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Vishay General Semiconductor - Diodes Division 1.5SMC150CAHM3/H
- Part No.:
- 1.5SMC150CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC150CAHM3/H.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,919
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Product details
Overview
1.5SMC150CAHM3/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 under 7.2 A peak pulse current, and features a 128 V standoff voltage (VWM) with ≤1.0 μA leakage at 25 °C. It is 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/H datasheet, 1.5SMC150CAHM3/H pinout, 1.5SMC150CAHM3/H application, or 1.5SMC150CAHM3/H equivalent, this page provides verified electrical parameters, AEC-Q101 qualification status, SMC (DO-214AB) package dimensions, clamping behavior under standardized surge waveforms, and direct alternatives for automotive-grade transient suppression.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling robust protection without polarity sensitivity on AC-coupled or differential lines. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance, critical for consistent clamping during repetitive transients.
The device is rated for 150 °C maximum junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow compatibility. Its thermal resistance (RθJA = 75 °C/W) reflects performance on standard 8.0 mm × 8.0 mm copper pads - a key layout constraint for sustained power dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 128 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold |
| VC @ IPPM | 207 V - Clamped voltage at 7.2 A peak pulse current (10/1000 μs); determines protected circuit's maximum transient exposure |
| PPPM | 1500 W - Peak pulse power handling capability; enables survival of high-energy surges like IEC 61000-4-5 Level 4 |
| IPPM | 7.2 A - Peak pulse current supported at rated waveform; directly tied to PCB trace width and grounding strategy |
| Leakage @ VWM | ≤1.0 μA at 25 °C - Ultra-low DC leakage preserves signal integrity and minimizes standby power loss in always-on systems |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and high-temperature industrial enclosures |
| AEC-Q101 Qualified | Yes - Validated for automotive applications including engine control modules and ADAS sensor interfaces |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads solderable per J-STD-002. Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Terminal A | Bidirectional conduction path - no polarity marking; symmetrical connection for AC or differential line protection |
| Cathode | Terminal B | Same physical terminal as Anode in bidirectional configuration; functionally interchangeable due to symmetric structure |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-to-earth) without derating in standard layouts |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage stress on downstream ICs such as CAN transceivers or ADC front-ends |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive use including temperature cycling, humidity testing, and mechanical shock per AEC standards |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free assembly without moisture-related popcorning or delamination |
| UL 497B recognized (QVGQ2) | Meets safety requirements for telecom and industrial signal line protectors in certified end equipment |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting LIN/CAN bus nodes and temperature/pressure sensors in engine bay modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and ground, absorbing fast-rising transients before they reach MCU GPIO or analog front-end. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V sensor interface ICs while maintaining <1.0 μA leakage to avoid signal offset drift. |
Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers subjected to field wiring surges and ESD events. IC Role / Device Role / Timing Role: High-power transient shunt mounted at connector entry point, diverting >1 kV spikes away from precision op-amp and ADC stages. Use Value: Maintains measurement accuracy by limiting clamped voltage to 207 V, well below input stage breakdown thresholds of industrial-grade signal conditioners. |
| Telecom Line Card Protection | Consumer Power Adapter EMI Filter |
Use Scenario: Secondary-side surge suppression on Ethernet PHY or DSL line drivers where UL 497B compliance is required for safety certification. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp parallel to data line, activated within <1 ns to limit overshoot during lightning-induced common-mode surges. Use Value: Enables UL listing without additional series impedance, preserving signal rise time and jitter performance up to 100 Mbps. |
Use Scenario: Input-stage transient suppression in AC-DC adapters for smart home devices, guarding against mains-borne surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary protection element across bulk capacitor terminals, clamping MOV-induced let-through energy before it reaches primary-side controller. Use Value: Reduces need for oversized X/Y capacitors by absorbing 1500 W pulses, lowering BOM cost and board space vs. multi-stage solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA | Lower peak power (600 W), same VWM/VC, SMB package (smaller footprint, higher RθJA) | Suitable for space-constrained consumer electronics but not automotive under-hood or industrial high-surge zones | Select when board area is critical and surge threat level is limited to IEC 61000-4-5 Level 2 |
| 1.5KE150CA | Through-hole TO-204AA (DO-41), identical electrical specs, lower thermal performance (RθJA ≈ 100 °C/W) | Used in legacy industrial power supplies where manual assembly or high-reliability through-hole mounting is mandated | Choose only if SMT process is unavailable or mechanical robustness under vibration is prioritized over thermal efficiency |
Compared with 1.5SMC150CAHM3/H, SMBJ150CA trades surge capacity for compactness, while 1.5KE150CA retains full electrical performance at the cost of automated assembly compatibility and thermal derating - making 1.5SMC150CAHM3/H optimal for AEC-Q101-compliant SMT production targeting Level 4 surge immunity.
