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Vishay General Semiconductor - Diodes Division P6SMB170CAHM3_B/I
- Part No.:
- P6SMB170CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB170CAHM3_B/I.pdf
- Description:
- 600W,170V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,480
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Product details
Overview
P6SMB170CAHM3_B/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), 190 V minimum breakdown voltage (VBR), 600 W peak pulse power rating (10/1000 μs), and clamps to ≤234 V at 2.6 A peak pulse current - used in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the P6SMB170CAHM3_B/I datasheet, P6SMB170CAHM3_B/I pinout, P6SMB170CAHM3_B/I application, or P6SMB170CAHM3_B/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMB (DO-214AA) package compatibility, and compliance with IEC 61000-4-2/4-5 transient immunity requirements.
Technical Context
This TVS diode operates symmetrically in both directions, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while the low incremental surge resistance supports fast clamping response under high-dI/dt events.
The device is rated for 150 °C maximum junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its thermal resistance (RθJA = 100 °C/W) and RθJL = 20 °C/W enable reliable operation on standard PCB copper pads (0.2" × 0.2") without heatsinking in most applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 171 V - Maximum continuous reverse voltage before significant conduction begins; defines operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 190–209 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients above 171 V. |
| VC (Clamping Voltage) | 234 V at IPPM = 2.6 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; determines downstream component stress. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability for standardized 10/1000 μs waveform; validates robustness against lightning-induced surges. |
| ID (Reverse Leakage) | ≤1.0 μA at 171 V - Minimal standby current; avoids signal distortion or battery drain in always-on interfaces. |
| TJ max. | 150 °C - Enables use in under-hood automotive environments and industrial enclosures without derating below ambient 125 °C. |
| 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. Bidirectional construction means no polarity marking; both terminals are electrically symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Either terminal conducts during positive or negative overvoltage events; no DC bias dependency - suitable for AC lines and differential pairs. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, RS-485 buses, and ungrounded sensor outputs without external polarity management. |
| 600 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 Level 3 (1 kV line-to-line, 2 kV line-to-ground) surge immunity requirements for industrial equipment. |
| AEC-Q101 qualified (HM3_B/I suffix) | Validated for automotive applications including body control modules, ADAS sensor interfaces, and infotainment power rails. |
| Low clamping ratio (VC/VBR ≈ 1.23) | Minimizes overvoltage overshoot during fast transients, reducing risk of latch-up or gate oxide damage in protected ICs. |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements. |
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 ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across signal pair or supply rail to shunt surge energy before it reaches MCU or analog front-end. Use Value: Prevents permanent damage to 3.3 V/5 V sensor interface ICs during 12 V/24 V vehicle electrical system transients. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs and motor drives exposed to ground loop surges and EFT. IC Role / Device Role / Timing Role: Differential-mode TVS connected between A/B lines and common-mode TVS from each line to ground. Use Value: Maintains data integrity during 4 kV ESD contact discharge and 1 kV surge events without signal distortion or reset faults. |
| Consumer Appliance Power Input | Telecom Line Card Surge Protection |
|
Use Scenario: Secondary-side transient suppression on 12–24 V DC input rails of smart home hubs and HVAC controllers. IC Role / Device Role / Timing Role: Standoff-clamp TVS placed after bulk filter capacitor to absorb residual switching spikes and induced noise. Use Value: Eliminates need for additional MOVs or gas discharge tubes, reducing BOM count and board space in compact designs. |
Use Scenario: Front-end protection on DSL or POTS line cards handling AC ringing and lightning-induced longitudinal surges. IC Role / Device Role / Timing Role: Bidirectional TVS used in hybrid transformer coupling networks to limit common-mode overvoltage. Use Value: Ensures compliance with GR-1089-CORE telecom surge standards while preserving signal bandwidth up to 1 MHz. |
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/VBR/VC specs but lower PPPM (400 W), SMA package (smaller footprint, higher RθJA). | Limited to lower-energy transients; not AEC-Q101 qualified; unsuitable for automotive under-hood use. | Select when cost or board area is critical and surge threat level is ≤IEC 61000-4-5 Level 2. |
| 1.5KE170CA | Through-hole TO-218 package, same 170 V bidirectional rating, 1500 W PPPM, higher IFSM (200 A). | Requires manual or wave soldering; incompatible with automated SMT lines; larger board footprint. | Choose only for legacy through-hole designs or where >600 W surge margin is mandatory and layout allows axial leads. |
Compared with SMAJ170CA and 1.5KE170CA, P6SMB170CAHM3_B/I uniquely combines AEC-Q101 qualification, 600 W SMT-rated surge capacity, and SMB package compatibility - making it the optimal choice for new automotive and industrial SMT designs requiring validated reliability and production scalability.
