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Vishay General Semiconductor - Diodes Division 1.5SMC150CAHM3_A/H
- Part No.:
- 1.5SMC150CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC150CAHM3_A/H.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,126
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Product details
Overview
1.5SMC150CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-energy surge 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 <1 μA leakage at 25 °C. It is AEC-Q101 qualified and used to protect automotive sensor interfaces and industrial I/O circuits against lightning-induced transients and inductive switching spikes.
For engineers reviewing the 1.5SMC150CAHM3_A/H datasheet, 1.5SMC150CAHM3_A/H pinout, 1.5SMC150CAHM3_A/H application, or 1.5SMC150CAHM3_A/H equivalent, this device serves as a halogen-free, RoHS-compliant, bidirectional TVS for robust overvoltage protection where low clamping voltage, fast response (<1 ns), and MSL Level 1 reflow compatibility are critical design requirements.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance, while its SMC (DO-214AB) package supports automated placement and meets UL 94 V-0 flammability rating.
The device is rated for continuous operation from –65 °C to +150 °C junction temperature, with thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-leads). It complies with AEC-Q101 for automotive applications and is specified for repetitive surge duty cycle ≤0.01 % under 10/1000 μs waveform conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 1500 W - sustains high-energy transients without failure in automotive and industrial surge environments |
| Standoff Voltage (VWM) | 128 V - maximum continuous reverse voltage before significant conduction begins; defines operating margin below clamping |
| Clamping Voltage (VC @ IPPM) | 207 V - maximum voltage seen by protected circuit during 7.2 A transient; determines stress on downstream components |
| Breakdown Voltage (VBR min/max) | 143 V / 158 V - tight 5.3% tolerance ensures predictable turn-on and consistent protection threshold |
| Leakage Current (ID @ VWM) | <1 μA - negligible standby power loss and no signal distortion in high-impedance sensing or communication lines |
| Junction Temperature Range | –65 °C to +150 °C - enables deployment in under-hood automotive, industrial motor drives, and outdoor telecom equipment |
| Package | SMC (DO-214AB) - standardized surface-mount outline with 8.0 mm × 8.0 mm copper pad footprint for optimal thermal dissipation |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional - no polarity marking; symmetrical two-terminal construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal functions identically; no polarity dependency - simplifies PCB layout and eliminates orientation errors |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 1; forms a symmetric clamp path for ± transients on AC or differential lines |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HAST, and mechanical shock per JESD22 standards |
| Halogen-free & RoHS-compliant | Meets global environmental regulations and enables use in green manufacturing without compromising surge performance |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles - no moisture sensitivity handling required pre-assembly |
| 1500 W peak pulse power | Protects against IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) without derating in typical layouts |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift in harsh environments |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN FD and LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt surge energy before it reaches signal conditioning ICs. Use Value: Clamps 128 V standoff to 207 V within nanoseconds, preserving signal integrity and preventing latch-up or damage to 5 V/3.3 V interface ICs. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers exposed to relay coil flyback and ESD events on factory floor wiring. IC Role / Device Role / Timing Role: Primary overvoltage clamp on field-side terminals, coordinated with series impedance and filtering to meet IEC 61000-4-4/4-5 immunity requirements. Use Value: Withstands 1500 W pulses without degradation, enabling long-term reliability in unattended industrial automation systems. |
| Telecom Line Interface Protection | Power Supply Input Protection |
|
Use Scenario: Shielding Ethernet PHY front-ends and RS-485 transceivers in outdoor base stations from induced lightning surges on twisted-pair cabling. IC Role / Device Role / Timing Role: First-stage TVS in multi-level protection scheme, absorbing bulk surge energy before secondary MOV or GDT stages. Use Value: Symmetric bidirectional response ensures equal protection for both data line polarities, eliminating need for dual unidirectional devices. |
Use Scenario: Guarding 12–48 V DC input rails of embedded power supplies in medical and test equipment against accidental AC mains coupling or capacitor discharge events. IC Role / Device Role / Timing Role: Standoff-rated clamp placed upstream of input filter capacitors and primary-side controller ICs. Use Value: Low leakage (<1 μA) prevents standby current drain; 150 °C TJ rating supports operation in enclosed, thermally constrained enclosures. |
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 peak power (600 W), same VWM (128 V), SMB package (smaller footprint, higher RθJA = 110 °C/W) | Best suited for space-constrained, lower-energy applications (e.g., consumer USB ports); not recommended for automotive load-dump | Select when board area is critical and surge threat level is ≤IEC 61000-4-5 Level 2 |
| 1.5KE150CA | Through-hole DO-201 package, same electrical specs but no AEC-Q101 qualification or MSL Level 1 rating | Applicable in legacy industrial designs with through-hole assembly; unsuitable for modern automotive SMT production | Choose only for cost-sensitive, non-automotive, non-reflow applications requiring identical clamping behavior |
Compared with SMBJ150CA and 1.5KE150CA, the 1.5SMC150CAHM3_A/H uniquely combines AEC-Q101 qualification, 1500 W capability, and MSL Level 1 compatibility in an SMC package - making it the only option among the three qualified for volume automotive electronics production with zero reflow process risk.
