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Vishay General Semiconductor - Diodes Division P6SMB22A-M3/5B
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- Part No.:
- P6SMB22A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB22A-M3/5B.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,924
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Product details
Overview
P6SMB22A-M3/5B 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 a 22 V breakdown voltage (VBR = 20.9–23.1 V at IT = 1.0 mA), 18.8 V stand-off voltage (VWM), 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 - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the P6SMB22A-M3/5B datasheet, P6SMB22A-M3/5B pinout, P6SMB22A-M3/5B application, or P6SMB22A-M3/5B equivalent, this part delivers verified transient suppression performance for 24 V rail protection, meets AEC-Q101 qualification (via M3 suffix with _B revision), supports automated SMT placement, and offers halogen-free, RoHS-compliant construction with MSL Level 1 moisture sensitivity.
Technical Context
This unidirectional TVS diode operates as a voltage-clamping device triggered by overvoltage events exceeding its reverse stand-off voltage (18.8 V). Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at VWM), while its low incremental surge resistance enables effective energy diversion during fast transients.
The device responds within picoseconds to ESD and lightning-induced surges, clamping to ≤30.6 V at 19.6 A (10/1000 μs), and sustains repetitive pulses at 0.01% duty cycle. Thermal resistance is 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), requiring minimum 5.0 mm × 5.0 mm copper pads per terminal for rated power dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at 1.0 mA test current - defines precise voltage threshold where clamping initiates |
| VWM | 18.8 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 30.6 V at 19.6 A - clamped voltage seen by protected circuit during full-rated 600 W transient |
| PPPM | 600 W - peak pulse power handling with 10/1000 μs waveform, critical for IEC 61000-4-5 surge immunity |
| IPPM | 19.6 A - peak pulse current capability directly tied to PCB pad thermal design (0.2" × 0.2" Cu) |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive and industrial environments |
| Package | SMB (DO-214AA) - standardized surface-mount outline with cathode band marking, compatible with J-STD-002 soldering |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, UL 94 V-0 flammability rating, and polarity indicated by cathode band on unidirectional types.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-voltage reference; completes conduction path during reverse-biased transient |
| Cathode | High-side connection point | Connected to protected line (e.g., 24 V rail); blocks normal operation, conducts only during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables compliance with IEC 61000-4-5 Level 3 (1 kV/2 kV surge) without derating in standard layouts |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental requirements for industrial and automotive electronics without compromising surge robustness |
| AEC-Q101 qualified (_B revision) | Validated for automotive powertrain and body electronics applications requiring extended reliability testing |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving protection margin for downstream 24 V logic |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow assembly without preconditioning or baking |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protecting 24 V input rails of programmable logic controllers (PLCs) against load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between 24 V rail and ground to clamp surges before they reach DC-DC converters and microcontrollers. Use Value: Limits transient voltage to ≤30.6 V, preserving 36 V-rated input stages and eliminating need for oversized input capacitors. |
Use Scenario: Safeguarding LIN bus transceivers and window motor drivers in BCMs exposed to battery voltage spikes during alternator load dump. IC Role / Device Role / Timing Role: Standoff clamping device on 12 V/24 V supply lines, activated only during >18.8 V events with sub-nanosecond response. Use Value: Prevents latch-up and permanent damage to 3.3 V/5 V MCU peripherals while maintaining signal integrity during normal operation. |
| Telecom Remote Radio Unit (RRU) | Consumer Appliance Motor Drive Board |
Use Scenario: Shielding Ethernet PHY power inputs and RS-485 interface lines in outdoor base station RRUs subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on isolated DC bias rails feeding RF front-end amplifiers and clock buffers. Use Value: Absorbs up to 600 W of surge energy without degradation, ensuring uptime in harsh electromagnetic environments. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machine control boards. IC Role / Device Role / Timing Role: Fast-acting shunt protector across motor terminals and H-bridge supply rails to prevent gate oxide failure in MOSFETs. Use Value: Clamps flyback voltages to 30.6 V, allowing use of 40 V-rated MOSFETs instead of higher-cost 60 V+ devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A | Same VBR range (20.9–23.1 V), but lower PPPM = 400 W and higher VC = 35.5 V at 11.8 A | Limited to lower-energy transients (e.g., ESD-only); not suitable for IEC 61000-4-5 Level 3 | Select when cost is prioritized over surge margin and board space allows larger layout for thermal management |
| 1.5SMC22A | Higher PPPM = 1500 W, same VBR, but DO-214AB (SMC) package - 30% larger footprint and 2× thermal mass | Better suited for high-repetition surge environments (e.g., factory automation drives), but incompatible with SMB-reflow profiles | Choose only if system-level testing confirms need for >600 W rating and PCB layout accommodates SMC outline |
Compared with SMAJ22A and 1.5SMC22A, P6SMB22A-M3/5B delivers optimal balance of 600 W surge capacity, SMB footprint compatibility, and AEC-Q101 qualification - making it the preferred choice for space-constrained 24 V industrial and automotive modules requiring production-grade reliability.
