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Vishay General Semiconductor - Diodes Division P6SMB43A-E3/5B
- Part No.:
- P6SMB43A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB43A-E3/5B.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,366
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Product details
Overview
P6SMB43A-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping transient overvoltages 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 capability with a 10/1000 μs waveform.
For engineers reviewing the P6SMB43A-E3/5B datasheet, P6SMB43A-E3/5B pinout, P6SMB43A-E3/5B application, or P6SMB43A-E3/5B equivalent, this device is selected for robust ESD and surge protection in automotive, industrial, and telecom power rails where fast response (<1 ns), low clamping ratio (VC/VBR ≈ 1.37), and AEC-Q101 qualification (via HE3/HM3 variants) are critical design requirements.
Technical Context
The P6SMB43A-E3/5B operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its specified VBR range. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
It delivers 600 W peak pulse power per the 10/1000 μs standard waveform with 0.01% duty cycle, and exhibits a temperature coefficient of VBR of +0.101 %/°C - enabling predictable voltage drift across the -65 °C to +150 °C operating junction range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 36.8 V - maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (Breakdown) | 40.9–45.2 V at 1 mA - precise avalanche onset range used to set protection window relative to system rail |
| VC (Clamping) | 59.3 V at 10.1 A IPPM - maximum voltage seen by protected circuit during worst-case 10/1000 μs surge |
| PPPM | 600 W - peak transient energy absorption capacity under standardized surge waveform |
| ID (Leakage) | 1.0 μA max at VWM - ultra-low reverse leakage preserves efficiency in high-impedance or battery-powered circuits |
| TJ max | +150 °C - enables operation in under-hood automotive or enclosed industrial environments |
| RθJA | 100 °C/W - thermal resistance from junction to ambient; informs PCB copper pad sizing for sustained power dissipation |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. Cathode indicated by band marking on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 36 V rail); conducts during overvoltage to shunt surge current to ground |
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 derating on properly laid out PCBs |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| MSL Level 1 (260 °C peak reflow) | Enables single-pass lead-free reflow assembly without moisture-related popcorning or delamination |
| AEC-Q101 qualified variant available | HE3/HM3 suffix versions meet automotive-grade stress testing for engine control, ADAS, and infotainment systems |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a) |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 36 V supply lines in vehicle body control modules against load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between rail and chassis ground to clamp surges above 36.8 V while remaining non-conductive during normal operation. Use Value: Limits voltage to ≤59.3 V during 10.1 A transients, preventing damage to downstream DC-DC converters and microcontrollers rated for 40 V absolute maximum. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation PLC I/O modules exposed to field wiring noise. IC Role / Device Role / Timing Role: Low-leakage (≤1.0 μA) clamping device installed at connector entry point to suppress ESD and induced surges on 24 V signal lines. Use Value: Maintains signal integrity with minimal DC loading while responding in <1 ns to fast transients, preserving measurement accuracy and reducing false triggers. |
| Telecom DC Power Input Protection | Consumer Device USB/Power Adapter Protection |
|
Use Scenario: Guarding primary-side 48 V DC input of telecom remote radio units against lightning-induced surges on outdoor power feeds. IC Role / Device Role / Timing Role: First-stage transient suppressor upstream of bulk capacitance and active OVP circuitry, absorbing up to 600 W of surge energy. Use Value: Withstands repeated 10/1000 μs surges per IEC 61000-4-5, extending system lifetime in harsh outdoor deployments without degradation. |
Use Scenario: Providing secondary-side overvoltage protection on 5–20 V USB PD adapter outputs against fault conditions and plug-in surges. IC Role / Device Role / Timing Role: Compact SMB-footprint TVS placed adjacent to output connector to limit fault voltage before it reaches connected devices. Use Value: Enables compliance with UL 62368-1 transient immunity requirements using a cost-effective, space-efficient discrete solution. |
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 (ON Semiconductor) | Same VWM (36.8 V), VC = 61.3 V at 9.8 A; 400 W PPPM rating; SMA package (larger RθJA) | Lower peak power handling; less suitable for high-repetition surges or compact thermal layouts | Select P6SMB43A-E3/5B when 600 W surge capacity and SMB footprint are required for space-constrained designs. |
| 1.5SMC43A (Littelfuse) | Identical VWM (36.8 V), VC = 59.3 V at 10.1 A; same 600 W rating; SMC (DO-214AB) package - 2.6 mm wider than SMB | Larger footprint increases PCB area use; higher RθJA (125 °C/W) limits thermal performance in dense layouts | Choose P6SMB43A-E3/5B for tighter board space and superior thermal resistance (RθJA = 100 °C/W) in high-density power modules. |
Compared with SMAJ43A and 1.5SMC43A, the P6SMB43A-E3/5B delivers identical clamping performance with higher surge power margin and better thermal efficiency in a smaller SMB package - making it optimal for automotive and industrial designs where layout density and thermal headroom are constrained.
