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Vishay General Semiconductor - Diodes Division P6SMB22AHE3/52
- Part No.:
- P6SMB22AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB22AHE3/52.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB22AHE3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the 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 at 19.6 A peak pulse current (10/1000 µs), and 600 W peak pulse power capability - deployed in automotive sensor protection and industrial power supply input stages.
For engineers reviewing the P6SMB22AHE3/52 datasheet, P6SMB22AHE3/52 pinout, P6SMB22AHE3/52 application, or P6SMB22AHE3/52 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, clamping performance under 10/1000 µs surge, thermal resistance (RθJA = 100 °C/W), and RoHS-compliant matte tin-plated terminals suitable for J-STD-002 soldering.
Technical Context
The P6SMB22AHE3/52 operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast response to ESD and lightning-induced transients. Its clamping action begins at VWM = 18.8 V and fully engages by VC = 30.6 V at IPPM = 19.6 A, maintaining low incremental surge resistance for consistent energy absorption.
Designed for surface-mount assembly on 0.2" × 0.2" copper pads, it meets MSL Level 1 per J-STD-020 (peak reflow = 260 °C) and supports repetitive 0.01% duty cycle surges. The cathode band denotes polarity, and its SMB package provides mechanical robustness while enabling automated placement in high-volume production.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at 1.0 mA test current - defines reliable avalanche onset range for design margining |
| VWM | 18.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 30.6 V at 19.6 A (10/1000 µs) - clamping voltage limiting stress on downstream ICs or MOSFETs |
| PPPM | 600 W - peak transient power handling capacity under standardized surge waveform |
| IPPM | 19.6 A - maximum non-repetitive surge current the device safely clamps without failure |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| RθJA | 100 °C/W - thermal resistance from junction to ambient, critical for PCB pad layout and derating above 25 °C |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. Cathode indicated by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient clamp output node | Connected to protected line; conducts during overvoltage to shunt surge current to ground |
| Anode (unbanded end) | Reference/return path | Typically tied to system ground or lower-potential rail; completes clamping path during reverse-biased surge |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and ADAS sensor interfaces |
| 600 W peak pulse power (10/1000 µs) | Robust suppression of ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 surges |
| Glass passivated junction | Enhanced reliability and stable VBR tolerance across temperature and lifetime |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking; compatible with high-throughput assembly lines |
| RoHS-compliant & halogen-free option available | Meets environmental compliance requirements for global automotive and industrial OEMs |
Applications
| Automotive Sensor Protection | Industrial Power Supply Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and inductive switching transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before they reach sensitive analog inputs or communication ICs. Use Value: Limits voltage to ≤30.6 V during 19.6 A surges, preventing latch-up or gate oxide damage in downstream ASICs and microcontrollers. |
Use Scenario: Safeguarding AC-DC and DC-DC converter inputs against lightning-induced surges and AC line transients in factory automation equipment. IC Role / Device Role / Timing Role: Primary-level transient suppressor mounted at board edge, upstream of fuse and rectifier, absorbing energy before filtering stages. Use Value: Withstands 600 W pulses without degradation, reducing need for redundant protection and simplifying input stage design. |
| Consumer Device USB Port Protection | Telecom Line Interface Protection |
Use Scenario: Shielding USB 2.0 data lines and VBUS in set-top boxes and smart displays from ESD events and hot-plug transients. IC Role / Device Role / Timing Role: Unidirectional TVS on VBUS rail only (not data lines), providing low-leakage (<1 µA at 18.8 V) standby protection. Use Value: Maintains 18.8 V stand-off to avoid interference with 5 V regulation while clamping to 30.6 V during ±8 kV contact ESD per IEC 61000-4-2. |
Use Scenario: Protecting Ethernet PHY interfaces and DSL line drivers from induced surges on outdoor-facing telecom ports. IC Role / Device Role / Timing Role: Secondary-stage TVS on low-voltage side of isolation transformer, complementing primary gas discharge tube (GDT) protection. Use Value: Fast 10−12 s response ensures clamping occurs before GDT fires, minimizing let-through voltage to PHY ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A-E3/52 | Same VBR range (20.9–23.1 V), but SMA package (DO-214AC); RθJA = 130 °C/W vs. 100 °C/W | Lower power density; less suitable for high-ambient automotive under-hood use | Select when board space allows larger footprint and thermal budget permits higher junction rise |
| 1.5SMC22A | Same electrical specs, but SMC (DO-214AB) package; higher IPPM = 21.7 A and PPPM = 1500 W | Over-specified for 600 W needs; larger footprint and cost premium | Choose only if future-proofing for higher surge classes or legacy SMC footprint compatibility is required |
Compared with SMAJ22A-E3/52 and 1.5SMC22A, the P6SMB22AHE3/52 delivers optimal balance of AEC-Q101 qualification, SMB footprint compactness, and thermal performance (100 °C/W) for space-constrained automotive and industrial designs requiring validated reliability.
