My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMC5K22CA-M3/I
- Part No.:
- SMC5K22CA-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC5K22CA-M3/I.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,988
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMC5K22CA-M3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, designed for high-energy surge protection with 5000 W peak pulse power (10/1000 μs), 22 V stand-off voltage (VWM), and 35.5 V maximum clamping voltage (VC) at 141 A peak pulse current. It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial power electronics.
For engineers reviewing the SMC5K22CA-M3/I datasheet, SMC5K22CA-M3/I pinout, SMC5K22CA-M3/I application, or SMC5K22CA-M3/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 175 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT assembly using matte tin-plated leads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector triggered by transient overvoltage events. Its bidirectional structure enables symmetrical clamping above ±24.4 V breakdown (VBR min) and below ±26.9 V (VBR max), with 1.0 mA test current and ≤1.0 μA reverse leakage at 22 V stand-off.
It delivers 5000 W peak pulse power under 10/1000 μs waveform and sustains 830 A peak pulse current under 8/20 μs waveform, achieving clamping at 48.2 V - critical for safeguarding 24 V rail systems against lightning-induced surges and inductive switching transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 24 V nominal systems. |
| VBR (min/max) | 24.4 V / 26.9 V - Breakdown voltage range at 1.0 mA; ensures reliable turn-on before downstream component damage thresholds. |
| VC @ IPPM (10/1000 μs) | 35.5 V at 141 A - Clamping voltage during standard surge event; limits stress on protected 24 V logic or gate drivers. |
| PPPM (10/1000 μs) | 5000 W - Peak pulse power handling; supports robust protection in automotive load-dump and industrial motor-control environments. |
| TJ max | +175 °C - Maximum junction temperature; enables operation in under-hood or enclosed industrial enclosures without derating. |
| Polarity | Bidirectional - Provides symmetrical surge suppression on AC-coupled or floating signal/power lines without polarity constraints. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, M3 suffix indicating industrial grade and JESD 201 Class 2 whisker resistance. No cathode band - bidirectional configuration confirmed.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Both terminals function identically; connects across protected line and ground (or between differential lines) to clamp bidirectional surges. |
| Case (cathode side marking absent) | Thermal conduction path | Exposed metal pad provides thermal interface to PCB copper; RthJA = 90 °C/W enables effective heat dissipation during repetitive transients. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD immunity - suitable for engine control, body electronics, and ADAS power rails. |
| UL 497B recognized (E136766) | Meets safety standards for telecom and industrial signal-line protection, enabling use in certified end equipment without additional isolation. |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT reflow profiles without moisture sensitivity concerns - eliminates pre-bake requirement. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a), improving clamping precision for sensitive gate drivers. |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Lines |
|---|---|
Use Scenario: Protecting 24 V supply inputs to ECUs and junction boxes from load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed at board-level input filter stage to clamp surges before DC/DC converters and microcontrollers. Use Value: Withstands 5000 W pulses and clamps at 35.5 V, preventing overvoltage damage to downstream 36 V-rated regulators and CAN transceivers. | Use Scenario: Guarding analog outputs of pressure/temperature sensors in PLC I/O modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Bidirectional clamping element across sensor output and ground to suppress EFT bursts and lightning-induced common-mode noise. Use Value: 1.0 μA leakage at 22 V preserves signal integrity in 4–20 mA loops; 48.2 V clamping at 8/20 μs prevents ADC saturation during 1 kV/μs transients. |
| Telecom DC Power Feeds | Consumer Appliance Motor Control |
Use Scenario: Safeguarding -48 V DC power inputs in base station remote radio units against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary overvoltage protection device mounted at power entry point, upstream of hot-swap controllers and PMICs. Use Value: AEC-Q101 qualification and UL 497B recognition support compliance with GR-1089-CORE; 175 °C TJ max ensures reliability in sealed outdoor enclosures. | Use Scenario: Protecting half-bridge gate drivers in washing machine inverter drives from shoot-through-inducing voltage spikes during MOSFET switching. IC Role / Device Role / Timing Role: Localized TVS across high-side and low-side gate drive traces to suppress Miller-induced transients. Use Value: Fast response time and low clamping voltage (35.5 V) prevent false triggering of gate driver UVLO while maintaining <10 ns reaction latency. |
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-M3/5A | Lower PPPM (600 W vs. 5000 W); SMB (DO-214AA) package; same VWM/VBR range. | Suitable only for low-energy transients (e.g., ESD, EFT); not rated for load dump or lightning. | Select when space-constrained layouts require smaller footprint and surge energy is limited to <100 mJ. |
| SMC5K22A-M3/I | Unidirectional version; identical VWM, VBR, VC, and PPPM but asymmetric clamping (only suppresses positive transients). | Requires correct polarity placement; used where DC bias exists and negative transients are absent or handled separately. | Choose only if system topology guarantees unidirectional surge exposure and polarity alignment is assured. |
Compared with SMBJ22CA-M3/5A and SMC5K22A-M3/I, the SMC5K22CA-M3/I uniquely combines 5000 W surge capacity, bidirectional symmetry, and AEC-Q101 qualification - making it the sole option for high-reliability 24 V automotive and industrial power rail protection where polarity-agnostic clamping and multi-kW energy absorption are mandatory.
