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Vishay General Semiconductor - Diodes Division SM15T150CAHE3_A/H
- Part No.:
- SM15T150CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T150CAHE3_A/H.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,868
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Product details
Overview
SM15T150CAHE3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) 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 265 V clamping voltage (VC) at 38 A IPPM. It protects automotive-grade signal lines and power rails against lightning-induced surges and inductive switching transients.
For engineers reviewing the SM15T150CAHE3_A/H datasheet, SM15T150CAHE3_A/H pinout, SM15T150CAHE3_A/H application, or SM15T150CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 150 V VWM compatibility with 24 V/48 V systems, and SMC package suitability for high-reliability automotive PCB layouts.
Technical Context
This TVS diode operates in bidirectional mode with symmetrical clamping in both polarities, enabling protection of AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1 μA at VWM).
The device features low dynamic impedance and fast response time (<1 ns), delivering consistent clamping performance under 10/1000 μs surge waveforms. Thermal resistance (RθJL = 15 °C/W) supports reliable power dissipation when mounted on recommended 8.0 mm × 8.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous reverse operating voltage before clamping begins; matches 24 V/48 V system bus tolerances. |
| VBR (min) | 171 V - Minimum breakdown voltage at 1 mA test current; ensures robust margin above VWM to prevent false triggering. |
| VC @ IPPM | 265 V - Clamping voltage at 38 A peak pulse current (10/1000 μs); defines maximum voltage seen by protected circuit during surge. |
| PPPM | 1500 W - Peak pulse power handling capability; sufficient for IEC 61000-4-5 Level 4 (4 kV line-to-line) surge immunity. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments. |
| AEC-Q101 | Qualified - Validated for automotive applications per stress test requirements including HTOL, TCT, and ESD. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile, RoHS-compliant, matte tin-plated leads. Molding compound meets UL 94 V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; reverse-biased path in negative transients | One side of symmetrical bidirectional structure; no polarity marking on device body. |
| Cathode | Current exit terminal in forward bias; reverse-biased path in positive transients | Second side of symmetrical bidirectional structure; terminals are functionally identical for clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., CAN FD, LIN), or ungrounded power domains without polarity constraints. |
| AEC-Q101 qualification | Validates reliability for automotive powertrain, body control, and ADAS modules requiring extended temperature cycling and humidity testing. |
| 1500 W peak pulse rating | Supports compliance with ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 surge standards in 12 V/24 V vehicle architectures. |
| Low clamping ratio (VC/VBR ≈ 1.55) | Minimizes overvoltage stress on downstream ICs such as microcontrollers, transceivers, and sensor front-ends. |
Applications
| Automotive Power Distribution | Industrial Sensor Interface |
|---|---|
Use Scenario: Protection of 24 V supply rail feeding ECUs in commercial vehicles exposed to load-dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional TVS clamp limiting voltage excursions to ≤265 V during 300 ms load-dump events. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic supplies derived from protected rail via DC/DC converters. |
Use Scenario: Surge suppression on 4–20 mA current-loop sensor outputs in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Fast-response transient absorber placed across loop terminals to shunt induced energy from motor drives or relay coils. Use Value: Maintains analog accuracy by limiting common-mode voltage spikes to <265 V, preserving ADC input integrity and isolation barrier ratings. |
| Automotive CAN FD Bus | Telecom DC Power Feeds |
Use Scenario: Secondary-level protection on CAN FD transceiver lines (CANH/CANL) in gateway modules subjected to ESD and coupled noise. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp absorbing ±25 kV contact ESD per IEC 61000-4-2 while maintaining signal integrity. Use Value: Enables robust communication up to 5 Mbps without signal distortion, thanks to symmetrical clamping and sub-1 ns response. |
Use Scenario: Input-stage surge protection for PoE-powered network switches accepting -48 V DC from telecom central offices. IC Role / Device Role / Timing Role: Primary overvoltage limiter on DC input before upstream DC/DC conversion and hot-swap controllers. Use Value: Withstands repeated 10/1000 μs surges up to 1500 W, ensuring uptime during lightning-induced grid disturbances on long cable runs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150CA | Same VWM (150 V), lower PPPM (400 W), SMA package (smaller thermal mass) | Limited to lower-energy threats (IEC 61000-4-2 ESD only); not suitable for IEC 61000-4-5 Level 3+ surges | Select when board space is constrained and surge threat level is limited to ESD or low-energy switching noise. |
| 1.5KE150CA | Same VWM (150 V), higher IPPM (43.3 A), axial lead DO-201 package | Requires through-hole mounting; unsuitable for automated SMT assembly or high-vibration environments | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required. |
Compared with SMAJ150CA and 1.5KE150CA, SM15T150CAHE3_A/H delivers 3.75× higher surge power handling in an SMT-optimized AEC-Q101 qualified package, making it the preferred choice for production automotive and industrial systems requiring validated reliability and high-energy transient immunity.
