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Vishay General Semiconductor - Diodes Division P6SMB170CAHM3_A/H
- Part No.:
- P6SMB170CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB170CAHM3_A/H.pdf
- Description:
- TVS DIODE 145VWM 234VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,640
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Product details
Overview
P6SMB170CAHM3_A/H 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), 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) capability with a 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P6SMB170CAHM3_A/H datasheet, P6SMB170CAHM3_A/H pinout, P6SMB170CAHM3_A/H application, or P6SMB170CAHM3_A/H equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification status, SMB (DO-214AA) package compatibility, thermal resistance (RθJA = 100 °C/W), and compliance with J-STD-020 MSL level 1 reflow profile.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while the low incremental surge resistance supports rapid energy dissipation during transient events.
The device is rated for repetitive 10/1000 μs surges at 0.01 % duty cycle and derates linearly above 25 °C ambient per Figure 2. With a maximum junction temperature of +150 °C and thermal resistance of 20 °C/W junction-to-lead, it maintains robust performance under sustained surge conditions when mounted on recommended 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 171 V - Maximum continuous reverse voltage before clamping begins; defines operating margin below breakdown. |
| VBR (Breakdown Voltage) | 162–179 V at 1.0 mA test current - Ensures predictable turn-on threshold across production lot. |
| VC (Clamping Voltage) | 234 V at IPPM = 2.6 A - Limits peak voltage seen by protected circuit during worst-case transient. |
| PPPM (Peak Pulse Power) | 600 W with 10/1000 μs waveform - Sustains high-energy surges typical of inductive switching or ESD. |
| ID (Reverse Leakage) | ≤1.0 μA at VWM - Minimizes standby power loss and avoids false triggering in high-impedance circuits. |
| TJ max. | +150 °C - Enables use in under-hood automotive or industrial environments with elevated ambient temperatures. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node in bidirectional configuration | No polarity marking required; symmetrical conduction enables AC line protection without orientation constraints. |
| Cathode | Current exit terminal in forward bias; common node in bidirectional configuration | Identical electrical role to Anode in bidirectional operation; terminals are functionally interchangeable. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of differential signals, AC power rails, or ungrounded interfaces without polarity concerns. |
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor modules per stress test requirements. |
| 600 W peak pulse power | Handles IEC 61000-4-5 Level 4 surge events (4 kV line-earth, 2 kV line-line) with margin when properly mounted. |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C peak without preconditioning; eliminates moisture sensitivity handling overhead. |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage drift over temperature and lifetime versus epoxy-passivated alternatives. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pair or supply rail to limit transient excursions. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V interface ICs during 12 V system load dump events (up to 35 V, 400 ms). |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive kickback from solenoids and relays. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor on 24 V DC input lines to shunt surge energy before reaching optocoupler or microcontroller GPIO. Use Value: Maintains signal integrity during repeated 100 V/1 A inductive spikes without degrading response time or increasing system downtime. |
| Telecom Line Interface | Consumer Appliance Motor Control |
|
Use Scenario: Shielding Ethernet PHYs and DSL line drivers from lightning-induced surges on outdoor-facing ports. IC Role / Device Role / Timing Role: First-stage clamping device ahead of gas discharge tube (GDT) or secondary TVS in hybrid protection architecture. Use Value: Responds within <1 ns to limit voltage to ≤234 V before GDT fires, reducing let-through energy to downstream silicon. |
Use Scenario: Suppressing commutation spikes generated by brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Mounted across motor terminals or H-bridge outputs to clamp flyback voltages exceeding 171 V. Use Value: Extends lifespan of MOSFET half-bridges by limiting VDS stress during PWM switching transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170CA | Same VWM/VBR/VC ratings but rated for 600 W with 8.3 ms sine-wave surge (IFSM = 100 A); lacks AEC-Q101 qualification. | Preferred for commercial-grade industrial power supplies where automotive qualification is not required. | Select SMBJ170CA if AEC-Q101 is unnecessary and higher single-pulse surge tolerance is needed. |
| 1.5KE170CA | Through-hole DO-15 package; identical electrical specs but higher RθJA (75 °C/W vs. 100 °C/W) and larger PCB footprint. | Suitable for legacy designs or prototyping where manual assembly or socketing is preferred over SMT. | Choose 1.5KE170CA only when board space allows through-hole mounting and reflow compatibility is not required. |
Compared with SMBJ170CA and 1.5KE170CA, P6SMB170CAHM3_A/H provides AEC-Q101 qualification and optimized SMB footprint for automated manufacturing, while maintaining identical clamping performance - making it the preferred choice for new automotive and high-reliability SMT designs.
