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Vishay General Semiconductor - Diodes Division P6SMB170CAHM3/H
- Part No.:
- P6SMB170CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB170CAHM3/H.pdf
- Description:
- TVS DIODE 145VWM 234VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,231
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Product details
Overview
P6SMB170CAHM3/H 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 (10/1000 μs waveform). It protects signal lines and power rails in automotive sensor units, industrial I/O modules, and telecom interface circuits against ESD and inductive switching transients.
For engineers reviewing the P6SMB170CAHM3/H datasheet, P6SMB170CAHM3/H pinout, P6SMB170CAHM3/H application, or P6SMB170CAHM3/H equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, 150 °C maximum junction temperature, low incremental surge resistance, and halogen-free RoHS compliance per HM3 suffix.
Technical Context
This device operates as a voltage-clamped shunt protector with symmetrical breakdown behavior in both polarities, enabling robust transient suppression on AC-coupled or floating signal paths. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ns), critical for safeguarding high-speed analog inputs and digital interfaces.
The P6SMB170CAHM3/H is thermally optimized for surface-mount PCB layouts using 5.0 mm × 5.0 mm copper pads per terminal, delivering RθJA = 100 °C/W and RθJL = 20 °C/W. Its MSL Level 1 rating supports lead-free reflow up to 260 °C peak without preconditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 145 V - Maximum continuous reverse voltage before clamping begins; defines operating margin below breakdown. |
| VBR (Breakdown Voltage) | 162–179 V at 1.0 mA - Confirmed breakdown threshold range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 234 V at 2.6 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Sustains standardized 10/1000 μs surge without failure; validates robustness against lightning-induced or inductive kick transients. |
| IPPM (Peak Pulse Current) | 2.6 A - Maximum non-repetitive surge current handled at rated clamping voltage; sets minimum trace width and fuse coordination requirements. |
| TJmax | 150 °C - Enables operation in under-hood automotive or high-ambient industrial environments without thermal derating penalties. |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline with 0.220" × 0.130" footprint; compatible with automated pick-and-place and reflow processes. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink (negative polarity) | Provides low-impedance path to ground during negative transients; symmetric with cathode for bidirectional clamping. |
| Cathode | Transient current sink (positive polarity) | Provides low-impedance path to ground during positive transients; identical electrical behavior to anode due to bidirectional design. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - enables use in ADAS sensors and body control modules. |
| Halogen-free & RoHS-compliant (HM3) | Meets IEC 61249-2-21 and JEDEC J-STD-020 MSL Level 1 - supports green manufacturing and high-temperature lead-free assembly. |
| 600 W peak pulse power (10/1000 μs) | Withstands repetitive surges up to 0.01% duty cycle - suitable for protection of CAN, LIN, RS-485, and Ethernet PHY interfaces. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes voltage overshoot during clamping - reduces risk of latch-up or damage to 3.3 V/5 V logic and analog front-ends. |
| Glass passivated junction | Ensures stable leakage (<1.0 μA at VWM) and long-term parameter stability - critical for battery-powered or low-power sensor nodes. |
Applications
| Automotive Sensor Protection | Industrial I/O Module Protection |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control units and chassis modules. IC Role / Device Role / Timing Role: Bidirectional shunt TVS placed across sensor supply and signal lines to clamp ESD and load dump transients. Use Value: Prevents sensor signal corruption and microcontroller reset during ISO 10605 ±8 kV contact discharge events. |
Use Scenario: Safeguarding 24 V DC input terminals and fieldbus interfaces (RS-485, CAN) in programmable logic controllers and remote I/O racks. IC Role / Device Role / Timing Role: Primary overvoltage clamp on unregulated power rails and differential data lines exposed to industrial noise. Use Value: Maintains system uptime by absorbing 1 kV/500 A surge pulses per IEC 61000-4-5 Level 4 without degradation. |
| Telecom Interface Protection | Consumer Device Port Protection |
|
Use Scenario: Shielding Ethernet PHY ports, DSL line drivers, and PoE injectors from lightning-induced surges and hot-swap transients. IC Role / Device Role / Timing Role: Secondary-level TVS deployed after gas discharge tube (GDT) or polymer PTC in multi-stage protection schemes. Use Value: Limits residual clamping voltage to <250 V, ensuring safe operation of IEEE 802.3af/at compliant silicon. |
Use Scenario: Securing USB-C, HDMI, and audio jack connections in smart speakers, set-top boxes, and home automation hubs. IC Role / Device Role / Timing Role: Fast-response bidirectional suppressor placed directly at connector entry point to divert ESD energy. Use Value: Passes IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) while maintaining sub-1 pF junction capacitance for signal integrity. |
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 (145 V) and VC (234 V), but lower PPPM (400 W) and smaller SMA package (DO-214AC). | Limited to lower-energy transients; not rated for AEC-Q101 or MSL Level 1 reflow. | Select when cost or board space is prioritized over automotive qualification and 600 W surge handling. |
| 1.5KE170CA | Higher PPPM (1500 W), axial-leaded DO-201AE package, higher VC (274 V), no AEC-Q101 or halogen-free certification. | Suitable for high-energy primary protection but incompatible with SMT assembly and automotive thermal cycling requirements. | Choose only for through-hole prototyping or legacy designs where 600 W is insufficient and reflow compatibility is irrelevant. |
Compared with SMAJ170CA and 1.5KE170CA, the P6SMB170CAHM3/H uniquely combines AEC-Q101 qualification, halogen-free compliance, 600 W capability, and SMB footprint-making it the only drop-in solution for production automotive and industrial SMT designs requiring full regulatory alignment and surge margin.
