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Vishay General Semiconductor - Diodes Division 1.5SMC16CAHE3/57T
- Part No.:
- 1.5SMC16CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC16CAHE3/57T.pdf
- Description:
- TVS DIODE 13.6VWM 22.5VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:9,661
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Product details
Overview
1.5SMC16CAHE3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 16 V standoff voltage (VWM), 18.2 V minimum breakdown voltage (VBR), 22.5 V maximum clamping voltage (VC) at 66.7 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the 1.5SMC16CAHE3/57T datasheet, 1.5SMC16CAHE3/57T pinout, 1.5SMC16CAHE3/57T application, or 1.5SMC16CAHE3/57T equivalent, key selection criteria include bidirectional clamping performance, AEC-Q101 qualification, SMC (DO-214AB) package thermal resistance (RθJL = 15 °C/W), and compliance with UL 497B for surge protectors.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ at 13.6 V), but triggers into low-impedance conduction when transient voltage exceeds VBR (17.1–18.9 V), limiting downstream voltage to ≤22.5 V at 66.7 A. Its glass-passivated junction ensures stable avalanche characteristics and fast response (<1 ns).
Designed for repetitive surge suppression, it supports 0.01% duty cycle at 1500 W, derates linearly above 25 °C (per Fig. 2), and maintains operation across –65 °C to +150 °C junction temperature range. The bidirectional symmetry enables use on AC-coupled or floating differential lines without polarity concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 13.6 V - Maximum continuous reverse working voltage before leakage exceeds 1 μA; defines safe operating ceiling for steady-state signals. |
| VBR (Breakdown) | 17.1–18.9 V at 1 mA - Voltage at which device enters avalanche conduction; tight tolerance ensures predictable turn-on across production lots. |
| VC (Clamping) | 22.5 V at 66.7 A - Maximum voltage seen by protected circuit during 10/1000 μs surge; directly limits stress on downstream ICs like microcontrollers or transceivers. |
| PPPM | 1500 W - Peak pulse power handling capability with standard 10/1000 μs waveform; validates suitability for lightning-induced surges per IEC 61000-4-5 Level 4. |
| IR (Leakage) | <1 μA at 13.6 V - Ultra-low reverse leakage preserves signal integrity and battery life in always-on sensor nodes. |
| TJ max. | +150 °C - Enables deployment in under-hood automotive environments and high-temperature industrial enclosures without thermal derating penalties. |
| AEC-Q101 | Qualified - Confirmed reliability for automotive applications including engine control units, ADAS camera links, and body electronics per stress-test requirements. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic case meeting UL 94 V-0 flammability rating; terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102; no polarity marking (bidirectional).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (either polarity) | Acts as cathode during positive transients; bidirectional symmetry eliminates need for orientation-aware layout. |
| Cathode | Transient current exit (either polarity) | Acts as anode during negative transients; identical electrical behavior in both directions simplifies PCB routing. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC, differential, or floating bus lines (e.g., RS-485, CAN FD, USB D+/D−) without external diodes or polarity constraints. |
| 1500 W peak pulse power | Withstands 10/1000 μs surges up to 66.7 A - sufficient for IEC 61000-4-5 Level 4 (4 kV line-to-line, 2 kV line-to-ground) in properly coupled systems. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD testing - required for placement in safety-critical vehicle subsystems. |
| Low clamping ratio (VC/VBR ≈ 1.21) | Minimizes let-through voltage relative to breakdown threshold - critical for protecting 3.3 V or 5 V logic rails where margin above supply is narrow. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning - reduces manufacturing complexity and avoids moisture-related popcorning. |
Applications
| Automotive Sensor Interface | Industrial RS-485 Bus |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt TVS diode clamping transients before they reach ADC input or op-amp buffer stages. Use Value: Prevents latch-up or permanent damage to 16-bit SAR ADCs while maintaining <1 nA bias current error due to sub-μA leakage at 13.6 V. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers (e.g., SN65HVD230) on factory floor networks subject to ground loop surges and ESD events. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across A/B differential pair, referenced to local ground. Use Value: Limits common-mode surge voltage to ≤22.5 V, preserving transceiver's ±12 V common-mode range and preventing receiver saturation during transient recovery. |
| Telecom DSL Line Card | Consumer Smart Meter Power Input |
Use Scenario: Front-end protection of ADSL/VDSL line drivers against lightning-induced surges entering via outdoor copper pairs. IC Role / Device Role / Timing Role: Primary shunt suppressor mounted at connector interface, upstream of gas discharge tube (GDT) secondary stage. Use Value: Fast <1 ns response captures initial surge edge before GDT fires, reducing let-through energy by >40% versus GDT-only designs. |
Use Scenario: Input-stage surge protection for 230 VAC-powered smart meters subjected to utility grid switching transients and induced surges. IC Role / Device Role / Timing Role: Secondary clamp after MOV-based primary protection, absorbing residual high-frequency ringwave energy. Use Value: Clamps fast-rising 1 MHz ringwaves to ≤22.5 V, preventing false tripping of MCU brown-out detection and ensuring firmware continuity during grid disturbances. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16CA | Same VWM (13.6 V) and VC (22.5 V), but lower PPPM (600 W); SMB package (DO-214AA) has higher RθJA (100 °C/W vs. 75 °C/W). | Limited to lower-energy surges (IEC 61000-4-5 Level 2); less suitable for automotive under-hood locations due to thermal limitations. | Select when board space is constrained and surge threat level is moderate (e.g., indoor consumer devices). |
| 1.5KE16CA | Same electrical specs but axial-leaded DO-15 package; lacks AEC-Q101 qualification and MSL Level 1 rating. | Not suitable for automated SMT assembly or automotive applications; requires manual insertion and wave soldering. | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required. |
Compared with SMBJ16CA and 1.5KE16CA, the 1.5SMC16CAHE3/57T delivers higher surge robustness (1500 W vs. 600 W or unlisted), automotive qualification, and superior thermal performance in SMT form - making it the preferred choice for production-grade automotive, industrial, and telecom equipment.
