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Vishay General Semiconductor - Diodes Division P6SMB170CAHM3/I
- Part No.:
- P6SMB170CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB170CAHM3/I.pdf
- Description:
- TVS DIODE 145VWM 234VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,518
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Product details
Overview
P6SMB170CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on signal or power lines. It features a 170 V standoff voltage (VWM), 234 V maximum clamping voltage (VC) at 2.6 A peak pulse current (IPPM), and 600 W peak pulse power capability with a 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and automotive electronics.
For engineers reviewing the P6SMB170CAHM3/I datasheet, P6SMB170CAHM3/I pinout, P6SMB170CAHM3/I application, or P6SMB170CAHM3/I equivalent, key selection criteria include bidirectional clamping behavior, SMB (DO-214AA) package compatibility, AEC-Q101 qualification status, and thermal resistance (RθJA = 100 °C/W) for board-level transient suppression design.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with breakdown voltage (VBR) specified at 162–179 V (min/max) under 1 mA test current. Its low incremental surge resistance enables fast response to ESD and lightning-induced surges while maintaining stable clamping performance up to 150 °C junction temperature.
The device uses a glass-passivated silicon junction and is qualified to AEC-Q101 for automotive applications. It meets J-STD-020 MSL Level 1, supports lead-free reflow up to 260 °C peak, and exhibits a temperature coefficient of VBR at +0.108 %/°C - critical for thermal stability in high-temperature environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 145 V - maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown |
| VBR (Breakdown Voltage) | 162–179 V at IT = 1 mA - precise voltage threshold where avalanche conduction initiates in both directions |
| VC (Clamping Voltage) | 234 V at IPPM = 2.6 A - peak voltage seen by protected circuit during 10/1000 μs transient; determines stress on downstream components |
| PPPM (Peak Pulse Power) | 600 W - energy-handling capacity for standardized 10/1000 μs surge; validates robustness against IEC 61000-4-5 level 4 events |
| RθJA | 100 °C/W - thermal resistance from junction to ambient; informs PCB copper pad sizing (0.2" × 0.2") for thermal derating above 25 °C |
| TJ max. | +150 °C - maximum allowable junction temperature; enables operation in under-hood automotive or industrial control enclosures |
| AEC-Q101 Qualified | Yes - certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H). Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per datasheet recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; common terminal in bidirectional configuration | No polarity marking on device body; terminals are functionally symmetric for AC transient suppression |
| Cathode | Current exit point in forward bias; common terminal in bidirectional configuration | Identical electrical role to Anode; bidirectional operation means either terminal serves as cathode depending on transient polarity |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity concerns |
| 600 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-to-earth) in properly designed interfaces |
| AEC-Q101 qualification (HM3 suffix) | Validates reliability for automotive powertrain, body control, and ADAS sensor modules requiring zero-failure field performance |
| MSL Level 1, 260 °C peak reflow | Allows direct placement into standard lead-free SMT assembly processes without moisture sensitivity handling |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage exposure to protected ICs - critical for 3.3 V or 5 V logic interfacing with 12 V/24 V systems |
Applications
| Automotive Sensor Signal Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching transients in 12 V/24 V vehicle subsystems. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector interface to clamp ±170 V transients before they reach signal conditioning circuitry. Use Value: Prevents latch-up or permanent damage to precision op-amps and ADC front-ends while maintaining signal integrity below 234 V clamping threshold. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers exposed to motor drive noise and relay coil kickback. IC Role / Device Role / Timing Role: Fast-response transient suppressor mounted adjacent to input terminal block to shunt surge energy away from isolation amplifiers and microcontrollers. Use Value: Ensures uninterrupted operation during 1 kV/500 A surge events per IEC 61000-4-4, with no degradation after 1000+ pulses due to stable glass-passivated junction. |
| Telecom Line Interface Protection | Consumer Power Adapter ESD Shielding |
Use Scenario: Guarding Ethernet PHY magnetics and PoE injector circuits against lightning-induced surges on outdoor telecom links and building backbone cabling. IC Role / Device Role / Timing Role: Primary clamping device on secondary side of isolation transformers, coordinated with GDTs or MOVs for multi-stage protection. Use Value: Limits induced voltage to <234 V within 1 ns response time, preserving Ethernet compliance and preventing PHY IC reset or damage. |
Use Scenario: Suppressing ESD events (>15 kV contact discharge) on USB-C and barrel jack inputs of wall adapters and battery chargers. IC Role / Device Role / Timing Role: Final-stage TVS on DC input path, placed before primary-side controller IC to absorb fast-rising human-body-model discharges. Use Value: Achieves >30 kV air discharge immunity per IEC 61000-4-2 without sacrificing efficiency - enabled by low leakage (<1 μA at 145 V) and minimal capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ170CA | Same VWM (145 V), VC = 249 V at 2.4 A; lower PPPM (400 W); SMA package (smaller footprint, higher RθJA) | Limited to lower-energy transients; unsuitable for AEC-Q101 automotive use | Select when space-constrained layouts prioritize size over automotive qualification and 600 W surge rating |
| 1.5KE170CA | Higher VWM (145 V), same VC (234 V), but through-hole DO-201 package; 1500 W PPPM rating | Requires PCB real estate for axial leads; better for high-reliability industrial mains protection | Choose for legacy through-hole designs or where higher pulse energy handling justifies larger mounting area |
Compared with SMAJ170CA and 1.5KE170CA, P6SMB170CAHM3/I uniquely combines AEC-Q101 qualification, 600 W surface-mount surge capability, and SMB footprint - making it optimal for new automotive and space-constrained industrial designs requiring validated reliability and standardized SMT assembly.