Availability
P6SMB170CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor systems, industrial PLC I/O modules, telecom interface protection, and consumer port hardening requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for P6SMB170CAHM3/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific performance.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom applications, designed to meet stringent AEC-Q101, RoHS, and MSL requirements while delivering consistent clamping performance across temperature and lifetime.
FAQ
What does the "HM3" suffix indicate in P6SMB170CAHM3/H?
The "HM3" suffix in P6SMB170CAHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It confirms compliance with JEDEC J-STD-020 MSL Level 1, whisker resistance per JESD 201 Class 2, and suitability for automotive-grade production. The "H" indicates 7″ tape-and-reel packaging (750 units per reel), and the "/H" ending reinforces that packaging format. This makes P6SMB170CAHM3/H distinct from commercial-grade M3 or E3 variants.
Is P6SMB170CAHM3/H bidirectional, and how is polarity identified?
Yes, P6SMB170CAHM3/H is a bidirectional TVS diode - its electrical characteristics apply identically in both directions, with no cathode band or polarity marking on the SMB package. This symmetry allows placement across AC-coupled lines, differential buses (e.g., CAN, RS-485), or floating power domains without orientation concerns. Unlike unidirectional variants (e.g., P6SMB170A), the "CA" suffix explicitly confirms bidirectional functionality in P6SMB170CAHM3/H.
What is the clamping voltage of P6SMB170CAHM3/H at its rated peak pulse current?
The clamping voltage (VC) of P6SMB170CAHM3/H is 234 V measured at 2.6 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is guaranteed per Vishay's datasheet (Document Number: 88370, Rev. 09-Jan-2024) and reflects the maximum voltage imposed on the protected circuit during worst-case surge conditions. It directly informs system-level overvoltage margin calculations for downstream ICs.
Can P6SMB170CAHM3/H replace P6SMB170A in an existing design?
No - P6SMB170CAHM3/H cannot directly replace unidirectional P6SMB170A without circuit review. While both share the same VWM (145 V) and package, P6SMB170A is unidirectional (cathode-banded) and intended for DC rail protection, whereas P6SMB170CAHM3/H is bidirectional and lacks polarity marking. Substitution may cause improper clamping on asymmetric waveforms or violate layout assumptions. Always verify signal topology before interchanging CA and A variants.
What thermal derating applies to P6SMB170CAHM3/H above 25 °C ambient?
P6SMB170CAHM3/H follows Vishay's standard derating curve (Fig. 2 in datasheet 88370): its peak pulse power (PPPM) decreases linearly from 600 W at 25 °C to zero at 150 °C junction temperature. At 75 °C ambient (assuming typical PCB thermal resistance), usable PPPM drops to ~420 W. Designers must calculate actual TJ using RθJA = 100 °C/W and ensure continuous power dissipation (PD = 5.0 W) remains within limits under steady-state conditions.
P6SMB170CAHM3/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:
- 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/H FAQ
1.How can I place an order for P6SMB170CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB170CAHM3/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/H reliable?
The price and inventory of P6SMB170CAHM3/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/H is usually 5 days.
3.What payment methods are accepted for P6SMB170CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB170CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB170CAHM3/H?
P6SMB170CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB170CAHM3/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/H?
For technical support, including P6SMB170CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB170CAHM3/H requirements.
6.How does Aetrix verify that P6SMB170CAHM3/H is sourced from the original manufacturer or authorized distributors?
All P6SMB170CAHM3/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/H meets industry standards.
7.What is the process for return or replacement of P6SMB170CAHM3/H?
All P6SMB170CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB170CAHM3/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/H part is unused and in its original packaging.
Return procedure for P6SMB170CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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