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Vishay General Semiconductor - Diodes Division SMCJ150CA-E3/57T
- Part No.:
- SMCJ150CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ150CA-E3/57T.pdf
- Description:
- TVS DIODE 150VWM 243VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:12,956
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Product details
Overview
SMCJ150CA-E3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 150 V standoff voltage (VWM), 243 V maximum clamping voltage (VC) at 6.2 A peak pulse current (IPPM), and 1500 W peak pulse power (10/1000 µs waveform), commonly deployed in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the SMCJ150CA-E3/57T datasheet, SMCJ150CA-E3/57T pinout, SMCJ150CA-E3/57T application, or SMCJ150CA-E3/57T equivalent, key selection criteria include bidirectional clamping symmetry, low incremental surge resistance, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ150CA-E3/57T operates as a silicon avalanche diode with symmetrical breakdown in both directions, enabling protection of AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1.0 ns), critical for suppressing ESD and lightning-induced transients per IEC 61000-4-2/4-5.
Thermally, it uses a low-profile SMC package with RθJL = 15 °C/W to lead, supporting reliable energy dissipation under repetitive surge conditions when mounted per recommended pad layout. The device meets MSL Level 1 (260 °C reflow) and is RoHS-compliant with matte tin-plated leads solderable per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 12 V–48 V systems. |
| VBR min/max | 167 V / 185 V at IT = 1 mA - Confirmed bidirectional breakdown range; ensures consistent clamping onset across temperature and unit variation. |
| VC @ IPPM | 243 V at 6.2 A (10/1000 µs) - Measured clamping voltage limits downstream IC stress during surge events. |
| PPPM | 1500 W - Peak pulse power rating determines survivability against high-energy transients like ISO 7637-2 Pulse 5a. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance dictates derating above 25 °C ambient; requires minimum 8 mm × 8 mm copper pads. |
| TJ max | +150 °C - Maximum junction temperature enables operation in under-hood automotive environments. |
| Leakage ID | ≤1.0 µA at VWM - Low reverse leakage preserves system efficiency and avoids false triggering in high-impedance circuits. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H); cathode band absent per bidirectional design.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (positive half-cycle) | Accepts surge current during positive voltage excursions; symmetric with cathode for bidirectional conduction. |
| Cathode | Transient current entry (negative half-cycle) | Accepts surge current during negative voltage excursions; electrically identical to anode in CA devices. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both polarities-enables single-device protection of AC signals or ungrounded buses without external polarity management. |
| AEC-Q101 qualified option | Available as HE3/HM3 variants-validates reliability for automotive powertrain and body electronics per stress-test requirements. |
| Low-profile SMC package | Height ≤2.62 mm-supports compact PCB layouts in space-constrained modules such as ADAS camera ECUs and motor control inverters. |
| MSL Level 1 rating | Reflow capable up to 260 °C peak-ensures compatibility with standard lead-free SMT assembly processes without moisture sensitivity concerns. |
| Glass passivated junction | Stable leakage <1 µA and repeatable breakdown-reduces parameter drift over lifetime and improves long-term surge immunity consistency. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Primary clamping element placed upstream of DC-DC converters and microcontrollers. Use Value: Limits transient voltage to ≤243 V while absorbing 1500 W pulses, preventing latch-up or gate oxide damage in downstream MOSFETs and PMICs. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) in factory automation PLC I/O modules from EFT and surge coupling. IC Role / Device Role / Timing Role: Bidirectional shunt protector on differential or single-ended signal traces between sensors and ADC front-ends. Use Value: Clamps ±243 V surges within <1 ns, preserving signal integrity and avoiding ADC saturation or input-stage damage. |
| Telecom DC Power Feeds | Consumer Device USB Port Protection |
Use Scenario: Safeguarding PoE-powered equipment (e.g., IP cameras, access points) against induced surges on 48 V DC distribution lines. IC Role / Device Role / Timing Role: Secondary-level TVS on midspan or endpoint DC input, coordinated with primary GDT/MOV stages. Use Value: Provides precise 150 V standoff and low clamping to protect IEEE 802.3af/at compliant PHYs and DC-DC controllers without overvoltage derating. | Use Scenario: Hardening USB 2.0 data lines and VBUS against ESD (IEC 61000-4-2 ±15 kV contact) in portable speakers and docking stations. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp on D+/D− and VBUS, placed adjacent to connector. Use Value: Delivers sub-1 ns response and <1 µA leakage-maintaining signal rise time and bus quiescent current while meeting USB-IF ESD compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC150CA | Same VWM (150 V) and VC (243 V), but lower PPPM = 1000 W; SOD-123FL package (smaller footprint, higher RθJA). | Preferred for space-limited consumer ports where 1000 W surge margin suffices; not suitable for automotive load dump. | Select SAC150CA only when board area is constrained and peak surge energy is ≤1000 W. |
| SMCJ150A-E3/57T | Unidirectional variant with identical VWM, VC, and PPPM; includes cathode band marking and forward voltage drop (VF = 3.5 V @ 100 A). | Required for DC-biased rails where reverse polarity must be blocked; unsuitable for AC or floating signals. | Choose SMCJ150A-E3/57T only when circuit topology mandates unidirectional blocking (e.g., +12 V rail with ground reference). |
Compared with SAC150CA and SMCJ150A-E3/57T, the SMCJ150CA-E3/57T uniquely balances 1500 W surge capacity, bidirectional symmetry, and SMC thermal performance-making it the optimal choice for automotive and industrial DC bus protection where polarity independence and high-energy handling are mandatory.
