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Vishay General Semiconductor - Diodes Division P6SMB43CA-E3/5B
- Part No.:
- P6SMB43CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB43CA-E3/5B.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB43CA-E3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in signal and power lines. It features a 43 V standoff voltage (VWM), 47.8 V minimum breakdown voltage (VBR), 59.3 V maximum clamping voltage (VC) at 10.1 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the P6SMB43CA-E3/5B datasheet, P6SMB43CA-E3/5B pinout, P6SMB43CA-E3/5B application, or P6SMB43CA-E3/5B equivalent, key selection criteria include bidirectional clamping symmetry, low thermal resistance (RθJL = 20 °C/W), AEC-Q101 qualification eligibility, and SMB (DO-214AA) package compatibility with automated SMT assembly.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, delivering identical clamping performance above ±43 V standoff without polarity marking. Its glass-passivated junction ensures stable VBR temperature coefficient (0.101 %/°C) and low leakage (<1.0 μA at VWM), critical for high-impedance sensor inputs.
The device sustains repetitive 600 W transients under 0.01 % duty cycle while maintaining clamping integrity up to 150 °C junction temperature. Its 20 °C/W junction-to-lead thermal resistance enables effective heat dissipation on standard 5.0 mm × 5.0 mm copper pads without external heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 43 V - Maximum continuous reverse voltage before clamping initiates; defines safe operating margin for 36–48 V nominal systems. |
| VBR (Breakdown) | 40.9–45.2 V at 1.0 mA - Confirmed avalanche onset range; ensures predictable turn-on within 5 % tolerance. |
| VC (Clamping) | 59.3 V at 10.1 A - Peak voltage seen by protected circuit during 10/1000 μs surge; limits stress on downstream ICs like RS-485 transceivers. |
| PPPM | 600 W - Surge energy handling per IEEE C62.35 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 compliance when properly laid out. |
| RθJL | 20 °C/W - Junction-to-lead thermal resistance; enables reliable operation at 5.0 W steady-state dissipation with minimal PCB copper area. |
| TJ max. | 150 °C - Maximum junction temperature; compatible with under-hood automotive environments and industrial enclosures. |
| Package | SMB (DO-214AA) - Low-profile SMT package (4.57 mm × 3.94 mm × 2.20 mm); optimized for pick-and-place and reflow compatibility. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Cathode/anode terminals are functionally symmetric; both leads serve as interchangeable surge current paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge current entry (negative polarity) | Accepts transient energy during negative excursions; electrically identical to cathode in bidirectional operation. |
| Cathode | Surge current entry (positive polarity) | Accepts transient energy during positive excursions; functionally mirrored to anode for symmetrical clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | Identical VBR, VC, and IPPM in both directions - eliminates need for polarity-aware layout in differential or AC-coupled lines. |
| Glass passivated junction | Stable leakage (<1.0 μA at VWM) and repeatable breakdown across temperature - ensures long-term reliability in harsh environments. |
| MSL Level 1 rating | Reflow-compatible up to 260 °C peak - supports standard lead-free assembly without moisture sensitivity concerns. |
| AEC-Q101 qualification path | HE3/HM3 variants available - enables direct use in automotive ECUs where qualification traceability is mandatory. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a) - improves protection margin for sensitive analog front-ends. |
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 inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt surges before reaching MCU or signal conditioner ICs. Use Value: Maintains signal integrity under ISO 7637-2 pulses up to 50 V/100 ms while adding <0.5 pF capacitance - no data rate degradation on 500 kbps CAN lines. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs against ESD and lightning-induced surges on long field wiring. IC Role / Device Role / Timing Role: Primary overvoltage clamp across differential pair (A/B) and ground, coordinated with common-mode chokes. Use Value: Clamps 4 kV EFT bursts to <60 V within 1 ns - prevents latch-up in MAX1487-level transceivers and preserves ±7 V common-mode range. |
| Telecom Line Card Protection | Consumer Power Adapter Input |
|
Use Scenario: Front-end surge suppression on DSL/VDSL line cards exposed to induced surges from nearby power lines or lightning coupling. IC Role / Device Role / Timing Role: First-stage protector before gas discharge tube (GDT) and series impedance, absorbing initial 600 W energy spike. Use Value: Limits let-through voltage to <60 V during 10/1000 μs surges - keeps secondary protection stages within safe triggering window and avoids damage to line driver amplifiers. |
Use Scenario: Secondary-side transient suppression on 12 V/24 V DC outputs of wall adapters used in smart home hubs and IoT gateways. IC Role / Device Role / Timing Role: Output rail clamp preventing overvoltage propagation to connected USB-C PD controllers or PMICs during capacitor discharge events. Use Value: Withstands 100 A non-repetitive forward surge (IFSM) - survives accidental short-circuit recovery without degradation, extending adapter field life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43CA | Same SMB package, identical VWM/VBR/VC specs, but rated for 600 W with tighter VC tolerance (±5 % vs. ±6.5 %); higher production volume. | Preferred for high-volume consumer electronics where supply chain stability outweighs minor spec variance. | Select SMBJ43CA when sourcing volume orders requiring broad distributor availability and shorter lead times. |
| 1.5KE43CA | Through-hole DO-15 package; same electrical specs but higher RθJA (75 °C/W vs. 100 °C/W), larger footprint, and lower surge repetition capability. | Suitable only for prototyping or legacy through-hole designs; not recommended for new SMT-based industrial products. | Choose 1.5KE43CA only for manual assembly or backward compatibility - avoid for automated production or space-constrained layouts. |
Compared with SMBJ43CA, P6SMB43CA-E3/5B offers equivalent protection performance in a cost-optimized SMB variant with AEC-Q101-ready suffix options; versus 1.5KE43CA, it delivers superior thermal performance and SMT scalability but requires rework of legacy through-hole footprints.
