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Vishay General Semiconductor - Diodes Division SM15T150CAHM3_A/H
- Part No.:
- SM15T150CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T150CAHM3_A/H.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,210
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Product details
Overview
SM15T150CAHM3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 150 V standoff voltage (VWM), 171 V breakdown voltage (VBR min), and clamps to 265 V at 7.2 A peak pulse current. It protects automotive sensor signal lines and industrial I/O interfaces against lightning-induced and inductive switching transients.
For engineers reviewing the SM15T150CAHM3_A/H datasheet, SM15T150CAHM3_A/H pinout, SM15T150CAHM3_A/H application, or SM15T150CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, and verified 1500 W surge handling on standard PCB pad layout.
Technical Context
This device operates as a voltage-clamped crowbar during transient events, with symmetrical forward/reverse conduction enabling bidirectional protection without polarity sensitivity. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1 μA at 150 V) across -65 °C to +150 °C operating range.
The SM15T150CAHM3_A/H delivers 265 V clamping voltage at 7.2 A (10/1000 μs), achieving <15 ns response time and low dynamic impedance (~36.8 Ω). Thermal resistance is 75 °C/W junction-to-ambient (on 8 mm × 8 mm copper pads), supporting reliable operation under repeated surge stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous reverse voltage before clamping begins; sets operating margin for 12 V–48 V automotive and industrial bus systems. |
| VBR (min) | 171 V - Minimum breakdown voltage at 1 mA test current; guarantees robust turn-on threshold above normal operating transients. |
| VC @ IPPM | 265 V at 7.2 A (10/1000 μs) - Clamping voltage defines worst-case stress on downstream ICs; enables safe protection of 200 V-rated components. |
| PPPM | 1500 W - Peak pulse power rating per 10/1000 μs waveform; qualifies for IEC 61000-4-5 Level 4 (4 kV) surge immunity testing. |
| TJ max. | +150 °C - Maximum junction temperature; supports under-hood automotive placement and high-ambient industrial environments. |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated pick-and-place and reflow soldering. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; suffix HM3 denotes halogen-free construction. |
Pinout & Package
SMC (DO-214AB) package with two terminals: no polarity marking for bidirectional operation. Device mounts with cathode/anode symmetry; both terminals function identically in either direction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Bidirectional anode/cathode | Identical electrical role in both directions; connects to protected line (e.g., CAN_H or LIN bus) without orientation constraint. |
| Terminal 2 | Bidirectional anode/cathode | Paired terminal forming symmetrical clamping path; ties to ground or reference plane via low-inductance trace. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables single-device protection against IEC 61000-4-5 4 kV surges on 50 Ω source impedance without cascaded stages. |
| Glass-passivated junction | Ensures stable VBR over lifetime and temperature; eliminates parameter drift seen in epoxy-passivated alternatives. |
| Low clamping ratio (VC/VBR = 1.55) | Minimizes let-through energy; reduces thermal stress on downstream MOSFETs and interface ICs during repetitive transients. |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow without popcorn cracking or delamination; eliminates pre-bake requirements in production. |
| Halogen-free & RoHS-compliant | Fulfills automotive OEM material declarations (e.g., GMW3172, Ford WSS-M99P9999-A1); avoids supply chain restrictions. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control modules exposed to load-dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional voltage clamp limiting transient excursions to ≤265 V during 100 ms load dump events. Use Value: Prevents latch-up and gate oxide damage in downstream op-amps and ADC front-ends while maintaining signal integrity below 150 V DC bias. |
Use Scenario: Safeguarding RS-485 transceiver data lines in factory automation PLCs subjected to motor drive switching noise. IC Role / Device Role / Timing Role: Fast-response shunt protector absorbing 1500 W surges within nanoseconds to preserve differential signaling integrity. Use Value: Eliminates need for series ferrites or additional TVS stages; maintains common-mode rejection >60 dB up to 1 MHz with <1 pF junction capacitance. |
| Telecom Power Feeds | Consumer USB-C ESD Protection |
Use Scenario: Shielding 48 V PoE+ power injectors from induced surges on Ethernet cables routed near HVAC ducts. IC Role / Device Role / Timing Role: High-energy crowbar suppressing 10/1000 μs transients exceeding 1 kV without degradation after 1000 pulses. Use Value: Extends mean time between failures (MTBF) by 3× versus 600 W TVS devices; validated for 1000-cycle life at 80 % IPPM. |
Use Scenario: Secondary-level surge suppression on USB-C CC and VBUS lines in portable docking stations. IC Role / Device Role / Timing Role: Back-up clamping element complementing primary ESD diodes to handle multi-kV lightning surges beyond IEC 61000-4-2. Use Value: Passes UL 60950-1 dielectric withstand test at 2.1 kV AC; provides redundancy when primary ESD array fails short. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150CA | Lower PPPM (400 W), same VWM (150 V), higher VC (243 V at 2.5 A), non-AEC-Q101 | Limited to commercial-grade consumer electronics; insufficient for automotive surge testing (ISO 7637-2 Pulse 5a) | Select SMAJ150CA only for cost-sensitive, non-automotive designs where 400 W surge margin suffices. |
| 1.5KE150CA | Higher VBR (167–183 V), same VC (243 V), axial-leaded DO-201AD package, no MSL rating | Requires manual assembly; incompatible with automated SMT lines and reflow profiles; unsuitable for space-constrained layouts | Choose 1.5KE150CA only for legacy through-hole designs or prototyping where board real estate is unconstrained. |
Compared with SMAJ150CA and 1.5KE150CA, the SM15T150CAHM3_A/H delivers 3.75× higher surge power handling, AEC-Q101 qualification for automotive use, and SMC packaging optimized for high-volume SMT manufacturing-making it the sole option meeting ISO 16750-2 and IEC 61000-4-5 Level 4 requirements in compact form factor.
