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Vishay General Semiconductor - Diodes Division 1.5SMC150A-E3/57T
- Part No.:
- 1.5SMC150A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC150A-E3/57T.pdf
- Description:
- TVS DIODE 128VWM 207VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,081
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Product details
Overview
1.5SMC150A-E3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 128 V standoff voltage (VWM), and clamping at 207 V (VC) under 7.2 A peak pulse current. It protects MOSFETs and sensor signal lines in automotive power electronics against lightning-induced transients and inductive switching surges.
For engineers reviewing the 1.5SMC150A-E3/57T datasheet, 1.5SMC150A-E3/57T pinout, 1.5SMC150A-E3/57T application, or 1.5SMC150A-E3/57T equivalent, this page delivers verified electrical parameters, thermal derating behavior, polarity marking guidance, RoHS-compliant commercial-grade qualification, and direct alternative part comparisons for ESD and surge protection design-in.
Technical Context
This TVS operates as a unidirectional clamping device with cathode-band polarity identification, leveraging glass-passivated junction technology for stable breakdown and low incremental surge resistance. Its 1500 W peak pulse rating is defined per 10/1000 μs waveform at 0.01% duty cycle, with thermal derating above 25 °C per Fig. 2.
The device exhibits a 0.108 %/°C temperature coefficient of VBR, 75 °C/W junction-to-ambient thermal resistance (RθJA), and meets J-STD-020 MSL Level 1 (260 °C peak reflow). It is RoHS-compliant (E3 suffix), matte tin-plated, and qualified to JESD 201 Class 2 whisker standard.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 128 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin below breakdown. |
| VBR @ IT = 1 mA | 143–158 V - Verified breakdown voltage range at 1 mA test current; ensures predictable turn-on threshold under transient stress. |
| VC @ IPPM = 7.2 A | 207 V - Clamped voltage during full-rated 10/1000 μs surge; determines maximum stress imposed on protected downstream circuitry. |
| PPPM | 1500 W - Peak pulse power handling capability; enables robust protection against high-energy transients like ISO 7637-2 Pulse 5a. |
| IFSM | 200 A - Non-repetitive forward surge current rating (8.3 ms half-sine); supports unidirectional placement in DC power rail protection. |
| TJ max | +150 °C - Maximum junction temperature; sets thermal design limits for PCB copper pad layout and ambient operating envelope. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on standard 0.31" × 0.31" copper pads; guides heatsinking requirements for sustained surge duty. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile plastic case with matte tin-plated leads. Cathode identified by black band; anode is unmarked end. Meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VLINE exceeds VWM. |
| Anode (unmarked end) | Reference node | Typically tied to system ground or lower-potential rail; completes clamping path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables single-device protection against high-energy automotive load-dump and lightning surges without cascading devices. |
| Glass passivated chip junction | Ensures long-term stability of VBR and leakage performance across temperature and humidity stress conditions. |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT assembly without pre-baking or special handling protocols. |
| RoHS-compliant E3 suffix | Meets global environmental compliance requirements for commercial industrial and automotive applications. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD > 1 kV/ns), improving IC survivability. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from ISO 7637-2 Pulse 5a (load dump) and Pulse 1 (inductive switch-off). IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp transients before they reach MCU power pins. Use Value: Limits rail voltage to ≤207 V during 1500 W surges, preventing damage to 3.3 V/5 V logic supplies and CAN transceivers. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA, 0–10 V) of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted at connector interface to suppress EFT bursts and cable-coupled surges. Use Value: Maintains signal integrity with <1 μA leakage at 128 V, while clamping fast transients within nanoseconds to prevent ADC saturation. |
| Consumer Power Adapter Input Stage | Telecom DC Feeder Protection |
Use Scenario: Safeguarding AC-DC adapter primary-side rectifier and secondary-side 5 V/12 V outputs against surge coupling via mains or USB ports. IC Role / Device Role / Timing Role: Unidirectional TVS on secondary-side DC bus to absorb energy from hot-plug events and nearby lightning-induced coupling. Use Value: Withstands repetitive 7.2 A pulses at 0.01% duty cycle, enabling reliable operation in multi-port wall adapters without thermal runaway. |
Use Scenario: Protecting -48 V DC feeder lines in telecom base station cabinets from induced surges during lightning storms. IC Role / Device Role / Timing Role: High-power TVS installed at cabinet entry point to shunt surge current before it reaches PoE controllers and backplane regulators. Use Value: Delivers 207 V clamping at full 1500 W rating, ensuring downstream -48 V converters remain within absolute maximum ratings during 10/1000 μs threats. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150A-E3/52 | Lower peak power (600 W), same VWM/VC, SMB (DO-214AA) package (smaller footprint, higher RθJA ≈ 90 °C/W). | Suitable for space-constrained consumer designs with lower surge exposure; not recommended for automotive load-dump. | Select when board area is critical and surge energy is limited to ≤600 W (e.g., USB-C PD port protection). |
| 1.5KE150A | Through-hole TO-204AE (DO-41) package, identical VWM/VC/PPPM, but higher mounting thermal resistance and no MSL Level 1 rating. | Used in legacy industrial power supplies where manual assembly or wave soldering is required; incompatible with automated SMT lines. | Choose only for through-hole redesigns or repair scenarios where SMT infrastructure is unavailable. |
Compared with 1.5SMC150A-E3/57T, SMBJ150A-E3/52 trades surge robustness for compactness, while 1.5KE150A retains full power rating but sacrifices SMT compatibility and reflow readiness-making 1.5SMC150A-E3/57T the optimal choice for new automotive and industrial SMT designs requiring AEC-Q101-aligned reliability and 1500 W capability.
