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Vishay General Semiconductor - Diodes Division 1.5SMC16CAHM3/H
- Part No.:
- 1.5SMC16CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC16CAHM3/H.pdf
- Description:
- TVS DIODE 13.6VWM 22.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,558
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Product details
Overview
1.5SMC16CAHM3/H from Vishay General Semiconductor is a bidirectional surface-mount 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 capability with a 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the 1.5SMC16CAHM3/H datasheet, 1.5SMC16CAHM3/H pinout, 1.5SMC16CAHM3/H application, or 1.5SMC16CAHM3/H equivalent, this device serves as a halogen-free, AEC-Q101-qualified TVS for high-reliability bidirectional surge suppression where low clamping ratio, fast response time, and MSL Level 1 solderability are required.
Technical Context
The 1.5SMC16CAHM3/H operates as a bidirectional avalanche diode, symmetrically clamping transient voltages above ±18.2 V while maintaining <5 μA reverse leakage at 13.6 V. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance under repetitive 10/1000 μs pulses at 0.01% duty cycle.
Thermally, it delivers 6.5 W steady-state power dissipation on an infinite heatsink at 50 °C and exhibits a junction-to-ambient thermal resistance of 75 °C/W. The device is rated for operation from –65 °C to +150 °C and meets JESD201 Class 2 whisker resistance and UL 94 V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 13.6 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 15.2–16.8 V at 1 mA - Verified avalanche onset range ensuring predictable turn-on during transients. |
| VC (Clamping) | 22.5 V at 66.7 A - Peak voltage seen by protected circuit during 10/1000 μs surge; enables downstream IC survival with >2.5 V headroom vs. 20 V rails. |
| PPPM | 1500 W - Sustains single high-energy surges (e.g., ISO 7637-2 Pulse 1/2b/5a) without degradation when mounted per recommended pad layout. |
| Package | SMC (DO-214AB) - Industry-standard 2-pin surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; supports automated placement and reflow. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC-Q101 Rev G. |
| RoHS & Halogen-Free | Compliant - Meets EU RoHS Directive 2011/65/EU and JEDEC JS709A halogen-free definition (<900 ppm Cl, <900 ppm Br, <1500 ppm total halogens). |
Pinout & Package
Package: SMC (DO-214AB), bidirectional configuration - no polarity marking; symmetrical terminals function identically as anode/cathode depending on transient polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal conducts during positive or negative transients; no fixed polarity - enables universal placement on AC-coupled or floating lines. |
| Terminal 2 | Anode / Cathode (bidirectional) | Electrically identical to Terminal 1; forms a symmetric clamp pair across protected node and ground/rail. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional 1500 W clamping | Protects AC, differential, or floating signal paths (e.g., RS-485, CAN, sensor bridges) without polarity constraints. |
| 22.5 V clamping at 66.7 A | Provides 4.9 V margin below 27.4 V absolute max rating of common 24 V industrial microcontrollers and transceivers. |
| MSL Level 1, 260 °C peak reflow | Eliminates moisture sensitivity concerns - compatible with standard lead-free reflow profiles without baking. |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure in automotive under-hood environments. |
| AEC-Q101 qualification (HM3 suffix) | Validated for automotive applications including body control modules, ADAS sensor interfaces, and infotainment power supplies. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control units exposed to load dump and ISO 7637-2 transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed between sensor output and MCU ADC input, shunting surges to chassis ground. Use Value: Maintains signal integrity by clamping transients to ≤22.5 V, preventing ADC saturation or latch-up in 3.3 V/5 V front-end circuits. |
Use Scenario: Shielding RS-485 transceiver bus lines (A/B) against ESD and lightning-induced surges in factory automation PLCs. IC Role / Device Role / Timing Role: Differential TVS connected across A–B and from each line to ground, suppressing common-mode and differential-mode transients. Use Value: Enables reliable 10 Mbps communication under IEC 61000-4-2 (±15 kV contact) and IEC 61000-4-5 (1 kV line-ground) stress conditions. |
| Telecom Power Input | Consumer USB-C Port Protection |
|
Use Scenario: Safeguarding 12–24 V DC input stages of VoIP gateways and base stations against induced surges from nearby AC wiring or antenna coupling. IC Role / Device Role / Timing Role: Primary TVS placed upstream of DC-DC converter input, absorbing energy before regulation stage. Use Value: Withstands 1500 W peak pulses without failure, preserving converter uptime and eliminating need for secondary crowbar circuits. |
Use Scenario: Protecting USB-C CC and VBUS lines in portable docking stations against hot-plug transients and ESD events. IC Role / Device Role / Timing Role: Bidirectional clamp on CC line (±5 V tolerance) and unidirectional variant on VBUS, coordinated for full-port hardening. Use Value: Achieves <100 ps response time and sub-25 V clamping, meeting USB-IF compliance for robust port interoperability and cable insertion safety. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode 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 (smaller footprint, higher RθJA = 85 °C/W). | Preferred for space-constrained consumer PCBs where surge energy rarely exceeds 600 W; unsuitable for automotive load-dump scenarios. | Select SMBJ16CA only if board area is critical and worst-case surge energy is confirmed ≤600 W. |
| 1.5KE16CA | Through-hole TO-204AA (DO-201AE); identical electrical specs but larger size, higher mounting inductance, and no AEC-Q101 qualification. | Used in legacy industrial power supplies where manual assembly or high-vibration mechanical retention is required. | Choose 1.5KE16CA only when through-hole assembly is mandated and automotive qualification is not needed. |
Compared with SMBJ16CA and 1.5KE16CA, the 1.5SMC16CAHM3/H uniquely combines AEC-Q101 qualification, halogen-free compliance, 1500 W surge capacity, and SMC's optimized thermal performance - making it the preferred choice for new automotive and high-reliability industrial designs requiring surface-mount scalability.
