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Vishay General Semiconductor - Diodes Division P6SMB22CAHM3_B/I
- Part No.:
- P6SMB22CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB22CAHM3_B/I.pdf
- Description:
- 600W,22V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB22CAHM3_B/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 22 V standoff voltage (VWM), 24.4–26.9 V breakdown voltage (VBR) at 1 mA, 30.6 V maximum clamping voltage (VC) at 19.6 A peak pulse current (IPPM), and 600 W peak pulse power capability with 10/1000 μs waveform.
For engineers reviewing the P6SMB22CAHM3_B/I datasheet, P6SMB22CAHM3_B/I pinout, P6SMB22CAHM3_B/I application, or P6SMB22CAHM3_B/I equivalent, this device is selected for robust ESD and surge protection in automotive-grade sensor interfaces, industrial I/O lines, and telecom power rails where bidirectional clamping, AEC-Q101 qualification, and low-profile SMB packaging are required.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance in forward and reverse directions. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ns), while the low incremental surge resistance supports effective energy diversion during transient events.
The device is rated for 150 °C maximum junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its AEC-Q101 qualification (denoted by HM3_B/I suffix) confirms suitability for automotive electronics under extended thermal and mechanical stress conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 22 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for protected line. |
| VBR (Breakdown Voltage) | 24.4–26.9 V at 1 mA - Voltage at which device enters avalanche conduction; tight tolerance ensures predictable turn-on behavior. |
| VC (Clamping Voltage) | 30.6 V at 19.6 A IPPM - Peak voltage seen by downstream circuit during 10/1000 μs surge; determines protection level for sensitive ICs. |
| PPPM (Peak Pulse Power) | 600 W - Maximum transient energy dissipation capability with standard 10/1000 μs waveform; enables handling of IEC 61000-4-5 Level 4 surges. |
| ID (Reverse Leakage) | ≤1.0 μA at 22 V - Minimal DC loading on protected line during normal operation; preserves signal integrity and power efficiency. |
| TJ max. | 150 °C - Maximum junction temperature rating; supports operation in under-hood automotive and high-ambient industrial environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces per stress test requirements. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. No polarity marking on bidirectional variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (reverse polarity) | Accepts surge current when voltage exceeds VWM in negative direction; symmetrical to Cathode in bidirectional operation. |
| Cathode | Transient current entry (forward polarity) | Accepts surge current when voltage exceeds VWM in positive direction; functionally identical to Anode for P6SMB22CAHM3_B/I. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints. |
| 600 W peak pulse power (10/1000 μs) | Supports robust immunity against lightning-induced surges and inductive switching transients in industrial and automotive systems. |
| AEC-Q101 qualified (HM3_B/I) | Validated for automotive use including temperature cycling, mechanical shock, and humidity testing per JEDEC standards. |
| Low profile SMB (DO-214AA) package | 0.220" × 0.130" footprint enables high-density PCB layouts and compatibility with automated SMT assembly. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; simplifies manufacturing logistics. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector or IC input pin to limit transient overvoltage before it reaches signal conditioning circuitry. Use Value: Maintains signal fidelity under ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-2 ±15 kV contact discharge while meeting AEC-Q101 reliability requirements. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers against field wiring surges. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on terminal block side, shunting surge energy before it propagates into precision op-amp or ADC stages. Use Value: Limits clamped voltage to ≤30.6 V, preserving input stage integrity during 1 kV/500 A IEC 61000-4-5 combination wave tests. |
| Telecom Power Rail Protection | Consumer USB Port ESD Protection |
Use Scenario: Secondary overvoltage protection on +12 V or +48 V telecom power distribution boards exposed to induced surges from nearby AC mains or antenna coupling. IC Role / Device Role / Timing Role: Coordinated clamping device used alongside primary MOVs or GDTs to handle fast-rising, lower-energy transients that bypass bulk protectors. Use Value: Responds in <1 ns to clamp sub-microsecond spikes, reducing stress on downstream DC/DC converters and PMICs. |
Use Scenario: Board-level ESD protection for USB 2.0 data lines (D+/D−) and VBUS in set-top boxes or smart displays. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed adjacent to USB connector to divert IEC 61000-4-2 discharges before reaching USB transceiver. Use Value: Delivers <1.0 μA leakage at 22 V, minimizing impact on signal rise/fall times while meeting ±15 kV contact ESD immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22CA | Same VWM (22 V) and bidirectional configuration, but 400 W PPPM rating and SMA package (larger footprint, higher RθJA). | Limited to lower-energy transients; not AEC-Q101 qualified. | Select when cost sensitivity outweighs automotive qualification or surge margin requirements. |
| SMCJ22CA | Higher PPPM (1500 W), same VWM and bidirectional operation, but larger SMC (DO-214AB) package and higher clamping voltage (35.5 V). | Better for high-energy surges but increases board space and may exceed downstream IC voltage tolerances. | Choose when protecting against severe IEC 61000-4-5 Level 5 surges where 30.6 V clamping is insufficient. |
Compared with SMAJ22CA and SMCJ22CA, P6SMB22CAHM3_B/I delivers optimal balance of AEC-Q101 compliance, compact SMB footprint, and 600 W surge handling-making it preferred for space-constrained automotive and industrial designs requiring validated reliability and precise clamping control.
