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Vishay General Semiconductor - Diodes Division P6SMB170CAHE3_B/H
- Part No.:
- P6SMB170CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB170CAHE3_B/H.pdf
- Description:
- 600W,170V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB170CAHE3_B/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 170 V standoff voltage (VWM), 189 V minimum breakdown voltage (VBR), 234 V maximum clamping voltage (VC) at 2.6 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial systems.
For engineers reviewing the P6SMB170CAHE3_B/H datasheet, P6SMB170CAHE3_B/H pinout, P6SMB170CAHE3_B/H application, or P6SMB170CAHE3_B/H equivalent, this device delivers AEC-Q101 qualification, low incremental surge resistance, fast response time, and MSL Level 1 moisture sensitivity - critical for high-reliability board-level ESD and surge protection design.
Technical Context
The P6SMB170CAHE3_B/H operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at 145 V), while thermal resistance (RθJA = 100 °C/W) supports operation up to +150 °C junction temperature under defined PCB pad conditions.
It conforms to IEC 61000-4-2 (ESD) and IEC 61000-4-5 (surge) immunity requirements when applied with appropriate layout - including 0.2" × 0.2" copper pads per terminal - and meets J-STD-020 MSL Level 1 reflow profile (peak 260 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 145 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 162–179 V at 1.0 mA - Verified avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping) | 234 V at IPPM = 2.6 A - Peak voltage seen by protected circuit during 10/1000 μs surge; determines stress on downstream components. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 μs waveform; enables robust protection against lightning-induced surges and inductive switching spikes. |
| IPPM | 2.6 A - Maximum non-repetitive peak pulse current; sets minimum trace width and PCB copper area requirements for safe energy dissipation. |
| TJ max. | +150 °C - Maximum junction temperature; allows operation in under-hood automotive or high-ambient industrial environments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Bidirectional terminals - either lead serves as anode or cathode depending on transient polarity; no band marking required. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables protection against severe 10/1000 μs surges (e.g., ISO 7637-2 Pulse 1/2b/5a) without thermal runaway on standard FR-4 PCBs. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage stress on protected ICs - critical for 3.3 V or 5 V logic interfacing with 12 V/24 V supply rails. |
| AEC-Q101 qualified (HE3_B suffix) | Validated for automotive applications including engine control units, body electronics, and ADAS sensor modules requiring long-term field reliability. |
| MSL Level 1, 260 °C peak reflow | Supports standard SMT assembly without baking or special handling; compatible with automated pick-and-place and reflow processes. |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage drift over temperature and lifetime - essential for precision sensor front-ends. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt transients before reaching interface ICs. Use Value: Maintains signal integrity under ISO 16750-2 load dump (up to 120 V) and IEC 61000-4-2 ±8 kV contact discharge without latch-up or degradation. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on each input channel, coordinated with series current-limiting resistor and optocoupler isolation. Use Value: Limits transient voltage to <234 V during 1 kV/500 A surge (IEC 61000-4-5), preventing false triggering and component damage in harsh factory environments. |
| Telecom Power Line Protection | Consumer Appliance Motor Control |
|
Use Scenario: Shielding PoE-powered Ethernet PHYs and DC-DC converters from induced surges on 48 V power pairs in outdoor telecom cabinets. IC Role / Device Role / Timing Role: Secondary surge suppression stage after gas discharge tube (GDT), providing fast-response clamping for residual transients. Use Value: Responds in <1 ns to clamp sub-microsecond ESD events while sustaining 600 W pulses - complementing slower primary protectors. |
Use Scenario: Protecting microcontroller GPIOs and gate drivers in washing machine motor inverters from commutation spikes generated by BLDC motors. IC Role / Device Role / Timing Role: Localized TVS across motor phase outputs and MCU signal lines to suppress <1 μs dv/dt spikes from PWM switching. Use Value: Prevents latch-up and gate oxide damage in 3.3 V MCUs and 600 V MOSFETs by limiting transient overshoot to ≤234 V during 2.6 A surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ170CA | Same VWM/VC ratings but lower PPPM (400 W); SMA package (smaller footprint, higher RθJA). | Limited to lower-energy transients; unsuitable for automotive load dump or industrial 1 kV surges. | Select only for space-constrained consumer designs where surge severity is validated below 400 W. |
| SMCJ170CA | Higher PPPM (1500 W); larger SMC (DO-214AB) package; same VWM/VC specs. | Overqualified for most 600 W use cases; requires larger PCB area and higher assembly cost. | Choose when system-level testing confirms need for >600 W margin or extended surge repetition rate. |
Compared with SMAJ170CA and SMCJ170CA, the P6SMB170CAHE3_B/H delivers optimal balance of 600 W surge capacity, SMB footprint compatibility, AEC-Q101 qualification, and production-ready MSL Level 1 handling - making it the preferred choice for volume automotive and industrial designs requiring validated reliability and manufacturability.
