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Vishay General Semiconductor - Diodes Division P6SMB43CAHM3/H
- Part No.:
- P6SMB43CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB43CAHM3/H.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,153
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Product details
Overview
P6SMB43CAHM3/H 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 36.8 V standoff voltage (VWM), 40.9–45.2 V breakdown voltage (VBR) at 1 mA test current, 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 - used to protect automotive-grade sensor interfaces and industrial I/O circuits.
For engineers reviewing the P6SMB43CAHM3/H datasheet, P6SMB43CAHM3/H pinout, P6SMB43CAHM3/H application, or P6SMB43CAHM3/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMB (DO-214AA) package compatibility, and thermal resistance (RθJA = 100 °C/W) for board-level surge protection design.
Technical Context
This device operates as a voltage-clamping transient suppressor with symmetrical bidirectional conduction - no polarity marking required. Its glass-passivated junction enables fast response time (<1 ns) and low incremental surge resistance, critical for suppressing ESD and inductive switching spikes.
The P6SMB43CAHM3/H is rated for repetitive 10/1000 μs pulses at 0.01 % duty cycle and meets MSL level 1 per J-STD-020 with 260 °C lead-free reflow peak temperature. It is halogen-free, RoHS-compliant, and qualified to AEC-Q101 for automotive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 36.8 V - maximum continuous reverse working voltage before clamping begins |
| VBR (Breakdown) | 40.9–45.2 V at 1 mA - ensures reliable turn-on during overvoltage events |
| VC (Clamping) | 59.3 V at 10.1 A IPPM - limits downstream voltage stress during 600 W transient |
| PPPM | 600 W - peak pulse power handling with 10/1000 μs waveform |
| RθJA | 100 °C/W - thermal resistance from junction to ambient, defines derating above 25 °C |
| TJ max. | +150 °C - maximum operating junction temperature supports under-hood automotive use |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with automated placement and IPC-7351B standards |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; dimensions 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node in bidirectional operation | No marking - symmetric terminals enable identical clamping in both directions |
| Cathode | Current exit terminal in forward bias; common node in bidirectional operation | No marking - bidirectional construction eliminates polarity dependency |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics including engine control modules and ADAS sensor interfaces |
| 600 W peak pulse power | Withstands high-energy transients from inductive load switching without degradation |
| Halogen-free & RoHS-compliant | Meets automotive environmental compliance requirements and JEDEC JESD201 Class 2 whisker resistance |
| Low profile SMB package | Enables compact PCB layout in space-constrained automotive and industrial control units |
| Fast response time | Sub-nanosecond clamping prevents voltage overshoot from damaging sensitive IC inputs |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pairs or supply rails. Use Value: Limits transient voltage to ≤59.3 V while maintaining signal integrity and meeting ISO 7637-2 Pulse 5a requirements. | Use Scenario: Safeguarding PLC digital input modules against field-wiring induced surges and ground bounce. IC Role / Device Role / Timing Role: Parallel-connected TVS on 24 V DC input lines upstream of optocouplers or level shifters. Use Value: Absorbs up to 600 W transient energy without latch-up, preserving system uptime in factory automation environments. |
| Telecom Line Protection | Consumer Power Adapter Input |
Use Scenario: Shielding Ethernet PHY interface pins and PoE injectors from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Secondary-level clamping device after gas discharge tube (GDT) primary protection. Use Value: Provides precise 36.8 V standoff and 59.3 V clamping to prevent damage to IEEE 802.3af/at compliant silicon. | Use Scenario: Suppressing switch-mode power supply turn-on spikes and AC line transients in USB-C PD adapters. IC Role / Device Role / Timing Role: Input-stage TVS across bulk capacitor terminals on secondary-side DC output rails. Use Value: Enables robust 600 W surge handling while maintaining <100 nA leakage at 36.8 V for low standby power compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43CA | 400 W PPPM rating; SMA package (smaller footprint, higher RθJA = 140 °C/W) | Limited to lower-energy transients; less suitable for automotive load dump | Select when board space is constrained and peak surge energy is ≤400 W |
| SMCJ43CA | 1500 W PPPM rating; SMC package (larger footprint, lower RθJA = 50 °C/W) | Overqualified for 600 W needs; requires more PCB area and cost | Select when future-proofing for higher-energy threats or extended thermal margin is required |
Compared with SMAJ43CA and SMCJ43CA, the P6SMB43CAHM3/H delivers optimal balance of 600 W surge capacity, AEC-Q101 qualification, and SMB footprint - making it the preferred choice for automotive and industrial designs where reliability, standardization, and thermal performance must coexist within tight layout constraints.
