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Vishay General Semiconductor - Diodes Division P6SMB43CAHE3/5B
- Part No.:
- P6SMB43CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB43CAHE3/5B.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,355
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Product details
Overview
P6SMB43CAHE3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 43 V standoff voltage (VWM), 45.2 V minimum breakdown voltage (VBR), and 59.3 V maximum clamping voltage (VC) at 10.1 A peak pulse current (IPPM), used to protect signal lines and power rails in automotive and industrial sensor interfaces against ESD and inductive switching transients.
For engineers reviewing the P6SMB43CAHE3/5B datasheet, P6SMB43CAHE3/5B pinout, P6SMB43CAHE3/5B application, or P6SMB43CAHE3/5B equivalent, this device delivers AEC-Q101 qualification, 600 W peak pulse power (10/1000 μs), low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for high-reliability automotive PCB designs requiring robust transient immunity without layout redesign.
Technical Context
The P6SMB43CAHE3/5B operates as a bidirectional avalanche diode with symmetrical clamping behavior in both polarities, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns) to sub-microsecond transients.
Thermal performance is defined by RθJA = 100 °C/W and RθJL = 20 °C/W, with derating applied above TA = 25 °C per Figure 2; it supports repetitive surge duty cycle ≤0.01 % and operates across -65 °C to +150 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 36.8 V - Maximum continuous reverse voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 40.9–45.2 V at 1 mA - Verified avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping) | 59.3 V at 10.1 A IPPM - Peak voltage seen by protected circuit during 10/1000 μs surge; determines downstream component stress. |
| PPPM | 600 W - Sustains 10/1000 μs transient energy without failure; enables protection against IEC 61000-4-5 Level 4 surges. |
| ID (Leakage) | 1.0 μA max at VWM - Negligible standby current; avoids signal distortion or battery drain in low-power sensor nodes. |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and industrial enclosures with elevated ambient temperatures. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated terminals, UL 94 V-0 molded compound, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node in bidirectional configuration | No marking on device; symmetric terminals enable polarity-agnostic placement on PCB. |
| Cathode | Current exit terminal in forward bias; common node in bidirectional configuration | No band or marking - bidirectional operation eliminates cathode/anode orientation requirement during assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485, CAN), and ungrounded sensor outputs without polarity concerns. |
| 600 W peak pulse power | Withstands 10/1000 μs surges up to 10.1 A while limiting voltage to ≤59.3 V - sufficient for ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Combo Wave. |
| AEC-Q101 qualification (HE3 suffix) | Validated for automotive applications including engine control modules, ADAS camera links, and body electronics with extended lifetime requirements. |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes overvoltage overshoot during transient events - critical for safeguarding 3.3 V or 5 V logic interfaces behind the TVS. |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow profile (peak 260 °C) without baking - simplifies SMT manufacturing and reduces process risk. |
Applications
| Automotive Sensor Interface | Industrial RS-485 Bus |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine bay or chassis modules exposed to load dump and inductive kick. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between sensor output and microcontroller ADC input or signal conditioner. Use Value: Limits transient voltage to ≤59.3 V during 100 V/50 ms load dump events, preventing latch-up or damage to 5 V-tolerant front-end circuitry. |
Use Scenario: Shielding RS-485 transceiver I/O pins (A/B) in factory automation PLCs subjected to long cable runs and ground potential differences. IC Role / Device Role / Timing Role: Symmetrical TVS pair (one per line) referenced to common-mode ground, absorbing common-mode surges up to ±1 kV. Use Value: Maintains bus integrity during IEC 61000-4-5 4th-level surges (4 kV line-to-ground) without communication interruption or transceiver failure. |
| Consumer IoT Power Input | Telecom DSL Line Interface |
|
Use Scenario: Safeguarding 12 V DC input stage of smart home hubs connected to wall adapters prone to lightning-induced surges on AC mains. IC Role / Device Role / Timing Role: Primary clamping device upstream of DC-DC converter input capacitor, shunting surge energy to ground. Use Value: Clamps 600 W transients within 1 ns, reducing input rail overshoot to <60 V and preserving input MOSFET gate oxide integrity. |
Use Scenario: Protecting ADSL/VDSL line driver/receiver ICs from induced surges on twisted-pair telephone lines entering building premises. IC Role / Device Role / Timing Role: Bidirectional TVS placed differentially across tip/ring lines, referenced to telecom ground plane. Use Value: Withstands repeated 10/700 μs surges per ITU-T K.21 Basic Level while maintaining <1 pF junction capacitance to avoid signal attenuation at 30 MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43CA | Same VWM/VBR/VC specs but lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 140 °C/W) | Limited to lower-energy transients; unsuitable for automotive load dump where 600 W is required | Select when board space is constrained and surge threat level is limited to IEC 61000-4-2 ESD only. |
| 1.5KE43CA | Through-hole DO-201 package, identical electrical specs, higher IFSM (200 A), but no AEC-Q101 qualification | Not suitable for automated SMT production or automotive under-hood thermal cycling requirements | Choose for prototyping or non-automotive industrial use where manual assembly and cost are prioritized over qualification. |
Compared with SMAJ43CA and 1.5KE43CA, the P6SMB43CAHE3/5B uniquely combines 600 W surge capability, AEC-Q101 qualification, SMB SMT compatibility, and MSL Level 1 - making it the only option qualified for volume automotive production with zero layout change from legacy P6SMB designs.
