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Vishay General Semiconductor - Diodes Division P6SMB43CAHM3_B/I
- Part No.:
- P6SMB43CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB43CAHM3_B/I.pdf
- Description:
- 600W,43V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,878
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Product details
Overview
P6SMB43CAHM3_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 43 V breakdown voltage (VBR min/max = 40.9–45.2 V at 1 mA), 36.8 V stand-off voltage (VWM), and clamps to ≤59.3 V at 10.1 A peak pulse current (10/1000 µs waveform), delivering 600 W peak pulse power for surge protection in automotive sensor interfaces and industrial I/O circuits.
For engineers reviewing the P6SMB43CAHM3_B/I datasheet, P6SMB43CAHM3_B/I pinout, P6SMB43CAHM3_B/I application, or P6SMB43CAHM3_B/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification (HM3 suffix), SMB (DO-214AA) package compatibility, and verified 150 °C junction temperature rating - all critical for robust ESD and lightning surge protection in harsh-environment electronics.
Technical Context
This device operates as a bidirectional avalanche diode with symmetrical clamping in both polarities, enabling transient suppression without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM), while the low incremental surge resistance supports fast response to sub-nanosecond ESD events.
The P6SMB43CAHM3_B/I is rated for 600 W peak pulse power (10/1000 µs), derated above 25 °C per Fig. 2, and exhibits a typical thermal resistance of 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads. It meets MSL Level 1 (J-STD-020) and is halogen-free, RoHS-compliant, and AEC-Q101 qualified for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V at 1 mA - defines precise avalanche initiation window for repeatable clamping threshold |
| VWM | 36.8 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | ≤59.3 V at 10.1 A - clamped voltage during 600 W transient, limiting stress on downstream ICs |
| IPPM | 10.1 A (10/1000 µs) - peak surge current handling capacity under standardized surge waveform |
| TJ max | +150 °C - enables operation in under-hood automotive or high-temperature industrial environments |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height |
| Qualification | AEC-Q101 qualified (HM3 suffix) - validated for automotive electronic systems per stress test requirements |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional device with no polarity marking - terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts bidirectionally when voltage exceeds ±VBR |
| Case | Thermal and mechanical interface | Plastic molded body with matte tin-plated leads; solderable per J-STD-002 and JESD 22-B102 |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 600 W peak pulse power (10/1000 µs) | Withstands high-energy surges common in automotive load-dump or industrial switching noise |
| AEC-Q101 qualification (HM3) | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| Low profile SMB package | 0.220" × 0.130" footprint fits dense PCB layouts while maintaining thermal performance |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and reflow compatibility up to 260 °C peak temperature |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
|
Use Scenario: Protecting CAN, LIN, or analog sensor outputs (e.g., pressure, temperature) from ESD and load-dump transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector or IC input pins to shunt surge energy before it reaches sensitive circuitry. Use Value: Maintains signal integrity by clamping transients to ≤59.3 V while supporting AEC-Q101 reliability requirements for 15-year automotive service life. |
Use Scenario: Safeguarding PLC digital input modules and RS-485 transceivers against induced surges from nearby motor contactors or relay switching. IC Role / Device Role / Timing Role: Primary overvoltage protection element across differential or single-ended signal lines, operating independently of data direction or polarity. Use Value: Delivers 600 W surge handling in compact SMB package, reducing board space vs. through-hole alternatives without sacrificing clamping performance. |
| Consumer Power Adapter Input | Telecom Line Card Surge Protection |
|
Use Scenario: Secondary-side transient suppression on DC output rails of wall adapters and USB PD chargers exposed to system-level ESD events. IC Role / Device Role / Timing Role: Standoff-rated (36.8 V) bidirectional clamp that remains non-conductive during normal 5–20 V operation but activates within nanoseconds during overvoltage. Use Value: Prevents latch-up or damage to downstream DC-DC controllers and load switches while meeting UL 94 V-0 flammability requirements. |
Use Scenario: Front-end protection of Ethernet PHYs and xDSL line drivers subjected to lightning-induced surges on twisted-pair telecom lines. IC Role / Device Role / Timing Role: First-stage TVS in multi-tier protection scheme, absorbing bulk surge energy before gas discharge tubes or MOVs activate. Use Value: Fast response time and low clamping voltage (≤59.3 V) preserve signal timing margins and prevent false triggering in high-speed data interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43CA | Same VBR range (40.9–45.2 V) and SMB package, but rated for 400 W peak power (vs. 600 W) | Limited to lower-energy surge environments; not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification or 600 W requirement |
| 1.5KE43CA | Through-hole DO-201 package, same 43 V bidirectional rating, 600 W rating, but larger footprint and higher RθJA | Requires PCB real estate and wave-solder process; unsuitable for high-density SMT designs | Choose only if legacy through-hole assembly is mandated or thermal pad area is insufficient for SMB |
Compared with SMAJ43CA and 1.5KE43CA, the P6SMB43CAHM3_B/I uniquely combines 600 W surge capability, AEC-Q101 qualification, and compact SMB packaging - making it the optimal choice for new automotive and industrial SMT designs requiring high-reliability, space-constrained transient protection.