Availability
P6SMB22A-M3/5B is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, telecom remote radio units, and consumer appliance motor drive boards requiring stable component supply with halogen-free, AEC-Q101-qualified TVS protection.
Supply support for P6SMB22A-M3/5B 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 validation.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for robust clamping performance, automated assembly compatibility, and long-term stability under thermal and electrical stress.
FAQ
What is the exact breakdown voltage range for P6SMB22A-M3/5B?
The P6SMB22A-M3/5B has a guaranteed breakdown voltage (VBR) range of 20.9 V to 23.1 V at a test current of 1.0 mA, as specified in the Vishay datasheet revision 09-Jan-2024. This tight tolerance ensures consistent clamping behavior across production lots and supports precise overvoltage threshold design in 24 V systems. The P6SMB22A-M3/5B maintains this specification under standard test conditions (TA = 25 °C) and is validated across its full operating temperature range.
Is P6SMB22A-M3/5B suitable for automotive applications?
Yes, P6SMB22A-M3/5B is qualified to AEC-Q101 when ordered with the _B revision suffix (as indicated in the ordering table), confirming its suitability for automotive body electronics, infotainment power rails, and BCM modules. The P6SMB22A-M3/5B undergoes stress testing including temperature cycling, humidity bias, and surge endurance - all aligned with automotive reliability requirements. Its halogen-free M3 construction further supports compliance with automotive material restrictions.
What is the maximum clamping voltage of P6SMB22A-M3/5B under surge conditions?
The P6SMB22A-M3/5B clamps to a maximum of 30.6 V at its rated peak pulse current of 19.6 A (10/1000 μs waveform), as measured per JEDEC standards. This value represents the worst-case voltage imposed on the protected circuit during full-rated surge events. The P6SMB22A-M3/5B achieves this performance with low incremental resistance, minimizing overshoot and ensuring downstream components see predictable, bounded stress.
Does P6SMB22A-M3/5B require special PCB layout considerations?
Yes - the P6SMB22A-M3/5B requires minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads on both anode and cathode terminals to achieve its rated 600 W peak pulse power and thermal performance. Smaller pads reduce heat dissipation, causing premature thermal runaway during repetitive surges. The P6SMB22A-M3/5B datasheet explicitly specifies this layout for all ratings; deviation invalidates the published PPPM and IPPM values.
How does the M3 suffix affect the P6SMB22A-M3/5B specification?
The M3 suffix on P6SMB22A-M3/5B denotes halogen-free, RoHS-compliant construction with matte tin-plated leads meeting JESD 201 Class 2 whisker resistance - identical electrically to E3-suffix parts but with stricter material content controls. The P6SMB22A-M3/5B retains all electrical, thermal, and mechanical specifications of the base P6SMB22A series, including 600 W PPPM, 150 °C TJ max, and SMB package dimensions.
P6SMB22A-M3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Box (TB)
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB22A-M3/5B FAQ
1.How can I place an order for P6SMB22A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB22A-M3/5B 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 P6SMB22A-M3/5B reliable?
The price and inventory of P6SMB22A-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB22A-M3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB22A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB22A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB22A-M3/5B?
P6SMB22A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB22A-M3/5B 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 P6SMB22A-M3/5B?
For technical support, including P6SMB22A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB22A-M3/5B requirements.
6.How does Aetrix verify that P6SMB22A-M3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB22A-M3/5B 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 P6SMB22A-M3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB22A-M3/5B?
All P6SMB22A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB22A-M3/5B, 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 P6SMB22A-M3/5B part is unused and in its original packaging.
Return procedure for P6SMB22A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB22A-M3/5B Tags
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