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Vishay General Semiconductor - Diodes Division 1.5SMC150CA-E3/57T
- Part No.:
- 1.5SMC150CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC150CA-E3/57T.pdf
- Description:
- TVS DIODE 128VWM 207VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:1,700
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Product details
Overview
1.5SMC150CA-E3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It delivers 1500 W peak pulse power (10/1000 μs), clamps at 207 V max under 7.2 A peak pulse current, and features a 128 V standoff voltage (VWM) with ±5% tolerance - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the 1.5SMC150CA-E3/57T datasheet, 1.5SMC150CA-E3/57T pinout, 1.5SMC150CA-E3/57T application, or 1.5SMC150CA-E3/57T equivalent, key selection criteria include bidirectional clamping capability, DO-214AB package thermal performance, AEC-Q101 qualification status, and compliance with UL 497B surge protector requirements.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection against polarity-agnostic transients such as ESD, lightning-induced surges, and inductive switching spikes. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1 μA at 128 V).
The device uses a low-inductance SMC (DO-214AB) package with matte tin-plated leads, rated for MSL Level 1 reflow (260 °C peak), and achieves thermal resistance of 75 °C/W (junction-to-ambient) on standard 8 mm × 8 mm copper pads - critical for sustained surge handling in compact layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 128 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe working margin below breakdown. |
| VBR (Breakdown) | 143–158 V at 1 mA - Confirmed breakdown voltage range ensuring predictable turn-on during overvoltage events. |
| VC (Clamping) | 207 V max at IPPM = 7.2 A - Peak voltage seen by protected circuit during 10/1000 μs surge; determines stress on downstream components. |
| PPPM | 1500 W - Peak pulse power handling per 10/1000 μs waveform; enables suppression of high-energy transients without failure. |
| ID (Leakage) | <1 μA at VWM - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in sensitive analog paths. |
| TJ max | +150 °C - Maximum junction temperature rating supporting operation in under-hood automotive and industrial environments. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated placement. |
Pinout & Package
Package: SMC (DO-214AB), molded epoxy case meeting UL 94 V-0 flammability rating; terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (positive half-cycle) | One terminal of symmetrical PN junction; conducts during positive-going surges relative to cathode reference. |
| Cathode | Transient current entry (negative half-cycle) | Second terminal of symmetrical PN junction; conducts during negative-going surges - functionally identical to anode in bidirectional mode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection against AC-coupled or polarity-unknown transients without external diode pairing. |
| 1500 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity in properly designed PCB layouts with adequate copper pour. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD), improving protection margin for CMOS ICs. |
| AEC-Q101 qualified option | RoHS-compliant 1.5SMC150CAHE3/57T variant available for automotive applications requiring validated reliability testing. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile use (peak 260 °C), eliminating bake requirements prior to assembly. |
Applications
| Automotive Sensor Interface | Industrial PLC I/O Module |
|---|---|
Use Scenario: Protecting CAN/FlexRay signal lines and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional transient suppressor placed directly at connector entry point before signal conditioning circuitry. Use Value: Clamps 128 V standoff transients to ≤207 V within nanoseconds, preventing latch-up or gate oxide damage in 3.3 V/5 V microcontrollers and ADC front-ends. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on isolated input stage, coordinated with optocoupler and series impedance. Use Value: Absorbs 1500 W surge energy without degradation, maintaining >10⁶ surge cycles per MIL-STD-883H Method 3015.8. |
| Telecom Line Card Protection | Consumer Power Adapter Input Stage |
Use Scenario: Secondary-level surge protection on POTS or xDSL line interface circuits subjected to lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Fast-response shunt element after primary gas discharge tube (GDT), providing precise voltage limiting. Use Value: Low 207 V clamping voltage ensures downstream transformer and codec ICs remain within absolute maximum ratings during 10/1000 μs surges. |
Use Scenario: Input-stage transient suppression in universal-input AC/DC adapters for smart home devices, guarding against mains-borne surges. IC Role / Device Role / Timing Role: First-line defense across bridge rectifier output, complementing X/Y-capacitor filtering and MOV staging. Use Value: 128 V VWM aligns with 115/230 VAC full-wave rectified peaks (~162/325 VDC), allowing reliable conduction only during abnormal overvoltage. |
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 | Lower PPPM (600 W), same VWM/VBR range, SMB (DO-214AA) package - 30% smaller footprint but higher thermal resistance (110 °C/W). | Preferred where board space is constrained and surge energy is limited to IEC 61000-4-5 Level 2 (2 kV); unsuitable for repeated 4 kV events. | Select when layout density outweighs peak power requirement and thermal derating can be managed via enhanced copper pour. |
| 1.5KE150CA | Through-hole TO-204AE (DO-15) package, identical electrical specs, higher RθJA (100 °C/W), no MSL rating. | Used in legacy designs or prototyping where manual assembly or socketing is acceptable; not suitable for high-volume SMT production. | Choose only for repair, replacement, or low-volume non-automated builds - incompatible with modern pick-and-place processes. |
Compared with SMBJ150CA and 1.5KE150CA, the 1.5SMC150CA-E3/57T provides optimal balance of 1500 W surge capacity, SMT manufacturability, and thermal performance in a standardized DO-214AB outline - making it the preferred choice for new automotive and industrial designs requiring AEC-Q101 alignment and high-reliability surge immunity.
