
| Cathode (unmarked side) | Transient return path (bidirectional) | Electrically interchangeable with marked terminal; clamping occurs symmetrically across both terminals |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over lifetime and improved humidity resistance vs. epoxy-passivated alternatives |
| ISO 7637-2 compliance | Validated for automotive Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (load dump) immunity |
| Sub-1ps response time | Clamps transients before sensitive logic or analog circuitry can be damaged - critical for CAN/LIN bus protection |
| UL 94V-0 molding compound | Self-extinguishing encapsulation meets flame-retardancy requirements for automotive and industrial enclosures |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller GPIOs from battery line transients during ignition cycling and load dump. IC Role / Device Role: Bidirectional clamping element placed between LIN line and ground, shunting surges exceeding 36V. Use Value: Limits voltage seen by transceiver IC to ≤58.1V during 27A 10/1000µs pulses, preventing latch-up or permanent damage. | Use Scenario: Safeguarding 24V DC digital input channels on programmable logic controllers exposed to relay coil flyback and EFT bursts. IC Role / Device Role: Parallel-connected TVS across input optocoupler inputs to clamp induced spikes before signal conditioning stage. Use Value: Maintains <1µA leakage at 24V nominal, avoiding false triggering while clamping 1500W surges to safe levels. |
| LED Driver Power Input Stage | RS-485 Transceiver Bus Line Protection |
Use Scenario: Front-end protection of constant-current LED drivers subjected to 12V/24V rail disturbances in commercial lighting systems. IC Role / Device Role: Standoff-rated TVS placed across bulk capacitor input to absorb switching noise and lightning-induced surges. Use Value: Withstands 1500W peak pulses without degradation, enabling compliance with IEC 61000-4-5 Level 3 (1kV/2kV) surge testing. | Use Scenario: Differential line protection for RS-485 transceivers in factory automation networks subject to ESD and cable discharge events. IC Role / Device Role: Bidirectional TVS connected between A/B lines and ground to suppress common-mode transients up to ±36V standoff. Use Value: Symmetrical clamping ensures equal protection on both data lines, preserving signal integrity during ±15kV contact ESD per IEC 61000-4-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA (Bourns) | Same VWM/VBR/VC specs but 600W PPK rating and SMB package (smaller footprint, higher thermal resistance) | Limited to lower-energy transients; unsuitable for full ISO 7637-2 Pulse 5a (load dump) | Select SMCJ36CA when 1500W surge handling and DO-214AB mechanical robustness are required |
| P6SMB36CA (Littelfuse) | Identical electrical specs and DO-214AA (SMB) package - lower PPK (600W) and different thermal performance (RθJA = 85°C/W) | Not rated for automotive load dump; intended for consumer-grade ESD/IEC 61000-4-2 only | Choose SMCJ36CA for automotive-grade reliability, validated ISO 7637-2 compliance, and superior thermal margin |
Compared with SMBJ36CA and P6SMB36CA, the SMCJ36CA delivers 2.5× higher peak power handling, lower clamping voltage under identical current, and proven suitability for harsh automotive environments - making it the preferred choice where sustained surge energy and thermal stability are critical.
Availability
SMCJ36CA is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, LED driver front-ends, and RS-485 communication interfaces requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ36CA 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs - headquartered in Hsinchu, Taiwan, with global distribution and AEC-Q101 qualified product lines.
The SMCJ series is part of TSC's high-reliability transient suppression portfolio, engineered specifically for automotive and industrial applications demanding ISO 7637-2 compliance, extended temperature operation, and robust surge immunity in compact surface-mount packages.
FAQ
What does the 'CA' suffix indicate in SMCJ36CA?
The 'CA' suffix in SMCJ36CA denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities, unlike unidirectional variants (e.g., SMCJ36A). This makes SMCJ36CA ideal for protecting AC-coupled signals, differential buses like RS-485, or floating power domains where polarity reversal may occur. The device has no designated anode or cathode for functional operation.
Does SMCJ36CA meet automotive transient immunity standards?
Yes, SMCJ36CA is explicitly rated to meet ISO 7637-2 for automotive applications, covering Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnection), and Pulse 3a/3b (capacitive coupling and ignition noise). Its 1500W peak power rating, fast <1ps response, and stable clamping ensure compliance with OEM-level surge immunity requirements in ECUs and body control modules.
What is the maximum clamping voltage of SMCJ36CA and at what test condition?
The maximum clamping voltage of SMCJ36CA is 58.1 V, measured at a peak pulse current (IPPM) of 27 A using the standardized 10/1000 µs double-exponential surge waveform per Fig.5 in the datasheet. This value defines the upper voltage limit imposed on protected circuitry during worst-case transient events, ensuring downstream components remain within safe operating limits.
Can SMCJ36CA be used in place of a unidirectional TVS like SMCJ36A?
SMCJ36CA can replace SMCJ36A in most applications, but only if bidirectional clamping is acceptable or required - for example, in AC signal paths or differential interfaces. However, SMCJ36CA exhibits slightly higher leakage near VWM due to its symmetrical structure, and its forward voltage drop differs in DC bias conditions. Always verify system-level polarity constraints and leakage budget before substitution.
What is the thermal resistance and maximum junction temperature of SMCJ36CA?
SMCJ36CA has a junction-to-ambient thermal resistance (RθJA) of 55°C/W and junction-to-case resistance (RθJC) of 10°C/W, enabling 5W steady-state power dissipation at 25°C ambient. Its maximum rated junction temperature is +150°C, with operational storage range from –55°C to +150°C - supporting use in under-hood automotive and high-temperature industrial environments where thermal management is critical for long-term reliability of SMCJ36CA.
SMCJ36CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ36CA FAQ
1.How can I place an order for SMCJ36CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ36CA 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 SMCJ36CA reliable?
The price and inventory of SMCJ36CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ36CA is usually 5 days.
3.What payment methods are accepted for SMCJ36CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ36CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ36CA?
SMCJ36CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ36CA 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 SMCJ36CA?
For technical support, including SMCJ36CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ36CA requirements.
6.How does Aetrix verify that SMCJ36CA is sourced from the original manufacturer or authorized distributors?
All SMCJ36CA 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 SMCJ36CA meets industry standards.
7.What is the process for return or replacement of SMCJ36CA?
All SMCJ36CA units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ36CA, 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 SMCJ36CA part is unused and in its original packaging.
Return procedure for SMCJ36CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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