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Taiwan Semiconductor Corporation SMCJ36H
- Part No.:
- SMCJ36H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ36H.pdf
- Description:
- 1500W, 44.5V, 10%, UNIDIRECTIONA
- Quantity:
- Payment:
- Shipping:
Inventory:9,078
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Product details
Overview
SMCJ36H from Taiwan Semiconductor is a unidirectional 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 to protect automotive power rails and industrial I/O interfaces against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the SMCJ36H datasheet, SMCJ36H pinout, SMCJ36H application, or SMCJ36H equivalent, this device is evaluated for ESD and surge immunity in 12V/24V vehicle subsystems, telecom line cards, and programmable logic controller (PLC) analog input modules where fast response (<1.0 ps), low leakage (<1 µA @ 36V), and AEC-Q101 qualification are critical selection criteria.
Technical Context
The SMCJ36H employs a glass-passivated silicon junction optimized for high-energy transient suppression in unidirectional configurations. Its thermal design supports 150°C junction operation with RθJC = 10°C/W and RθJA = 55°C/W, enabling reliable performance under sustained ambient temperatures up to +125°C in enclosed enclosures.
It meets ISO 7637-2 test requirements for automotive load-dump and inductive-switching transients without external series impedance, delivering clamping within 64.3V at 24A (10/1000 µs waveform) while maintaining <1 µA reverse leakage at rated VWM - confirming suitability for low-power sensor signal conditioning paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping initiates; sets system-level overvoltage trip threshold |
| VBR min/max | 40 V / 48.9 V @ 1 mA - Confirmed breakdown range ensures consistent turn-on across production lots |
| VC @ IPPM | 64.3 V @ 24 A (10/1000 µs) - Clamping voltage defines worst-case stress on downstream ICs during surge events |
| PPK | 1500 W - Peak pulse power rating determines survivability against standardized automotive transients |
| IR @ VWM | <1 µA - Ultra-low leakage preserves signal integrity in high-impedance sensor bias networks |
| TJ max | +150 °C - Enables use in engine bay or industrial motor drive environments without derating |
| Package | DO-214AB (SMC) - Standardized surface-mount footprint compatible with automated reflow assembly |
Pinout & Package
DO-214AB (SMC) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band; weight ≈ 0.210 g; UL 94V-0 rated compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path | Connected to ground or low-impedance reference plane; carries full surge current during clamping |
| Cathode | Protected line connection | Connected to the line being protected (e.g., 24V rail); reverse-biased during normal operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD47 |
| Clamping response time | <1.0 ps - Ensures protection activation before transient energy couples into sensitive circuitry |
| ISO 7637-2 compliance | Passes Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (capacitive coupling) waveforms |
| Glass passivated junction | Provides stable VBR tolerance and long-term leakage stability under humidity and thermal stress |
| Moisture sensitivity level 1 | Zero bake requirement prior to reflow; supports standard SMT assembly without dry-pack handling |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting LIN bus transceivers and door actuator drivers from battery load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12V supply rail and ground, clamping transients before they reach MCU I/O pins. Use Value: Limits voltage excursion to ≤64.3V during 1500W surges, preventing latch-up or gate oxide damage in 3.3V/5V interface ICs. | Use Scenario: Shielding 4–20 mA current loop inputs from field-induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Primary overvoltage clamp on the loop supply line, positioned upstream of precision op-amps and ADC front-ends. Use Value: Maintains <1 µA leakage at 36V VWM to avoid introducing offset error in µA-level loop current measurement. |
| Telecom Power Feeding Interface | Smart Energy Meter Voltage Monitoring |
Use Scenario: Safeguarding PoE-powered remote units connected to outdoor copper lines susceptible to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-stage TVS on DC feed line after primary gas discharge tube, absorbing residual energy. Use Value: Delivers 64.3V clamping at 24A with sub-nanosecond response, ensuring coordination with upstream GDT without overshoot. | Use Scenario: Protecting AC mains voltage sensing circuitry in DIN-rail mounted meters exposed to grid switching transients. IC Role / Device Role / Timing Role: Standoff-rated TVS across transformer secondary or resistive divider output feeding MCU ADC. Use Value: With 36V VWM and 40V VBR, it remains fully inactive during nominal 32V peak rectified signals while triggering reliably above 48V fault thresholds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A | 600W rating, SMB package (smaller footprint), lower IPPM (13.3A), higher VC (69.4V) | Lower power handling limits use to less severe transients; not suitable for ISO 7637-2 Pulse 5a (load dump) | Select when board space is constrained and surge energy is limited to IEC 61000-4-5 Level 3 (0.5 kV) |
| 1.5KE36A | Through-hole TO-218 package, same 1500W rating but slower response (~1 ns), higher IR (5 µA @ 36V) | Requires manual or wave soldering; unsuitable for high-density automated PCBs | Choose only for legacy through-hole designs or where thermal mass improves long-duration surge endurance |
Compared with SMBJ36A and 1.5KE36A, the SMCJ36H offers superior surge robustness in surface-mount form factor - combining AEC-Q101 qualification, DO-214AB mechanical reliability, and tighter clamping (64.3V vs. 69.4V/72.2V) - making it optimal for new automotive and industrial designs requiring automated assembly and ISO-compliant immunity.
