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Vishay General Semiconductor - Diodes Division 1.5SMC22CAHE3/57T
- Part No.:
- 1.5SMC22CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC22CAHE3/57T.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:5,003
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Product details
Overview
1.5SMC22CAHE3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 22 V breakdown voltage (VBR = 20.9–23.1 V at 1 mA), 18.8 V stand-off voltage (VWM), clamps to ≤30.6 V at 49 A peak pulse current (10/1000 μs), and delivers 1500 W peak pulse power. It is AEC-Q101 qualified and RoHS-compliant, targeting automotive sensor line and power rail protection.
For engineers reviewing the 1.5SMC22CAHE3/57T datasheet, 1.5SMC22CAHE3/57T pinout, 1.5SMC22CAHE3/57T application, or 1.5SMC22CAHE3/57T equivalent, key selection criteria include bidirectional clamping behavior, 1500 W surge capability with 10/1000 μs waveform, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), and compatibility with automated SMT placement on standard SMC footprints.
Technical Context
The 1.5SMC22CAHE3/57T operates as a bidirectional avalanche diode, symmetrically clamping voltage transients in both polarities without polarity marking. Its glass-passivated junction enables fast response (<1 ns) and low incremental surge resistance, critical for suppressing ESD and lightning-induced surges on signal or power lines.
It is rated for repetitive 10/1000 μs pulses at 0.01% duty cycle, derated above TA = 25 °C per Fig. 2, and supports operating junction temperatures from –65 °C to +150 °C. Mounting on 8.0 mm × 8.0 mm copper pads ensures thermal performance meets RθJL = 15 °C/W and RθJA = 75 °C/W specifications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at IT = 1 mA - defines precise avalanche onset threshold for reliable clamping initiation |
| VWM | 18.8 V - maximum continuous reverse voltage before leakage exceeds 1 μA; sets safe operating margin below VBR |
| VC @ IPPM | ≤30.6 V at 49 A (10/1000 μs) - actual clamped voltage seen by protected circuit during worst-case surge |
| PPPM | 1500 W - peak transient power handling capacity under standardized surge waveform |
| IPPM | 49 A - maximum non-repetitive surge current the device can safely divert without failure |
| TJ max. | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, used to calculate temperature rise under DC power dissipation |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking. Cathode/anode terminals are symmetrical; device functions identically in either orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity surge) | One terminal of symmetrical avalanche junction; accepts surge current in reverse bias direction |
| Cathode | Transient current entry (positive polarity surge) | Other terminal of symmetrical avalanche junction; accepts surge current in opposite reverse bias direction |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 1500 W peak pulse power (10/1000 μs) | Supports high-energy surge immunity per ISO 7637-2 and IEC 61000-4-5 Level 4 requirements |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control, ADAS sensors, and infotainment interfaces |
| MSL Level 1 (260 °C reflow) | Permits standard lead-free SMT assembly without moisture sensitivity limitations or baking requirements |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage (<1 μA at VWM) across temperature and lifetime |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector interface to clamp ±30 V surges before they reach signal conditioning ICs or microcontroller inputs. Use Value: Limits transient voltage to ≤30.6 V, preventing latch-up or gate oxide damage in downstream 3.3 V/5 V logic while maintaining signal integrity. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring faults and relay coil flyback. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input channel, positioned upstream of optocoupler or Schmitt trigger input stage. Use Value: Absorbs up to 1500 W surge energy without degradation, ensuring >100,000 surge cycles per IEC 61000-4-5 and eliminating need for secondary protection stages. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Protecting Ethernet PHY or RS-485 transceivers connected to outside plant wiring exposed to lightning-induced surges. IC Role / Device Role / Timing Role: First-line bidirectional clamp on differential pair, coordinated with common-mode chokes and GDTs in multi-stage architecture. Use Value: Fast <1 ns response captures initial surge edge; low clamping voltage preserves receiver common-mode range and prevents data corruption. |
Use Scenario: Input-stage surge suppression in AC-DC adapters for smart home devices, guarding bridge rectifier and primary-side controller. IC Role / Device Role / Timing Role: Secondary overvoltage protector after MOV, absorbing residual energy and limiting let-through voltage to <35 V. Use Value: Withstands repeated 10/1000 μs surges up to 49 A, extending adapter lifetime in regions with unstable grid conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22CA | Same VBR range (20.9–23.1 V) but lower PPPM = 600 W; SMB package (smaller footprint, higher RθJA = 85 °C/W) | Lower surge energy handling; suitable only for Class 2 IEC 61000-4-5 (1 kV/0.5 kA) vs. 1.5SMC22CAHE3/57T's Class 4 (4 kV/2 kA) capability | Select SMBJ22CA where board space is constrained and surge threat level is moderate; verify thermal margin with RθJA derating. |
| 1.5KE22CA | Through-hole DO-15 package; identical electrical specs (VBR, VC, PPPM) but incompatible with SMT assembly and higher profile | Not suitable for automated production or low-profile designs; requires wave soldering or hand assembly | Choose 1.5KE22CA only for legacy through-hole systems or prototyping where SMT infrastructure is unavailable. |
Compared with SMBJ22CA and 1.5KE22CA, the 1.5SMC22CAHE3/57T uniquely combines AEC-Q101 qualification, 1500 W surge rating, and SMC surface-mount compatibility-enabling automotive-grade reliability in high-volume SMT manufacturing without layout or process compromise.
