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Taiwan Semiconductor Corporation SMCJ150CH
- Part No.:
- SMCJ150CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ150CH.pdf
- Description:
- 1500W, 185.5V, 10%, BIDIRECTIONA
- Quantity:
- Payment:
- Shipping:
Inventory:9,991
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Product details
Overview
SMCJ150CH from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 150V working stand-off voltage (VWM), 167–204V breakdown voltage (VBR), and 266V maximum clamping voltage (VC) at 5.8A peak pulse current. It provides AEC-Q101 qualification and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive load-dump and ESD protection.
For engineers reviewing the SMCJ150CH datasheet, SMCJ150CH pinout, SMCJ150CH application, or SMCJ150CH equivalent, this device is selected for high-energy transient suppression in automotive power rails, industrial DC bus lines, and telecom interface ports where fast response (<1.0 ps), low leakage (<1 µA @ 150V), and robust 150°C junction operation are required.
Technical Context
The SMCJ150CH is a glass-passivated, single-die, bidirectional TVS diode designed for unidirectional or bidirectional surge immunity without polarity dependency. Its clamping behavior follows the 10/1000 µs waveform per R.E.A., delivering 266V VC at 5.8A IPPM while maintaining <1 µA IR at VWM = 150V.
Thermally, it features RθJA = 55°C/W and RθJC = 10°C/W, enabling reliable operation up to TJ = +150°C. It complies with JESD201 Class 2 whisker resistance, J-STD-020 Level 1 moisture sensitivity, and RoHS/halogen-free requirements per IEC 61249-2-21.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 167 V / 204 V @ IT = 1 mA - Confirmed breakdown range ensuring predictable turn-on under transients |
| VC @ IPPM | 266 V @ 5.8 A - Clamping voltage limiting downstream circuit stress during ISO 7637-2 Pulse 5a events |
| PPK | 1500 W - Peak pulse power handling capability for 1 ms non-repetitive surges |
| IR @ VWM | <1 µA - Negligible leakage current preserving signal integrity and battery drain in always-on systems |
| TJ max | +150 °C - Enables under-hood automotive deployment without derating in ambient up to +105°C |
| Response time | <1.0 ps - Sub-nanosecond junction response ensures protection before sensitive ICs experience overvoltage |
Pinout & Package
DO-214AB (SMC) surface-mount package: molded epoxy case rated UL 94V-0, matte tin-plated leads, cathode band marking for unidirectional variants (not applicable to SMCJ150CH as bidirectional); polarity is symmetric-both terminals function identically.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge conduction path | Either terminal serves as input or return; no polarity constraint simplifies PCB layout in AC-coupled or floating rail applications |
| Case | Non-electrical mechanical body | DO-214AB outline defines 7.11 mm × 6.22 mm footprint with 2.3 mm height; thermal path optimized via copper pad exposure |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| ISO 7637-2 compliance | Passes Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling) waveforms |
| Glass passivated junction | Enhances long-term stability and reduces parameter drift under thermal/humidity stress vs. epoxy-passivated alternatives |
| Fast response <1.0 ps | Enables protection of sub-ns edge-rate digital interfaces (e.g., CAN FD, LIN, SENT) without signal distortion |
| Moisture sensitivity Level 1 | Zero bake requirement prior to reflow; supports standard SMT assembly without special handling |
Applications
| Automotive Power Distribution | Industrial DC Motor Drives |
|---|---|
Use Scenario: Protection of 12 V/24 V battery-fed ECUs against load dump (ISO 7637-2 Pulse 5a) and alternator switching spikes. IC Role / Device Role / Timing Role: Primary clamping device placed at main power entry point upstream of DC-DC converters and microcontrollers. Use Value: Limits transient voltage to ≤266 V, preventing latch-up or gate oxide rupture in downstream 36 V-rated regulators and 5 V logic supplies. | Use Scenario: Suppressing inductive kickback from brushed/BLDC motor commutation in factory automation controllers. IC Role / Device Role / Timing Role: Bidirectional shunt element across H-bridge supply rails to clamp both positive and negative flyback energy. Use Value: Absorbs 1500 W peak pulses without degradation, eliminating need for separate forward/reverse TVS pairs and reducing BOM count. |
| Telecom Line Interface | Renewable Energy Inverter DC Link |
Use Scenario: Shielding RS-485/RS-422 transceivers connected to outdoor cabling from lightning-induced surges and ESD. IC Role / Device Role / Timing Role: Secondary-level protection staged after gas discharge tube (GDT) primary arresters on differential data lines. Use Value: Provides low-clamping, fast-response backup with <1 µA leakage-preserving common-mode rejection and signal fidelity at 10 Mbps rates. | Use Scenario: Safeguarding IGBT gate drivers and sensing circuits on photovoltaic string inverters exposed to grid-switching transients. IC Role / Device Role / Timing Role: Parallel-connected TVS on DC link capacitor banks to clamp overvoltage during rapid IGBT turn-off. Use Value: Withstands repeated 1500 W pulses at 125°C ambient, extending system uptime in desert-mounted solar installations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA | 600 W PPK rating, SMB package (smaller footprint), higher VC = 243 V @ 4.2 A | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a load dump | Select when space-constrained layouts prioritize size over peak power handling |
| 1.5KE150CA | Through-hole DO-201 package, same 1500 W rating but slower response (~1 ns), higher IR = 5 µA | Not suitable for automated SMT lines; requires wave solder or hand assembly | Select only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMCJ150CH, SMBJ150CA offers smaller size but sacrifices 60% peak power margin and fails critical automotive load-dump compliance, while 1.5KE150CA retains full power rating but eliminates SMT manufacturability and increases leakage-making SMCJ150CH the optimal choice for production-grade automotive and industrial SMT systems.