Availability
1.5SMC150CAHM3_A/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O modules, telecom line interface protection, and DC power supply input hardening requiring stable component supply and full traceability.
Supply support for 1.5SMC150CAHM3_A/H 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, and protection devices with emphasis on reliability, precision, and application-specific validation.
The 1.5SMC Series was engineered for high-reliability transient suppression in automotive, industrial, and telecom infrastructure - prioritizing tight VBR tolerance, low clamping ratio, and AEC-Q101 compliance from wafer to final test.
FAQ
What is the clamping voltage of the 1.5SMC150CAHM3_A/H under maximum rated surge current?
The 1.5SMC150CAHM3_A/H has 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 at TA = 25 °C on specified 8.0 mm × 8.0 mm copper pads and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The 1.5SMC150CAHM3_A/H maintains this clamping performance consistently due to its glass-passivated junction and low incremental surge resistance.
Is the 1.5SMC150CAHM3_A/H suitable for automotive applications?
Yes, the 1.5SMC150CAHM3_A/H is AEC-Q101 qualified and explicitly designated for automotive use via its HM3 suffix and "_A/H" ordering code. It undergoes rigorous stress testing including temperature cycling, highly accelerated stress testing (HAST), and mechanical shock per JESD22 standards. The 1.5SMC150CAHM3_A/H is deployed in engine control units, body control modules, and ADAS sensor interfaces where protection against load-dump, jump-start, and ESD events is mission-critical.
Does the 1.5SMC150CAHM3_A/H have polarity markings on the package?
No, the 1.5SMC150CAHM3_A/H is a bidirectional TVS diode and carries no polarity marking on its SMC (DO-214AB) package. Its symmetrical internal structure allows either terminal to serve as anode or cathode depending on transient polarity - eliminating orientation concerns during automated placement and simplifying PCB layout. This distinguishes it from unidirectional variants like 1.5SMC150AHM3_A/H, which feature a cathode band.
What is the thermal resistance of the 1.5SMC150CAHM3_A/H, and how does it affect PCB layout?
The 1.5SMC150CAHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-leads (RθJL) of 15 °C/W when mounted on the recommended 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal. To maintain safe junction temperatures under repeated surge conditions, PCB layout must replicate this pad area and ensure adequate copper pour connectivity. Reducing pad size increases RθJA, risking thermal runaway during high-duty-cycle transients - a key design constraint for the 1.5SMC150CAHM3_A/H.
How does the 1.5SMC150CAHM3_A/H compare to unidirectional versions like 1.5SMC150AHM3_A/H?
The 1.5SMC150CAHM3_A/H is bidirectional with symmetrical clamping in both polarities and no cathode band, whereas 1.5SMC150AHM3_A/H is unidirectional with a marked cathode end and forward conduction capability. Electrically, the 1.5SMC150CAHM3_A/H has identical VWM (128 V), VBR (143–158 V), and VC (207 V) ratings but differs in leakage behavior under forward bias - which is irrelevant for pure clamping applications. Use the 1.5SMC150CAHM3_A/H for AC, differential, or polarity-agnostic protection; choose the unidirectional version only when forward conduction or DC blocking is required.
1.5SMC150CAHM3_A/H 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC150CAHM3_A/H FAQ
1.How can I place an order for 1.5SMC150CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC150CAHM3_A/H 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 1.5SMC150CAHM3_A/H reliable?
The price and inventory of 1.5SMC150CAHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC150CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC150CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC150CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC150CAHM3_A/H?
1.5SMC150CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC150CAHM3_A/H 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 1.5SMC150CAHM3_A/H?
For technical support, including 1.5SMC150CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC150CAHM3_A/H requirements.
6.How does Aetrix verify that 1.5SMC150CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC150CAHM3_A/H 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 1.5SMC150CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC150CAHM3_A/H?
All 1.5SMC150CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC150CAHM3_A/H, 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 1.5SMC150CAHM3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC150CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC150CAHM3_A/H Tags
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