Availability
P6SMB22AHE3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial power supply inputs, and consumer USB VBUS protection requiring stable component supply, AEC-Q101 compliance, and repeatable surge performance.
Supply support for P6SMB22AHE3/52 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade validation.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom infrastructure, combining AEC-Q101 qualification, robust 600 W surge handling, and surface-mount scalability for automated manufacturing.
FAQ
What is the polarity configuration of P6SMB22AHE3/52?
The P6SMB22AHE3/52 is a unidirectional TVS diode, with the cathode identified by a visible band on the SMB package. This polarity enables clamping only during reverse-biased overvoltage events - such as positive transients on a grounded-line configuration - and blocks forward conduction below ~3.5 V. Its unidirectional nature distinguishes P6SMB22AHE3/52 from bidirectional variants like P6SMB22CA, which lack polarity marking and suppress surges in both directions.
Is P6SMB22AHE3/52 qualified to AEC-Q101 standards?
Yes, P6SMB22AHE3/52 is AEC-Q101 qualified, as confirmed by the "HE3" suffix in its ordering code and documentation in Vishay's P6SMB series datasheet (Rev. 09-Jan-2024, Doc. #88370). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD, making P6SMB22AHE3/52 suitable for automotive applications such as body control modules and ADAS sensor units where reliability under thermal and vibration stress is mandatory.
What is the maximum clamping voltage of P6SMB22AHE3/52 under surge conditions?
The maximum clamping voltage (VC) of P6SMB22AHE3/52 is 30.6 V, measured at a peak pulse current (IPPM) of 19.6 A using the standardized 10/1000 µs double-exponential waveform. This value represents the upper limit of voltage seen by downstream circuitry during worst-case transient events, ensuring protected components like 3.3 V or 5 V logic ICs remain within safe operating limits. VC is guaranteed across the full operating temperature range and is directly traceable to Vishay's published electrical characteristics table.
How does the SMB package of P6SMB22AHE3/52 affect thermal performance?
The SMB (DO-214AA) package of P6SMB22AHE3/52 delivers a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads - significantly better than the SMA package's 130 °C/W. This lower RθJA allows P6SMB22AHE3/52 to sustain higher average power dissipation and operate reliably at elevated ambient temperatures, especially critical in under-hood automotive environments where junction temperature must stay below +150 °C. Layout adherence to Vishay's recommended pad dimensions is essential to achieve this rating.
Can P6SMB22AHE3/52 be used in bidirectional signal line protection?
No, P6SMB22AHE3/52 is strictly unidirectional and unsuitable for bidirectional signal line protection such as RS-485 or CAN bus differential pairs. Its cathode-anode asymmetry means it only clamps positive transients relative to ground; negative excursions will not be suppressed. For bidirectional applications, engineers must select the corresponding CA-suffixed variant - e.g., P6SMB22CAHE3/52 - which features symmetrical breakdown in both polarities and no polarity marking. Using P6SMB22AHE3/52 in place of a bidirectional TVS risks unprotected negative surges damaging interface ICs.
P6SMB22AHE3/52 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB22AHE3/52 FAQ
1.How can I place an order for P6SMB22AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB22AHE3/52 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 P6SMB22AHE3/52 reliable?
The price and inventory of P6SMB22AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB22AHE3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB22AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB22AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB22AHE3/52?
P6SMB22AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB22AHE3/52 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 P6SMB22AHE3/52?
For technical support, including P6SMB22AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB22AHE3/52 requirements.
6.How does Aetrix verify that P6SMB22AHE3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB22AHE3/52 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 P6SMB22AHE3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB22AHE3/52?
All P6SMB22AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB22AHE3/52, 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 P6SMB22AHE3/52 part is unused and in its original packaging.
Return procedure for P6SMB22AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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