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Vishay General Semiconductor - Diodes Division P6SMB43AHM3/H
- Part No.:
- P6SMB43AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB43AHM3/H.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,687
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Product details
Overview
P6SMB43AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 43 V breakdown voltage (VBR = 40.9–45.2 V at IT = 1.0 mA), 59.3 V maximum clamping voltage (VC) at 10.1 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 μs waveform). It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in automotive and industrial power supply rails.
For engineers reviewing the P6SMB43AHM3/H datasheet, P6SMB43AHM3/H pinout, P6SMB43AHM3/H application, or P6SMB43AHM3/H equivalent, this device is selected for robust overvoltage protection in space-constrained DC power inputs, automotive body electronics, and industrial control I/O modules where AEC-Q101 qualification, low incremental surge resistance, and fast response time (<1 ns) are critical.
Technical Context
This unidirectional TVS operates with a cathode-banded polarity and exhibits a temperature coefficient of VBR of +0.101 %/°C. Its glass-passivated junction ensures stable breakdown behavior under repetitive surge conditions, while its MSL Level 1 rating supports lead-free reflow up to 260 °C.
The device delivers 5.0 W steady-state power dissipation on infinite heatsink at 50 °C ambient and withstands 100 A non-repetitive forward surge (8.3 ms half-sine), making it suitable for primary-side transient suppression in 24 V and 48 V systems where clamping voltage margin below downstream component VDS(max) or VIN(max) is essential.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V at 1.0 mA test current - defines precise voltage threshold at which clamping initiates |
| VWM | 36.8 V - maximum continuous reverse working voltage; must exceed system nominal voltage (e.g., 36 V rail) |
| VC @ IPPM | 59.3 V at 10.1 A - clamping voltage during 600 W transient; determines stress on protected IC's absolute max rating |
| IPPM | 10.1 A - peak pulse current capability under 10/1000 μs waveform; sets minimum surge energy handling (≈ 0.6 J) |
| RθJA | 100 °C/W - thermal resistance junction-to-ambient; requires PCB copper pad area ≥ 0.2" × 0.2" (5 mm × 5 mm) for rated derating |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments |
| AEC-Q101 | Qualified - certified for automotive electronic modules per stress test requirements (HTOL, TC, HAST, etc.) |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity without external series impedance |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage overshoot during fast transients, preserving margin for 40 V-rated downstream FETs |
| MSL Level 1, 260 °C peak reflow | Enables standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure |
| Halogen-free & RoHS-compliant (HM3 suffix) | Fulfills environmental compliance for automotive Tier-1 supply chains and EU industrial equipment |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
|
Use Scenario: Protects microcontroller GPIO and CAN transceiver power pins from load-dump and jump-start transients on 12 V battery rail. IC Role / Device Role / Timing Role: Unidirectional TVS clamps positive-going surges above 36.8 V while blocking normal 12–14.5 V operation. Use Value: Prevents latch-up or gate oxide damage in MCU I/O drivers by limiting transient voltage to ≤59.3 V during 100 V/50 ms load dump events. |
Use Scenario: Shields 24 V DC digital input optocoupler circuitry from inductive kickback when solenoid valves de-energize. IC Role / Device Role / Timing Role: Fast-response TVS absorbs 600 W surge energy before upstream fuse opens, maintaining signal integrity. Use Value: Enables >100,000 switching cycles without degradation, verified per AEC-Q101 HTOL testing at 150 °C junction temperature. |
| Telecom Power Supply Front-End | Consumer Appliance Motor Drive Board |
|
Use Scenario: Guards AC/DC adapter output stage against lightning-induced surges coupled via shared building wiring. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed between secondary-side rectifier and bulk capacitor. Use Value: Clamps 1.2/50 μs surges to <60 V, preventing overvoltage failure of 63 V-rated electrolytic capacitors and PWM controllers. |
Use Scenario: Safeguards BLDC motor driver ICs from back-EMF spikes generated during abrupt commutation in washing machine drum control. IC Role / Device Role / Timing Role: Unidirectional suppressor connected across high-side MOSFET drain-source terminals. Use Value: Limits VDS overshoot to 59.3 V, ensuring safe operation below 65 V rated devices without snubber redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A-E3/5B | Same VBR range (40.9–45.2 V), but lower PPPM = 400 W; SMA package (smaller footprint, higher RθJA = 140 °C/W) | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); unsuitable for IEC 61000-4-5 Level 3+ | Select if board space is constrained and surge energy ≤0.4 J; verify thermal performance with reduced copper area. |
| 1.5SMC43AHE3/A | Same electrical specs, but SMC (DO-214AB) package: larger footprint, lower RθJA = 75 °C/W, higher IPPM = 13.5 A | Better thermal performance for high-duty-cycle surges; not drop-in due to 2.54 mm vs. 2.29 mm terminal pitch | Choose when sustained surge repetition or elevated ambient temperatures (>85 °C) require enhanced thermal margin. |
Compared with P6SMB43AHM3/H, SMAJ43A-E3/5B trades peak power and thermal robustness for compactness, while 1.5SMC43AHE3/A improves thermal handling and surge current capacity at the cost of PCB area-neither is pin-compatible, requiring layout revision.
