My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCJ22CAHE3/57T
- Part No.:
- SMCJ22CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ22CAHE3/57T.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,669
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ22CAHE3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 1500 W peak pulse power rating, 24.4 V to 26.9 V breakdown voltage (VBR) at 1 mA test current, and 35.5 V maximum clamping voltage (VC) at 42.3 A peak pulse current. It protects sensitive signal lines and power rails in automotive sensor interfaces and industrial I/O modules.
For engineers reviewing the SMCJ22CAHE3/57T datasheet, SMCJ22CAHE3/57T pinout, SMCJ22CAHE3/57T application, or SMCJ22CAHE3/57T equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, 1500 W surge capability, low incremental surge resistance, and compatibility with automated SMT placement on 8 mm × 8 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector: during transients exceeding its standoff voltage (VWM = 22 V), it avalanches rapidly (<1 ps response) to divert surge current away from downstream circuitry. Its bidirectional symmetry ensures identical clamping in both polarities-critical for AC-coupled or floating signal paths.
Thermally, it features RθJA = 75 °C/W (on recommended pad layout) and RθJL = 15 °C/W, enabling reliable operation up to TJ = 150 °C. The glass-passivated junction and matte tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC RMS working range. |
| VBR min/max | 24.4 V / 26.9 V at 1 mA - Confirmed avalanche onset window; ensures predictable turn-on across production lot. |
| VC @ IPPM | 35.5 V at 42.3 A - Clamped voltage under 10/1000 μs surge; limits stress on protected ICs (e.g., CAN transceivers, ADC inputs). |
| PPPM | 1500 W - Peak pulse power handling per 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 (4 kV) compliance when properly laid out. |
| IPPM | 42.3 A - Maximum non-repetitive surge current; determines minimum trace width and PCB copper area needed for thermal dissipation. |
| TJ max | 150 °C - Maximum junction temperature; enables use in under-hood automotive environments without derating below 125 °C ambient. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; required for ECUs and ADAS sensors. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H); cathode band absent (bidirectional symmetry).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge current entry (negative polarity) | Connects to line being protected; forms symmetrical clamping path with Cathode during negative transients. |
| Cathode | Surge current entry (positive polarity) | Connects to line being protected; forms symmetrical clamping path with Anode during positive transients. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions-enables single-device protection of AC signals, differential buses, or ungrounded systems. |
| AEC-Q101 qualification | Validated for automotive electronics per stress test standards; eliminates need for additional qualification by Tier 1 suppliers. |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 combination wave surges up to 4 kV without degradation when mounted on 8 mm × 8 mm copper pads. |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage exposure to protected devices-critical for 3.3 V or 5 V logic interfacing with 22 V supply rails. |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles; no moisture sensitivity handling required prior to assembly. |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting LIN/CAN bus nodes and MEMS pressure sensor outputs against load dump and ISO 7637-2 pulses in engine control units. IC Role / Device Role / Timing Role: Shunt TVS diode placed directly at connector entry point to clamp transients before reaching transceiver or ADC front-end. Use Value: Prevents latch-up or gate oxide damage in 3.3 V microcontrollers and analog signal conditioners during 12 V system surges. | Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers exposed to field wiring induced surges. IC Role / Device Role / Timing Role: Bidirectional clamping element across input terminals to absorb ±1 kV fast transients per IEC 61000-4-4. Use Value: Maintains signal integrity and prevents false triggering during factory floor ESD events without requiring series impedance. |
| Telecom Line Card Protection | Consumer USB-C Port ESD |
Use Scenario: Secondary surge suppression on Ethernet PHY side of PoE-powered switches after primary gas discharge tube. IC Role / Device Role / Timing Role: Fast-response secondary clamp limiting residual voltage to <36 V during lightning-induced surges. Use Value: Enables use of cost-effective 40 V-rated Ethernet magnetics and PHYs while meeting GR-1089-CORE Level 3 requirements. | Use Scenario: Board-level ESD protection for USB-C CC and VBUS lines in portable audio devices subjected to ±15 kV contact discharge. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) bidirectional TVS placed adjacent to connector to suppress sub-nanosecond ESD events. Use Value: Passes IEC 61000-4-2 Level 4 without degrading 10 Gbps USB 3.2 Gen 2 signal integrity due to tight VC control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22CAHE3/A | Lower PPPM (400 W), smaller SMA package (DO-214AC), same VWM/VBR range | Not suitable for IEC 61000-4-5 Level 4; limited to board-level ESD or low-energy switching noise | Select when space-constrained layouts preclude SMC footprint and surge energy is ≤200 W. |
| SMCJ22AHE3/57T | Unidirectional version; includes cathode band marking; otherwise identical ratings and package | Requires polarity-aware routing; unsuitable for AC or floating differential lines | Choose only for DC-biased rails where ground-referenced clamping suffices and polarity is fixed. |
Compared with SMAJ22CAHE3/A and SMCJ22AHE3/57T, the SMCJ22CAHE3/57T uniquely delivers 1500 W bidirectional clamping in automotive-qualified SMC packaging-making it the sole option for robust, polarity-agnostic surge protection in harsh environment ECUs and industrial controllers.
