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Vishay General Semiconductor - Diodes Division P6SMB22AHM3/I
- Part No.:
- P6SMB22AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB22AHM3/I.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,222
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Product details
Overview
P6SMB22AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 22 V breakdown voltage (VBR = 20.9–23.1 V at IT = 1.0 mA), 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 - deployed to safeguard MOSFETs, ICs, and sensor interfaces against ESD and inductive switching transients in automotive and industrial control systems.
For engineers reviewing the P6SMB22AHM3/I datasheet, P6SMB22AHM3/I pinout, P6SMB22AHM3/I application, or P6SMB22AHM3/I equivalent, key selection criteria include its AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, SMB (DO-214AA) package thermal resistance (RθJA = 100 °C/W), unidirectional polarity with cathode band marking, and 150 °C maximum junction temperature.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below its reverse standoff voltage (VWM = 18.8 V) and rapidly transitions to low-impedance conduction above its breakdown threshold to divert transient energy away from protected circuitry. Its glass-passivated junction ensures stable leakage performance and long-term reliability under repetitive surge stress.
The P6SMB22AHM3/I delivers fast response time (<1 ps), low incremental surge resistance, and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow compatibility. Its 100 A IFSM rating supports high-energy single-event surges, while its 5.0 W steady-state power dissipation enables continuous operation in thermally constrained layouts.
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 clamping onset window for predictable overvoltage triggering |
| 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 600 W transient event |
| IPPM | 19.6 A - peak surge current capability with 10/1000 µs waveform, enabling protection against severe inductive spikes |
| TJ max. | +150 °C - allows reliable operation in under-hood automotive or high-ambient industrial environments |
| RθJA | 100 °C/W - thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads, critical for thermal design margining |
| Package | SMB (DO-214AA) - compact 3.94 mm × 2.20 mm surface-mount footprint compatible with automated assembly |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1, 260 °C peak reflow profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (unidirectional) | Connected to ground or lower-potential rail; current flows anode-to-cathode during clamping |
| Cathode | Reverse-biased terminal (marked with band) | Connected to protected line; reverse voltage applied here triggers avalanche breakdown and clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per stress test plan |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for modern electronics without compromising surge robustness |
| 600 W peak pulse power | Withstands high-energy transients common in motor drives, solenoid controls, and power supply input stages |
| Glass-passivated junction | Ensures stable leakage current (<1.0 µA at VWM) and long-term parameter stability across life cycle |
| Low clamping ratio (VC/VBR ≈ 1.32) | Minimizes voltage overshoot during clamping, reducing stress on downstream silicon like microcontrollers or gate drivers |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs and body control modules from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp positive transients up to ±100 V. Use Value: Withstands 100 A IFSM and maintains VC ≤ 30.6 V, preventing latch-up or damage to 3.3 V/5 V logic supplies downstream. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: Low-capacitance TVS on differential or single-ended signal lines to suppress sub-100 ns transients without signal distortion. Use Value: 1.0 µA max leakage at 18.8 V preserves signal integrity in µA-level sensor bias networks and avoids offset errors. |
| DC-DC Converter Input Stage | Motor Drive Gate Driver Protection |
|
Use Scenario: Safeguarding buck/boost converter inputs against back-EMF from relay coils and contactor switching. IC Role / Device Role / Timing Role: Primary overvoltage clamp on VIN rail upstream of controller IC and input capacitor. Use Value: 600 W PPPM rating absorbs repetitive 10/1000 µs surges without degradation, supporting >100,000-cycle reliability in industrial SMPS. |
Use Scenario: Protecting high-side and low-side MOSFET gate drivers from Miller-induced voltage spikes during fast switching. IC Role / Device Role / Timing Role: Localized TVS on gate-source or gate-drain nodes to limit dv/dt-induced false turn-on. Use Value: Fast <1 ps response ensures clamping initiates before gate oxide breakdown, preserving driver IC lifetime in 100 kHz+ inverters. |
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 VBR range (20.9–23.1 V), but SMA package (smaller footprint, higher RθJA = 140 °C/W), non-AEC-Q101 | Limited to commercial-grade applications; unsuitable for automotive due to lack of stress qualification | Select when board space is constrained and automotive qualification is not required |
| 1.5SMC22A | Same electrical specs, but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm), RθJA = 65 °C/W, no AEC-Q101 option | Better thermal performance but incompatible with dense PCB layouts; no automotive variant available | Choose for high-power industrial designs where thermal margin outweighs size constraints |
Compared with SMAJ22A-E3/5B and 1.5SMC22A, the P6SMB22AHM3/I uniquely combines AEC-Q101 qualification, halogen-free compliance, and SMB-size thermal efficiency - making it the only drop-in solution for automotive Tier-1 power rail protection requiring both reliability and manufacturability.