Availability
P6SMB22CAHM3_B/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, and telecom power distribution systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for P6SMB22CAHM3_B/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, power efficiency, and application-specific validation.
The P6SMB Series is engineered for high-reliability transient suppression in automotive, industrial, and telecom infrastructure-delivering consistent clamping performance, AEC-Q101 qualification, and optimized thermal design in standardized SMB packages.
FAQ
What does the "CA" suffix mean in P6SMB22CAHM3_B/I?
The "CA" suffix in P6SMB22CAHM3_B/I indicates a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression in both polarities. This eliminates the need for polarity-aware placement and makes it ideal for protecting AC-coupled lines, differential signals, or floating interfaces where voltage reversals may occur. Unlike unidirectional variants (e.g., P6SMB22AHM3_B/I), P6SMB22CAHM3_B/I has no cathode band marking and exhibits identical VBR, VC, and IPPM characteristics in either direction.
Is P6SMB22CAHM3_B/I suitable for automotive applications?
Yes, P6SMB22CAHM3_B/I is explicitly AEC-Q101 qualified, as confirmed by the "HM3_B/I" ordering suffix and Vishay documentation. It undergoes rigorous stress testing-including temperature cycling, highly accelerated life testing (HALT), and mechanical shock-to ensure reliability in automotive environments such as engine control units, body control modules, and ADAS sensor nodes. Its 150 °C TJ max. and MSL Level 1 rating further support under-hood and infotainment system deployment.
What is the clamping voltage of P6SMB22CAHM3_B/I at its rated peak pulse current?
The clamping voltage (VC) of P6SMB22CAHM3_B/I is 30.6 V at 19.6 A peak pulse current (IPPM), measured using the standard 10/1000 μs double-exponential waveform. This value represents the maximum voltage imposed on the protected circuit during a worst-case surge event and is critical for ensuring downstream components-such as microcontrollers, transceivers, or ADCs-remain within their absolute maximum voltage ratings.
How does the SMB (DO-214AA) package of P6SMB22CAHM3_B/I compare to SMA or SMC alternatives?
The SMB (DO-214AA) package of P6SMB22CAHM3_B/I measures 0.220" × 0.130" with a low profile, offering 30% smaller footprint than SMC (DO-214AB) and ~15% smaller than SMA (DO-214AC). It maintains 600 W PPPM while enabling higher PCB density and compatibility with fine-pitch automated placement. Thermal resistance is RθJA = 100 °C/W (typical), balanced between size and dissipation-making P6SMB22CAHM3_B/I optimal where space and surge rating must coexist without upgrading to larger packages.
Does P6SMB22CAHM3_B/I require derating at elevated ambient temperatures?
Yes, P6SMB22CAHM3_B/I requires thermal derating above TA = 25 °C, as shown in Figure 2 of the Vishay datasheet (Document Number: 88370). Its peak pulse power capability decreases linearly: at 85 °C ambient, PPPM drops to approximately 420 W (70% of rated 600 W); at 125 °C, it falls to ~240 W (40%). Designers must apply this derating when sizing for sustained high-temperature environments-especially in automotive under-hood or industrial enclosure applications.
P6SMB22CAHM3_B/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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)
P6SMB22CAHM3_B/I FAQ
1.How can I place an order for P6SMB22CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB22CAHM3_B/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 P6SMB22CAHM3_B/I reliable?
The price and inventory of P6SMB22CAHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB22CAHM3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB22CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB22CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB22CAHM3_B/I?
P6SMB22CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB22CAHM3_B/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 P6SMB22CAHM3_B/I?
For technical support, including P6SMB22CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB22CAHM3_B/I requirements.
6.How does Aetrix verify that P6SMB22CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB22CAHM3_B/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 P6SMB22CAHM3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB22CAHM3_B/I?
All P6SMB22CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB22CAHM3_B/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 P6SMB22CAHM3_B/I part is unused and in its original packaging.
Return procedure for P6SMB22CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB22CAHM3_B/I Tags
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