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Vishay General Semiconductor - Diodes Division P6SMB22AHM3_A/H
- Part No.:
- P6SMB22AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB22AHM3_A/H.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB22AHM3_A/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 a 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 - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the P6SMB22AHM3_A/H datasheet, P6SMB22AHM3_A/H pinout, P6SMB22AHM3_A/H application, or P6SMB22AHM3_A/H equivalent, key selection criteria include clamping voltage margin relative to protected circuit's absolute maximum rating, thermal derating above 25 °C ambient, unidirectional polarity alignment with DC rail orientation, and AEC-Q101 qualification status for automotive-grade reliability validation.
Technical Context
This TVS operates as a shunt-clamping device triggered by reverse-biased avalanche breakdown when transient voltage exceeds VBR. Its glass-passivated junction ensures stable leakage and fast response (<1 ns), while low incremental surge resistance minimizes clamping overshoot during high-di/dt events.
The device is rated for 100 A non-repetitive forward surge current (IFSM) and supports continuous power dissipation of 5.0 W at 50 °C on infinite heatsink. Junction temperature range spans −65 °C to +150 °C, with thermal resistance RθJA = 100 °C/W and RθJL = 20 °C/W - critical for PCB pad layout and thermal management in compact designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 18.8 V - maximum continuous reverse voltage before significant leakage; sets upper limit for normal operating rail voltage. |
| VBR (Breakdown) | 20.9–23.1 V at 1 mA - guaranteed avalanche initiation range; defines minimum overvoltage threshold for clamping action. |
| VC (Clamping) | 30.6 V at 19.6 A IPPM - peak voltage seen by protected circuit during 10/1000 μs transient; must stay below downstream IC's absolute max rating. |
| PPPM | 600 W - peak pulse power handling with 10/1000 μs waveform; determines survivability against lightning-induced surges per IEC 61000-4-5. |
| IPPM | 19.6 A - peak pulse current corresponding to VC; used to size series impedance (e.g., fuse, trace inductance) to limit energy delivered. |
| TJ max. | +150 °C - maximum junction temperature; requires thermal pad design per 0.2" × 0.2" copper pads to meet RθJA = 100 °C/W spec. |
| AEC-Q101 | Qualified - validated for automotive applications per stress test requirements; suffix HM3 denotes halogen-free, RoHS-compliant construction. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or lower-potential rail; completes clamping loop during reverse transient. |
| Cathode | Reverse-biased avalanche node | Connected to protected line (e.g., 24 V supply); conducts only when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges without degradation. |
| 30.6 V clamping voltage at 19.6 A | Provides 2.7× margin over 12 V nominal rail and 1.39× margin over 22 V system max, ensuring safe IC interface operation. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive under-hood and infotainment systems requiring extended temperature and reliability compliance. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., inductive switch-off), improving protection fidelity. |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements. |
Applications
| Industrial Power Supply Protection | Automotive Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V DC input rails in PLC modules against load dump and relay coil flyback. IC Role / Device Role / Timing Role: Shunt-clamping TVS placed directly across input terminals to divert surge energy to ground before reaching upstream regulators and controllers. Use Value: Clamps transients to ≤30.6 V, preserving 36 V-rated input stages and preventing latch-up in PMICs and microcontrollers. |
Use Scenario: Safeguarding CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) in engine control units. IC Role / Device Role / Timing Role: Unidirectional TVS mounted on each signal line to suppress ESD and coupled noise without affecting DC bias or signal integrity. Use Value: Sub-1 ns response and low leakage (<1 μA at 18.8 V) ensure no interference with 1 Mbps CAN signaling or 12-bit ADC reference stability. |
| Consumer Appliance Motor Drive Protection | Telecom DC Feeder Line Protection |
Use Scenario: Shielding gate drivers and bootstrap circuits in BLDC motor inverters from commutation spikes. IC Role / Device Role / Timing Role: Localized TVS at half-bridge output nodes to clamp shoot-through-induced voltage spikes before they reach MOSFET gates. Use Value: 100 A IFSM rating withstands repeated inductive kick events; 20 °C/W RθJL enables direct thermal coupling to copper pour for sustained pulse handling. |
Use Scenario: Guarding -48 V telecom power feeds against lightning-induced surges entering central office equipment. IC Role / Device Role / Timing Role: Primary-stage TVS on feed line input, coordinated with gas discharge tube (GDT) for staged protection architecture. Use Value: 600 W PPPM and 150 °C TJ max support long-duration surges up to 10 ms; halogen-free HM3 construction meets IPC-1752A material compliance. |
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/VC, but 400 W PPPM and SMA package (higher RθJA = 140 °C/W). | Limited to lower-energy transients; less suitable for IEC 61000-4-5 Level 4 due to reduced power rating. | Select when board space is constrained and surge threat level is Class 2 or lower. |
| 1.5SMC22A | Same electrical specs, but SMC (DO-214AB) package - larger footprint, lower RθJA = 75 °C/W. | Better thermal performance but incompatible with SMB-reflow profiles and dense layouts. | Choose for high-reliability industrial systems where thermal margin outweighs size constraints. |
Compared with SMAJ22A-E3/5B and 1.5SMC22A, the P6SMB22AHM3_A/H delivers optimal balance of 600 W surge capacity, SMB footprint compatibility, and AEC-Q101 qualification - making it preferred for automotive and space-constrained industrial designs requiring validated reliability.