Availability
SMCJ22CAHE3/57T is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O conditioning, telecom line card surge suppression, and consumer USB-C port hardening requiring stable component supply across multi-year production cycles.
Supply support for SMCJ22CAHE3/57T 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, power efficiency, and automotive-grade qualification.
The SMCJ series was engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure-prioritizing AEC-Q101 compliance, low clamping ratios, and robust surge handling in compact surface-mount packages.
FAQ
What does the "CA" suffix indicate in SMCJ22CAHE3/57T?
The "CA" suffix in SMCJ22CAHE3/57T denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression for both positive and negative polarity surges. Unlike unidirectional variants (e.g., SMCJ22AHE3/57T), it has no cathode marking and exhibits identical electrical characteristics-including VBR, VC, and IPPM-in either direction. This makes SMCJ22CAHE3/57T ideal for protecting AC-coupled signals, differential buses, or floating circuits where polarity cannot be assumed.
Is SMCJ22CAHE3/57T qualified for automotive applications?
Yes, SMCJ22CAHE3/57T is AEC-Q101 qualified, as confirmed by Vishay's documentation and ordering code suffix "HE3". This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD-ensuring reliability in automotive environments such as engine control units, ADAS sensors, and body electronics. The device operates continuously from −55 °C to +150 °C junction temperature and meets MSL Level 1 for lead-free reflow compatibility.
What is the recommended PCB layout for optimal surge performance of SMCJ22CAHE3/57T?
Vishay specifies mounting SMCJ22CAHE3/57T on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve rated 1500 W peak pulse power. Traces to the device must be short and wide (≥20 mil width) to minimize inductance, and ground planes should be solid beneath the pads. Avoid thermal relief spokes; use direct copper connections to maximize heat dissipation and maintain clamping voltage stability during 10/1000 μs transients. This layout is mandatory to realize the full IPPM = 42.3 A rating.
How does the clamping voltage VC = 35.5 V of SMCJ22CAHE3/57T protect downstream 3.3 V or 5 V ICs?
Although SMCJ22CAHE3/57T clamps at 35.5 V, its effectiveness relies on series impedance (e.g., current-limiting resistor or ferrite bead) upstream that limits peak current into the protected IC. When combined with proper layout, this limits the voltage drop across the series element during surge, ensuring the IC sees only a fraction of VC. For example, a 10 Ω resistor limits 42.3 A surge current to 423 V drop-but with typical PCB trace inductance and external filtering, actual IC pin voltage remains within safe margins. Always verify with SPICE simulation using the device's published SPICE model.
Can SMCJ22CAHE3/57T replace older SMCJ22A variants in existing designs?
No-SMCJ22CAHE3/57T is not a drop-in replacement for unidirectional SMCJ22AHE3/57T because it lacks polarity marking and behaves identically in both directions. Swapping requires verifying that the circuit does not rely on DC bias or unidirectional conduction (e.g., in DC power rail protection). If the original design uses the cathode band for orientation or depends on forward conduction, substituting SMCJ22CAHE3/57T may cause malfunction. Always review schematic topology and perform functional validation before replacement.
SMCJ22CAHE3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 42.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ22CAHE3/57T FAQ
1.How can I place an order for SMCJ22CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ22CAHE3/57T 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 SMCJ22CAHE3/57T reliable?
The price and inventory of SMCJ22CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ22CAHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ22CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ22CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ22CAHE3/57T?
SMCJ22CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ22CAHE3/57T 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 SMCJ22CAHE3/57T?
For technical support, including SMCJ22CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ22CAHE3/57T requirements.
6.How does Aetrix verify that SMCJ22CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ22CAHE3/57T 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 SMCJ22CAHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ22CAHE3/57T?
All SMCJ22CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ22CAHE3/57T, 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 SMCJ22CAHE3/57T part is unused and in its original packaging.
Return procedure for SMCJ22CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ22CAHE3/57T Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
