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Vishay General Semiconductor - Diodes Division SM15T150A-M3/57T
- Part No.:
- SM15T150A-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T150A-M3/57T.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,288
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Product details
Overview
SM15T150A-M3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 128 V standoff voltage (VWM), 143–158 V breakdown voltage (VBR), and clamps to 207 V at 7.2 A peak pulse current. It protects MOSFETs and signal lines in automotive power electronics against lightning-induced and inductive-switching transients.
For engineers reviewing the SM15T150A-M3/57T datasheet, SM15T150A-M3/57T pinout, SM15T150A-M3/57T application, or SM15T150A-M3/57T equivalent, key selection criteria include verified clamping voltage under 10/1000 μs stress, unidirectional polarity with cathode band marking, halogen-free RoHS compliance (M3 suffix), and thermal resistance of 75 °C/W junction-to-ambient on standard 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamping protection device triggered by reverse-biased avalanche breakdown. Its glass-passivated junction ensures stable leakage (<1.0 μA at 128 V) and low inductance for fast transient response. The device is designed for single-pulse threat suppression-not repetitive surge handling-and fails short-circuit under overstress.
Thermal performance is defined per JEDEC J-STD-020 MSL Level 1 (260 °C peak reflow), with junction temperature limited to +150 °C. Power derating above 25 °C ambient follows a linear curve, and maximum forward surge current (IFSM) is 200 A for 10 ms half-sine wave-applicable only in unidirectional configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 128 V - Maximum continuous reverse operating voltage before significant leakage begins; sets upper limit for normal circuit bias. |
| VBR (min/max) | 143 V / 158 V at 1.0 mA - Confirmed avalanche onset range; ensures predictable turn-on across production lot. |
| VC @ IPPM | 207 V at 7.2 A (10/1000 μs) - Clamped voltage during worst-case transient; defines protected circuit's maximum overvoltage exposure. |
| PPPM | 1500 W - Peak pulse power rating per standard 10/1000 μs waveform; validates suitability for lightning-level threats. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on recommended 8.0 mm × 8.0 mm copper pads; enables thermal margin calculation. |
| IFSM | 200 A - Non-repetitive forward surge rating (10 ms half-sine); supports inrush tolerance in DC bus protection. |
| TJ max | +150 °C - Absolute maximum junction temperature; constrains PCB layout and system airflow requirements. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant (M3 suffix), matte tin-plated leads solderable per J-STD-002/JESD 22-B102, MSL Level 1 (260 °C peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased avalanche terminal | Connected to protected line; conducts when transient exceeds VWM; polarity must match circuit ground reference. |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return; completes clamping current path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Validates robustness against IEC 61000-4-5 Level 4 lightning surges on industrial and automotive power lines. |
| Glass passivated chip junction | Ensures stable VBR tolerance and low leakage (<1.0 μA) over temperature and lifetime. |
| Low inductance design | Minimizes voltage overshoot during fast-rising transients (e.g., <100 ns edges), critical for MOSFET gate protection. |
| Halogen-free, RoHS-compliant (M3) | Meets environmental compliance for automotive and industrial OEMs requiring material declarations per IEC 61249-2-21. |
Applications
| Automotive Power Distribution | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs and body control modules from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp positive-going spikes up to 1500 W. Use Value: Prevents latch-up or permanent damage to downstream PMICs and microcontrollers during ISO 7637-2 Pulse 5a/b events. | Use Scenario: Safeguarding PLC analog input channels and digital I/O from inductive kickback generated by solenoid valves and contactors. IC Role / Device Role / Timing Role: Standoff-rated clamping device on signal lines, absorbing 10/1000 μs transients induced by relay switching. Use Value: Maintains signal integrity below 207 V clamping threshold, avoiding false triggering or ADC saturation in 0–10 V sensor interfaces. |
| Telecom DC Power Feeds | Consumer Appliance Control Boards |
Use Scenario: Shielding PoE-powered Ethernet switches and base station RF front-end supplies from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary overvoltage protector on -48 V DC input rails, operating in unidirectional mode with cathode to rail. Use Value: Delivers 1500 W pulse handling without degradation, meeting Telcordia GR-1089-CORE Level 3 surge immunity requirements. | Use Scenario: Securing microcontroller GPIOs and display backlight drivers in washing machines and HVAC controllers exposed to relay and motor noise. IC Role / Device Role / Timing Role: Low-profile SMC-packaged TVS mounted adjacent to connectors to suppress ESD and switching noise on 5 V/3.3 V logic lines. Use Value: Enables automated placement and meets IEC 61000-4-2 Level 4 (±8 kV contact) via fast clamping response and low junction capacitance. |
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-E3/52 | Lower peak pulse power (600 W), same VWM/VBR range, SMB package (smaller footprint, higher RθJA = 90 °C/W) | Suitable for lower-energy threats (e.g., ESD-only zones); not rated for lightning-level surges per IEC 61000-4-5. | Select when space-constrained and threat level is ≤600 W; verify thermal margin on smaller pads. |
| 1.5KE150A | Through-hole DO-201 package, identical electrical specs (128 V VWM, 207 V VC), higher RθJA (60 °C/W on infinite heatsink) | Used where manual assembly or high-reliability through-hole mounting is required; incompatible with SMT lines. | Choose for legacy designs or high-vibration environments where mechanical retention outweighs automation benefits. |
Compared with SMBJ150A-E3/52 and 1.5KE150A, SM15T150A-M3/57T delivers 2.5× higher pulse power in an SMT-optimized SMC package with halogen-free compliance and MSL Level 1 reflow capability-making it the preferred choice for automotive and industrial surface-mount systems requiring IEC 61000-4-5 immunity.