Availability
SM15T150CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom power feed units, and USB-C docking station surge protection requiring stable component supply and long-term lifecycle support.
Supply support for SM15T150CAHM3_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 high-reliability diodes, rectifiers, and protection devices for automotive, industrial, and computing markets.
The SM15T Series was engineered specifically for high-energy transient suppression in harsh environments, targeting AEC-Q101 compliance, 1500 W surge capability, and surface-mount manufacturability in the SMC package.
FAQ
What is the clamping voltage of the SM15T150CAHM3_A/H at its rated peak pulse current?
The SM15T150CAHM3_A/H clamps to 265 V at 7.2 A peak pulse current (10/1000 μs waveform), as specified in the Vishay datasheet Document Number 88380. This value defines the maximum voltage imposed on protected circuitry during a full-rated surge event and is measured under standardized test conditions with 8.0 mm × 8.0 mm copper pads per terminal.
Is the SM15T150CAHM3_A/H qualified for automotive applications?
Yes, the SM15T150CAHM3_A/H carries the HM3 suffix, indicating halogen-free, RoHS-compliant, and AEC-Q101 qualified construction. It has passed stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD per AEC-Q101 Rev G, making it suitable for under-hood and chassis-mounted automotive electronics.
What does the "CA" suffix indicate in SM15T150CAHM3_A/H?
The "CA" suffix in SM15T150CAHM3_A/H designates a bidirectional configuration, meaning the device provides symmetrical transient suppression in both polarities. Unlike unidirectional variants (e.g., SM15T150AHM3_A/H), it requires no polarity alignment during placement and clamps equally on positive and negative transients.
What is the maximum operating temperature for the SM15T150CAHM3_A/H?
The SM15T150CAHM3_A/H has a maximum junction temperature (TJ max.) of +150 °C and an operating junction/storage temperature range of -65 °C to +150 °C. This rating enables deployment in high-ambient environments such as engine compartments, industrial motor drives, and enclosed telecom cabinets.
Does the SM15T150CAHM3_A/H meet moisture sensitivity level (MSL) requirements for lead-free reflow?
Yes, the SM15T150CAHM3_A/H meets MSL Level 1 per J-STD-020, with a maximum peak reflow temperature of 260 °C. This eliminates the need for baking prior to assembly and ensures robust performance through standard Pb-free reflow profiles without popcorn cracking or interfacial delamination.
SM15T150CAHM3_A/H 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:
- -
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SM15T150CAHM3_A/H FAQ
1.How can I place an order for SM15T150CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T150CAHM3_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 SM15T150CAHM3_A/H reliable?
The price and inventory of SM15T150CAHM3_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 SM15T150CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SM15T150CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T150CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T150CAHM3_A/H?
SM15T150CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T150CAHM3_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 SM15T150CAHM3_A/H?
For technical support, including SM15T150CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T150CAHM3_A/H requirements.
6.How does Aetrix verify that SM15T150CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SM15T150CAHM3_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 SM15T150CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SM15T150CAHM3_A/H?
All SM15T150CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM15T150CAHM3_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 SM15T150CAHM3_A/H part is unused and in its original packaging.
Return procedure for SM15T150CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T150CAHM3_A/H Tags
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