Availability
SMCJ36H is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O protection, and telecom power interface designs requiring stable component supply, AEC-Q101 compliance, and repeatable clamping performance across temperature.
Supply support for SMCJ36H 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, and rectifiers with global distribution and AEC-Q101 validation capability.
The SMCJ36H belongs to TSC's SMCJ-H series of high-power surface-mount TVS diodes engineered specifically for automotive and industrial transient immunity - emphasizing low clamping ratio, fast response, and robust thermal performance in DO-214AB packaging.
FAQ
What is the clamping voltage of SMCJ36H and how is it measured?
The SMCJ36H has a maximum clamping voltage (VC) of 64.3 V, measured at a peak pulse current (IPPM) of 24 A using the standardized 10/1000 µs double-exponential waveform per IEC 61000-4-5. This value represents the highest voltage seen across the device terminals during a transient event and directly determines the protection margin for downstream components. The SMCJ36H achieves this clamping performance while maintaining unidirectional operation and AEC-Q101 qualification - critical for automotive 24V system designs.
Is SMCJ36H suitable for bidirectional transient protection?
No, the SMCJ36H is a unidirectional TVS diode intended for DC line protection where polarity is fixed. For bidirectional applications such as AC lines or data buses, TSC offers the SMCJ36CH variant (with CH suffix), which provides symmetrical clamping in both directions. Using SMCJ36H in reverse-biased AC scenarios risks forward conduction and failure; always verify polarity alignment and select CH-suffixed parts for true bidirectional immunity.
Does SMCJ36H meet automotive qualification standards?
Yes, the SMCJ36H is AEC-Q101 qualified and explicitly tested to meet ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transient immunity requirements. Its glass-passivated junction, moisture sensitivity level 1 rating, and guaranteed performance from −55°C to +150°C junction temperature confirm suitability for under-hood and chassis-mounted automotive modules. Documentation of test reports and qualification summaries is available upon request for SMCJ36H.
What is the reverse leakage current specification for SMCJ36H at its working voltage?
The SMCJ36H exhibits a maximum reverse leakage current (IR) of 1 µA when biased at its rated working stand-off voltage (VWM) of 36 V, measured at 25°C. This ultra-low leakage ensures minimal impact on high-impedance circuits such as sensor bias networks or precision voltage dividers. At elevated temperatures (e.g., 85°C), leakage remains well below 5 µA - preserving accuracy in analog monitoring paths where SMCJ36H is commonly deployed.
How does the SMCJ36H compare to the SMCJ36AH variant?
The SMCJ36AH differs from SMCJ36H in tighter breakdown voltage tolerance: SMCJ36H specifies VBR = 40–48.9 V, while SMCJ36AH narrows it to 40–44.2 V. Both share identical VWM (36 V), VC (58.1 V for SMCJ36AH vs. 64.3 V for SMCJ36H), and packaging. The SMCJ36AH offers lower clamping voltage and more predictable turn-on, making it preferable in noise-sensitive applications; the SMCJ36H provides broader VBR range for cost-optimized designs where slight variation is acceptable.
SMCJ36H 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:
- 1
- Bidirectional Channels:
- -
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ36H FAQ
1.How can I place an order for SMCJ36H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ36H 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 SMCJ36H reliable?
The price and inventory of SMCJ36H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ36H is usually 5 days.
3.What payment methods are accepted for SMCJ36H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ36H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ36H?
SMCJ36H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ36H 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 SMCJ36H?
For technical support, including SMCJ36H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ36H requirements.
6.How does Aetrix verify that SMCJ36H is sourced from the original manufacturer or authorized distributors?
All SMCJ36H 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 SMCJ36H meets industry standards.
7.What is the process for return or replacement of SMCJ36H?
All SMCJ36H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ36H, 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 SMCJ36H part is unused and in its original packaging.
Return procedure for SMCJ36H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ36H Tags
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