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Vishay General Semiconductor - Diodes Division 1.5SMC20CAHE3_A/H
- Part No.:
- 1.5SMC20CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC20CAHE3_A/H.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC SMC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
1.5SMC20CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, rated for 1500 W peak pulse power with 10/1000 μs waveform, 20 V standoff voltage (VWM), and 27.7 V maximum clamping voltage (VC) at 54.2 A peak pulse current. It protects signal lines and power rails in automotive sensor units, industrial I/O interfaces, and telecom surge-prone circuits.
For engineers reviewing the 1.5SMC20CAHE3_A/H datasheet, 1.5SMC20CAHE3_A/H pinout, 1.5SMC20CAHE3_A/H application, or 1.5SMC20CAHE3_A/H equivalent, this AEC-Q101 qualified TVS offers verified bidirectional clamping, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for high-reliability automotive and industrial PCB designs requiring robust ESD and lightning transient immunity.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal bias it presents high impedance (>1000 MΩ at 17.1 V), but triggers into low-impedance conduction when reverse voltage exceeds its 20 V standoff threshold. Its glass-passivated junction enables sub-nanosecond response to transients and stable breakdown over temperature.
Designed for bidirectional protection, it delivers symmetrical clamping in both polarities without polarity marking, supports repetitive 0.01% duty-cycle surges, and maintains thermal stability via 15 °C/W junction-to-lead thermal resistance - enabling reliable operation up to 150 °C junction temperature with appropriate PCB copper pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 20 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin for 24 V nominal systems. |
| VBR (Breakdown) | 21.0 V min / 23.1 V max at 1 mA - Confirmed breakdown onset range ensures predictable turn-on across production lots. |
| VC (Clamping) | 27.7 V at 54.2 A (10/1000 μs) - Limits transient voltage seen by downstream ICs to ≤27.7 V during worst-case surge events. |
| PPPM | 1500 W - Peak pulse power handling capacity with standard 10/1000 μs waveform; validated on 8.0 mm × 8.0 mm copper pads. |
| ID (Leakage) | 1.0 μA max at 20 V - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits. |
| TJ max | +150 °C - Enables use in under-hood automotive environments and thermally constrained industrial enclosures. |
| AEC-Q101 | Qualified - Certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink (negative polarity) | Conducts during negative transients; connects to protected line or ground reference depending on circuit topology. |
| Cathode | Transient current sink (positive polarity) | Conducts during positive transients; symmetric role to Anode in bidirectional operation - no functional distinction in layout. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VWM (20 V), VBR, and VC performance in both directions - eliminates need for polarity-aware placement on PCB. |
| 1500 W peak pulse rating | Validated with 10/1000 μs waveform on standard 8.0 mm × 8.0 mm copper pads - meets IEC 61000-4-5 Level 4 surge requirements. |
| Glass-passivated junction | Ensures stable breakdown voltage, low leakage (<1 μA), and long-term reliability under thermal cycling and humidity stress. |
| MSL Level 1 | Unlimited floor life at ≤30 °C/85% RH - supports standard SMT assembly without baking or dry pack requirements. |
| AEC-Q101 qualification | Certified for automotive applications including engine control modules, ADAS sensors, and infotainment power rails. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN FD and LIN bus lines in vehicle cabin sensors against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed between signal line and chassis ground to limit transient voltage to <28 V. Use Value: Prevents latch-up or damage to transceiver ICs (e.g., TJA1044) during 100 V/50 ms load dump events. |
Use Scenario: Shielding 24 V digital input channels in programmable logic controllers from inductive kickback and EFT bursts. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on field-side terminals, upstream of optocouplers and level shifters. Use Value: Maintains signal integrity during 4 kV EFT (IEC 61000-4-4) by clamping spikes within 1 ns and dissipating 1500 W peak energy. |
| Telecom Power Rail Protection | Consumer USB Port ESD Protection |
Use Scenario: Safeguarding 48 V PoE-powered Ethernet switch ports against lightning-induced surges on data pairs and power lines. IC Role / Device Role / Timing Role: Secondary-level TVS deployed after gas discharge tube (GDT) primary protection to handle residual fast-rising transients. Use Value: Clamps 10/1000 μs surges to ≤27.7 V while surviving >1000 strikes - extends system MTBF in outdoor telecom cabinets. |
Use Scenario: Adding robust ESD immunity to USB 2.0 VBUS and D+/D− lines in smart home hubs and set-top boxes. IC Role / Device Role / Timing Role: Low-capacitance (≈200 pF) bidirectional clamp placed directly at connector to divert ±15 kV contact discharge (IEC 61000-4-2). Use Value: Prevents interface IC failure without degrading 480 Mbps signal integrity due to controlled clamping and minimal parasitic capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20CA | Same VWM (20 V) and bidirectional function, but lower PPPM (600 W) and larger SMB package (DO-214AA). | Lower surge rating suits consumer-grade 24 V systems; not recommended for automotive or industrial Level 4 surge compliance. | Select when cost and board space are prioritized over 1500 W surge headroom and AEC-Q101 qualification. |
| 1.5KE20CA | Through-hole TO-204AE (DO-15) package, same 20 V VWM and 1500 W rating, but higher thermal resistance (RθJA ≈ 100 °C/W). | Requires manual soldering or wave soldering; unsuitable for fully automated SMT lines and high-density layouts. | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required. |
Compared with SMBJ20CA and 1.5KE20CA, the 1.5SMC20CAHE3_A/H uniquely combines AEC-Q101 qualification, SMC's optimized thermal performance (RθJL = 15 °C/W), and full 1500 W capability in an automated-placement-ready package - making it the preferred choice for production automotive and industrial SMT assemblies demanding certified reliability.
