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Vishay General Semiconductor - Diodes Division P6SMB22AHM3_B/H
- Part No.:
- P6SMB22AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB22AHM3_B/H.pdf
- Description:
- 600W,22V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,743
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Product details
Overview
P6SMB22AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features 22 V standoff voltage (VWM), 23.1 V maximum breakdown voltage (VBR), 30.6 V clamping voltage at 19.6 A peak pulse current, and 600 W peak pulse power capability with 10/1000 μs waveform - deployed in automotive sensor protection and industrial I/O interface circuits.
For engineers reviewing the P6SMB22AHM3_B/H datasheet, P6SMB22AHM3_B/H pinout, P6SMB22AHM3_B/H application, or P6SMB22AHM3_B/H equivalent, key selection criteria include its AEC-Q101 qualification, unidirectional polarity with cathode band marking, low incremental surge resistance, and compliance with J-STD-020 MSL level 1 (260 °C reflow).
Technical Context
This TVS diode operates as a clamping device triggered by reverse-biased avalanche breakdown above VBR (20.9–23.1 V), limiting transient overvoltage to ≤30.6 V at 19.6 A. Its glass-passivated junction ensures stable leakage (<1.0 μA at 18.8 V) and fast response time (<1.0 ns), critical for protecting MOSFET gates and microcontroller I/O pins against ESD and inductive switching spikes.
Thermally, it supports operation from −65 °C to +150 °C junction temperature, with RθJA = 100 °C/W and RθJL = 20 °C/W. The SMB package enables automated placement and meets UL 94 V-0 flammability rating, while the HM3 suffix confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified construction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 18.8 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC bias margin for protected line. |
| VBR (Breakdown Voltage) | 20.9–23.1 V at 1.0 mA - Avalanche onset range; ensures reliable triggering within tight tolerance for precise overvoltage thresholding. |
| VC (Clamping Voltage) | 30.6 V at IPPM = 19.6 A - Peak voltage seen by downstream circuit during 10/1000 μs transient; determines minimum required IC withstand rating. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capacity under standardized 10/1000 μs waveform; validates robustness against lightning surges and load dump events. |
| ID (Reverse Leakage) | <1.0 μA at VWM - Negligible standby current draw; avoids signal distortion or battery drain in always-on sensor interfaces. |
| TJ max. | +150 °C - Enables deployment in under-hood automotive environments and high-temperature industrial enclosures without derating. |
| Package | SMB (DO-214AA) - Low-profile surface-mount outline (4.57 × 3.94 × 2.20 mm); compatible with standard SMT pick-and-place and reflow profiles (MSL level 1). |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, cathode indicated by a band on one end. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for rated thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path / low-impedance return during clamping | Connected to ground or lower-potential rail; carries full transient current during reverse-bias avalanche event. |
| Cathode | Avalanche junction anode / high-impedance input during normal operation | Connected to protected line (e.g., CAN_H, 12 V supply rail); initiates clamping when voltage exceeds VBR relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control units and ADAS sensor modules. |
| 600 W peak pulse power (10/1000 μs) | Withstands high-energy transients such as ISO 7637-2 Pulse 1/2a/5a without degradation - eliminates need for external series impedance in many cases. |
| Glass passivated chip junction | Ensures stable VBR over lifetime and improved moisture resistance versus epoxy-passivated alternatives - critical for long-term field reliability. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., EFT bursts), improving protection margin for sub-3.3 V logic interfaces. |
| MSL level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without baking or special handling - reduces manufacturing cost and process complexity. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay environments exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between sensor output and MCU ADC input, referenced to chassis ground. Use Value: Limits transient excursions to ≤30.6 V, preventing latch-up or damage to 5 V-tolerant SAR ADC inputs while maintaining <1.0 μA leakage at 18.8 V bias. |
Use Scenario: Shielding 24 V digital input channels in programmable logic controllers from inductive kickback of solenoid drivers. IC Role / Device Role / Timing Role: Standoff device mounted across input terminals (24 V rail to GND), absorbing repetitive 600 W pulses without parameter drift. Use Value: Maintains functional integrity during 100+ surge events per hour due to low thermal resistance (RθJL = 20 °C/W) and AEC-Q101 stress validation. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Safeguarding RS-485 transceiver bus lines in outdoor security systems subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping element on differential pair (A/B lines), coordinated with common-mode chokes and secondary TVS. Use Value: Achieves <1 ns response time and 30.6 V clamping to preserve signal integrity up to 10 Mbps while meeting IEC 61000-4-5 Level 3 requirements. |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in smart home vacuum cleaners and HVAC blowers. IC Role / Device Role / Timing Role: Mounted across motor terminals (unidirectional configuration with cathode to +VCC), shunting inductive energy into bulk capacitance. Use Value: Handles 100 A non-repetitive forward surge (IFSM) and dissipates 600 W peaks without bond wire failure - extends motor driver MOSFET lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A-E3/5B | Same VWM (18.8 V), identical SMB package, but not AEC-Q101 qualified; higher ID (5.0 μA vs. 1.0 μA) and slightly higher VC (32.4 V). | Approved for commercial/industrial use only; unsuitable for automotive Tier-1 BOMs requiring AEC-Q101 traceability. | Select when cost sensitivity outweighs automotive qualification needs and leakage budget allows ≥5 μA. |
| 1.5SMC22AHE3_A/H | Higher PPPM (1500 W), same VWM/VC specs, but larger SMC (DO-214AB) package (7.11 × 6.22 mm); AEC-Q101 qualified. | Requires PCB layout change due to 2.5× larger footprint; preferred where system-level surge immunity exceeds 600 W requirement. | Choose when legacy designs must absorb >600 W transients (e.g., ISO 16750-2 Load Dump) and board space permits SMC footprint. |
Compared with SMAJ22A-E3/5B, P6SMB22AHM3_B/H offers tighter leakage and automotive qualification at no footprint penalty; versus 1.5SMC22AHE3_A/H, it delivers AEC-Q101 compliance in a smaller SMB package but with lower 600 W pulse rating - ideal for space-constrained automotive modules needing certified transient immunity.
