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Vishay General Semiconductor - Diodes Division P6SMB170CAHE3_B/I
- Part No.:
- P6SMB170CAHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB170CAHE3_B/I.pdf
- Description:
- 600W,170V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,179
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Product details
Overview
P6SMB170CAHE3_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 170 V standoff voltage (VWM), 189 V minimum breakdown voltage (VBR), 234 V maximum clamping voltage (VC) at 2.6 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P6SMB170CAHE3_B/I datasheet, P6SMB170CAHE3_B/I pinout, P6SMB170CAHE3_B/I application, or P6SMB170CAHE3_B/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This device operates as a voltage-clamping protector in both polarities, leveraging an avalanche breakdown mechanism to divert transient energy away from downstream circuitry. Its bidirectional symmetry ensures identical electrical behavior regardless of polarity reversal, eliminating need for orientation-sensitive layout.
Designed for repetitive surge events at 0.01% duty cycle, it sustains 600 W peak pulse power under standardized 10/1000 μs waveform while maintaining clamping voltage ≤234 V at rated IPPM. Thermal performance is characterized by 100 °C/W junction-to-ambient thermal resistance (RθJA) and 20 °C/W junction-to-lead (RθJL), enabling reliable operation up to TJ = 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 170 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 189–209 V at 1 mA - Guaranteed avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 234 V at IPPM = 2.6 A - Peak voltage seen by protected circuit during worst-case 10/1000 μs transient; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Maximum transient energy dissipation capability under standard 10/1000 μs waveform; validates robustness against lightning or ESD surges. |
| ID (Reverse Leakage) | 1.0 μA at VWM - Negligible leakage current at rated standoff voltage; avoids DC loading or battery drain in always-on systems. |
| TJ max. | 150 °C - Maximum allowable junction temperature; supports operation in under-hood automotive or high-ambient industrial environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per JESD22 standards. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability requirements. Molding compound meets UL 94 V-0 flammability rating. No polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (bidirectional) | Accepts surge current in either polarity; connects to line being protected (e.g., CAN_H or RS-485 A). |
| Cathode | Transient current exit point (bidirectional) | Completes clamping path to ground or reference rail; symmetric role with Anode due to bidirectional construction. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines (e.g., USB D+/D−, RS-485) without polarity concerns. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surge (4 kV, 2 Ω source) when mounted per recommended 0.2" × 0.2" copper pads. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring extended temperature and lifetime reliability. |
| Low profile SMB package | 0.130" × 0.205" footprint enables dense PCB layouts; compatible with standard SMT pick-and-place equipment and reflow profiles. |
| Glass passivated junction | Improves long-term stability and moisture resistance versus epoxy-passivated alternatives, critical for harsh-environment deployments. |
Applications
| Automotive Sensor Interface Protection | Industrial RS-485 Communication Line |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤234 V during 100 V/50 ms load dump events, preventing ADC saturation and latch-up. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers in factory automation PLCs subjected to EFT and surge coupling from motor drives. IC Role / Device Role / Timing Role: Line-side TVS on A/B differential pair, referenced to local ground plane. Use Value: Clamps common-mode surges up to 600 W without degrading signal integrity at 10 Mbps data rates. |
| Consumer USB Port ESD Protection | Telecom DSL Line Surge Suppression |
Use Scenario: Secondary-level ESD protection on USB 2.0 upstream ports in set-top boxes and smart displays. IC Role / Device Role / Timing Role: Bidirectional shunt device across D+ and D− lines, downstream of primary polymer fuse. Use Value: Responds in <1 ps to ±15 kV contact discharge (IEC 61000-4-2), limiting voltage excursion to <234 V. |
Use Scenario: Front-end surge suppression on ADSL/VDSL line cards handling POTS/DSL coexistence in telecom cabinets. IC Role / Device Role / Timing Role: Primary protector on tip/ring pair before transformer coupling and line driver IC. Use Value: Handles longitudinal surges per ITU-T K.20/K.21 with 234 V clamping, preserving transformer insulation and codec linearity. |
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 (170 V), lower PPPM (400 W), SMA package (larger footprint, higher RθJA = 140 °C/W) | Limited to lower-energy transients; less suitable for automotive load dump where 600 W margin is required. | Choose if cost sensitivity outweighs power handling needs and board space allows SMA. |
| 1.5KE170CA | Through-hole DO-201 package, same VWM/VC specs, but 1.5 kW PPPM and higher capacitance (~100 pF vs. ~30 pF) | Better for high-energy surges but incompatible with SMT-only assembly; higher junction capacitance may distort >10 MHz signals. | Select only for legacy through-hole designs or where extreme surge energy dominates signal bandwidth concerns. |
Compared with SMAJ170CA and 1.5KE170CA, P6SMB170CAHE3_B/I uniquely balances 600 W surge capability, AEC-Q101 qualification, SMB footprint, and low capacitance - making it optimal for modern SMT-based automotive and industrial communication interfaces requiring validated reliability and space efficiency.
