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Taiwan Semiconductor Corporation SMCJ150H
- Part No.:
- SMCJ150H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ150H.pdf
- Description:
- 1500W, 185.5V, 10%, UNIDIRECTION
- Quantity:
- Payment:
- Shipping:
Inventory:6,663
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Product details
Overview
SMCJ150H from Taiwan Semiconductor is a unidirectional 1500W surface-mount 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 - designed for automotive-grade ESD and load-switching surge protection in power supply rails and interface lines.
For engineers reviewing the SMCJ150H datasheet, SMCJ150H pinout, SMCJ150H application, or SMCJ150H equivalent, this device is evaluated for ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, AEC-Q101 qualification, and fast sub-1ps response time - critical for protecting CAN, LIN, and 12V/24V automotive subsystems against repetitive transients.
Technical Context
The SMCJ150H employs a glass-passivated silicon junction optimized for high-energy transient suppression in unidirectional configuration. Its 1500W peak pulse power rating (tp = 1ms) and 10°C/W junction-to-case thermal resistance enable robust operation under repeated surges without thermal runaway.
With a maximum reverse leakage of 1µA at 150V and forward voltage of 5.0V at 100A, the device maintains low standby power loss while delivering precise clamping performance - validated per ANSI/IEEE C62.35 standards and rated for -55°C to +150°C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous DC or RMS voltage the device blocks without conduction |
| VBR min/max | 167 V / 204 V @ 1 mA - Confirmed breakdown threshold range ensuring reliable turn-on during overvoltage events |
| VC @ IPPM | 266 V @ 5.8 A - Clamped voltage seen by protected circuit during 10/1000µs surge, limiting stress on downstream ICs |
| PPK | 1500 W - Peak pulse power handling capability per single 1ms transient, derated above 25°C ambient |
| TJ max | +150 °C - Maximum junction temperature enabling use in under-hood automotive environments |
| IR @ VWM | <1 µA - Negligible leakage current preserving signal integrity and battery life in always-on systems |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, polarity indicated by cathode band. Weight: 0.210 g. UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to ground or low-side reference in unidirectional TVS configuration |
| Cathode | Current exit point in forward bias; high-impedance terminal in reverse bias until clamping | Connected to protected line (e.g., CAN_H, power rail); clamps to anode when transient exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and infotainment power rails |
| ISO 7637-2 compliant (Pulse 1/2a/2b/3a/3b) | Meets OEM-level surge immunity requirements for 12V/24V vehicle electrical systems |
| Fast response time <1.0 ps | Clamps before transient energy couples into sensitive analog or digital circuitry |
| Glass passivated junction | Ensures stable VBR and low IR over lifetime, even under humidity and thermal cycling stress |
| Moisture sensitivity level 1 (J-STD-020) | Zero bake requirement prior to reflow, supporting standard SMT assembly processes |
Applications
| Automotive Power Rail Protection | CAN Bus Line Protection |
|---|---|
Use Scenario: Protecting 12V/24V battery-fed ECUs from load-dump and alternator-induced transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 150V. Use Value: Limits peak voltage to 266V during 1500W transients, preventing damage to MCU power supplies and PMICs. | Use Scenario: Shielding CAN_H/CAN_L differential pair from ESD and coupled noise in vehicle networks. IC Role / Device Role / Timing Role: Single SMCJ150H used on CAN_H line with common-mode choke; cathode tied to line, anode to ground. Use Value: Sub-1ps response ensures clamping occurs before CAN transceiver input stages are overstressed during ±8kV contact ESD. |
| Industrial Motor Drive I/O Protection | Telecom DC Power Input Protection |
Use Scenario: Safeguarding PLC digital I/O modules connected to inductive solenoid loads. IC Role / Device Role / Timing Role: Mounted across relay coil or output transistor collector-emitter path to absorb flyback energy. Use Value: 1500W rating handles repetitive 8.3ms half-sine surges up to 200A IFSM without degradation. | Use Scenario: Front-end protection for 48V telecom rectifier outputs feeding base station equipment. IC Role / Device Role / Timing Role: Placed between rectifier output and bulk capacitor to suppress lightning-induced surges per IEC 61000-4-5. Use Value: 266V clamping voltage ensures downstream DC-DC converters operate within safe input limits during 10/1000µs transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150A | 600W rating, SMB package (smaller footprint, lower thermal mass) | Lower energy handling; suitable only for non-repetitive or low-duty-cycle surges | Select when board space is constrained and peak surge energy ≤600W |
| 1.5KE150A | Through-hole DO-201 package, same 150V VWM but higher VC (243V) and lower PPK (1500W same, but slower thermal recovery) | Not AEC-Q101 qualified; unsuitable for automotive production | Select for cost-sensitive industrial prototypes where reflow compatibility is not required |
Compared with SMBJ150A and 1.5KE150A, the SMCJ150H delivers superior automotive-grade reliability via AEC-Q101 qualification, ISO 7637-2 compliance, and DO-214AB thermal performance - making it the preferred choice for production automotive and high-reliability industrial designs requiring 1500W surge margin.
