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Vishay General Semiconductor - Diodes Division P6SMB170CAHM3_A/I
- Part No.:
- P6SMB170CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB170CAHM3_A/I.pdf
- Description:
- TVS DIODE 145VWM 234VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,384
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Product details
Overview
P6SMB170CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 170 V standoff voltage (VWM), 234 V clamping voltage (VC) at 2.6 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 μs waveform. It protects signal lines and power rails in automotive sensor units, industrial I/O interfaces, and telecom surge-prone circuits.
For engineers reviewing the P6SMB170CAHM3_A/I datasheet, P6SMB170CAHM3_A/I pinout, P6SMB170CAHM3_A/I application, or P6SMB170CAHM3_A/I equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification status, MSL Level 1 moisture sensitivity, 150 °C max junction temperature, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This device operates as a voltage-clamped transient protector: during overvoltage events, it avalanches symmetrically in both directions to limit voltage across protected circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM).
Designed for repetitive surge suppression, it sustains 600 W peak pulse power under 0.01% duty cycle (10/1000 μs waveform), with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling reliable operation up to 150 °C junction temperature without derating on standard PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 145 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 162–179 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 234 V at IPPM = 2.6 A - Peak voltage seen by protected circuit during worst-case 10/1000 μs surge; determines system-level overvoltage margin. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy-handling capability per IEEE 587/IEC 61000-4-5 Level 4 surges without degradation. |
| TJ max. | 150 °C - Maximum allowable junction temperature; supports operation in under-hood automotive and industrial ambient environments. |
| MSL Level | Level 1 per J-STD-020 - No floor life limitation; compatible with standard reflow profiles up to 260 °C peak. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated terminals solderable per J-STD-002 and JESD 22-B102. Polarity: unmarked bidirectional device - symmetrical terminal function.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals serve identical roles; no polarity dependency - enables direct placement across differential or AC-coupled lines without orientation check. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC signal paths, RS-485 buses, and transformer-coupled interfaces without external polarity management. |
| 600 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial and automotive equipment. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control modules, ADAS sensors, and body electronics. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a), improving protection fidelity. |
| MSL Level 1, 260 °C reflow compatible | Eliminates bake-out requirement and supports high-throughput SMT assembly with standard lead-free reflow profiles. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to shunt surge energy before reaching PHY or MCU I/O pins. Use Value: Maintains signal integrity under ISO 16750-2 load dump (12 V systems) and ISO 7637-2 pulse 5a (75 V/300 ms), preventing latch-up or permanent damage to AEC-Q100 qualified ICs. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers (e.g., SN65HVD230) in factory automation PLCs exposed to motor drive noise and ground bounce. IC Role / Device Role / Timing Role: Differential-line TVS mounted across A/B bus lines to suppress common-mode surges while preserving data eye integrity at 10 Mbps. Use Value: Limits clamped voltage to ≤234 V during 1 kV/42 Ω IEC 61000-4-5 surges, keeping transceiver inputs within absolute maximum ratings and avoiding false triggering. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Control |
Use Scenario: Front-end protection for DSL/VDSL line interface units (LIUs) subjected to lightning-induced surges on twisted-pair copper lines. IC Role / Device Role / Timing Role: Primary bidirectional clamp on tip/ring pair upstream of hybrid transformer and line driver ICs. Use Value: Absorbs up to 600 W transient energy per line pair without failure, meeting GR-1089-CORE Level 3 telecom surge standards while maintaining <1.0 μA leakage at 145 V DC bias. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, washing machines) connected to microcontroller GPIOs. IC Role / Device Role / Timing Role: Localized TVS across motor terminals and MCU input pins monitoring hall-effect feedback or current sense signals. Use Value: Clamps 100 V+ inductive kickback within nanoseconds, preventing MCU reset or ADC corruption while supporting continuous 150 °C junction operation near hot motor housings. |
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 | Lower peak pulse power (400 W), same VWM/VC range, SMA package (smaller footprint, higher RθJA = 150 °C/W) | Not AEC-Q101 qualified; limited to commercial-grade consumer/industrial use where space constraints outweigh power handling needs | Select when board area is critical and surge threat level is ≤IEC 61000-4-5 Level 3. |
| 1.5KE170CA | Higher PPPM (1500 W), axial-leaded DO-201 package, slower response due to higher parasitic inductance | Requires through-hole assembly; unsuitable for high-speed signal lines or automated SMT production | Choose only for legacy designs or high-energy AC mains protection where leaded mounting is acceptable. |
Compared with SMAJ170CA and 1.5KE170CA, P6SMB170CAHM3_A/I uniquely balances 600 W surge capacity, AEC-Q101 qualification, SMB surface-mount compatibility, and MSL Level 1 process readiness - making it optimal for new automotive and industrial SMT designs requiring validated reliability and production scalability.
