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Vishay General Semiconductor - Diodes Division P6SMB22CAHM3/H
- Part No.:
- P6SMB22CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB22CAHM3/H.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,458
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Product details
Overview
P6SMB22CAHM3/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 22 V standoff voltage (VWM), 24.5 V minimum breakdown voltage (VBR), 33.2 V maximum clamping voltage at 19.6 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the P6SMB22CAHM3/H datasheet, P6SMB22CAHM3/H pinout, P6SMB22CAHM3/H application, or P6SMB22CAHM3/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, and thermal resistance of 100 °C/W junction-to-ambient under standard pad layout.
Technical Context
This device operates as a voltage-clamping protector with symmetrical reverse/forward conduction behavior due to its bidirectional construction. It responds within <1 ns to transient overvoltages and maintains low incremental surge resistance to limit clamping voltage rise under high-current surges.
Designed for repetitive transient suppression, it supports 0.01 % duty cycle at rated peak power and derates linearly above 25 °C ambient per Fig. 2. Its glass-passivated junction ensures stable leakage performance and long-term reliability in harsh environments including automotive under-hood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 22 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR (Breakdown Voltage) | 24.5 V min / 26.7 V max at 1 mA - Voltage at which device enters avalanche conduction |
| VC (Clamping Voltage) | 33.2 V max at 19.6 A IPPM - Peak voltage seen by protected circuit during 10/1000 μs surge |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy absorption capability under standardized waveform |
| ID (Reverse Leakage) | 1.0 μA max at 22 V - Low leakage preserves signal integrity in high-impedance circuits |
| TJ max | +150 °C - Enables operation in under-hood automotive and industrial environments |
| Package | SMB (DO-214AA) - Surface-mount footprint compatible with automated assembly and meets UL 94 V-0 |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; polarity-unmarked for bidirectional operation; dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; symmetric with cathode in bidirectional mode | Enables clamping in both polarities - no dedicated anode/cathode marking required |
| Cathode | Current exit terminal in forward bias; functionally identical to anode for bidirectional use | Terminal pair forms symmetrical voltage clamp - no polarity orientation needed during placement |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock |
| Halogen-free & RoHS-compliant | Meets JEDEC J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance requirements |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) without degradation |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage stress on downstream ICs such as CAN transceivers or ADC front-ends |
| Fast response time & low Rdyn | Sub-nanosecond turn-on and <0.5 Ω dynamic resistance ensure tight voltage control during fast transients |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting LIN/CAN bus nodes and temperature/pressure sensors from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pairs or supply rails upstream of interface ICs. Use Value: Maintains signal fidelity under ±22 V transients while meeting AEC-Q101 requirements for 15-year automotive service life. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and 0–10 V analog channels in programmable logic controllers against field wiring surges. IC Role / Device Role / Timing Role: Primary transient suppressor mounted directly at connector entry point before signal conditioning circuitry. Use Value: Limits clamped voltage to ≤33.2 V, preventing damage to precision op-amps and SAR ADCs operating at 5 V or 3.3 V rails. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding Ethernet PHYs and DSL line drivers from lightning-induced surges on copper telecom lines. IC Role / Device Role / Timing Role: Secondary-level TVS used in conjunction with gas discharge tubes (GDTs) for coordinated multi-stage protection. Use Value: Fast response complements slower primary protectors, reducing let-through voltage to sub-35 V levels critical for 2.5 V/3.3 V PHY ICs. |
Use Scenario: Suppressing inductive kickback from brushed DC motors and solenoids in washing machines and HVAC controls. IC Role / Device Role / Timing Role: Clamp placed across motor terminals or MOSFET drain-source to absorb flyback energy. Use Value: Handles 100 A non-repetitive surge (IFSM) and dissipates 600 W pulses without thermal runaway in intermittent duty cycles. |
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 lower PPPM (400 W); SMA package (smaller footprint, higher RθJA) | Limited to lower-energy transients; not AEC-Q101 qualified | Select when board space is constrained and automotive qualification is unnecessary |
| 1.5KE22CA | Higher PPPM (1500 W), axial-leaded DO-201 package; larger size, manual assembly only | Better suited for high-energy AC mains protection; incompatible with SMT production | Choose for legacy through-hole designs or where surge energy exceeds 600 W capability |
Compared with SMAJ22CA and 1.5KE22CA, P6SMB22CAHM3/H delivers optimal balance of AEC-Q101 compliance, 600 W surge handling, and SMB-compatible SMT manufacturability - making it preferred for new automotive and industrial PCB designs requiring automated assembly and long-term supply stability.
Availability
P6SMB22CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, telecom line cards, and consumer appliance motor drives requiring stable component supply and full traceability.
Supply support for P6SMB22CAHM3/H 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 and application-specific performance.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for robustness under repetitive surge stress and extended temperature operation.
FAQ
What does the "CA" suffix indicate in P6SMB22CAHM3/H?
The "CA" suffix denotes a bidirectional configuration, meaning the P6SMB22CAHM3/H provides symmetrical clamping in both polarities - essential for protecting AC-coupled signals, differential buses like CAN or RS-485, and ungrounded power rails where polarity reversal may occur during transients.
Is P6SMB22CAHM3/H qualified for automotive applications?
Yes, P6SMB22CAHM3/H is AEC-Q101 qualified, as confirmed by the "HM3" suffix indicating halogen-free, RoHS-compliant construction with automotive-grade reliability testing. It meets requirements for temperature cycling, mechanical shock, and long-term stability in under-hood and cabin ECU environments.
What is the thermal resistance of P6SMB22CAHM3/H, and how does it affect layout?
P6SMB22CAHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe junction temperatures during repetitive surges, PCB layout must adhere to this pad size and avoid excessive trace length or isolation that increases thermal impedance.
How does P6SMB22CAHM3/H compare to unidirectional variants like P6SMB22AHM3/H?
P6SMB22CAHM3/H differs from P6SMB22AHM3/H solely in polarity: the "CA" version is bidirectional with identical VWM (22 V), VBR (24.5–26.7 V), and VC (33.2 V), while the "A" version is unidirectional and requires correct cathode orientation. Both share the same SMB package, AEC-Q101 qualification, and 600 W rating - choice depends on circuit symmetry requirements.
What is the maximum peak pulse current (IPPM) for P6SMB22CAHM3/H at its clamping voltage?
The maximum peak pulse current (IPPM) for P6SMB22CAHM3/H is 19.6 A when clamped to 33.2 V under a 10/1000 μs waveform. This value is derived from the 600 W peak pulse power rating divided by VC, and is validated per Figure 1 in the official Vishay datasheet 88370.
P6SMB22CAHM3/H 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/H FAQ
1.How can I place an order for P6SMB22CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB22CAHM3/H 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/H reliable?
The price and inventory of P6SMB22CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB22CAHM3/H is usually 5 days.
3.What payment methods are accepted for P6SMB22CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB22CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB22CAHM3/H?
P6SMB22CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB22CAHM3/H 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/H?
For technical support, including P6SMB22CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB22CAHM3/H requirements.
6.How does Aetrix verify that P6SMB22CAHM3/H is sourced from the original manufacturer or authorized distributors?
All P6SMB22CAHM3/H 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/H meets industry standards.
7.What is the process for return or replacement of P6SMB22CAHM3/H?
All P6SMB22CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB22CAHM3/H, 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/H part is unused and in its original packaging.
Return procedure for P6SMB22CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB22CAHM3/H Tags
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