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Vishay General Semiconductor - Diodes Division P6SMB170CA-E3/52
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- Part No.:
- P6SMB170CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB170CA-E3/52.pdf
- Description:
- TVS DIODE 145VWM 234VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB170CA-E3/52 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 industrial sensor interfaces and automotive ECUs against ESD and inductive switching transients.
For engineers reviewing the P6SMB170CA-E3/52 datasheet, P6SMB170CA-E3/52 pinout, P6SMB170CA-E3/52 application, or P6SMB170CA-E3/52 equivalent, key selection criteria include bidirectional clamping capability, 170 V stand-off rating, 234 V max clamping at 2.6 A, RoHS-compliant matte tin terminations, and MSL Level 1 reflow compatibility up to 260 °C.
Technical Context
This TVS diode operates symmetrically in both directions due to its CA suffix designation, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at VWM), while the low incremental surge resistance supports consistent clamping under repetitive transient events.
The device complies with JEDEC J-STD-020 MSL Level 1 and withstands peak reflow temperatures of 260 °C, making it suitable for high-volume automated SMT assembly. Thermal resistance (RθJA = 100 °C/W) and junction temperature range (–65 °C to +150 °C) support operation in thermally constrained industrial and automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 171 V - Maximum continuous reverse voltage before clamping begins; defines operating margin for 12 V–48 V systems with safety headroom. |
| VBR (Breakdown) | 162–179 V at 1 mA - Tight 5% tolerance ensures predictable turn-on across production lots and temperature. |
| VC (Clamping) | 234 V at IPPM = 2.6 A - Limits transient voltage seen by downstream ICs during 10/1000 μs surges. |
| PPPM | 600 W - Sustains standardized lightning/surge immunity per IEC 61000-4-5 (Level 4) when mounted on 5 mm × 5 mm copper pads. |
| Leakage (ID) | <1.0 μA at 171 V - Negligible standby current impact on battery-powered sensor nodes or high-impedance analog inputs. |
| TJ max | +150 °C - Enables use in under-hood automotive modules and industrial enclosures without derating below 125 °C ambient. |
| Package | SMB (DO-214AA) - 3.94 mm × 2.20 mm footprint compatible with standard SMT pick-and-place and reflow profiles. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 3.94 mm × 2.20 mm × 1.75 mm (L × W × H); matte tin-plated leads, J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (reverse bias) | One terminal of symmetrical PN junction; accepts surge current in either direction during overvoltage events. |
| Cathode | Transient current exit (reverse bias) | Second terminal of symmetrical junction; completes low-impedance path to ground or rail during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), or ungrounded power rails without polarity constraints. |
| 600 W peak pulse power | Meets IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-earth) when PCB layout follows recommended 5 mm × 5 mm copper pads. |
| MSL Level 1 rating | Supports unlimited floor life and single-reflow processing at 260 °C peak, eliminating bake requirements for high-mix manufacturing. |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage drift over 10+ years in harsh thermal/humidity environments. |
| AEC-Q101 qualified option | HE3/HM3 variants available for automotive applications; P6SMB170CA-E3/52 is commercial-grade but shares identical die and construction. |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting 24 V CAN FD transceiver signal lines from load-dump-induced transients and ESD events during connector mating. IC Role / Device Role / Timing Role: Bidirectional TVS placed between CAN_H/CAN_L and chassis ground to clamp common-mode surges while preserving signal integrity. Use Value: Clamps 171 V stand-off and 234 V max VC ensure transceiver ICs remain within absolute maximum ratings during ISO 7637-2 Pulse 5a (load dump) events. | Use Scenario: Safeguarding LIN bus master node microcontroller I/O pins against ESD (IEC 61000-4-2 ±8 kV contact) and inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) bidirectional suppressor placed directly at connector entry point to shunt fast transients before reaching MCU GPIO. Use Value: 2.6 A IPPM rating and 234 V VC limit voltage excursion to safe levels for 5 V tolerant LIN transceivers without affecting normal bus signaling. |
| Telecom Power Supply Input | Consumer Smart Meter Front-End |
Use Scenario: Secondary-side overvoltage protection on 48 V telecom DC-DC converter outputs feeding sensitive PHY ICs. IC Role / Device Role / Timing Role: Standoff-rated TVS placed across output rails to absorb coupling transients from primary-side switching noise or external surges. Use Value: 171 V VWM provides 20% margin above nominal 48 V system, while 600 W PPPM handles repetitive 10/1000 μs surges without degradation. | Use Scenario: Input protection for isolated RS-485 interface on electricity meters exposed to field ESD and induced lightning surges. IC Role / Device Role / Timing Role: Symmetrical clamping device installed between differential pair and ground to suppress common-mode transients without disrupting DC bias. Use Value: Bidirectional operation eliminates need for dual unidirectional devices; SMB footprint enables compact placement adjacent to connector per IEC 61000-4-4/5 layout guidelines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ170CA | Same VWM (170 V), lower PPPM (400 W), SMA package (smaller footprint, higher RθJA). | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 without derating. | Select when board space is critical and surge energy is ≤400 W; verify thermal performance with reduced copper area. |
| 1.5SMC170CA | Same VWM and PPPM (600 W), but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm). | Higher thermal mass improves sustained surge handling but requires more PCB area and may not fit dense layouts. | Choose for enhanced thermal robustness in high-reliability industrial power supplies where footprint is not constrained. |
Compared with SMAJ170CA and 1.5SMC170CA, P6SMB170CA-E3/52 delivers optimal balance of 600 W surge capability, SMB footprint efficiency, and MSL Level 1 process compatibility-making it preferred for space-constrained, high-volume automotive and industrial designs requiring repeatable SMT yield.