Availability
P6SMB170CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial RS-485 interface hardening, and telecom line card surge suppression requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for P6SMB170CAHM3_A/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 high-reliability, automotive-qualified, and industry-standard solutions.
The P6SMB Series targets robust transient suppression in space-constrained, high-volume SMT applications - specifically engineered for automotive, industrial, and telecom systems needing AEC-Q101 compliance, 600 W surge rating, and seamless integration into automated assembly lines.
FAQ
What does the "CA" suffix indicate in P6SMB170CAHM3_A/I?
The "CA" suffix denotes a bidirectional configuration: P6SMB170CAHM3_A/I clamps voltage symmetrically in both polarities, making it suitable for AC-coupled or differential signal lines like RS-485, CAN, or telecom tip/ring pairs. Unlike unidirectional variants (e.g., P6SMB170A), it has no cathode marking and identical electrical behavior regardless of terminal orientation.
Is P6SMB170CAHM3_A/I qualified for automotive applications?
Yes, P6SMB170CAHM3_A/I is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's P6SMB series datasheet (Rev. 09-Jan-2024). This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD), validating its suitability for under-hood and chassis-mounted automotive electronics.
What is the clamping voltage of P6SMB170CAHM3_A/I at its rated peak pulse current?
P6SMB170CAHM3_A/I has a maximum clamping voltage (VC) of 234 V at its rated peak pulse current (IPPM) of 2.6 A, measured using the standardized 10/1000 μs double-exponential surge waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
How does the SMB (DO-214AA) package of P6SMB170CAHM3_A/I compare to SMA or SMC packages in terms of thermal performance?
The SMB package of P6SMB170CAHM3_A/I offers a thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), striking a balance between compact size and heat dissipation. It delivers better thermal performance than SMA (RθJA ≈ 150 °C/W) but less than SMC (RθJA ≈ 60 °C/W), making it ideal for medium-power surge protection where board space and manufacturability are prioritized.
What is the maximum reverse leakage current of P6SMB170CAHM3_A/I at its stand-off voltage?
At its maximum stand-off voltage (VWM) of 145 V, P6SMB170CAHM3_A/I exhibits a maximum reverse leakage current (ID) of 1.0 μA at 25 °C, as specified in the Vishay P6SMB datasheet. This low leakage ensures minimal power loss and signal distortion in high-impedance sensing or battery-powered circuits.
P6SMB170CAHM3_A/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:
- Obsolete
- 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_A/I FAQ
1.How can I place an order for P6SMB170CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB170CAHM3_A/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_A/I reliable?
The price and inventory of P6SMB170CAHM3_A/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_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB170CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB170CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB170CAHM3_A/I?
P6SMB170CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB170CAHM3_A/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_A/I?
For technical support, including P6SMB170CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB170CAHM3_A/I requirements.
6.How does Aetrix verify that P6SMB170CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB170CAHM3_A/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_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB170CAHM3_A/I?
All P6SMB170CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB170CAHM3_A/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_A/I part is unused and in its original packaging.
Return procedure for P6SMB170CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB170CAHM3_A/I Tags
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