Availability
P6SMB170CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom line interfaces, and consumer appliance motor controls requiring stable component supply and AEC-Q101-compliant surge protection.
Supply support for P6SMB170CAHM3_A/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 passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB series targets cost-sensitive, high-volume transient protection needs in automotive, industrial, and communications systems - delivering standardized TVS performance in compact SMB packages with AEC-Q101 variants for mission-critical deployment.
FAQ
What is the clamping voltage of P6SMB170CAHM3_A/H at its rated peak pulse current?
The P6SMB170CAHM3_A/H has a maximum clamping voltage (VC) of 234 V at a peak pulse current (IPPM) of 2.6 A with a 10/1000 μs waveform. This value is measured under standardized test conditions per JEDEC standards and reflects the upper limit of voltage imposed on protected circuitry during transient events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is P6SMB170CAHM3_A/H suitable for automotive applications?
Yes, P6SMB170CAHM3_A/H is AEC-Q101 qualified, as indicated by the "HM3" suffix denoting halogen-free, RoHS-compliant, and automotive-grade construction. It undergoes stress testing for temperature cycling, humidity, mechanical shock, and high-temperature operating life - making it appropriate for under-hood and cabin-mounted electronic control units per ISO/TS 16949 requirements.
What does the "CA" suffix mean in P6SMB170CAHM3_A/H?
The "CA" suffix in P6SMB170CAHM3_A/H designates a bidirectional configuration, meaning the device clamps voltage transients equally in both polarities. Unlike unidirectional variants (e.g., P6SMB170AHM3_A/H), this version has no cathode marking and functions identically regardless of terminal orientation - ideal for protecting AC-coupled or floating signal lines.
How does the SMB package of P6SMB170CAHM3_A/H compare to SMA or SMC in terms of power handling?
The SMB (DO-214AA) package used in P6SMB170CAHM3_A/H supports 600 W peak pulse power but offers lower thermal mass than SMC (DO-214AB) and higher power density than SMA (DO-214AC). Its RθJA of 100 °C/W requires adherence to Vishay's recommended 5.0 mm × 5.0 mm copper pad layout to achieve full rating - unlike SMC which achieves similar power with less stringent layout.
Can P6SMB170CAHM3_A/H replace P6SMB170A in an existing design?
No - P6SMB170CAHM3_A/H is bidirectional, whereas P6SMB170A is unidirectional. Substituting them without circuit review risks improper clamping on negative-going transients or forward conduction during normal operation. The "CA" and "A" suffixes denote fundamentally different internal structures and must be selected based on signal polarity requirements.
P6SMB170CAHM3_A/H 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/H FAQ
1.How can I place an order for P6SMB170CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB170CAHM3_A/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 P6SMB170CAHM3_A/H reliable?
The price and inventory of P6SMB170CAHM3_A/H 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/H is usually 5 days.
3.What payment methods are accepted for P6SMB170CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB170CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB170CAHM3_A/H?
P6SMB170CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB170CAHM3_A/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 P6SMB170CAHM3_A/H?
For technical support, including P6SMB170CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB170CAHM3_A/H requirements.
6.How does Aetrix verify that P6SMB170CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB170CAHM3_A/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 P6SMB170CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB170CAHM3_A/H?
All P6SMB170CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB170CAHM3_A/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 P6SMB170CAHM3_A/H part is unused and in its original packaging.
Return procedure for P6SMB170CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB170CAHM3_A/H Tags
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