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Taiwan Semiconductor Corporation SMCJ36C
- Part No.:
- SMCJ36C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ36C.pdf
- Description:
- 1500W, 44.5V, 10%, BIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:6,547
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Product details
Overview
SMCJ36C 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), 40–48.9V breakdown voltage (VBR), and 64.3V maximum clamping voltage (VC) at 24A peak pulse current - designed for ESD and electrical fast transient protection in automotive power rails and industrial I/O interfaces.
For engineers reviewing the SMCJ36C datasheet, SMCJ36C pinout, SMCJ36C application, or SMCJ36C 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 DO-214AB thermal performance (RθJA = 55°C/W).
Technical Context
The SMCJ36C is a unidirectional/bidirectional TVS diode configured as a single die in a glass-passivated junction, optimized for high-energy transient suppression without degradation under repetitive surges. Its clamping behavior follows standardized 10/1000µs waveform per R.E.A., with peak pulse power rated at 1500W for tp = 1ms and derated linearly above 25°C ambient.
It operates across –55°C to +150°C junction temperature range, supports 200A non-repetitive forward surge (IFSM), and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements - enabling use in harsh-environment automotive and industrial control modules where reliability under load dump and inductive switching is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 40 V / 48.9 V @ IT = 1 mA - Ensures reliable turn-on within defined tolerance band under standardized test conditions |
| VC @ IPPM | 64.3 V @ 24 A - Clamping voltage during 10/1000µs surge limits downstream IC stress to safe levels |
| PPK | 1500 W - Peak pulse power handling capacity defines survivability against ISO 7637-2 Pulse 5a load dump events |
| IR @ VWM | <1 µA - Ultra-low leakage preserves signal integrity and minimizes standby power loss in always-on circuits |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and enclosed industrial enclosures |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, polarity indicated by cathode band (bidirectional version uses symmetrical marking; no polarity band required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode | Bidirectional transient conduction path | Terminals are functionally symmetric; either terminal serves as input/output for bidirectional clamping - no DC polarity dependency |
| Case | Thermal and mechanical interface | DO-214AB body provides 0.210g mass and 10°C/W junction-to-case thermal resistance for PCB-level heat dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled lines, differential buses, and floating I/O without external polarity management |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) - reduces system-level immunity validation effort |
| Sub-1 ps response time | Clamps transients before propagation into sensitive analog or digital circuitry - critical for protecting high-speed ADCs and CAN transceivers |
| Moisture sensitivity level 1 | Eliminates bake-out requirement prior to reflow, supporting standard SMT assembly without process modification |
Applications
| Automotive Power Rail Protection | Industrial PLC Digital I/O |
|---|---|
Use Scenario: Protecting 12V/24V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed at power entry point to clamp ±100V spikes to ≤64.3V within nanoseconds. Use Value: Prevents latch-up or permanent damage to PMICs and microcontrollers during ISO 7637-2 Pulse 5a events up to 1500W. | Use Scenario: Shielding 24V digital input channels in programmable logic controllers from field-wiring ESD and inductive kickback. IC Role / Device Role / Timing Role: Standoff device absorbing >20A transients while maintaining <1µA leakage during normal operation. Use Value: Eliminates need for discrete RC snubbers and enables direct connection to optocoupler inputs without signal distortion. |
| LED Driver Surge Suppression | RS-485 Transceiver Interface |
Use Scenario: Safeguarding constant-current LED drivers in streetlight systems exposed to lightning-induced surges on long feeder lines. IC Role / Device Role / Timing Role: Primary clamping element across driver output terminals, conducting bidirectionally during both positive and negative transients. Use Value: Maintains luminous output stability by limiting voltage excursions to 64.3V - below MOSFET drain-source breakdown and controller overvoltage thresholds. | Use Scenario: Protecting half-duplex RS-485 transceivers (e.g., THVD1550) connected to noisy factory-floor cabling. IC Role / Device Role / Timing Role: Common-mode TVS across A/B bus lines referenced to ground, clamping differential and common-mode transients simultaneously. Use Value: Preserves data integrity by holding bus voltage within ±12V common-mode range during 4kV EFT bursts per IEC 61000-4-4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ36CA | Same DO-214AC (SMA) package; 64.5V VC @ 24A; 1500W PPK; slightly higher RθJA (65°C/W) | Lower power density due to smaller SMA package - requires larger copper area for thermal management | Select when footprint compatibility with legacy SMA designs is required and board space permits additional thermal relief. |
| Vishay SMA6J36CA | DO-214AC (SMA) package; 64.3V VC @ 24A; 600W PPK (not 1500W); lower surge rating | Not suitable for ISO 7637-2 Pulse 5a; limited to IEC 61000-4-2/4-4 level 4 ESD only | Choose only for cost-sensitive consumer-grade applications where full automotive surge immunity is not mandated. |
Compared with SMAJ36CA and SMA6J36CA, the SMCJ36C delivers identical clamping performance but in a larger DO-214AB (SMC) package enabling superior thermal dissipation (RθJA = 55°C/W vs. 65°C/W) and full 1500W ISO 7637-2 compliance - making it the preferred choice for automotive and industrial power rail protection.
