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Taiwan Semiconductor Corporation SMDJ36CAH
- Part No.:
- SMDJ36CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMDJ36CAH.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,937
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Product details
Overview
SMDJ36CAH from Taiwan Semiconductor is a bidirectional 3000W transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 36V working stand-off voltage (VWM), 40.0–44.2V breakdown voltage (VBR), and 58.1V maximum clamping voltage (VC) at 51.6A peak pulse current - designed for automotive-grade ESD and load-dump protection in power supply rails and I/O interfaces.
For engineers reviewing the SMDJ36CAH datasheet, SMDJ36CAH pinout, SMDJ36CAH application, or SMDJ36CAH equivalent, key selection criteria include bidirectional clamping performance, AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, fast sub-1ps response time, and DO-214AB thermal resistance (RθJA = 75°C/W).
Technical Context
The SMDJ36CAH implements a glass-passivated silicon avalanche junction optimized for high-energy transient suppression in automotive and industrial environments. It operates bidirectionally with symmetrical VBR min/max (40.0V / 44.2V) and delivers 3000W peak pulse power (10/1000µs waveform) while maintaining low clamping ratio (VC/VBR ≈ 1.33) and <1µA reverse leakage at 36V.
Its thermal design supports continuous operation up to TJ = 175°C, enabled by RθJL = 15°C/W junction-to-lead resistance and UL 94V-0 molding compound. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity - enabling robust reflow compatibility in automated SMT lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum DC or continuous AC operating voltage before conduction begins |
| VBR @ IT=1mA | 40.0–44.2 V - Breakdown threshold where device enters avalanche region; ensures reliable turn-on during transients |
| VC @ IPPM=51.6A | 58.1 V - Clamped voltage seen by protected circuit under 3000W surge; limits stress on downstream ICs |
| PPK | 3000 W - Peak pulse power handling (10/1000µs waveform); supports ISO 7637-2 Pulse 5a (load dump) |
| TJ max | 175 °C - Maximum junction temperature; enables use in under-hood automotive modules without derating |
| Package | DO-214AB (SMC) - Standardized surface-mount outline with 7.11 × 6.22 mm footprint and 2.3 mm height; compatible with IPC-7351B SMC-C |
Pinout & Package
DO-214AB (SMC) package: molded plastic case with matte tin-plated leads, cathode band omitted (bidirectional symmetry), polarity marked per device orientation on tape reel. Weight: 0.290 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient path | No polarity marking required; identical clamping behavior in both directions - simplifies PCB layout and eliminates orientation errors |
| Lead 1 / Lead 2 | Current-carrying terminals | Low-inductance parallel path for surge current; thermal interface to PCB copper pour via soldered leads |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS sensors |
| ISO 7637-2 compliant | Withstands Pulse 1 (inductive load disconnect), Pulse 2a/2b (battery line transients), and Pulse 3a/3b (switching noise) without degradation |
| Clamping ratio VC/VBR ≤ 1.33 | Ensures minimal overvoltage exposure to protected ICs - critical for 3.3V/5V logic and CAN transceivers |
| Fast response time < 1 ps | Activates before most system-level transients propagate - prevents latch-up or gate oxide damage in MOSFET drivers |
| J-STD-020 Level 1 MSL | Zero bake requirement prior to reflow; supports standard lead-free assembly without moisture-related popcorning |
Applications
| Automotive Power Rail Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: 12V battery rail in vehicle infotainment head unit exposed to load dump (ISO 7637-2 Pulse 5a) and jump-start surges. IC Role / Device Role / Timing Role: Primary clamping device placed upstream of DC-DC converter input to limit voltage excursion to ≤60V. Use Value: Prevents destruction of buck controller ICs rated for 42V max input; maintains system uptime during harsh electrical events. | Use Scenario: RS-485 communication port on factory PLC module subjected to ESD (IEC 61000-4-2 ±8kV contact) and cable-induced surges. IC Role / Device Role / Timing Role: Bidirectional TVS shunting common-mode transients between A/B lines and ground. Use Value: Enables uninterrupted data transmission by clamping line-to-line and line-to-ground spikes below transceiver withstand rating (±15V). |
| Telecom DC Power Input | Consumer USB-C Power Delivery Interface |
Use Scenario: 48V DC input stage of PoE-powered wireless access point encountering lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-line defense against differential-mode transients entering via Ethernet magnetics secondary side. Use Value: Absorbs >2500W surge energy without failure, preserving integrity of upstream PoE controller and Ethernet PHY. | Use Scenario: VBUS line in USB-C receptacle on portable monitor facing hot-plug insertion transients and ESD during user handling. IC Role / Device Role / Timing Role: Low-capacitance (CJ ≈ 200 pF typical) bidirectional clamp protecting USB PD controller and power switch FETs. Use Value: Limits VBUS overshoot to <60V during 100ns edge-rate events - avoids triggering overvoltage lockout in PD policy engine. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36CA | Lower PPK = 400W; VBR = 40.0–44.4V; same DO-214AC (SMA) package | Not suitable for ISO 7637-2 Pulse 5a; limited to low-energy ESD and signal-line protection | Select when board space is constrained and surge energy is <500W - e.g., USB data lines or sensor analog inputs |
| TPSMD36C | Same PPK = 3000W; VBR = 40.0–44.2V; AEC-Q101 qualified; DO-214AB package | Identical clamping performance but higher IR (5 µA vs. 1 µA at VWM); slightly higher RθJA (80°C/W) | Valid drop-in alternative if Taiwan Semiconductor supply is constrained; verify leakage impact on ultra-low-power sleep modes |
Compared with SMAJ36CA and TPSMD36C, the SMDJ36CAH provides the optimal balance of high-energy surge capability, automotive qualification, and low leakage - making it the preferred choice for 12V/24V power rail protection where reliability under repeated load dump is mandatory.