Availability
1.5SMC22CAHE3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter input stages requiring stable component supply, AEC-Q101 compliance, and repeatable 1500 W surge immunity.
Supply support for 1.5SMC22CAHE3/57T 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series is engineered for high-power transient suppression in harsh environments-targeting automotive, industrial, and telecom applications where robustness against lightning, ESD, and inductive switching is mission-critical.
FAQ
What does the "CA" suffix indicate in 1.5SMC22CAHE3/57T?
The "CA" suffix in 1.5SMC22CAHE3/57T denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression for both positive and negative polarity surges. Unlike unidirectional variants (e.g., 1.5SMC22A), the 1.5SMC22CAHE3/57T has no cathode band marking and functions identically regardless of orientation in the circuit-critical for protecting AC-coupled or floating signal paths.
Is 1.5SMC22CAHE3/57T suitable for automotive applications?
Yes, 1.5SMC22CAHE3/57T is explicitly AEC-Q101 qualified (as indicated by the "HE3" suffix), validating its reliability for automotive use cases including engine control units, ADAS sensor interfaces, and infotainment systems. Its –65 °C to +150 °C operating range, MSL Level 1 reflow compatibility, and 1500 W surge rating meet stringent OEM requirements for under-hood and cabin-mounted electronics.
What is the maximum clamping voltage of 1.5SMC22CAHE3/57T under surge conditions?
The maximum clamping voltage (VC) of 1.5SMC22CAHE3/57T is 30.6 V when subjected to its rated peak pulse current of 49 A with a 10/1000 μs waveform. This value represents the highest voltage that will appear across the protected circuit during a worst-case transient event, ensuring downstream 3.3 V or 5 V ICs remain within safe operating limits.
How does the SMC (DO-214AB) package of 1.5SMC22CAHE3/57T compare to SMB or SOD-123 packages?
The SMC (DO-214AB) package of 1.5SMC22CAHE3/57T offers significantly higher power handling than SMB (600 W) or SOD-123 (<100 W) alternatives, supporting 1500 W peak pulse power due to its larger copper pad area and lower thermal resistance (RθJA = 75 °C/W). Its 7.75 mm × 6.22 mm footprint balances PCB real estate with robust surge capability-unlike smaller packages that require derating or parallel devices.
What is the reverse stand-off voltage (VWM) of 1.5SMC22CAHE3/57T, and why does it matter?
The reverse stand-off voltage (VWM) of 1.5SMC22CAHE3/57T is 18.8 V-the maximum continuous working voltage the device tolerates without exceeding 1 μA leakage current. This parameter ensures the TVS remains inactive during normal operation while providing a safe margin below its 20.9–23.1 V breakdown range, preventing false triggering on nominal 18 V or 24 V rails.
1.5SMC22CAHE3/57T 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):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 49A
- 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)
1.5SMC22CAHE3/57T FAQ
1.How can I place an order for 1.5SMC22CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC22CAHE3/57T 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 1.5SMC22CAHE3/57T reliable?
The price and inventory of 1.5SMC22CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC22CAHE3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC22CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC22CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC22CAHE3/57T?
1.5SMC22CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC22CAHE3/57T 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 1.5SMC22CAHE3/57T?
For technical support, including 1.5SMC22CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC22CAHE3/57T requirements.
6.How does Aetrix verify that 1.5SMC22CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC22CAHE3/57T 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 1.5SMC22CAHE3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC22CAHE3/57T?
All 1.5SMC22CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC22CAHE3/57T, 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 1.5SMC22CAHE3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC22CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC22CAHE3/57T Tags
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