Availability
1.5SMC150CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, telecom line cards, and consumer power adapter designs requiring stable component supply with full AEC-Q101 traceability and halogen-free compliance.
Supply support for 1.5SMC150CAHM3/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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The 1.5SMC Series targets high-energy transient suppression in harsh environments, with design focus on automotive-grade robustness, UL safety recognition, and scalable SMT packaging for automated manufacturing.
FAQ
What is the clamping voltage of the 1.5SMC150CAHM3/H under its rated peak pulse current?
The 1.5SMC150CAHM3/H clamps at 207 V when subjected to its specified 7.2 A peak pulse current (10/1000 μs waveform). This value is measured per Figure 1 in the Vishay datasheet (Document Number 88303) and represents the maximum voltage seen by protected circuitry during a standardized surge event. The clamping voltage remains stable across temperature and lifetime due to the device's glass-passivated junction structure.
Is the 1.5SMC150CAHM3/H suitable for automotive applications?
Yes, the 1.5SMC150CAHM3/H is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's 1.5SMC Series datasheet. It undergoes rigorous testing for temperature cycling, humidity, mechanical shock, and high-temperature operating life - making it appropriate for engine control units, ADAS camera modules, and body electronics where transient immunity and long-term reliability are mandatory.
What does the "CA" suffix indicate in 1.5SMC150CAHM3/H?
The "CA" suffix in 1.5SMC150CAHM3/H denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression in both forward and reverse directions. Unlike unidirectional variants (e.g., "A" suffix), it has no cathode band marking and is used on AC-coupled lines, differential buses (e.g., RS-485), or any application where polarity cannot be guaranteed - a key distinction confirmed in Vishay's "DEVICES FOR BIDIRECTION APPLICATIONS" section.
What is the standoff voltage (VWM) of the 1.5SMC150CAHM3/H, and why does it matter?
The 1.5SMC150CAHM3/H has a standoff voltage (VWM) of 128 V, which is the maximum continuous DC or RMS voltage the device can withstand without entering conduction. This parameter ensures minimal leakage (<1.0 μA) during normal operation while providing sufficient margin below the 143–158 V breakdown range (VBR). Selecting a VWM correctly avoids false triggering in high-voltage systems like 120 VAC auxiliary supplies or 100 V DC bus monitoring.
How does the SMC (DO-214AB) package of the 1.5SMC150CAHM3/H compare thermally to smaller packages like SMB?
The SMC (DO-214AB) package of the 1.5SMC150CAHM3/H offers significantly better thermal performance than SMB: its typical RθJA is 75 °C/W (on 8.0 mm × 8.0 mm copper pads), versus ~120 °C/W for SMBJ devices. This allows the 1.5SMC150CAHM3/H to sustain higher average power dissipation and maintain lower junction temperatures during repetitive surges - a critical advantage in automotive and industrial applications where ambient temperatures exceed 85 °C.
1.5SMC150CAHM3/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:
- Discontinued at Digi-Key
- 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/H FAQ
1.How can I place an order for 1.5SMC150CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC150CAHM3/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/H reliable?
The price and inventory of 1.5SMC150CAHM3/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/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC150CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC150CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC150CAHM3/H?
1.5SMC150CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC150CAHM3/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/H?
For technical support, including 1.5SMC150CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC150CAHM3/H requirements.
6.How does Aetrix verify that 1.5SMC150CAHM3/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC150CAHM3/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/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC150CAHM3/H?
All 1.5SMC150CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC150CAHM3/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/H part is unused and in its original packaging.
Return procedure for 1.5SMC150CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC150CAHM3/H Tags
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