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Vishay General Semiconductor - Diodes Division P6SMB22CAHM3/I
- Part No.:
- P6SMB22CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB22CAHM3/I.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,622
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Product details
Overview
P6SMB22CAHM3/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 18.8 V stand-off voltage (VWM), 20.9–23.1 V breakdown voltage (VBR) at 1 mA, 30.6 V maximum clamping voltage (VC) at 19.6 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - deployed on power rails and signal lines in automotive sensor interfaces.
For engineers reviewing the P6SMB22CAHM3/I datasheet, P6SMB22CAHM3/I pinout, P6SMB22CAHM3/I application, or P6SMB22CAHM3/I equivalent, this device delivers AEC-Q101 qualified surge immunity for industrial control I/O, automotive body electronics, and telecom line protection where bidirectional clamping, low leakage (<1 μA), and MSL Level 1 reflow compatibility are required.
Technical Context
The P6SMB22CAHM3/I operates as a symmetrical avalanche diode, conducting equally in both polarities above its breakdown threshold to clamp transient energy into ground or rail. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling fast response (<1 ns) to ESD and lightning-induced surges.
Thermally, it sustains 150 °C maximum junction temperature with RθJA = 100 °C/W and RθJL = 20 °C/W, and is rated for repetitive 0.01% duty cycle pulses. The HM3 suffix confirms halogen-free, RoHS-compliant construction with matte tin-plated leads meeting J-STD-002 solderability and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 18.8 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (Breakdown) | 20.9–23.1 V at 1 mA - Guaranteed avalanche initiation range; ensures predictable turn-on during transients |
| VC (Clamping) | 30.6 V at 19.6 A - Peak voltage seen by protected circuit during 10/1000 μs surge; limits stress on downstream ICs |
| PPPM | 600 W - Peak pulse power handling with 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 surge immunity |
| IPPM | 19.6 A - Corresponding peak pulse current at VC; determines minimum trace width and PCB layout clearance |
| Leakage (ID) | <1 μA at VWM - Negligible standby power loss; critical for battery-powered sensor nodes |
| TJ max | 150 °C - Enables operation in under-hood automotive environments without derating at 85 °C ambient |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with 0.220" × 0.130" footprint and 0.086" height; meets UL 94 V-0 flammability; terminals are matte tin-plated for lead-free reflow (260 °C peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node in bidirectional configuration | No polarity marking - symmetric structure allows either end to connect to line or ground; no cathode band |
| Cathode | Current exit terminal in forward bias; common node in bidirectional configuration | Identical electrical role to Anode; bidirectional conduction means both terminals function identically during surge events |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., CAN bus, RS-485) without polarity concerns |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including body control modules and ADAS sensor interfaces per stress test requirements |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Combination Wave (1.2/50 μs voltage + 8/20 μs current) up to Level 4 (4 kV/2 kA) |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly without moisture sensitivity handling or baking |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC J-STD-20; suitable for green manufacturing and export compliance |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protecting 12 V supply and LIN bus lines from load dump and inductive switching spikes in door module ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed between power rail and ground to clamp transients before they reach MCU power pins and LIN transceiver I/O. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic circuits during 100 V/50 ms load dump events per ISO 7637-2 Pulse 5a. |
Use Scenario: Shielding 24 V digital input channels from field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Primary front-end protection element across input terminals, shunting surge current away from optocoupler input diodes and series resistors. Use Value: Maintains functional safety integrity by limiting input voltage to ≤30.6 V during 1 kV/500 A surge tests (IEC 61000-4-5). |
| Telecom Base Station RS-485 Interface | Consumer Appliance Motor Drive Feedback Line |
Use Scenario: Guarding half-duplex RS-485 transceivers against ESD and lightning-induced common-mode transients on long cable runs. IC Role / Device Role / Timing Role: Common-mode TVS connected between A/B differential pair and chassis ground to suppress asymmetric surges without distorting signal integrity. Use Value: Ensures >15 kV HBM ESD immunity and prevents false data corruption during 4 kV contact discharge per IEC 61000-4-2. |
Use Scenario: Safeguarding hall-effect sensor outputs feeding motor commutation logic in washing machine inverter drives. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp on analog feedback path to suppress MOSFET switching noise and back-EMF spikes. Use Value: Eliminates signal glitches that cause miscommutation, preserving torque accuracy and reducing audible motor noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22CA | Same VWM/VBR/VC specs but 400 W PPPM; SMA package (smaller footprint, higher RθJA = 140 °C/W) | Limited to lower-energy transients; less suitable for ISO 7637-2 Pulse 5a or IEC 61000-4-5 Level 4 | Select when board space is constrained and surge threat level is ≤2 kV/1 kA. |
| 1.5KE22CA | Same electrical ratings but through-hole DO-201 package; 600 W PPPM, higher IPPM (27.3 A), larger thermal mass | Not SMT-compatible; requires wave solder or hand-solder; better for prototyping or high-reliability legacy designs | Choose for manual assembly, high-volume through-hole production, or where thermal cycling reliability outweighs SMT density. |
Compared with SMAJ22CA and 1.5KE22CA, the P6SMB22CAHM3/I uniquely balances 600 W surge capability, AEC-Q101 qualification, SMB footprint compactness, and MSL Level 1 process compatibility - making it optimal for high-volume automotive and industrial SMT production where reliability, manufacturability, and standardized testing alignment are jointly critical.