Availability
P6SMB43CAHM3_B/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, consumer power adapter outputs, and telecom line card surge protection requiring stable component supply across production lifecycles.
Supply support for P6SMB43CAHM3_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-energy transient suppression in automotive, industrial, and consumer electronics - delivering consistent clamping behavior, AEC-Q101 validation, and robust surge handling in surface-mount form.
FAQ
What does the "CA" suffix indicate in P6SMB43CAHM3_B/I?
The "CA" suffix denotes a bidirectional configuration: the P6SMB43CAHM3_B/I conducts and clamps symmetrically in both polarities, making it suitable for AC-coupled signals, differential buses like CAN or RS-485, and floating inputs where polarity cannot be guaranteed. Unlike unidirectional variants (e.g., P6SMB43A), it has no cathode band marking and requires no orientation during placement.
Is P6SMB43CAHM3_B/I suitable for automotive applications?
Yes - the HM3 suffix confirms P6SMB43CAHM3_B/I is halogen-free, RoHS-compliant, and AEC-Q101 qualified. It has passed stress tests including high-temperature reverse bias, temperature cycling, and unbiased highly accelerated stress testing, validating its use in engine control units, body electronics, and ADAS sensor modules per automotive reliability standards.
What is the maximum clamping voltage of P6SMB43CAHM3_B/I under surge conditions?
The P6SMB43CAHM3_B/I clamps to a maximum of 59.3 V when subjected to its rated 10.1 A peak pulse current (10/1000 µs waveform). This value is measured at the device terminals under standardized test conditions and represents the upper limit of voltage seen by protected circuitry during a full-power transient event.
How does the SMB (DO-214AA) package of P6SMB43CAHM3_B/I compare thermally to larger packages?
The SMB package of P6SMB43CAHM3_B/I delivers a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads - sufficient for intermittent surge duty (0.01% duty cycle). While larger packages like DO-201 offer lower RθJA, the SMB's optimized pad layout and 20 °C/W junction-to-lead resistance ensure reliable 600 W pulse handling in space-constrained SMT designs.
Can P6SMB43CAHM3_B/I replace older P6SMB43CA-E3 parts in existing designs?
Yes - P6SMB43CAHM3_B/I maintains identical electrical specifications (VBR, VWM, VC, IPPM) and SMB mechanical dimensions as P6SMB43CA-E3, with added benefits: halogen-free construction, enhanced whisker resistance (JESD 201 Class 2), and AEC-Q101 qualification. No PCB or layout changes are required for drop-in replacement in commercial or upgraded automotive designs.
P6SMB43CAHM3_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):
- 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:
- 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)
P6SMB43CAHM3_B/I FAQ
1.How can I place an order for P6SMB43CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB43CAHM3_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 P6SMB43CAHM3_B/I reliable?
The price and inventory of P6SMB43CAHM3_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 P6SMB43CAHM3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB43CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB43CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB43CAHM3_B/I?
P6SMB43CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB43CAHM3_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 P6SMB43CAHM3_B/I?
For technical support, including P6SMB43CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB43CAHM3_B/I requirements.
6.How does Aetrix verify that P6SMB43CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB43CAHM3_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 P6SMB43CAHM3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB43CAHM3_B/I?
All P6SMB43CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB43CAHM3_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 P6SMB43CAHM3_B/I part is unused and in its original packaging.
Return procedure for P6SMB43CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB43CAHM3_B/I Tags
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Diodes Incorporated
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