Availability
SMCJ150CH is available at Aetrix Electronics and suitable for automotive ECU design, industrial motor control systems, telecom infrastructure equipment, and renewable energy inverters requiring stable component supply across multi-year production cycles.
Supply support for SMCJ150CH 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, MOSFETs, and automotive-qualified components.
The SMCJ series was developed specifically for high-reliability transient suppression in harsh environments-emphasizing AEC-Q101 compliance, ISO 7637-2 immunity, and robust thermal performance for under-hood and industrial deployments.
FAQ
What does the "CH" suffix indicate in SMCJ150CH?
The "CH" suffix denotes a bidirectional configuration with symmetrical clamping characteristics in both polarities. Unlike unidirectional SMCJ150H variants, SMCJ150CH has no cathode marking and functions identically regardless of voltage polarity-ideal for AC-coupled or floating-rail applications where polarity reversal may occur. This is confirmed in the datasheet's "Devices for bipolar applications" section.
Is SMCJ150CH compliant with AEC-Q101, and what tests does that include?
Yes, SMCJ150CH is AEC-Q101 qualified. This includes stress testing for high-temperature reverse bias (HTRB), temperature cycling (TC), highly accelerated stress test (HAST), and electrostatic discharge (ESD) per human-body model (HBM) ≥8 kV and machine model (MM) ≥400 V. These qualifications validate its suitability for automotive powertrain and chassis modules per the datasheet's FEATURES section.
What is the maximum clamping voltage of SMCJ150CH, and under what test condition is it specified?
The maximum clamping voltage of SMCJ150CH is 266 V, measured at 5.8 A peak pulse current (IPPM) using the 10/1000 µs double-exponential waveform defined in Fig.5 of the datasheet. This value represents worst-case voltage seen by downstream circuitry during standardized surge events such as ISO 7637-2 Pulse 5a, ensuring safe operation of 300 V-rated capacitors and 200 V MOSFETs.
Can SMCJ150CH be used in place of unidirectional SMCJ150H in existing designs?
SMCJ150CH can replace unidirectional SMCJ150H only if the circuit topology allows bidirectional clamping-i.e., no DC bias polarity constraints exist across the TVS location. Because SMCJ150CH lacks a cathode band and conducts equally in both directions, it must not be substituted in circuits relying on unidirectional blocking (e.g., DC power rail with polarity-sensitive downstream devices). Layout review is essential before substitution.
What is the thermal resistance profile of SMCJ150CH, and how does it impact PCB layout?
SMCJ150CH has RθJA = 55°C/W and RθJC = 10°C/W. To achieve rated 1500 W pulse dissipation, the PCB must provide adequate copper area (≥100 mm² per pad) and thermal vias beneath the SMC package. Insufficient copper will cause junction temperature to exceed 150°C during repetitive surges, triggering premature wear-out-verified in the THERMAL PERFORMANCE table of the datasheet.
SMCJ150CH 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):
- 150V
- Voltage - Breakdown (Min):
- 167V
- Voltage - Clamping (Max) @ Ipp:
- 266V
- Current - Peak Pulse (10/1000µs):
- 5.8A
- 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)
SMCJ150CH FAQ
1.How can I place an order for SMCJ150CH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ150CH 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 SMCJ150CH reliable?
The price and inventory of SMCJ150CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ150CH is usually 5 days.
3.What payment methods are accepted for SMCJ150CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ150CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ150CH?
SMCJ150CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ150CH 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 SMCJ150CH?
For technical support, including SMCJ150CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ150CH requirements.
6.How does Aetrix verify that SMCJ150CH is sourced from the original manufacturer or authorized distributors?
All SMCJ150CH 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 SMCJ150CH meets industry standards.
7.What is the process for return or replacement of SMCJ150CH?
All SMCJ150CH units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ150CH, 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 SMCJ150CH part is unused and in its original packaging.
Return procedure for SMCJ150CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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