Availability
SMDJ36CAH is available at Aetrix Electronics and suitable for automotive power distribution modules, industrial PLC I/O cards, telecom DC power supplies, and consumer USB-C PD implementations requiring stable component supply across multi-year production cycles.
Supply support for SMDJ36CAH 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 headquartered in Hsinchu, Taiwan, specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive, industrial, and computing markets.
The SMDJ series was developed specifically to meet stringent AEC-Q101 and ISO 7637-2 requirements for next-generation automotive electronics - emphasizing high-reliability transient suppression in compact surface-mount packages.
FAQ
What is the maximum clamping voltage of the SMDJ36CAH under a 3000W transient?
The SMDJ36CAH clamps to a maximum of 58.1 V when subjected to its rated 51.6 A peak pulse current (10/1000 µs waveform), corresponding to 3000 W peak power. This value is measured per JEDEC standards and guarantees predictable overvoltage limiting for downstream components such as DC-DC controllers and microcontrollers in the protected circuit.
Is the SMDJ36CAH suitable for bidirectional signal line protection?
Yes, the SMDJ36CAH is explicitly designed for bidirectional operation, with symmetrical breakdown (40.0–44.2 V) and clamping characteristics in both polarities. Its DO-214AB package has no polarity marking, and electrical specifications apply identically in either direction - making it appropriate for protecting balanced interfaces like RS-485, CAN FD, or Ethernet pairs.
Does the SMDJ36CAH meet automotive qualification standards?
Yes, the SMDJ36CAH is AEC-Q101 qualified and fully compliant with ISO 7637-2 test pulses 1, 2a, 2b, 3a, and 3b. These certifications confirm its suitability for deployment in automotive powertrain, chassis, and body electronics systems where reliability under harsh electrical environments is mandatory.
What is the thermal resistance of the SMDJ36CAH, and how does it affect PCB layout?
The SMDJ36CAH has a junction-to-ambient thermal resistance (RθJA) of 75°C/W and junction-to-lead resistance (RθJL) of 15°C/W. To maintain TJ ≤ 175°C during repetitive surges, PCB layout must include ≥250 mm² of 2-oz copper connected to both leads - ensuring effective heat spreading and minimizing thermal derating in enclosed enclosures.
How does the SMDJ36CAH compare to unidirectional SMDJ36AH in terms of application flexibility?
The SMDJ36CAH offers full bidirectional clamping, whereas the SMDJ36AH is unidirectional and requires correct polarity placement. In AC-coupled or differential signal paths - such as automotive LIN bus or industrial analog sensor outputs - the SMDJ36CAH eliminates orientation dependency and simplifies assembly. However, for DC power rails where reverse polarity is impossible, SMDJ36AH may offer marginally lower leakage (0.5 µA vs. 1 µA).
SMDJ36CAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- SMDJ
- 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):
- 51.6A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMDJ36CAH FAQ
1.How can I place an order for SMDJ36CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDJ36CAH 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 SMDJ36CAH reliable?
The price and inventory of SMDJ36CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDJ36CAH is usually 5 days.
3.What payment methods are accepted for SMDJ36CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDJ36CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDJ36CAH?
SMDJ36CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDJ36CAH 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 SMDJ36CAH?
For technical support, including SMDJ36CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDJ36CAH requirements.
6.How does Aetrix verify that SMDJ36CAH is sourced from the original manufacturer or authorized distributors?
All SMDJ36CAH 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 SMDJ36CAH meets industry standards.
7.What is the process for return or replacement of SMDJ36CAH?
All SMDJ36CAH units undergo pre-shipment inspection (PSI). If there is an issue with SMDJ36CAH, 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 SMDJ36CAH part is unused and in its original packaging.
Return procedure for SMDJ36CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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