Availability
1.5SMC16CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor systems, industrial communication interfaces, telecom power inputs, and USB-C peripheral protection requiring stable component supply across extended production lifecycles.
Supply support for 1.5SMC16CAHM3/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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series was developed to deliver high-power, surface-mount TVS solutions for automotive, industrial, and telecom applications demanding AEC-Q101 qualification, low clamping voltage, and robust surge handling in compact SMC packages.
FAQ
What is the clamping voltage of the 1.5SMC16CAHM3/H under a 10/1000 μs surge?
The 1.5SMC16CAHM3/H has a maximum clamping voltage (VC) of 22.5 V at 66.7 A peak pulse current with a 10/1000 μs waveform. This value is measured per Fig. 1 and Fig. 3 of Vishay document 88303 and reflects worst-case clamping performance under standardized surge conditions - critical for verifying voltage headroom in protected circuits.
Is the 1.5SMC16CAHM3/H suitable for automotive applications?
Yes, the 1.5SMC16CAHM3/H is AEC-Q101 qualified (indicated by the HM3 suffix) and specifically tested for automotive reliability including temperature cycling, highly accelerated life testing, and ESD per Rev G. It is approved for use in engine control units, ADAS sensor interfaces, and body electronics where sustained surge immunity is mandatory.
What does the "CA" suffix mean in 1.5SMC16CAHM3/H?
The "CA" suffix in 1.5SMC16CAHM3/H denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike "A"-suffixed unidirectional parts, the CA version has no cathode band and functions identically regardless of voltage polarity applied across its terminals.
How does the SMC package of the 1.5SMC16CAHM3/H compare thermally to SMA or SMB?
The SMC (DO-214AB) package used by the 1.5SMC16CAHM3/H offers lower thermal resistance than SMA (DO-214AC) or SMB (DO-214AA): RθJA is 75 °C/W versus ~100 °C/W for SMB. This allows the 1.5SMC16CAHM3/H to sustain higher average power dissipation and recover faster between surges - especially important in repetitive transient environments like motor drives.
Does the 1.5SMC16CAHM3/H require a heatsink for standard operation?
No, the 1.5SMC16CAHM3/H does not require an external heatsink for typical transient suppression use. Its 6.5 W steady-state power dissipation rating assumes mounting on standard PCB copper pads (0.31" x 0.31"), and thermal performance is validated without added heatsinking. However, for continuous high-duty-cycle surge events, enhanced copper pour is recommended to maintain TJ ≤ 150 °C.
1.5SMC16CAHM3/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):
- 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:
- 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)
1.5SMC16CAHM3/H FAQ
1.How can I place an order for 1.5SMC16CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC16CAHM3/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 1.5SMC16CAHM3/H reliable?
The price and inventory of 1.5SMC16CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC16CAHM3/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC16CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC16CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC16CAHM3/H?
1.5SMC16CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC16CAHM3/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 1.5SMC16CAHM3/H?
For technical support, including 1.5SMC16CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC16CAHM3/H requirements.
6.How does Aetrix verify that 1.5SMC16CAHM3/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC16CAHM3/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 1.5SMC16CAHM3/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC16CAHM3/H?
All 1.5SMC16CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC16CAHM3/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 1.5SMC16CAHM3/H part is unused and in its original packaging.
Return procedure for 1.5SMC16CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC16CAHM3/H Tags
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