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Vishay General Semiconductor - Diodes Division P6SMB22CAHM3_A/H
- Part No.:
- P6SMB22CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB22CAHM3_A/H.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,826
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Product details
Overview
P6SMB22CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on signal or power lines. It features a 22 V standoff voltage (VWM), 24.4–26.9 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 capability with a 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the P6SMB22CAHM3_A/H datasheet, P6SMB22CAHM3_A/H pinout, P6SMB22CAHM3_A/H application, or P6SMB22CAHM3_A/H equivalent, this device is evaluated for ESD and surge protection in bidirectional signal paths where low clamping voltage, fast response time, and AEC-Q101 qualification are required.
Technical Context
The P6SMB22CAHM3_A/H operates as a symmetrical avalanche diode, conducting equally in both directions above its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5 %) and low leakage (<1 μA at 18.8 V), while its SMB (DO-214AA) package supports automated placement and meets MSL level 1 reflow standards up to 260 °C.
It delivers 600 W transient power handling under standardized 10/1000 μs pulses at 0.01 % duty cycle, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead). The device is halogen-free, RoHS-compliant, and qualified to AEC-Q101 for automotive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 18.8 V - maximum continuous reverse voltage before significant conduction begins; defines operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 24.4–26.9 V at 1 mA - precise avalanche onset range ensuring predictable turn-on during transients |
| VC (Clamping Voltage) | 30.6 V at 19.6 A IPPM - limits voltage seen by protected circuitry during worst-case 600 W surge |
| PPPM (Peak Pulse Power) | 600 W - energy-handling capacity under standard 10/1000 μs waveform, critical for IEC 61000-4-5 compliance |
| ID (Reverse Leakage) | <1 μA at 18.8 V - minimal standby power loss and signal integrity impact in high-impedance circuits |
| TJ max. | 150 °C - enables operation in under-hood automotive environments and industrial enclosures without derating |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 5.59 mm × 3.94 mm footprint and 2.20 mm height |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking; terminals are matte tin-plated for J-STD-002 solderability and JESD22-B102 whisker resistance (Class 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Identical electrical behavior in both directions; no cathode band marking - enables flexible PCB layout in AC-coupled or differential lines |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Halogen-free & RoHS-compliant | Meets global environmental regulations without compromising surge robustness or thermal performance |
| 600 W peak pulse power | Supports Level 4 IEC 61000-4-5 surge immunity (4 kV line-to-earth) in properly decoupled designs |
| Low clamping ratio (VC/VBR ≈ 1.17) | Minimizes overvoltage stress on downstream components compared to higher-ratio TVS devices |
| MSL Level 1 rating | Allows single-reflow assembly without dry-packaging or baking, reducing manufacturing cost and complexity |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across sensor output and ground to shunt transients before reaching ADC input stage. Use Value: Maintains signal fidelity during 100 V/50 ms load dump events by limiting voltage to ≤30.6 V, preventing ADC saturation or latch-up. |
Use Scenario: Safeguarding CANH/CANL differential pair against ESD and coupled surges in factory automation gateways. IC Role / Device Role / Timing Role: Symmetrical TVS placed between CANH-CANL and CANH-GND/CANL-GND to suppress common-mode and differential transients. Use Value: Enables uninterrupted CAN communication under ±8 kV contact ESD (IEC 61000-4-2) due to sub-1 ns response and low dynamic impedance. |
| Consumer USB Data Line Protection | Telecom DSL Line Interface |
Use Scenario: Shielding USB 2.0 D+/D− lines in set-top boxes from human-body-model ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed directly at connector to divert ESD current away from USB transceiver PHY. Use Value: Preserves signal integrity with <1 pF junction capacitance (typ.) while clamping ±15 kV air discharge to <35 V peak. |
Use Scenario: Front-end surge suppression on ADSL/VDSL line cards subjected to lightning-induced surges on twisted-pair copper lines. IC Role / Device Role / Timing Role: Primary protection device mounted before hybrid transformer and line driver IC to absorb multi-kW transients. Use Value: Withstands repeated 600 W surges per ITU-T K.20/K.21, extending service life of line interface ICs in outdoor DSLAM cabinets. |
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 (18.8 V) and VC (30.6 V), but lower PPPM (400 W); SMA package (smaller footprint, higher RθJA = 150 °C/W) | Limited to lower-energy transients; less suitable for automotive load dump or telecom surge standards | Select when board space is constrained and surge threat level is ≤400 W (e.g., consumer USB ports) |
| 1.5KE22CA | Higher PPPM (1500 W), axial-leaded DO-201 package; larger size, manual assembly only; VBR tighter (23.1–25.5 V) | Better for high-energy industrial mains protection but incompatible with SMT production and dense PCB layouts | Choose for legacy through-hole designs or where >600 W surge margin is mandatory and reflow compatibility is not required |
Compared with SMAJ22CA and 1.5KE22CA, the P6SMB22CAHM3_A/H uniquely balances 600 W surge capability, AEC-Q101 qualification, SMB SMT compatibility, and halogen-free compliance - making it optimal for new automotive and industrial designs requiring automated assembly and long-term supply stability.