Availability
P6SMB43A-E3/5B is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom power input protection requiring stable component supply, RoHS-compliant packaging, and consistent surge performance across production batches.
Supply support for P6SMB43A-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 diodes, rectifiers, MOSFETs, and passive components with emphasis on reliability, precision, and application-specific optimization.
The P6SMB Series is engineered for high-energy transient suppression in demanding environments - targeting automotive, industrial, and communications systems where robustness, AEC-Q101 qualification, and repeatable clamping behavior are mandatory.
FAQ
What is the maximum clamping voltage of the P6SMB43A-E3/5B under a 10/1000 μs surge?
The P6SMB43A-E3/5B has a maximum clamping voltage (VC) of 59.3 V at 10.1 A peak pulse current (IPPM), measured under the standardized 10/1000 μs waveform. This value defines the highest voltage imposed on the protected circuit during worst-case transient events and is confirmed in the Vishay datasheet revision 09-Jan-2024, page 2.
Is the P6SMB43A-E3/5B RoHS-compliant and halogen-free?
Yes, the P6SMB43A-E3/5B carries the "E3" suffix, indicating it is RoHS-compliant and commercial grade. It is not halogen-free - that designation applies to "M3" suffix variants. The E3 version uses matte tin-plated leads and meets JESD 201 Class 2 whisker resistance requirements.
Does the P6SMB43A-E3/5B have AEC-Q101 qualification?
No, the P6SMB43A-E3/5B itself is not AEC-Q101 qualified. However, Vishay offers AEC-Q101 variants under the HE3 and HM3 suffixes (e.g., P6SMB43AHE3_B). These require explicit ordering codes and are marked with revision identifiers like "_B" to denote automotive qualification per the datasheet footnote on page 3.
What is the thermal resistance junction-to-ambient (RθJA) for the P6SMB43A-E3/5B?
The typical thermal resistance junction-to-ambient (RθJA) for the P6SMB43A-E3/5B is 100 °C/W when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value is critical for calculating junction temperature rise during sustained power dissipation and is specified in the Thermal Characteristics table on page 3 of the Vishay datasheet.
How does the P6SMB43A-E3/5B differ from bidirectional variants like P6SMB43CA?
The P6SMB43A-E3/5B is unidirectional, with polarity marked by a cathode band and intended for DC rail protection where current flows in one direction. In contrast, P6SMB43CA is bidirectional - no polarity marking, symmetric clamping in both directions - suited for AC lines or differential signal protection. Their VWM, VBR, and VC values differ accordingly, and they are not interchangeable without circuit redesign.
P6SMB43A-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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB43A-E3/5B FAQ
1.How can I place an order for P6SMB43A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB43A-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 P6SMB43A-E3/5B reliable?
The price and inventory of P6SMB43A-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 P6SMB43A-E3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB43A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB43A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB43A-E3/5B?
P6SMB43A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB43A-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 P6SMB43A-E3/5B?
For technical support, including P6SMB43A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB43A-E3/5B requirements.
6.How does Aetrix verify that P6SMB43A-E3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB43A-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 P6SMB43A-E3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB43A-E3/5B?
All P6SMB43A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB43A-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 P6SMB43A-E3/5B part is unused and in its original packaging.
Return procedure for P6SMB43A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB43A-E3/5B Tags
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