Availability
1.5SMC20CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom power supply protection requiring stable component supply, AEC-Q101 traceability, and consistent 1500 W surge performance across production batches.
Supply support for 1.5SMC20CAHE3_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, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 1.5SMC Series was engineered specifically for surface-mount transient suppression in space-constrained, high-surge environments - emphasizing AEC-Q101 qualification, low-profile packaging, and repeatable clamping performance across temperature and lifetime.
FAQ
What is the clamping voltage of the 1.5SMC20CAHE3_A/H at its rated peak pulse current?
The 1.5SMC20CAHE3_A/H has a maximum clamping voltage (VC) of 27.7 V at 54.2 A peak pulse current with a 10/1000 μs waveform. This value is measured under standardized test conditions on 8.0 mm × 8.0 mm copper pads and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The 1.5SMC20CAHE3_A/H maintains this clamping performance symmetrically in both directions due to its bidirectional design.
Is the 1.5SMC20CAHE3_A/H suitable for automotive applications?
Yes, the 1.5SMC20CAHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix indicating RoHS-compliant and AEC-Q101 qualified construction. It meets requirements for under-hood and cabin applications including engine control units, ADAS camera modules, and body electronics - validated for temperature cycling, high-temperature reverse bias, and mechanical shock per AEC-Q101 standards. The 1.5SMC20CAHE3_A/H is referenced in Vishay's automotive ordering code documentation as a qualified part.
What does the "CA" suffix indicate in 1.5SMC20CAHE3_A/H?
The "CA" suffix in 1.5SMC20CAHE3_A/H denotes a bidirectional Transient Voltage Suppressor configuration. Unlike unidirectional variants (e.g., "A" suffix), the CA version provides identical electrical characteristics - including VWM, VBR, and VC - in both forward and reverse polarities, with no cathode band marking. This allows simplified PCB layout and eliminates polarity orientation concerns during automated placement. The 1.5SMC20CAHE3_A/H leverages this symmetry for balanced protection on AC-coupled or differential signal lines.
What is the maximum operating temperature for the 1.5SMC20CAHE3_A/H?
The 1.5SMC20CAHE3_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-temperature environments such as automotive engine compartments, industrial motor drives, and enclosed power supplies. Derating curves in the datasheet confirm usable power dissipation down to ambient temperatures of +125 °C when mounted per recommended pad layout. The 1.5SMC20CAHE3_A/H maintains specified clamping and leakage performance across this full range.
How does the 1.5SMC20CAHE3_A/H compare to unidirectional TVS diodes in circuit implementation?
The 1.5SMC20CAHE3_A/H differs from unidirectional TVS diodes by providing symmetrical clamping behavior - it conducts equally during positive and negative transients without requiring polarity-specific routing. Unidirectional devices like 1.5SMC20A require correct cathode orientation relative to ground, whereas the 1.5SMC20CAHE3_A/H eliminates this constraint and simplifies layout for AC signals, differential buses (e.g., RS-485), or dual-rail protection. Its bidirectional nature also avoids forward-voltage drop issues that can affect unidirectional parts in certain topologies.
1.5SMC20CAHE3_A/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 54.2A
- 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)
1.5SMC20CAHE3_A/H FAQ
1.How can I place an order for 1.5SMC20CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC20CAHE3_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 1.5SMC20CAHE3_A/H reliable?
The price and inventory of 1.5SMC20CAHE3_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 1.5SMC20CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC20CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC20CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC20CAHE3_A/H?
1.5SMC20CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC20CAHE3_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 1.5SMC20CAHE3_A/H?
For technical support, including 1.5SMC20CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC20CAHE3_A/H requirements.
6.How does Aetrix verify that 1.5SMC20CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC20CAHE3_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 1.5SMC20CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC20CAHE3_A/H?
All 1.5SMC20CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC20CAHE3_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 1.5SMC20CAHE3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC20CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC20CAHE3_A/H Tags
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