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Vishay General Semiconductor - Diodes Division P6SMB43AHM3_A/I
- Part No.:
- P6SMB43AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB43AHM3_A/I.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,805
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Product details
Overview
P6SMB43AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 36.8 V stand-off voltage (VWM), 40.9–45.2 V breakdown voltage (VBR) at 1 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 is used to protect MOSFETs, ICs, and sensor signal lines in industrial and automotive electronics.
For engineers reviewing the P6SMB43AHM3_A/I datasheet, P6SMB43AHM3_A/I pinout, P6SMB43AHM3_A/I application, or P6SMB43AHM3_A/I equivalent, key selection criteria include clamping voltage margin vs. protected device's absolute maximum rating, thermal derating above 25 °C, unidirectional polarity marking (cathode band), and AEC-Q101 qualification status for automotive use cases.
Technical Context
This TVS diode operates as a voltage-clamping protection device triggered by reverse-biased avalanche breakdown. Its glass-passivated junction ensures stable VBR tolerance (±5 %) and low leakage (<1 μA at VWM), while the SMB package supports automated placement and meets MSL Level 1 reflow (260 °C peak).
It delivers 600 W peak pulse power under 10/1000 μs waveform with 0.01 % duty cycle, and exhibits fast response time (<1 ns) and low incremental surge resistance - critical for suppressing ESD, lightning-induced surges, and inductive switching spikes on DC rails and analog/sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 36.8 V - Maximum continuous reverse voltage before significant leakage; sets upper limit for normal operating rail voltage. |
| VBR (Breakdown) | 40.9–45.2 V at 1 mA - Avalanche onset range; defines minimum overvoltage threshold for clamping activation. |
| VC (Clamping) | 59.3 V at 10.1 A - Maximum voltage seen by protected circuit during 10/1000 μs transient; must stay below downstream device's absolute max rating. |
| PPPM | 600 W - Peak transient energy absorption capability under standardized surge waveform; determines survivability of common surge events. |
| IR (Leakage) | <1.0 μA at VWM - Minimal standby power loss and signal integrity impact in high-impedance circuits. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood or enclosed industrial environments. |
| AEC-Q101 | Qualified - Validated for automotive applications per stress test requirements including HTOL, TC, and ESD. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by a band on the body; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased avalanche terminal | Connected to protected line; conducts when transient exceeds VWM, shunting current to ground. |
| Anode (unbanded end) | Reference/ground return path | Typically tied to system ground or low-impedance return plane; completes clamping current path during surge. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity without external series impedance. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain, body control, and ADAS modules requiring long-term reliability under thermal cycling and vibration. |
| Glass passivated junction | Ensures stable VBR over lifetime and temperature; eliminates risk of junction degradation due to moisture or contamination. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-baking; reduces manufacturing complexity and cost. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage overshoot during clamping, improving margin for 3.3 V/5 V/12 V logic and analog components. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-supplied ECUs against load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground, clamping surges before they reach LDOs and microcontrollers. Use Value: Withstands 600 W pulses and operates up to +150 °C, enabling direct placement on automotive PCBs without derating penalties. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: TVS connected across signal and return lines, limiting transient voltage to <60 V to prevent op-amp input damage. Use Value: Sub-1 μA leakage at 36.8 V avoids loading high-impedance sensor outputs; low capacitance preserves signal bandwidth. |
| Consumer Power Adapter Input Stage | Telecom DC Feeder Line Protection |
Use Scenario: Safeguarding AC-DC adapter primary-side rectifier and secondary-side 5 V/12 V rails from surge coupling via mains or USB ports. IC Role / Device Role / Timing Role: Unidirectional TVS on DC output side, referenced to local ground, activated within nanoseconds of overvoltage event. Use Value: 59.3 V clamping voltage provides safe margin below typical 60 V-rated capacitors and regulators in compact adapters. |
Use Scenario: Protecting PoE-powered equipment (e.g., IP cameras, wireless APs) from induced surges on 48 V DC feeder lines. IC Role / Device Role / Timing Role: TVS installed at equipment input connector, shunting surge energy to chassis ground before reaching PD controller ICs. Use Value: AEC-Q101 qualification and halogen-free (HM3) construction meet telecom OEM environmental and reliability mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A-E3/5B | Same VWM (36.8 V), VC = 69.4 V at 8.6 A; lower PPPM (400 W); SMA package (smaller footprint, higher RθJA). | Limited to lower-energy transients; less suitable for ISO 7637-2 Pulse 5a or high-repetition surges. | Select when board space is constrained and surge threat level is Class II (IEC 61000-4-5 0.5 kV). |
| 1.5SMC43A | Same electrical specs (VWM, VBR, VC), but SMC package (DO-214AB); higher thermal mass, RθJL = 15 °C/W vs. 20 °C/W. | Better sustained power handling; preferred for high-ambient-temperature or high-duty-cycle environments. | Choose when thermal performance > board area savings, especially in industrial motor drives or solar inverters. |
Compared with P6SMB43AHM3_A/I, SMAJ43A-E3/5B offers smaller size but reduced surge robustness, while 1.5SMC43A trades footprint for superior thermal dissipation - making P6SMB43AHM3_A/I the balanced choice for AEC-Q101-compliant, space-constrained automotive and industrial designs.