Availability
SMCJ36C is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O protection, LED driver surge suppression, and RS-485 interface hardening requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ36C 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 belongs to TSC's high-power surface-mount TVS portfolio, engineered specifically for automotive and industrial transient immunity compliance - emphasizing robustness under ISO 7637-2, low leakage, and repeatable clamping performance across temperature.
FAQ
What does the 'C' suffix indicate in SMCJ36C?
The 'C' suffix in SMCJ36C denotes a bidirectional configuration - meaning the device clamps transients equally in both polarities, with symmetrical VBR and VC characteristics. Unlike unidirectional SMCJ36A (which has a cathode band), SMCJ36C has no polarity marking and is used where AC signals or floating lines require protection without DC bias constraints. This makes SMCJ36C ideal for differential bus protection like RS-485 or Ethernet PHY interfaces.
Does SMCJ36C meet automotive transient standards?
Yes, SMCJ36C meets ISO 7637-2 Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) requirements - verified per manufacturer test data. It is not rated for Pulse 5a (load dump) at full 1500W without external impedance limiting, but its 64.3V clamping voltage ensures downstream components remain within safe operating area during such events when used with appropriate series impedance.
What is the maximum clamping voltage of SMCJ36C and at what current?
The maximum clamping voltage (VC) of SMCJ36C is 64.3 V, measured at a peak pulse current (IPPM) of 24 A under the standardized 10/1000 µs waveform. This value is guaranteed across –55°C to +150°C junction temperature range and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring compatibility with 3.3V, 5V, and 24V logic and power domains.
Can SMCJ36C replace SMCJ36A in a design?
No - SMCJ36C and SMCJ36A are not interchangeable without layout review. SMCJ36A is unidirectional (cathode-banded) and intended for DC-biased lines; SMCJ36C is bidirectional (no cathode band) and used where polarity is undefined or alternating. Substituting one for the other may result in improper clamping or failure to protect during reverse-polarity transients. Always verify circuit topology and transient directionality before replacement.
What is the thermal resistance and how does it affect SMCJ36C layout?
SMCJ36C has a junction-to-ambient thermal resistance (RθJA) of 55°C/W and junction-to-case (RθJC) of 10°C/W in DO-214AB (SMC) package. To maintain TJ ≤ 150°C under 1500W surge, PCB copper area must be sufficient to dissipate heat - typically ≥200 mm² of 2 oz copper per pad with thermal vias. Insufficient copper increases steady-state temperature rise and reduces surge repetition rate capability.
SMCJ36C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- SMCJ
- 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:
- 64.3V
- Current - Peak Pulse (10/1000µs):
- 24A
- 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 (SMC)
SMCJ36C FAQ
1.How can I place an order for SMCJ36C through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ36C 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 SMCJ36C reliable?
The price and inventory of SMCJ36C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ36C is usually 5 days.
3.What payment methods are accepted for SMCJ36C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ36C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ36C?
SMCJ36C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ36C 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 SMCJ36C?
For technical support, including SMCJ36C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ36C requirements.
6.How does Aetrix verify that SMCJ36C is sourced from the original manufacturer or authorized distributors?
All SMCJ36C 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 SMCJ36C meets industry standards.
7.What is the process for return or replacement of SMCJ36C?
All SMCJ36C units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ36C, 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 SMCJ36C part is unused and in its original packaging.
Return procedure for SMCJ36C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ36C Tags
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