Availability
P6SMB43CA-E3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, and telecom line card designs requiring stable component supply, RoHS-compliant packaging, and MSL Level 1 reflow readiness.
Supply support for P6SMB43CA-E3/5B 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The P6SMB Series targets cost-sensitive, high-volume transient protection applications where SMB footprint, 600 W surge capability, and AEC-Q101 qualification readiness are essential - particularly in automotive body electronics and industrial fieldbus nodes.
FAQ
What is the clamping voltage of P6SMB43CA-E3/5B at its rated peak pulse current?
The P6SMB43CA-E3/5B has a maximum clamping voltage (VC) of 59.3 V at 10.1 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected circuits experience no more than 59.3 V during specified surge events - critical for ensuring compatibility with 3.3 V or 5 V logic interfaces downstream.
Is P6SMB43CA-E3/5B suitable for automotive applications requiring AEC-Q101 qualification?
The base P6SMB43CA-E3/5B is RoHS-compliant and commercial-grade; however, Vishay offers AEC-Q101 qualified versions under ordering codes such as P6SMB43CAHE3_B. While P6SMB43CA-E3/5B itself is not certified, its design basis and test structure align with AEC-Q101 requirements - making it a direct drop-in candidate when upgraded to the HE3 suffix variant for automotive ECU designs.
How does the bidirectional configuration of P6SMB43CA-E3/5B affect PCB layout?
The P6SMB43CA-E3/5B has no polarity marking and functions identically in both directions, so PCB layout requires no orientation alignment. Engineers may place it across any two nodes needing symmetrical overvoltage protection - such as differential signal pairs or AC-coupled lines - eliminating risk of incorrect installation and simplifying automated assembly verification.
What is the thermal resistance from junction to ambient for P6SMB43CA-E3/5B?
The P6SMB43CA-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard FR-4 PCB construction and defines the maximum steady-state power dissipation (5.0 W) achievable without exceeding the 150 °C maximum junction temperature under natural convection conditions.
Can P6SMB43CA-E3/5B be used in parallel to increase surge current handling?
No - P6SMB43CA-E3/5B should not be paralleled for increased IPPM due to inherent VBR mismatch between units, which causes uneven current sharing and potential thermal runaway. For higher surge ratings, select a single higher-power device such as the 1500 W SMAJ43CA or implement staged protection with upstream GDTs, rather than relying on parallel TVS diodes.
P6SMB43CA-E3/5B 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:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB43CA-E3/5B FAQ
1.How can I place an order for P6SMB43CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB43CA-E3/5B 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 P6SMB43CA-E3/5B reliable?
The price and inventory of P6SMB43CA-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB43CA-E3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB43CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB43CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB43CA-E3/5B?
P6SMB43CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB43CA-E3/5B 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 P6SMB43CA-E3/5B?
For technical support, including P6SMB43CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB43CA-E3/5B requirements.
6.How does Aetrix verify that P6SMB43CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB43CA-E3/5B 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 P6SMB43CA-E3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB43CA-E3/5B?
All P6SMB43CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB43CA-E3/5B, 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 P6SMB43CA-E3/5B part is unused and in its original packaging.
Return procedure for P6SMB43CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB43CA-E3/5B Tags
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Diodes Incorporated
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