Availability
P6SMB43CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom line surge suppression requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB43CAHM3/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 and automotive-grade qualification.
The P6SMB series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping performance and AEC-Q101 validation are mandatory.
FAQ
What does the 'CA' suffix indicate in P6SMB43CAHM3/H?
The 'CA' suffix in P6SMB43CAHM3/H denotes a bidirectional configuration - meaning the device provides symmetrical clamping in both polarities without cathode band marking. This enables direct placement across AC-coupled signal lines or ungrounded differential buses, unlike unidirectional variants (e.g., P6SMB43A) that require polarity-aware routing.
Is P6SMB43CAHM3/H qualified for automotive use?
Yes, P6SMB43CAHM3/H is AEC-Q101 qualified, as confirmed by its HM3 suffix (halogen-free, RoHS-compliant, and AEC-Q101 qualified). It is specifically intended for automotive applications such as engine control units, body electronics, and ADAS sensor interfaces where reliability under temperature cycling and mechanical shock is critical.
What is the maximum clamping voltage of P6SMB43CAHM3/H at rated peak pulse current?
The maximum clamping voltage (VC) of P6SMB43CAHM3/H is 59.3 V at 10.1 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value ensures downstream circuitry remains below safe voltage thresholds during standardized surge events defined in IEC 61000-4-5 and ISO 7637-2.
How does the SMB package of P6SMB43CAHM3/H compare to SMA or SMC packages?
The SMB (DO-214AA) package of P6SMB43CAHM3/H offers a balanced trade-off: larger than SMA (DO-214AC) for better thermal dissipation (RθJA = 100 °C/W vs. 140 °C/W), yet smaller than SMC (DO-214AB) for denser layouts. Its 4.57 mm × 3.94 mm footprint supports automated placement while maintaining 600 W pulse handling - unlike SMA's 400 W limit or SMC's 1500 W overcapacity.
Does P6SMB43CAHM3/H require derating at elevated ambient temperatures?
Yes, P6SMB43CAHM3/H must be derated above TA = 25 °C per Figure 2 in the datasheet. At 85 °C ambient, its peak pulse power drops to approximately 420 W (70 % of 600 W), and at 125 °C, it falls to ~240 W (40 %). Derating ensures junction temperature stays within the +150 °C absolute maximum, especially under repetitive surge conditions.
P6SMB43CAHM3/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):
- 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/H FAQ
1.How can I place an order for P6SMB43CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB43CAHM3/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 P6SMB43CAHM3/H reliable?
The price and inventory of P6SMB43CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB43CAHM3/H is usually 5 days.
3.What payment methods are accepted for P6SMB43CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB43CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB43CAHM3/H?
P6SMB43CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB43CAHM3/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 P6SMB43CAHM3/H?
For technical support, including P6SMB43CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB43CAHM3/H requirements.
6.How does Aetrix verify that P6SMB43CAHM3/H is sourced from the original manufacturer or authorized distributors?
All P6SMB43CAHM3/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 P6SMB43CAHM3/H meets industry standards.
7.What is the process for return or replacement of P6SMB43CAHM3/H?
All P6SMB43CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB43CAHM3/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 P6SMB43CAHM3/H part is unused and in its original packaging.
Return procedure for P6SMB43CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB43CAHM3/H Tags
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