Availability
P6SMB43AHM3/H is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and telecom power supply designs requiring stable component supply, AEC-Q101 qualification, and consistent 600 W surge capability.
Supply support for P6SMB43AHM3/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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The P6SMB Series targets surface-mount transient protection in space-limited, high-surge environments, with design emphasis on AEC-Q101 qualification, repeatable clamping, and compatibility with automated SMT assembly.
FAQ
What is the maximum clamping voltage of the P6SMB43AHM3/H under a 10/1000 μs surge?
The P6SMB43AHM3/H has a maximum clamping voltage (VC) of 59.3 V at 10.1 A peak pulse current (IPPM) under the standardized 10/1000 μs waveform. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The P6SMB43AHM3/H maintains this clamping performance across its qualified operating temperature range of –65 °C to +150 °C.
Is the P6SMB43AHM3/H suitable for automotive applications?
Yes, the P6SMB43AHM3/H is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's P6SMB datasheet (Rev. 09-Jan-2024). It meets stress test requirements including high-temperature operating life (HTOL), temperature cycling, and unbiased highly accelerated stress testing (UHAST), making it appropriate for under-hood and cabin-mounted automotive modules such as lighting controllers and body ECUs. The P6SMB43AHM3/H also complies with RoHS and halogen-free mandates for Tier-1 supply chains.
How does the P6SMB43AHM3/H differ from bidirectional TVS diodes like P6SMB43CA?
The P6SMB43AHM3/H is unidirectional and features a cathode band for polarity-sensitive placement, whereas P6SMB43CA is bidirectional with no polarity marking and symmetric clamping in both directions. The P6SMB43AHM3/H has a lower VWM (36.8 V) than its bidirectional counterpart (33.3 V), offering higher DC operating margin in positive-rail applications. Its IPPM is 10.1 A versus 9.3 A for P6SMB43CA, reflecting optimized unidirectional surge handling. Use P6SMB43AHM3/H where polarity is fixed and VWM margin is critical.
What PCB layout guidelines apply to the P6SMB43AHM3/H for optimal thermal performance?
To achieve rated power dissipation, the P6SMB43AHM3/H 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. These pads should be thermally connected to internal ground or power planes via multiple vias to reduce RθJA. Avoid narrow traces between the P6SMB43AHM3/H and ground; keep trace length under 5 mm to minimize inductance that could degrade clamping speed. The P6SMB43AHM3/H's RθJA of 100 °C/W assumes this layout-deviations require derating per Figure 2 in the datasheet.
Does the P6SMB43AHM3/H have a specified junction capacitance for high-speed signal line protection?
No, the P6SMB43AHM3/H datasheet does not specify junction capacitance (CJ) for this variant. While Figure 4 in the P6SMB family datasheet shows typical CJ vs. VR curves (e.g., ~200 pF at 0 V for lower-voltage parts), no value is published for P6SMB43AHM3/H specifically. For high-speed data lines (e.g., USB, CAN, Ethernet), lower-capacitance TVS devices such as the SM712 or ESD5Z series are recommended. The P6SMB43AHM3/H is intended for power rail and medium-speed I/O protection-not RF or high-frequency signal paths.
P6SMB43AHM3/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:
- 1
- Bidirectional Channels:
- -
- 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)
P6SMB43AHM3/H FAQ
1.How can I place an order for P6SMB43AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB43AHM3/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 P6SMB43AHM3/H reliable?
The price and inventory of P6SMB43AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB43AHM3/H is usually 5 days.
3.What payment methods are accepted for P6SMB43AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB43AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB43AHM3/H?
P6SMB43AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB43AHM3/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 P6SMB43AHM3/H?
For technical support, including P6SMB43AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB43AHM3/H requirements.
6.How does Aetrix verify that P6SMB43AHM3/H is sourced from the original manufacturer or authorized distributors?
All P6SMB43AHM3/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 P6SMB43AHM3/H meets industry standards.
7.What is the process for return or replacement of P6SMB43AHM3/H?
All P6SMB43AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB43AHM3/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 P6SMB43AHM3/H part is unused and in its original packaging.
Return procedure for P6SMB43AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB43AHM3/H Tags
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