Availability
P6SMB170CAHE3_B/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom power interfaces, and consumer appliance motor controllers requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB170CAHE3_B/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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The P6SMB Series targets board-level transient suppression in automotive, industrial, and telecom systems - engineered for high surge robustness, AEC-Q101 compliance, and seamless SMT integration without derating penalties.
FAQ
What is the clamping voltage of P6SMB170CAHE3_B/H at its rated peak pulse current?
The P6SMB170CAHE3_B/H has a maximum clamping voltage (VC) of 234 V at 2.6 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured under standardized test conditions per JEDEC standards and defines the upper voltage limit imposed on protected circuits during surge events. The P6SMB170CAHE3_B/H maintains this clamping performance across its specified operating temperature range and is validated per AEC-Q101 stress tests.
Is P6SMB170CAHE3_B/H unidirectional or bidirectional, and how is polarity identified?
P6SMB170CAHE3_B/H is a bidirectional TVS diode, meaning it provides symmetrical clamping for positive and negative transients without polarity dependence. As stated in the Vishay datasheet, bidirectional types like the P6SMB170CAHE3_B/H have no cathode band or marking - both terminals are functionally identical. This eliminates orientation errors during automated placement and simplifies layout for AC-coupled or differential signal lines.
Does P6SMB170CAHE3_B/H meet automotive qualification standards?
Yes, P6SMB170CAHE3_B/H is AEC-Q101 qualified, as confirmed by the "HE3_B" suffix in its ordering code and documented in Vishay's official datasheet revision 09-Jan-2024. This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD - validating its suitability for under-hood and body-control module applications in passenger vehicles and commercial vehicles.
What is the thermal resistance and maximum junction temperature for P6SMB170CAHE3_B/H?
The P6SMB170CAHE3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal, and a maximum junction temperature (TJ) of +150 °C. These values define its safe operating area under pulsed conditions and confirm compatibility with automotive under-hood ambient temperatures up to +125 °C when properly heatsinked via PCB copper.
How does the P6SMB170CAHE3_B/H compare to the P6SMB170A variant?
The P6SMB170CAHE3_B/H is the bidirectional, AEC-Q101 qualified version with HE3_B packaging, whereas P6SMB170A is unidirectional and commercial-grade. Key differences include polarity marking (cathode band on P6SMB170A), absence of AEC-Q101 validation, and different suffix coding. The P6SMB170CAHE3_B/H is not a drop-in replacement for P6SMB170A due to functional asymmetry - bidirectional clamping cannot substitute for unidirectional DC blocking where required.
P6SMB170CAHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 145V
- Voltage - Breakdown (Min):
- 162V
- Voltage - Clamping (Max) @ Ipp:
- 234V
- Current - Peak Pulse (10/1000µs):
- 2.6A
- 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)
P6SMB170CAHE3_B/H FAQ
1.How can I place an order for P6SMB170CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB170CAHE3_B/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 P6SMB170CAHE3_B/H reliable?
The price and inventory of P6SMB170CAHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB170CAHE3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB170CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB170CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB170CAHE3_B/H?
P6SMB170CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB170CAHE3_B/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 P6SMB170CAHE3_B/H?
For technical support, including P6SMB170CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB170CAHE3_B/H requirements.
6.How does Aetrix verify that P6SMB170CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB170CAHE3_B/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 P6SMB170CAHE3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB170CAHE3_B/H?
All P6SMB170CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB170CAHE3_B/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 P6SMB170CAHE3_B/H part is unused and in its original packaging.
Return procedure for P6SMB170CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB170CAHE3_B/H Tags
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