Availability
P6SMB170CAHM3_B/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, consumer appliance power inputs, and telecom line card protection requiring stable component supply across extended product lifecycles.
Supply support for P6SMB170CAHM3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P6SMB Series is engineered for high-reliability transient suppression in automotive, industrial, and telecom systems - delivering consistent clamping behavior, AEC-Q101 validation, and robust surge handling in compact SMB packages.
FAQ
What does the "CA" suffix indicate in P6SMB170CAHM3_B/I?
The "CA" suffix denotes a bidirectional configuration - meaning P6SMB170CAHM3_B/I provides symmetrical clamping for both positive and negative voltage transients. This eliminates polarity concerns during placement and enables protection of AC-coupled lines, differential buses like RS-485, and ungrounded sensor outputs without external circuitry.
Is P6SMB170CAHM3_B/I suitable for automotive applications?
Yes - P6SMB170CAHM3_B/I carries the HM3_B/I suffix, confirming it is halogen-free, RoHS-compliant, and AEC-Q101 qualified. It has passed stress tests including temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101, making it approved for use in automotive body electronics, ADAS sensors, and infotainment power domains.
What is the clamping voltage of P6SMB170CAHM3_B/I at its rated peak pulse current?
P6SMB170CAHM3_B/I clamps to a maximum of 234 V at 2.6 A peak pulse current (IPPM), measured using the standard 10/1000 μs double-exponential waveform. This value is guaranteed per the Vishay datasheet and defines the upper voltage limit imposed on protected circuitry during surge events.
How does the SMB (DO-214AA) package of P6SMB170CAHM3_B/I compare to SMA or SMC alternatives?
The SMB package of P6SMB170CAHM3_B/I offers a balanced trade-off: larger than SMA (lower RθJA, higher power handling) but smaller than SMC (reduced board area). With RθJA = 100 °C/W and RθJL = 20 °C/W, it delivers better thermal performance than SMAJ-series parts while maintaining compatibility with standard 7" and 13" tape-and-reel SMT assembly lines.
Can P6SMB170CAHM3_B/I be used in place of unidirectional TVS diodes like P6SMB170A?
No - P6SMB170CAHM3_B/I is strictly bidirectional and lacks polarity marking; substituting it for a unidirectional part like P6SMB170A would compromise DC blocking capability in circuits requiring forward conduction control. Unidirectional variants include cathode band marking and specified forward voltage (VF = 3.5 V at 50 A), which P6SMB170CAHM3_B/I does not provide.
P6SMB170CAHM3_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)
P6SMB170CAHM3_B/I FAQ
1.How can I place an order for P6SMB170CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB170CAHM3_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 P6SMB170CAHM3_B/I reliable?
The price and inventory of P6SMB170CAHM3_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 P6SMB170CAHM3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB170CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB170CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB170CAHM3_B/I?
P6SMB170CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB170CAHM3_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 P6SMB170CAHM3_B/I?
For technical support, including P6SMB170CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB170CAHM3_B/I requirements.
6.How does Aetrix verify that P6SMB170CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB170CAHM3_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 P6SMB170CAHM3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB170CAHM3_B/I?
All P6SMB170CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB170CAHM3_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 P6SMB170CAHM3_B/I part is unused and in its original packaging.
Return procedure for P6SMB170CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB170CAHM3_B/I Tags
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