Availability
SMCJ150CA-E3/57T is available at Aetrix Electronics and suitable for automotive power input protection, industrial sensor signal line hardening, telecom DC feed safeguarding, and consumer USB port ESD mitigation requiring stable component supply and full traceability.
Supply support for SMCJ150CA-E3/57T 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability and automotive-grade qualification.
The SMCJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure applications demanding AEC-Q101 compliance and robust surge immunity.
FAQ
What is the clamping voltage of the SMCJ150CA-E3/57T under a 10/1000 µs surge?
The SMCJ150CA-E3/57T has a maximum clamping voltage (VC) of 243 V when subjected to its rated peak pulse current of 6.2 A using the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's datasheet revision 09-Jan-2024, Document Number 88394. The SMCJ150CA-E3/57T maintains this clamping performance bidirectionally, ensuring consistent protection regardless of transient polarity.
Is the SMCJ150CA-E3/57T AEC-Q101 qualified?
The SMCJ150CA-E3/57T itself is the commercial-grade RoHS-compliant variant (E3 suffix). However, Vishay offers AEC-Q101 qualified versions under the HE3 and HM3 suffixes (e.g., SMCJ150CAHE3_A/H). The SMCJ150CA-E3/57T shares identical electrical characteristics and package with those qualified parts but lacks formal automotive qualification documentation. For automotive applications requiring certified reliability, specify the HE3 or HM3 variant instead of the SMCJ150CA-E3/57T.
What is the thermal resistance of the SMCJ150CA-E3/57T, and how does it affect layout?
The SMCJ150CA-E3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the minimum recommended 8.0 mm × 8.0 mm copper pads per terminal. This value assumes no additional heatsinking. To maintain safe junction temperatures under repeated surges, PCB layout must allocate sufficient copper area-reducing pad size increases RθJA and risks thermal runaway. The SMCJ150CA-E3/57T relies on this defined layout for its published 1500 W rating.
How does the SMCJ150CA-E3/57T differ from the unidirectional SMCJ150A-E3/57T?
The SMCJ150CA-E3/57T is bidirectional with symmetrical breakdown and clamping in both polarities and no polarity marking, whereas the SMCJ150A-E3/57T is unidirectional, features a cathode band, and exhibits forward conduction (VF = 3.5 V @ 100 A). Both share identical VWM (150 V), VC (243 V), and PPPM (1500 W), but the SMCJ150CA-E3/57T is required for AC-coupled, floating, or polarity-agnostic protection schemes where reverse blocking is unnecessary.
What is the maximum leakage current of the SMCJ150CA-E3/57T at its standoff voltage?
The SMCJ150CA-E3/57T exhibits a maximum reverse leakage current (ID) of 1.0 µA at its rated standoff voltage (VWM) of 150 V, measured at TA = 25 °C. This low leakage ensures minimal power loss in always-on systems and avoids false triggering in high-impedance monitoring circuits. The SMCJ150CA-E3/57T maintains this specification across its full operating temperature range (−55 °C to +150 °C), with leakage increasing predictably per datasheet derating curves.
SMCJ150CA-E3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- 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:
- 243V
- Current - Peak Pulse (10/1000µs):
- 6.2A
- 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 (SMCJ)
SMCJ150CA-E3/57T FAQ
1.How can I place an order for SMCJ150CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ150CA-E3/57T 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 SMCJ150CA-E3/57T reliable?
The price and inventory of SMCJ150CA-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ150CA-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ150CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ150CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ150CA-E3/57T?
SMCJ150CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ150CA-E3/57T 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 SMCJ150CA-E3/57T?
For technical support, including SMCJ150CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ150CA-E3/57T requirements.
6.How does Aetrix verify that SMCJ150CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ150CA-E3/57T 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 SMCJ150CA-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ150CA-E3/57T?
All SMCJ150CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ150CA-E3/57T, 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 SMCJ150CA-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ150CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ150CA-E3/57T Tags
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