Availability
1.5SMC16CAHE3/57T is available at Aetrix Electronics and suitable for automotive sensor protection, industrial communication interfaces, and telecom line-card surge mitigation requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant traceability.
Supply support for 1.5SMC16CAHE3/57T 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series targets high-energy transient suppression in harsh environments - engineered for automotive, industrial, and telecom systems where failure due to voltage surges must be eliminated through robust, qualified, and thermally efficient TVS solutions.
FAQ
What is the clamping voltage of the 1.5SMC16CAHE3/57T at its rated peak pulse current?
The 1.5SMC16CAHE3/57T exhibits a maximum clamping voltage (VC) of 22.5 V when subjected to its rated peak pulse current of 66.7 A with a 10/1000 μs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 8.0 mm × 8.0 mm copper pads), and represents the upper limit of voltage imposed on protected circuitry during surge events - critical for ensuring compatibility with 3.3 V or 5 V logic interfaces.
Is the 1.5SMC16CAHE3/57T suitable for automotive applications?
Yes, the 1.5SMC16CAHE3/57T is AEC-Q101 qualified and carries the "HE3" suffix denoting RoHS-compliant and automotive-grade construction. It has passed stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - confirming suitability for engine control units, ADAS camera modules, and body electronics where reliability under thermal and electrical stress is mandatory.
What does the "CA" suffix indicate in 1.5SMC16CAHE3/57T?
The "CA" suffix in 1.5SMC16CAHE3/57T designates a bidirectional configuration: the device provides symmetrical transient suppression for both polarities, with identical VBR, VC, and IPPM characteristics in either direction. This eliminates polarity marking on the SMC (DO-214AB) package and allows use on AC-coupled, differential, or floating signal paths such as RS-485, CAN, or audio lines.
What is the thermal resistance from junction to leads (RθJL) for the 1.5SMC16CAHE3/57T?
The 1.5SMC16CAHE3/57T has a typical thermal resistance from junction to leads (RθJL) of 15 °C/W, as specified in the Vishay datasheet. This low value enables efficient heat transfer from the silicon die to the PCB copper traces through the leads, supporting reliable operation at elevated ambient temperatures - especially important in densely packed automotive ECUs or industrial controllers where airflow is limited.
How does the 1.5SMC16CAHE3/57T differ from unidirectional variants like 1.5SMC16AHE3/57T?
The 1.5SMC16CAHE3/57T is bidirectional with symmetrical clamping in both directions, whereas 1.5SMC16AHE3/57T is unidirectional and features a cathode band marking. Electrically, the "CA" version has identical VWM (13.6 V), VBR (17.1–18.9 V), and VC (22.5 V) ratings but supports AC or floating applications without polarity constraints - unlike the "A" variant, which conducts only in reverse bias and requires correct orientation during placement.
1.5SMC16CAHE3/57T 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):
- 13.6V
- Voltage - Breakdown (Min):
- 15.2V
- Voltage - Clamping (Max) @ Ipp:
- 22.5V
- Current - Peak Pulse (10/1000µs):
- 66.7A
- 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)
1.5SMC16CAHE3/57T FAQ
1.How can I place an order for 1.5SMC16CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC16CAHE3/57T 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 1.5SMC16CAHE3/57T reliable?
The price and inventory of 1.5SMC16CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC16CAHE3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC16CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC16CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC16CAHE3/57T?
1.5SMC16CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC16CAHE3/57T 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 1.5SMC16CAHE3/57T?
For technical support, including 1.5SMC16CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC16CAHE3/57T requirements.
6.How does Aetrix verify that 1.5SMC16CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC16CAHE3/57T 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 1.5SMC16CAHE3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC16CAHE3/57T?
All 1.5SMC16CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC16CAHE3/57T, 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 1.5SMC16CAHE3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC16CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC16CAHE3/57T Tags
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Diodes Incorporated
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