Availability
P6SMB22CAHM3/I is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O protection, and telecom interface hardening requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P6SMB22CAHM3/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 is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, precision, and application-specific qualification.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for AEC-Q101 compliance, robust surge handling, and seamless integration into automated SMT lines.
FAQ
What is the clamping voltage of P6SMB22CAHM3/I at its rated peak pulse current?
The P6SMB22CAHM3/I has a maximum clamping voltage (VC) of 30.6 V at 19.6 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is guaranteed across temperature and lifetime, ensuring downstream components like microcontrollers or transceivers remain within safe operating voltage limits during surge events. The P6SMB22CAHM3/I achieves this via low dynamic impedance and tightly controlled avalanche characteristics.
Is P6SMB22CAHM3/I suitable for automotive applications?
Yes, the P6SMB22CAHM3/I is AEC-Q101 qualified, as confirmed by the "HM3" suffix denoting halogen-free, RoHS-compliant, and automotive-grade construction. It meets stress test requirements for temperature cycling, humidity, mechanical shock, and surge immunity relevant to body electronics, infotainment, and sensor modules. The P6SMB22CAHM3/I is explicitly listed in Vishay's AEC-Q101 qualified product matrix for the P6SMB family.
How does the bidirectional design of P6SMB22CAHM3/I affect its PCB layout?
The P6SMB22CAHM3/I has no polarity marking and identical electrical behavior in both directions, simplifying PCB layout by eliminating orientation constraints. Engineers can place it symmetrically across differential lines (e.g., CAN H/L) or between any two nodes needing mutual overvoltage protection. Its SMB (DO-214AA) footprint requires 0.220" × 0.130" pad area per terminal, with no cathode band alignment needed - reducing placement errors and assembly time for the P6SMB22CAHM3/I.
What is the maximum operating temperature for P6SMB22CAHM3/I?
The P6SMB22CAHM3/I supports a maximum junction temperature (TJ) of 150 °C and an operating ambient range of -65 °C to +150 °C. Its thermal resistance values - RθJA = 100 °C/W and RθJL = 20 °C/W - allow reliable operation at full 600 W surge rating up to +85 °C ambient when mounted on recommended 0.2" × 0.2" copper pads. Derating begins above 25 °C per Figure 2 in the P6SMB22CAHM3/I datasheet.
Does P6SMB22CAHM3/I meet lead-free reflow standards?
Yes, the P6SMB22CAHM3/I is qualified for lead-free reflow with a maximum peak temperature of 260 °C, complying with J-STD-020 MSL Level 1. Its matte tin-plated terminals meet J-STD-002 solderability requirements, and the molding compound is halogen-free and RoHS-compliant. No pre-baking is required prior to reflow, streamlining high-volume SMT production for the P6SMB22CAHM3/I.
P6SMB22CAHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, 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):
- 19.6A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB22CAHM3/I FAQ
1.How can I place an order for P6SMB22CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB22CAHM3/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 P6SMB22CAHM3/I reliable?
The price and inventory of P6SMB22CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB22CAHM3/I is usually 5 days.
3.What payment methods are accepted for P6SMB22CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB22CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB22CAHM3/I?
P6SMB22CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB22CAHM3/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 P6SMB22CAHM3/I?
For technical support, including P6SMB22CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB22CAHM3/I requirements.
6.How does Aetrix verify that P6SMB22CAHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB22CAHM3/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 P6SMB22CAHM3/I meets industry standards.
7.What is the process for return or replacement of P6SMB22CAHM3/I?
All P6SMB22CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB22CAHM3/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 P6SMB22CAHM3/I part is unused and in its original packaging.
Return procedure for P6SMB22CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB22CAHM3/I Tags
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