Availability
SM15T150CAHE3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, CAN FD bus protection, and telecom DC power feed applications requiring stable component supply and long-term lifecycle support.
Supply support for SM15T150CAHE3_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, TVS devices, and optoelectronics with emphasis on high-reliability and automotive-grade solutions.
The SM15T Series is designed specifically for high-power transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where AEC-Q101 qualification and 1500 W surge capability are mandatory.
FAQ
What does the "CA" suffix indicate in SM15T150CAHE3_A/H?
The "CA" suffix denotes a bidirectional configuration, meaning SM15T150CAHE3_A/H provides symmetrical clamping for both positive and negative voltage transients. Unlike unidirectional variants (e.g., SM15T150A), it has no cathode marking and functions identically in either polarity-critical for protecting AC-coupled or floating signal lines like CAN FD or RS-485.
Is SM15T150CAHE3_A/H suitable for automotive applications?
Yes, SM15T150CAHE3_A/H is AEC-Q101 qualified and manufactured with HE3 suffix indicating automotive-grade qualification. It meets requirements for temperature cycling, humidity testing, and mechanical shock, making it appropriate for engine control units, body electronics, and ADAS modules operating from −40 °C to +125 °C ambient.
What is the clamping voltage of SM15T150CAHE3_A/H at its rated peak pulse current?
The clamping voltage (VC) of SM15T150CAHE3_A/H is 265 V at 38 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88380 and defines the maximum voltage imposed on protected circuitry during worst-case surge conditions.
How does the SMC (DO-214AB) package of SM15T150CAHE3_A/H compare thermally to SMA or SMB packages?
SM15T150CAHE3_A/H in SMC package offers lower thermal resistance (RθJL = 15 °C/W) than SMA (RθJL ≈ 25 °C/W) due to larger copper pad area and enhanced leadframe design. When mounted on 8.0 mm × 8.0 mm pads, it sustains higher surge duty cycles without exceeding TJ(max) = 150 °C-critical for repetitive surge environments.
Does SM15T150CAHE3_A/H require derating at elevated ambient temperatures?
Yes, SM15T150CAHE3_A/H must be derated above TA = 25 °C per Figure 2 in Vishay document 88380. At 85 °C ambient, peak pulse power drops to ~850 W (57% of 1500 W), and at 125 °C, it falls to ~450 W (30%). Designers must verify clamping performance under worst-case thermal conditions using the published derating curve.
SM15T150CAHE3_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 (SMCJ)
SM15T150CAHE3_A/H FAQ
1.How can I place an order for SM15T150CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T150CAHE3_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 SM15T150CAHE3_A/H reliable?
The price and inventory of SM15T150CAHE3_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 SM15T150CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SM15T150CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T150CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T150CAHE3_A/H?
SM15T150CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T150CAHE3_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 SM15T150CAHE3_A/H?
For technical support, including SM15T150CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T150CAHE3_A/H requirements.
6.How does Aetrix verify that SM15T150CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SM15T150CAHE3_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 SM15T150CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SM15T150CAHE3_A/H?
All SM15T150CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM15T150CAHE3_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 SM15T150CAHE3_A/H part is unused and in its original packaging.
Return procedure for SM15T150CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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