Availability
P6SMB170CA-E3/52 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, telecom power supply inputs, and consumer smart meter front-ends requiring stable component supply and full traceability.
Supply support for P6SMB170CA-E3/52 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 reliability, precision, and automotive qualification.
The P6SMB Series targets cost-sensitive, high-volume transient protection needs in automotive, industrial, and telecom systems-designed for robustness under repetitive surge stress and seamless integration into automated SMT lines.
FAQ
What is the clamping voltage of P6SMB170CA-E3/52 at its rated peak pulse current?
The P6SMB170CA-E3/52 has a maximum clamping voltage (VC) of 234 V at its specified peak pulse current (IPPM) of 2.6 A, measured using the standard 10/1000 μs double-exponential waveform. This value is guaranteed across the full operating temperature range and ensures downstream components remain within safe voltage limits during surge events. The P6SMB170CA-E3/52 achieves this with low incremental surge resistance and a tightly controlled breakdown distribution.
Is P6SMB170CA-E3/52 suitable for automotive applications requiring AEC-Q101 qualification?
P6SMB170CA-E3/52 is RoHS-compliant and commercial-grade; it is not AEC-Q101 qualified. However, Vishay offers the functionally identical P6SMB170CAHE3_B variant (with HE3 suffix) that carries full AEC-Q101 qualification for automotive use. Engineers selecting P6SMB170CA-E3/52 for non-automotive applications benefit from identical electrical specs and construction, while automotive programs must specify the HE3 or HM3 suffix version to meet qualification requirements.
What is the thermal resistance and maximum junction temperature of P6SMB170CA-E3/52?
The P6SMB170CA-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, and a maximum junction temperature (TJ max) of +150 °C. These values enable reliable operation in ambient temperatures up to +125 °C in properly laid-out PCBs. The P6SMB170CA-E3/52 maintains stable clamping performance across this full range due to its low temperature coefficient of VBR (0.108 %/°C).
How does the bidirectional design of P6SMB170CA-E3/52 affect its circuit placement?
The bidirectional design of P6SMB170CA-E3/52 means it has no polarity marking and functions identically in both directions-ideal for protecting AC-coupled lines, differential buses (e.g., RS-485, CAN), or floating power rails. Unlike unidirectional TVS diodes, the P6SMB170CA-E3/52 can be placed without regard to anode/cathode orientation, simplifying layout and reducing assembly errors. This symmetry is intrinsic to the CA-suffix construction and verified in both directions per datasheet test conditions.
What are the PCB layout recommendations for optimal surge performance of P6SMB170CA-E3/52?
For optimal surge performance, P6SMB170CA-E3/52 must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Vishay datasheet. Short, wide traces to ground or return paths minimize inductance and preserve clamping speed. Avoid thermal relief on pads to maximize heat dissipation during repetitive pulses. The P6SMB170CA-E3/52 achieves its rated 600 W PPPM only under these conditions; smaller pads reduce effective surge rating and increase clamping voltage.
P6SMB170CA-E3/52 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB170CA-E3/52 FAQ
1.How can I place an order for P6SMB170CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB170CA-E3/52 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 P6SMB170CA-E3/52 reliable?
The price and inventory of P6SMB170CA-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB170CA-E3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB170CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB170CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB170CA-E3/52?
P6SMB170CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB170CA-E3/52 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 P6SMB170CA-E3/52?
For technical support, including P6SMB170CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB170CA-E3/52 requirements.
6.How does Aetrix verify that P6SMB170CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB170CA-E3/52 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 P6SMB170CA-E3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB170CA-E3/52?
All P6SMB170CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB170CA-E3/52, 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 P6SMB170CA-E3/52 part is unused and in its original packaging.
Return procedure for P6SMB170CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB170CA-E3/52 Tags
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