Availability
P6SMB22CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial CAN gateways, consumer USB peripherals, and telecom DSL line cards requiring stable component supply across extended product lifecycles.
Supply support for P6SMB22CAHM3_A/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, efficiency, and application-specific optimization.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and communications equipment, engineered to meet stringent AEC-Q101, RoHS, and UL 94 V-0 requirements while supporting automated SMT manufacturing.
FAQ
What is the clamping voltage of P6SMB22CAHM3_A/H at its rated peak pulse current?
The P6SMB22CAHM3_A/H has a maximum clamping voltage (VC) of 30.6 V at 19.6 A peak pulse current (IPPM), measured under the standard 10/1000 μs waveform. This value ensures downstream ICs and sensors remain within safe operating voltage limits during transient events. The clamping performance is guaranteed across the full operating temperature range of −65 °C to +150 °C.
Is P6SMB22CAHM3_A/H suitable for automotive applications?
Yes, P6SMB22CAHM3_A/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant, and automotive-grade construction. It is specifically intended for use in engine control units, ADAS sensor interfaces, and infotainment systems where robustness against load dump, jump start, and ESD is mandatory per ISO 16750 and ISO 10605.
How does the bidirectional design of P6SMB22CAHM3_A/H affect its circuit implementation?
The bidirectional architecture of P6SMB22CAHM3_A/H means it conducts identically in both polarities - ideal for protecting AC-coupled, differential, or floating signal lines such as CAN bus, RS-485, or audio interfaces. Unlike unidirectional TVS diodes, P6SMB22CAHM3_A/H requires no orientation during placement and eliminates risk of reverse installation errors on PCBs.
What is the thermal resistance of P6SMB22CAHM3_A/H, and how does it impact PCB layout?
P6SMB22CAHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W when mounted on 0.2″ × 0.2″ (5.0 mm × 5.0 mm) copper pads per terminal. To maintain reliability under repetitive surges, designers should implement minimum pad dimensions and consider thermal vias - especially in enclosed or high-ambient-temperature environments.
Does P6SMB22CAHM3_A/H require special handling during reflow soldering?
No - P6SMB22CAHM3_A/H is rated MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C. It can be processed using standard lead-free reflow profiles without dry packing or baking, simplifying manufacturing flow and reducing moisture-related defects. Its matte tin-plated leads comply with J-STD-002 for solderability assurance.
P6SMB22CAHM3_A/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:
- Obsolete
- 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_A/H FAQ
1.How can I place an order for P6SMB22CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB22CAHM3_A/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_A/H reliable?
The price and inventory of P6SMB22CAHM3_A/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_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB22CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB22CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB22CAHM3_A/H?
P6SMB22CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB22CAHM3_A/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_A/H?
For technical support, including P6SMB22CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB22CAHM3_A/H requirements.
6.How does Aetrix verify that P6SMB22CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB22CAHM3_A/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_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB22CAHM3_A/H?
All P6SMB22CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB22CAHM3_A/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_A/H part is unused and in its original packaging.
Return procedure for P6SMB22CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB22CAHM3_A/H Tags
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