Availability
P6SMB22AHM3_A/H is available at Aetrix Electronics and suitable for industrial power supplies, automotive sensor modules, consumer appliance motor drives, and telecom DC feeder lines requiring stable component supply with full traceability and lifecycle continuity.
Supply support for P6SMB22AHM3_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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets cost-sensitive yet robust transient suppression needs across automotive, industrial, and telecom sectors - engineered for high pulse power density, low clamping ratio, and seamless SMT integration.
FAQ
What is the clamping voltage of the P6SMB22AHM3_A/H at its rated peak pulse current?
The P6SMB22AHM3_A/H has a maximum clamping voltage (VC) of 30.6 V at 19.6 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured under standardized test conditions and defines the highest voltage the protected circuit will experience during a specified transient event. Designers must verify that this clamping level remains safely below the absolute maximum ratings of downstream components such as MOSFETs or interface ICs in the P6SMB22AHM3_A/H-protected system.
Is the P6SMB22AHM3_A/H suitable for automotive applications?
Yes, the P6SMB22AHM3_A/H is AEC-Q101 qualified, as indicated by the "HM3" suffix denoting halogen-free, RoHS-compliant construction with automotive-grade reliability validation. It operates across −65 °C to +150 °C junction temperature and meets MSL Level 1 reflow requirements. The P6SMB22AHM3_A/H is commonly deployed in engine control units, body electronics, and ADAS sensor interfaces where transient immunity and long-term stability under thermal cycling are critical.
How does the P6SMB22AHM3_A/H differ from bidirectional TVS diodes like P6SMB22CA?
The P6SMB22AHM3_A/H is unidirectional and functions only during reverse-biased transients, with polarity marked by a cathode band. In contrast, P6SMB22CA is bidirectional and clamps in both directions - suitable for AC lines or differential signals. The P6SMB22AHM3_A/H offers lower leakage at DC bias and avoids unintended conduction on positive-going transients, making it ideal for single-polarity rails like 12 V or 24 V systems where precise polarity alignment is maintained.
What is the thermal resistance and recommended PCB layout for the P6SMB22AHM3_A/H?
The P6SMB22AHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W. Vishay specifies mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve these values. To maintain thermal performance, designers should use solid copper pours connected to both anode and cathode pads, avoid thermal relief on vias, and ensure solder mask defined pads per IPC-7351B SMB footprint standards for the P6SMB22AHM3_A/H.
Does the P6SMB22AHM3_A/H require external series impedance for effective protection?
Yes, the P6SMB22AHM3_A/H must be used with appropriate series impedance - typically a fuse, PTC, or current-limiting resistor - to limit peak current and prevent thermal runaway during sustained overvoltage. Without series impedance, excessive power dissipation could exceed the 5.0 W steady-state rating or cause localized heating beyond the 150 °C junction limit. The P6SMB22AHM3_A/H datasheet assumes proper coordination with upstream protection elements to ensure reliable operation under both transient and fault conditions.
P6SMB22AHM3_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:
- 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_A/H FAQ
1.How can I place an order for P6SMB22AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB22AHM3_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 P6SMB22AHM3_A/H reliable?
The price and inventory of P6SMB22AHM3_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 P6SMB22AHM3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB22AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB22AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB22AHM3_A/H?
P6SMB22AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB22AHM3_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 P6SMB22AHM3_A/H?
For technical support, including P6SMB22AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB22AHM3_A/H requirements.
6.How does Aetrix verify that P6SMB22AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB22AHM3_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 P6SMB22AHM3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB22AHM3_A/H?
All P6SMB22AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB22AHM3_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 P6SMB22AHM3_A/H part is unused and in its original packaging.
Return procedure for P6SMB22AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB22AHM3_A/H Tags
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