Availability
P6SMB22AHM3_B/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom line conditioning requiring stable component supply, AEC-Q101 traceability, and consistent SMB package compatibility.
Supply support for P6SMB22AHM3_B/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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for low clamping voltage, fast response, and robust thermal performance in compact SMB packages.
FAQ
What is the clamping voltage of P6SMB22AHM3_B/H at its rated peak pulse current?
The P6SMB22AHM3_B/H has a maximum clamping voltage (VC) of 30.6 V at its specified peak pulse current (IPPM) of 19.6 A, measured under the standard 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during transient events and is confirmed in the Vishay datasheet revision 09-Jan-2024, page 2. The P6SMB22AHM3_B/H maintains this clamping performance across its full operating temperature range.
Is P6SMB22AHM3_B/H qualified for automotive applications?
Yes, P6SMB22AHM3_B/H is AEC-Q101 qualified, as indicated by the "HM3_B" suffix per Vishay's ordering information table (page 3). This qualification covers stress tests including temperature cycling, highly accelerated life testing (HALT), and ESD robustness - making P6SMB22AHM3_B/H suitable for under-hood and cabin electronics in passenger vehicles and commercial vehicles.
What does the "_B/H" suffix mean in P6SMB22AHM3_B/H?
The "_B" denotes AEC-Q101 qualification for the P6SMB22A variant (applicable to P6SMB6.8A–P6SMB220A), and "/H" specifies packaging in 7" diameter plastic tape and reel with 750 units per reel. This matches Vishay's ordering convention documented on page 3 of the P6SMB datasheet (Document Number: 88370, Revision: 09-Jan-2024). The P6SMB22AHM3_B/H thus combines halogen-free, RoHS-compliant, and automotive-qualified construction in standard SMT packaging.
How does P6SMB22AHM3_B/H differ from bidirectional variants like P6SMB22CA?
P6SMB22AHM3_B/H is unidirectional, with polarity marked by a cathode band and intended for DC-biased lines (e.g., 12 V supply rails), whereas P6SMB22CA is bidirectional and used in AC-coupled or differential signal paths (e.g., RS-485). Their breakdown voltages differ: P6SMB22AHM3_B/H has VBR = 20.9–23.1 V, while P6SMB22CA has symmetric VBR ≈ 22 V in both directions. The P6SMB22AHM3_B/H cannot replace P6SMB22CA in AC applications without circuit redesign.
What is the maximum operating temperature for P6SMB22AHM3_B/H?
The P6SMB22AHM3_B/H has a maximum junction temperature (TJ max.) of +150 °C and an operating junction/storage temperature range of −65 °C to +150 °C, as specified in the "Maximum Ratings" table (page 1). This rating enables use in high-ambient environments such as automotive engine control units and industrial motor drives, provided PCB thermal design meets the recommended 0.2" × 0.2" copper pad layout per terminal.
P6SMB22AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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)
P6SMB22AHM3_B/H FAQ
1.How can I place an order for P6SMB22AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB22AHM3_B/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 P6SMB22AHM3_B/H reliable?
The price and inventory of P6SMB22AHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB22AHM3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB22AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB22AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB22AHM3_B/H?
P6SMB22AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB22AHM3_B/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 P6SMB22AHM3_B/H?
For technical support, including P6SMB22AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB22AHM3_B/H requirements.
6.How does Aetrix verify that P6SMB22AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB22AHM3_B/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 P6SMB22AHM3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB22AHM3_B/H?
All P6SMB22AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB22AHM3_B/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 P6SMB22AHM3_B/H part is unused and in its original packaging.
Return procedure for P6SMB22AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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