Availability
SM15T150A-M3/57T is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive inputs, and telecom DC power feeds requiring stable component supply, halogen-free compliance, and verified 1500 W transient suppression.
Supply support for SM15T150A-M3/57T 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, power handling, and automotive qualification.
The SM15T Series is engineered for high-energy transient suppression in harsh environments-targeting automotive, industrial, and telecom applications where 1500 W pulse capability, low clamping voltage, and AEC-Q101 readiness (in HE3/HM3 variants) are critical.
FAQ
What is the clamping voltage of SM15T150A-M3/57T under a 10/1000 μs transient?
The SM15T150A-M3/57T clamps to a maximum of 207 V when subjected to its rated peak pulse current of 7.2 A using the standardized 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88380 and defines the upper voltage limit imposed on protected circuitry during surge events.
Is SM15T150A-M3/57T suitable for automotive applications?
SM15T150A-M3/57T is halogen-free and RoHS-compliant but not AEC-Q101 qualified; the automotive-grade variant is SM15T150AHM3_A/H. For non-safety-critical automotive subsystems where qualification is not mandated, SM15T150A-M3/57T remains viable-but full AEC-Q101 validation requires the HM3_X suffix version of SM15T150A-M3/57T.
What does the "M3" suffix indicate in SM15T150A-M3/57T?
The "M3" suffix in SM15T150A-M3/57T denotes halogen-free, RoHS-compliant construction with matte tin-plated leads, compliant with JESD 201 Class 2 whisker resistance and J-STD-020 MSL Level 1 (260 °C peak reflow). It distinguishes this commercial-grade variant from E3 (RoHS only) and HM3 (AEC-Q101 + halogen-free) versions.
Can SM15T150A-M3/57T be used in bidirectional configurations?
No-SM15T150A-M3/57T is strictly unidirectional, indicated by the "A" suffix and cathode band marking. Bidirectional equivalents use the "CA" suffix (e.g., SM15T150CA). Using SM15T150A-M3/57T in bidirectional circuits risks failure due to forward conduction during negative transients.
What is the thermal resistance of SM15T150A-M3/57T, and how is it measured?
SM15T150A-M3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W, measured with the device mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, per JEDEC standards. This value assumes no additional heatsinking and is used to calculate safe operating temperature rise under steady-state power dissipation.
SM15T150A-M3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- SM15T, 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)
SM15T150A-M3/57T FAQ
1.How can I place an order for SM15T150A-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T150A-M3/57T 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 SM15T150A-M3/57T reliable?
The price and inventory of SM15T150A-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T150A-M3/57T is usually 5 days.
3.What payment methods are accepted for SM15T150A-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T150A-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T150A-M3/57T?
SM15T150A-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T150A-M3/57T 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 SM15T150A-M3/57T?
For technical support, including SM15T150A-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T150A-M3/57T requirements.
6.How does Aetrix verify that SM15T150A-M3/57T is sourced from the original manufacturer or authorized distributors?
All SM15T150A-M3/57T 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 SM15T150A-M3/57T meets industry standards.
7.What is the process for return or replacement of SM15T150A-M3/57T?
All SM15T150A-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SM15T150A-M3/57T, 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 SM15T150A-M3/57T part is unused and in its original packaging.
Return procedure for SM15T150A-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T150A-M3/57T Tags
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