My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5SMC22CA-E3/57T
- Part No.:
- 1.5SMC22CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC22CA-E3/57T.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:763
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC22CA-E3/57T 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 22 V standoff voltage (VWM), 24.4–26.9 V breakdown voltage (VBR) at 1 mA, 33.2 V clamping voltage (VC) at 49 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 μs waveform.
For engineers reviewing the 1.5SMC22CA-E3/57T datasheet, 1.5SMC22CA-E3/57T pinout, 1.5SMC22CA-E3/57T application, or 1.5SMC22CA-E3/57T equivalent, this device serves as a critical front-end protection component against ESD, lightning-induced surges, and inductive switching transients in automotive, industrial, and telecom systems requiring high-reliability unidirectional or bidirectional clamping.
Technical Context
The 1.5SMC22CA-E3/57T operates as a bidirectional avalanche diode, symmetrically clamping voltage transients in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while its SMC (DO-214AB) package supports automated placement and meets MSL level 1 per J-STD-020.
It delivers 1500 W peak pulse power handling under standardized 10/1000 μs waveform conditions, with thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-leads), enabling reliable operation up to 150 °C junction temperature and supporting repetitive surge events at 0.01% duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 22 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working range. |
| VBR (Breakdown Voltage) | 24.4–26.9 V at 1 mA - Confirmed avalanche initiation threshold; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 33.2 V at 49 A IPPM - Maximum voltage seen by protected circuit during 1500 W transient; limits stress on downstream ICs. |
| PPPM (Peak Pulse Power) | 1500 W - Surge energy absorption capacity under 10/1000 μs waveform; qualifies for IEC 61000-4-5 Level 4 compliance. |
| ID (Reverse Leakage) | <1.0 μA at 22 V - Minimal standby current; preserves signal integrity and battery life in low-power systems. |
| TJ max. | 150 °C - Maximum junction temperature rating; enables use in under-hood automotive and industrial environments. |
| Package | SMC (DO-214AB) - Surface-mount outline with 8.0 mm × 8.0 mm copper pad footprint; optimized for thermal dissipation and reflow compatibility. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL level 1, lead-free (RoHS-compliant) per E3 suffix.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (bidirectional) | Transient conduction path | No polarity marking; symmetrical terminals conduct equally in both directions during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines, differential buses, or floating signal pairs without external polarity management. |
| 1500 W peak pulse power | Withstands severe lightning-induced surges (IEC 61000-4-5) and inductive load switching spikes in industrial controls. |
| Glass-passivated junction | Ensures long-term stability of VBR and low parametric drift across temperature and lifetime cycling. |
| MSL Level 1 rating | Supports standard reflow profiles without moisture-related popcorning; eliminates pre-bake requirement for SMT assembly. |
| AEC-Q101 qualification option | HE3/HM3 variants available for automotive applications; this E3/57T variant is commercial-grade but shares identical die and package design. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector interface to clamp ±22 V transients before they reach signal conditioning amplifiers or microcontroller ADC inputs. Use Value: Maintains 22 V VWM margin below typical 24 V rail while limiting clamped voltage to 33.2 V, preventing latch-up or damage to 3.3 V/5 V logic interfaces. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Front-end transient suppressor on dry-contact or optocoupler input channels, absorbing 1500 W pulses without degradation. Use Value: Enables >100,000 surge cycles per IEC 61000-4-5 due to low incremental surge resistance and stable clamping, reducing field failure rates. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Secondary-side surge protection on Ethernet PHY power rails or RS-485 termination networks exposed to induced lightning energy. IC Role / Device Role / Timing Role: Bidirectional clamping element across VDD/GND or differential pair, responding in <1 ps to limit transient propagation. Use Value: 33.2 V VC ensures protected PHY ICs (e.g., MAX13086) remain within absolute maximum ratings during 1 kV/0.5 kΩ combo wave testing. |
Use Scenario: Input-stage overvoltage suppression in wall adapters and USB-C PD chargers subjected to mains-borne surges and capacitor discharge events. IC Role / Device Role / Timing Role: Primary clamping device after bridge rectifier and before bulk capacitor, shunting energy away from primary-side controllers. Use Value: 1500 W rating and 22 V VWM allow direct integration with 24 V output designs, eliminating need for cascaded protection stages. |
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 VWM/VBR/VC specs but lower PPPM (600 W); SMB package (smaller thermal mass, higher RθJA). | Limited to lower-energy transients (e.g., ESD-only); unsuitable for IEC 61000-4-5 Level 3+ or industrial lightning surges. | Select when board space is constrained and surge threat level is ≤500 W; verify thermal derating at 75 °C ambient. |
| 1.5KE22CA | Through-hole TO-204AA (DO-41); identical electrical specs but larger footprint and manual assembly requirement. | Used where legacy through-hole manufacturing or higher mechanical robustness is prioritized over SMT automation. | Choose for prototyping, low-volume industrial repairs, or mixed-technology boards where SMT reflow is unavailable. |
Compared with SMBJ22CA and 1.5KE22CA, the 1.5SMC22CA-E3/57T uniquely balances 1500 W surge capability, SMC's automated assembly readiness, and bidirectional symmetry-making it optimal for high-volume automotive and industrial SMT production where both performance and manufacturability are critical.