Availability
P6SMB170CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, telecom line interfaces, and consumer power adapter designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB170CAHM3/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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The P6SMB series was engineered for high-energy transient suppression in automotive, industrial, and telecom applications - delivering consistent clamping performance, AEC-Q101 compliance, and robust SMT manufacturability in the SMB package.
FAQ
What is the clamping voltage of P6SMB170CAHM3/I at its rated peak pulse current?
The P6SMB170CAHM3/I has a maximum clamping voltage (VC) of 234 V when subjected to its rated peak pulse current (IPPM) of 2.6 A using the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88370 and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is P6SMB170CAHM3/I suitable for automotive applications?
Yes, P6SMB170CAHM3/I is AEC-Q101 qualified (indicated by the HM3 suffix), meaning it has passed rigorous stress tests including temperature cycling, high-temperature reverse bias, and ESD verification required for automotive electronic modules. Its 150 °C maximum junction temperature and MSL Level 1 rating further support use in engine control units, body electronics, and ADAS sensor interfaces.
How does the bidirectional nature of P6SMB170CAHM3/I affect its PCB layout?
The bidirectional design of P6SMB170CAHM3/I eliminates polarity marking - both terminals are electrically identical, so no orientation check is needed during automated placement. Layout requires symmetric 0.2" × 0.2" copper pads per terminal (per datasheet Fig. 6), with no cathode band alignment concern, simplifying routing for differential or AC-coupled signal lines.
What is the thermal resistance of P6SMB170CAHM3/I, and how does it impact board design?
P6SMB170CAHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads. This value dictates thermal derating above 25 °C ambient: at 85 °C ambient, its 5.0 W steady-state power dissipation drops to ~2.9 W. Designers must maintain recommended pad size and avoid excessive copper removal near the SMB footprint to sustain rated surge performance.
Does P6SMB170CAHM3/I meet RoHS and halogen-free requirements?
Yes, P6SMB170CAHM3/I carries the HM3 suffix, confirming it is halogen-free and RoHS-compliant per EU Directive 2011/65/EU and Vishay's material declaration Doc. #99912. The device uses matte tin-plated leads solderable per J-STD-002 and passes JESD201 Class 2 whisker testing - satisfying environmental and reliability requirements for global commercial and automotive production.
P6SMB170CAHM3/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:
- -
- 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)
P6SMB170CAHM3/I FAQ
1.How can I place an order for P6SMB170CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB170CAHM3/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 P6SMB170CAHM3/I reliable?
The price and inventory of P6SMB170CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB170CAHM3/I is usually 5 days.
3.What payment methods are accepted for P6SMB170CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB170CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB170CAHM3/I?
P6SMB170CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB170CAHM3/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 P6SMB170CAHM3/I?
For technical support, including P6SMB170CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB170CAHM3/I requirements.
6.How does Aetrix verify that P6SMB170CAHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB170CAHM3/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 P6SMB170CAHM3/I meets industry standards.
7.What is the process for return or replacement of P6SMB170CAHM3/I?
All P6SMB170CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB170CAHM3/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 P6SMB170CAHM3/I part is unused and in its original packaging.
Return procedure for P6SMB170CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB170CAHM3/I Tags
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