Availability
P6SMB43CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor protection, industrial RS-485 networks, and telecom line interface applications requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P6SMB43CAHE3/5B 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, efficiency, and application-specific optimization.
The P6SMB Series is engineered for high-energy transient suppression in automotive, industrial, and communications systems - delivering consistent clamping performance, AEC-Q101 compliance, and robust surge endurance in compact SMB packages.
FAQ
What does the "CA" suffix indicate in P6SMB43CAHE3/5B?
The "CA" suffix denotes a bidirectional configuration: the P6SMB43CAHE3/5B provides symmetrical clamping in both polarities, making it suitable for protecting AC-coupled signals, differential buses like RS-485 or CAN, and ungrounded sensor outputs without polarity constraints. Unlike unidirectional variants (e.g., P6SMB43A), it has no cathode marking and conducts equally in either direction once VBR is exceeded.
Is P6SMB43CAHE3/5B qualified for automotive applications?
Yes, the "HE3" suffix confirms AEC-Q101 qualification for the P6SMB43CAHE3/5B. It has undergone stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD per AEC-Q101 Rev D, validating its suitability for under-hood and chassis-mounted automotive electronics such as ADAS cameras, engine control sensors, and body control modules.
What is the maximum clamping voltage of P6SMB43CAHE3/5B under surge conditions?
The P6SMB43CAHE3/5B clamps to a maximum of 59.3 V at 10.1 A peak pulse current (IPPM) using the standard 10/1000 μs waveform. This value is measured per JEDEC standards and represents the highest voltage imposed on the protected circuit during a worst-case transient, ensuring downstream 5 V or 3.3 V ICs remain within absolute maximum ratings.
How does the SMB package of P6SMB43CAHE3/5B compare to SMA or SMC alternatives?
The SMB (DO-214AA) package of the P6SMB43CAHE3/5B offers a balanced trade-off: larger than SMA (lower RθJA = 100 °C/W vs. 140 °C/W) for better thermal handling, yet smaller than SMC (DO-214AB) for denser layouts. Its 0.220" × 0.130" footprint supports automated placement and meets MSL Level 1, unlike many SMC variants requiring baking prior to reflow.
Can P6SMB43CAHE3/5B be used in place of P6SMB43A in an existing design?
No - P6SMB43CAHE3/5B is bidirectional while P6SMB43A is unidirectional. Substituting them requires verifying circuit topology: unidirectional TVS diodes rely on polarity-aware placement (cathode toward protected IC), whereas the P6SMB43CAHE3/5B has no polarity marking and must be used only where symmetrical clamping is functionally required, such as across differential pairs or AC signal paths.
P6SMB43CAHE3/5B 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):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 10.1A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB43CAHE3/5B FAQ
1.How can I place an order for P6SMB43CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB43CAHE3/5B 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 P6SMB43CAHE3/5B reliable?
The price and inventory of P6SMB43CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB43CAHE3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB43CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB43CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB43CAHE3/5B?
P6SMB43CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB43CAHE3/5B 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 P6SMB43CAHE3/5B?
For technical support, including P6SMB43CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB43CAHE3/5B requirements.
6.How does Aetrix verify that P6SMB43CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB43CAHE3/5B 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 P6SMB43CAHE3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB43CAHE3/5B?
All P6SMB43CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB43CAHE3/5B, 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 P6SMB43CAHE3/5B part is unused and in its original packaging.
Return procedure for P6SMB43CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB43CAHE3/5B Tags
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Diodes Incorporated
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