Availability
SMCJ150H is available at Aetrix Electronics and suitable for automotive ECU protection, CAN bus hardening, and industrial motor drive I/O requiring stable component supply across multi-year production cycles.
Supply support for SMCJ150H 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 automotive and industrial certifications.
The SMCJ series was developed specifically for AEC-Q101-compliant, high-power surface-mount transient suppression - targeting 12V/24V automotive subsystems, industrial automation interfaces, and telecom infrastructure where reliability under harsh electrical stress is mandatory.
FAQ
What is the clamping voltage of the SMCJ150H under a standard 10/1000µs surge?
The SMCJ150H has a maximum clamping voltage (VC) of 266 V when subjected to its rated peak pulse current of 5.8 A, defined per the 10/1000µs waveform in Figure 5 of the datasheet. This value is measured at TJ = 25°C and ensures downstream components see no more than 266 V during transient events - a critical parameter for safeguarding 3.3V or 5V logic interfaces powered from protected rails. The SMCJ150H maintains this clamping performance across its full operating temperature range.
Is the SMCJ150H suitable for bidirectional transient protection?
No, the SMCJ150H is a unidirectional TVS diode intended for DC-biased lines such as positive power rails or single-ended signal paths. For bidirectional protection (e.g., AC lines or differential buses like RS-485), Taiwan Semiconductor specifies the SMCJ150AH variant - which uses a symmetrical bipolar structure. Using the SMCJ150H in bidirectional applications risks forward conduction during negative excursions, compromising protection integrity. Always verify polarity marking and select SMCJ150AH for true bidirectional use.
Does the SMCJ150H meet automotive qualification standards?
Yes, the SMCJ150H is explicitly AEC-Q101 qualified and tested per ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b waveforms - confirming suitability for automotive power network protection. It also complies with JESD201 Class 2 whisker resistance, J-STD-020 moisture sensitivity level 1, and RoHS/halogen-free requirements per IEC 61249-2-21. These qualifications are documented in the official Taiwan Semiconductor datasheet revision A2102 and verified through certified third-party test reports.
What is the forward voltage drop of the SMCJ150H at high surge current?
The SMCJ150H exhibits a forward voltage (VF) of 5.0 V at 100 A, as specified in Note 2 of the Absolute Maximum Ratings table. This value applies to all SMCJ100H–SMCJ170H unidirectional devices and reflects the diode's on-state behavior during extreme forward surges - important for estimating power dissipation in fault conditions and verifying compatibility with low-voltage crowbar circuits. The VF remains stable across temperature due to the glass-passivated junction construction.
How does the thermal performance of the SMCJ150H compare to smaller-package alternatives?
The SMCJ150H in DO-214AB (SMC) package achieves a junction-to-case thermal resistance (RθJC) of 10°C/W - significantly lower than SMBJ-series (≈15°C/W) or SOD-123-packaged TVS diodes. This enables sustained 1500W pulse handling with minimal thermal derating, especially when mounted on copper pours. Its 55°C/W junction-to-ambient rating assumes standard JEDEC 2S2P layout; actual board-level cooling can improve this by >30% with 1-in² 2-oz copper pad, directly enhancing reliability in high-duty-cycle applications.
SMCJ150H 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):
- 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)
SMCJ150H FAQ
1.How can I place an order for SMCJ150H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ150H 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 SMCJ150H reliable?
The price and inventory of SMCJ150H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ150H is usually 5 days.
3.What payment methods are accepted for SMCJ150H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ150H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ150H?
SMCJ150H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ150H 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 SMCJ150H?
For technical support, including SMCJ150H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ150H requirements.
6.How does Aetrix verify that SMCJ150H is sourced from the original manufacturer or authorized distributors?
All SMCJ150H 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 SMCJ150H meets industry standards.
7.What is the process for return or replacement of SMCJ150H?
All SMCJ150H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ150H, 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 SMCJ150H part is unused and in its original packaging.
Return procedure for SMCJ150H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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