Availability
1.5SMC150CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor systems, industrial control I/O modules, telecom line cards, and consumer power adapter designs requiring stable component supply and long-term lifecycle support.
Supply support for 1.5SMC150CA-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, precision, and application-specific optimization.
The 1.5SMC Series targets high-energy transient suppression in harsh environments, engineered for automotive, industrial, and telecom applications where robustness, AEC-Q101 qualification, and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC150CA-E3/57T under maximum rated surge current?
The 1.5SMC150CA-E3/57T exhibits a maximum clamping voltage (VC) of 207 V when subjected to its rated peak pulse current (IPPM) of 7.2 A using the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88303 and defines the upper voltage limit imposed on protected circuitry during worst-case surge conditions. The 1.5SMC150CA-E3/57T maintains this clamping performance across its specified operating temperature range (-65 °C to +150 °C), with minimal drift due to its low temperature coefficient of VBR (0.108 %/°C).
Is the 1.5SMC150CA-E3/57T RoHS-compliant and halogen-free?
Yes, the 1.5SMC150CA-E3/57T carries the "E3" suffix, indicating full RoHS compliance per EU Directive 2011/65/EU and exemption 7a, with lead content <1000 ppm. It is not halogen-free; for halogen-free and RoHS-compliant variants, specify the "M3" suffix (e.g., 1.5SMC150CA-M3/57T). Both E3 and M3 versions meet JESD 201 Class 2 whisker resistance and UL 94 V-0 flammability standards. The 1.5SMC150CA-E3/57T is manufactured using matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability requirements.
Does the 1.5SMC150CA-E3/57T have AEC-Q101 qualification?
The base 1.5SMC150CA-E3/57T is commercial-grade and not AEC-Q101 qualified. However, Vishay offers the automotive-qualified variant 1.5SMC150CAHE3/57T (with "HE3" suffix), which undergoes full AEC-Q101 stress testing including HTGB, HTRB, TCT, and mechanical shock. The 1.5SMC150CA-E3/57T shares identical electrical characteristics and package dimensions with its HE3 counterpart, enabling drop-in qualification upgrades. For production automotive programs, the 1.5SMC150CAHE3/57T must be specified explicitly - the 1.5SMC150CA-E3/57T itself does not carry AEC-Q101 certification.
What is the thermal resistance of the 1.5SMC150CA-E3/57T, and how does it affect surge handling?
The 1.5SMC150CA-E3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per Vishay's recommended layout. This value directly impacts sustained surge capability: at 25 °C ambient, the device can dissipate up to 6.5 W continuously, but during short-duration 10/1000 μs pulses, thermal mass dominates - allowing 1500 W peak power. Derating curves (Figure 2 in doc 88303) show that at 100 °C ambient, IPPM drops to ~5.3 A (vs. 7.2 A at 25 °C). Proper copper pour design is essential to maintain the 1.5SMC150CA-E3/57T within safe thermal limits during repetitive surge events.
How does the bidirectional nature of the 1.5SMC150CA-E3/57T impact its use in DC circuits?
The 1.5SMC150CA-E3/57T functions identically in both polarities, making it ideal for protecting AC-coupled or floating DC nodes - such as differential data lines (RS-485, CAN) or ungrounded sensor outputs. In single-ended DC circuits (e.g., 24 V supply rail), it still provides effective protection: during positive transients, one junction conducts; during negative transients (e.g., ground bounce), the other conducts. Its 128 V VWM ensures no conduction during normal operation, while symmetrical 143–158 V VBR guarantees consistent response regardless of surge polarity. No external biasing or orientation constraints apply - the 1.5SMC150CA-E3/57T is inherently polarity-agnostic.
1.5SMC150CA-E3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 207V
- Current - Peak Pulse (10/1000µs):
- 7.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC150CA-E3/57T FAQ
1.How can I place an order for 1.5SMC150CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC150CA-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 1.5SMC150CA-E3/57T reliable?
The price and inventory of 1.5SMC150CA-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 1.5SMC150CA-E3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC150CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC150CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC150CA-E3/57T?
1.5SMC150CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC150CA-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 1.5SMC150CA-E3/57T?
For technical support, including 1.5SMC150CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC150CA-E3/57T requirements.
6.How does Aetrix verify that 1.5SMC150CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC150CA-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 1.5SMC150CA-E3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC150CA-E3/57T?
All 1.5SMC150CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC150CA-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 1.5SMC150CA-E3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC150CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC150CA-E3/57T Tags
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