Availability
P6SMB22AHM3/I is available at Aetrix Electronics and suitable for automotive electronics, industrial motor control, and telecom power supply designs requiring stable component supply, long-lifecycle support, and traceable sourcing for production ramp.
Supply support for P6SMB22AHM3/I 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 computing systems - engineered for robust surge handling, tight parametric consistency, and seamless integration into automated SMT lines.
FAQ
What is the maximum clamping voltage of the P6SMB22AHM3/I under a 10/1000 µs surge?
The P6SMB22AHM3/I has a maximum clamping voltage (VC) of 30.6 V when subjected to its rated peak pulse current of 19.6 A using the standardized 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88370 and reflects worst-case voltage seen by protected circuitry during full-power transient events - critical for ensuring downstream components remain within absolute maximum ratings.
Is the P6SMB22AHM3/I qualified for automotive applications?
Yes, the P6SMB22AHM3/I is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's ordering information table (page 3, footnote 1). This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and surge endurance - validating its suitability for under-hood and chassis-mounted automotive electronics where reliability under thermal and electrical stress is mandatory.
What does the "HM3" suffix indicate in P6SMB22AHM3/I?
The "HM3" suffix in P6SMB22AHM3/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Specifically, "H" indicates AEC-Q101 compliance, "M" signifies halogen-free molding compound, and "3" confirms RoHS compliance. The trailing "/I" specifies packaging in 13-inch tape-and-reel format with 3200 units per reel - essential for high-volume SMT manufacturing traceability.
How does the P6SMB22AHM3/I compare to bidirectional TVS diodes in circuit implementation?
The P6SMB22AHM3/I is unidirectional and must be oriented with its cathode band toward the protected line - unlike bidirectional variants (e.g., P6SMB22CA) which suppress both polarities symmetrically. This makes the P6SMB22AHM3/I ideal for DC power rails where only positive transients occur, offering tighter VBR tolerance and lower leakage than bidirectional equivalents, while simplifying layout by eliminating polarity ambiguity.
What is the thermal resistance and recommended pad layout for the P6SMB22AHM3/I?
The P6SMB22AHM3/I 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, as specified in the Vishay datasheet. Minimum pad dimensions are 0.060" × 0.086" (1.52 mm × 2.18 mm); exceeding these improves thermal performance and surge survivability - especially important in high-duty-cycle industrial applications.
P6SMB22AHM3/I 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:
- 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/I FAQ
1.How can I place an order for P6SMB22AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB22AHM3/I 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/I reliable?
The price and inventory of P6SMB22AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB22AHM3/I is usually 5 days.
3.What payment methods are accepted for P6SMB22AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB22AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB22AHM3/I?
P6SMB22AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB22AHM3/I 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/I?
For technical support, including P6SMB22AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB22AHM3/I requirements.
6.How does Aetrix verify that P6SMB22AHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB22AHM3/I 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/I meets industry standards.
7.What is the process for return or replacement of P6SMB22AHM3/I?
All P6SMB22AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB22AHM3/I, 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/I part is unused and in its original packaging.
Return procedure for P6SMB22AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB22AHM3/I Tags
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