Availability
1.5SMC150A-E3/57T is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, telecom DC feeder safeguarding, and consumer power adapter surge resilience requiring stable component supply across production lifecycles.
Supply support for 1.5SMC150A-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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series was engineered for high-energy transient suppression in harsh environments-designed to meet automotive, industrial, and telecom surge immunity standards while supporting automated SMT manufacturing and long-term field reliability.
FAQ
What is the standoff voltage (VWM) of the 1.5SMC150A-E3/57T?
The 1.5SMC150A-E3/57T has a maximum reverse standoff voltage (VWM) of 128 V. This value represents the highest continuous DC or RMS voltage the device can block without entering avalanche conduction, ensuring safe operation under normal conditions while leaving sufficient margin below its 143–158 V breakdown range. It is measured at 25 °C with ≤1 μA leakage current.
How does the 1.5SMC150A-E3/57T differ from bidirectional variants like 1.5SMC150CA?
The 1.5SMC150A-E3/57T is unidirectional, featuring a cathode band for polarity-sensitive placement in DC circuits, whereas 1.5SMC150CA is bidirectional with no polarity marking and symmetric clamping in both directions. The 1.5SMC150A-E3/57T supports forward surge current (IFSM = 200 A), which the CA version does not specify-making the A variant suitable for DC power rail protection where forward conduction may occur.
Is the 1.5SMC150A-E3/57T AEC-Q101 qualified?
No-the 1.5SMC150A-E3/57T carries the E3 suffix, indicating RoHS-compliant commercial-grade qualification only. For AEC-Q101 qualification, the correct part is 1.5SMC150AHE3_A, which adds the HE3 suffix and revision code (e.g., _A). The 1.5SMC150A-E3/57T is not tested or certified to AEC-Q101 stress requirements, though it shares the same die and package construction.
What is the clamping voltage (VC) of the 1.5SMC150A-E3/57T under full-rated surge current?
At its rated peak pulse current of 7.2 A (10/1000 μs waveform), the 1.5SMC150A-E3/57T clamps to a maximum of 207 V. This VC value is guaranteed across temperature and production lot variations, and defines the upper voltage limit imposed on protected circuitry during worst-case transient events-critical for validating downstream component voltage tolerances.
Can the 1.5SMC150A-E3/57T be used in place of the older 1.5KE150A?
Yes, the 1.5SMC150A-E3/57T provides equivalent electrical performance (VWM, VBR, VC, PPPM) to the through-hole 1.5KE150A but in an SMC (DO-214AB) surface-mount package. Key differences include MSL Level 1 reflow compatibility, lower profile, and automated placement suitability-however, PCB layout must be updated to accommodate the SMC footprint and thermal pad requirements.
1.5SMC150A-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:
- 1
- Bidirectional Channels:
- -
- 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)
1.5SMC150A-E3/57T FAQ
1.How can I place an order for 1.5SMC150A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC150A-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 1.5SMC150A-E3/57T reliable?
The price and inventory of 1.5SMC150A-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 1.5SMC150A-E3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC150A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC150A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC150A-E3/57T?
1.5SMC150A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC150A-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 1.5SMC150A-E3/57T?
For technical support, including 1.5SMC150A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC150A-E3/57T requirements.
6.How does Aetrix verify that 1.5SMC150A-E3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC150A-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 1.5SMC150A-E3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC150A-E3/57T?
All 1.5SMC150A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC150A-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 1.5SMC150A-E3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC150A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC150A-E3/57T Tags
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