Availability
P6SMB43AHM3_A/I is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom DC feeder line safeguarding requiring stable component supply and full traceability.
Supply support for P6SMB43AHM3_A/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, efficiency, and application-specific optimization.
The P6SMB Series targets board-level transient protection in automotive, industrial, and consumer systems - engineered for high-energy surge handling, AEC-Q101 compliance, and seamless integration into automated SMT assembly lines.
FAQ
What is the clamping voltage of P6SMB43AHM3_A/I at its rated peak pulse current?
The P6SMB43AHM3_A/I has a maximum clamping voltage (VC) of 59.3 V at 10.1 A peak pulse current (IPPM), measured under the standard 10/1000 μs waveform. This value defines the highest voltage the protected circuit will experience during a surge event, and it is critical for ensuring compatibility with downstream components' absolute maximum ratings. The P6SMB43AHM3_A/I maintains this clamping performance across its specified operating temperature range.
Is P6SMB43AHM3_A/I suitable for automotive applications?
Yes, P6SMB43AHM3_A/I is AEC-Q101 qualified (denoted by the HM3 suffix and "_B" or "_D" grade coding in Vishay documentation), meaning it has passed stress tests for high-temperature operating life, temperature cycling, and ESD robustness required for automotive use. It is commonly deployed in body control modules, infotainment power supplies, and ADAS sensor interfaces where reliability under harsh thermal and electrical conditions is mandatory. The P6SMB43AHM3_A/I meets these requirements without derating at ambient temperatures up to +125 °C.
How does the SMB package of P6SMB43AHM3_A/I compare to SMA or SMC in terms of thermal performance?
The SMB (DO-214AA) package of P6SMB43AHM3_A/I offers a balance of compact size and thermal capability: typical junction-to-lead thermal resistance (RθJL) is 20 °C/W, versus ~15 °C/W for larger SMC (DO-214AB) and ~25 °C/W for smaller SMA (DO-214AC). This makes the P6SMB43AHM3_A/I well-suited for moderate-power surge suppression where board space is limited but thermal management remains critical - such as in densely populated automotive ECUs. Its MSL Level 1 rating also simplifies reflow processing.
What is the reverse leakage current specification for P6SMB43AHM3_A/I at its stand-off voltage?
The P6SMB43AHM3_A/I specifies a maximum reverse leakage current (ID) of 1.0 μA at its stand-off voltage (VWM) of 36.8 V and TA = 25 °C. This ultra-low leakage ensures minimal power loss and negligible loading on high-impedance circuits such as sensor bias networks or precision reference rails. Leakage remains below 5 μA even at elevated temperatures up to +125 °C, preserving signal integrity in demanding analog applications where the P6SMB43AHM3_A/I is deployed.
Does P6SMB43AHM3_A/I have polarity marking, and how is it identified?
Yes, P6SMB43AHM3_A/I is a unidirectional TVS diode and features a visible cathode band on the SMB package body - a distinct dark stripe near one end. The banded end is the cathode and must be connected to the line being protected (e.g., 12 V rail), while the unbanded end (anode) connects to ground or return. This polarity is essential for correct operation: reverse-biasing the device enables avalanche clamping during overvoltage events. Incorrect orientation renders the P6SMB43AHM3_A/I ineffective as a protector.
P6SMB43AHM3_A/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:
- Obsolete
- 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_A/I FAQ
1.How can I place an order for P6SMB43AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB43AHM3_A/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 P6SMB43AHM3_A/I reliable?
The price and inventory of P6SMB43AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB43AHM3_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB43AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB43AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB43AHM3_A/I?
P6SMB43AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB43AHM3_A/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 P6SMB43AHM3_A/I?
For technical support, including P6SMB43AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB43AHM3_A/I requirements.
6.How does Aetrix verify that P6SMB43AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB43AHM3_A/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 P6SMB43AHM3_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB43AHM3_A/I?
All P6SMB43AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB43AHM3_A/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 P6SMB43AHM3_A/I part is unused and in its original packaging.
Return procedure for P6SMB43AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB43AHM3_A/I Tags
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