Availability
SMC5K22CA-M3/I is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interfaces, telecom DC feeds, and consumer appliance motor control requiring stable component supply and long-term production continuity.
Supply support for SMC5K22CA-M3/I 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability, high-power, and automotive-qualified components.
The SMC5KxxCA series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure modes must be mitigated without compromising signal integrity or thermal performance.
FAQ
What is the breakdown voltage range for SMC5K22CA-M3/I?
The SMC5K22CA-M3/I has a specified breakdown voltage (VBR) range of 24.4 V to 26.9 V at 1.0 mA test current, measured per ANSI/IEEE C62.35. This ensures consistent turn-on behavior across production lots and enables reliable coordination with downstream overvoltage protection thresholds in 24 V systems.
Is SMC5K22CA-M3/I suitable for automotive applications?
Yes, the SMC5K22CA-M3/I is AEC-Q101 qualified and rated for operation from –55 °C to +175 °C, making it suitable for under-hood and chassis-mounted automotive electronics. Its 5000 W peak pulse power and bidirectional clamping meet ISO 7637-2 Pulse 5a/b requirements for load dump protection in 12 V/24 V vehicle networks.
What does the "-M3/I" suffix indicate in SMC5K22CA-M3/I?
The "-M3" suffix denotes halogen-free, RoHS-compliant construction with matte tin-plated leads meeting J-STD-002 and JESD 22-B102 solderability, plus JESD 201 Class 2 whisker resistance. The "/I" indicates packaging in 13-inch diameter plastic tape and reel with 3500 units per reel - optimized for high-volume SMT assembly.
How does SMC5K22CA-M3/I compare to unidirectional TVS diodes with the same VWM?
Unlike unidirectional variants such as SMC5K22A-M3/I, the SMC5K22CA-M3/I provides symmetrical clamping for both positive and negative transients without polarity dependency. This eliminates orientation errors during placement and simplifies design for AC-coupled, floating, or bidirectionally referenced circuits like CAN bus stubs or RS-485 lines.
What is the maximum clamping voltage of SMC5K22CA-M3/I under an 8/20 μs surge?
Under an 8/20 μs surge waveform, the SMC5K22CA-M3/I clamps at a maximum of 48.2 V when subjected to 830 A peak pulse current. This value is specified in the Vishay datasheet (Document Number: 87024) and reflects worst-case clamping performance critical for protecting 36 V-rated downstream components.
SMC5K22CA-M3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 141A
- Power - Peak Pulse:
- 5000W (5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMC5K22CA-M3/I FAQ
1.How can I place an order for SMC5K22CA-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC5K22CA-M3/I 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 SMC5K22CA-M3/I reliable?
The price and inventory of SMC5K22CA-M3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC5K22CA-M3/I is usually 5 days.
3.What payment methods are accepted for SMC5K22CA-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K22CA-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC5K22CA-M3/I?
SMC5K22CA-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC5K22CA-M3/I 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 SMC5K22CA-M3/I?
For technical support, including SMC5K22CA-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K22CA-M3/I requirements.
6.How does Aetrix verify that SMC5K22CA-M3/I is sourced from the original manufacturer or authorized distributors?
All SMC5K22CA-M3/I 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 SMC5K22CA-M3/I meets industry standards.
7.What is the process for return or replacement of SMC5K22CA-M3/I?
All SMC5K22CA-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K22CA-M3/I, 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 SMC5K22CA-M3/I part is unused and in its original packaging.
Return procedure for SMC5K22CA-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC5K22CA-M3/I 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 …