Availability
1.5SMC22CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter designs requiring stable component supply, RoHS compliance, and consistent surge performance across production lots.
Supply support for 1.5SMC22CA-E3/57T 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, precision, and application-specific optimization.
The 1.5SMC Series was engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where compact size, repeatable clamping, and AEC-Q101 qualification readiness are essential design requirements.
FAQ
What is the clamping voltage of the 1.5SMC22CA-E3/57T under maximum surge conditions?
The 1.5SMC22CA-E3/57T has a maximum clamping voltage (VC) of 33.2 V at 49 A peak pulse current (IPPM), measured using the standardized 10/1000 μs waveform. This value represents the highest voltage imposed on the protected circuit during a full 1500 W transient event, ensuring downstream components like microcontrollers or transceivers remain within safe operating limits. The 1.5SMC22CA-E3/57T maintains this clamping performance across its specified temperature range and lifetime.
Is the 1.5SMC22CA-E3/57T suitable for automotive applications?
The 1.5SMC22CA-E3/57T is RoHS-compliant and built on the same die and package as AEC-Q101 qualified variants (e.g., 1.5SMC22CAHE3_A), though this specific E3/57T ordering code is commercial-grade. Its 150 °C TJ max., low leakage (<1.0 μA), and robust 1500 W surge rating make it widely deployed in non-safety-critical automotive subsystems such as body control modules and infotainment power rails. For ASIL-B/C systems, engineers should specify the HE3 or HM3 suffix variants explicitly qualified to AEC-Q101.
How does the bidirectional design of the 1.5SMC22CA-E3/57T affect PCB layout?
The 1.5SMC22CA-E3/57T has no polarity marking and functions identically in both directions, simplifying PCB layout by eliminating orientation constraints during placement. Unlike unidirectional TVS diodes, it requires no cathode band alignment-reducing assembly errors and enabling flexible routing for AC-coupled or floating signal paths. Its SMC (DO-214AB) footprint uses symmetric 8.0 mm × 8.0 mm copper pads per terminal, and the absence of polarity allows reuse across differential pairs or dual-rail protections without redesign.
What is the thermal resistance of the 1.5SMC22CA-E3/57T, and how does it impact power dissipation?
The 1.5SMC22CA-E3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-leads resistance (RθJL) of 15 °C/W when mounted on recommended 0.31" × 0.31" copper pads. This means under continuous 6.5 W power dissipation (PD), the junction temperature rises ~488 °C above ambient-so the device relies on short-duration pulse operation rather than steady-state dissipation. Its design targets transient suppression, not DC power handling; sustained power must stay well below PD to avoid thermal runaway.
Does the 1.5SMC22CA-E3/57T meet industry surge immunity standards?
Yes-the 1.5SMC22CA-E3/57T's 1500 W peak pulse power rating with a 10/1000 μs waveform aligns with key surge immunity standards including IEC 61000-4-5 (Level 4: 4 kV line-earth, 2 kV line-line) and ISO 7637-2 (Pulse 1, 2a, 3a/b). Its fast response time (<1 ps), low clamping voltage (33.2 V), and stable VBR ensure compliant protection when used with appropriate PCB layout (short traces, ground plane, proper pad sizing). System-level validation remains required, but the 1.5SMC22CA-E3/57T provides the foundational clamping performance needed to pass these tests.
1.5SMC22CA-E3/57T 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:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC22CA-E3/57T FAQ
1.How can I place an order for 1.5SMC22CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC22CA-E3/57T 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 1.5SMC22CA-E3/57T reliable?
The price and inventory of 1.5SMC22CA-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC22CA-E3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC22CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC22CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC22CA-E3/57T?
1.5SMC22CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC22CA-E3/57T 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 1.5SMC22CA-E3/57T?
For technical support, including 1.5SMC22CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC22CA-E3/57T requirements.
6.How does Aetrix verify that 1.5SMC22CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC22CA-E3/57T 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 1.5SMC22CA-E3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC22CA-E3/57T?
All 1.5SMC22CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC22CA-E3/57T, 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 1.5SMC22CA-E3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC22CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC22CA-E3/57T 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 …