Availability
P6SMB170CAHE3_B/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial RS-485 networks, and consumer USB port hardening requiring stable component supply across production lifecycles.
Supply support for P6SMB170CAHE3_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 passive components with emphasis on high-reliability and automotive-grade solutions.
The P6SMB Series targets high-power transient suppression in space-constrained applications, with design focus on AEC-Q101 compliance, automated manufacturability, and consistent clamping performance across temperature and surge repetition rates.
FAQ
What does the "CA" suffix indicate in P6SMB170CAHE3_B/I?
The "CA" suffix denotes a bidirectional configuration - meaning P6SMB170CAHE3_B/I provides symmetrical clamping in both polarities, unlike unidirectional variants (e.g., P6SMB170A). This eliminates polarity marking requirements and simplifies layout for AC-coupled or differential signal lines such as RS-485 or CAN bus, where voltage transients can occur with either polarity relative to ground.
Is P6SMB170CAHE3_B/I suitable for automotive applications?
Yes, P6SMB170CAHE3_B/I is AEC-Q101 qualified (indicated by the "HE3_B" suffix), having passed stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing. It is explicitly rated for use in automotive subsystems such as body electronics, infotainment, and sensor interfaces where robustness against load dump, jump start, and ISO 7637-2 pulses is required.
What is the maximum clamping voltage of P6SMB170CAHE3_B/I and under what test condition?
The maximum clamping voltage (VC) of P6SMB170CAHE3_B/I is 234 V, measured at a peak pulse current (IPPM) of 2.6 A using the standardized 10/1000 μs double-exponential waveform. This value represents the worst-case voltage imposed on protected circuitry during a surge event and is guaranteed across the full operating temperature range (–65 °C to +150 °C).
How does the SMB (DO-214AA) package of P6SMB170CAHE3_B/I compare to SMA (DO-214AC) in thermal performance?
P6SMB170CAHE3_B/I in SMB package has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads - significantly lower than SMA-packaged equivalents (e.g., SMAJ170CA at 140 °C/W). This enables higher sustained power dissipation and improved reliability in thermally constrained layouts, especially in automotive under-hood or sealed industrial enclosures.
Does P6SMB170CAHE3_B/I require orientation during PCB placement?
No, P6SMB170CAHE3_B/I does not require specific orientation because it is a bidirectional TVS diode - its Anode and Cathode terminals are functionally symmetric. Unlike unidirectional TVS devices, there is no cathode band marking on the SMB package, and the device performs identically regardless of mounting direction, simplifying automated assembly and reducing placement errors.
P6SMB170CAHE3_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):
- 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/I FAQ
1.How can I place an order for P6SMB170CAHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB170CAHE3_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 P6SMB170CAHE3_B/I reliable?
The price and inventory of P6SMB170CAHE3_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 P6SMB170CAHE3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB170CAHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB170CAHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB170CAHE3_B/I?
P6SMB170CAHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB170CAHE3_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 P6SMB170CAHE3_B/I?
For technical support, including P6SMB170CAHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB170CAHE3_B/I requirements.
6.How does Aetrix verify that P6SMB170CAHE3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB170CAHE3_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 P6SMB170CAHE3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB170CAHE3_B/I?
All P6SMB170CAHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB170CAHE3_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 P6SMB170CAHE3_B/I part is unused and in its original packaging.
Return procedure for P6SMB170CAHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB170CAHE3_B/I Tags
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