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Vishay General Semiconductor - Diodes Division P6SMB56A-E3/5B
- Part No.:
- P6SMB56A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB56A-E3/5B.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:227
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Product details
Overview
P6SMB56A-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection on power and signal lines. It features a 56 V breakdown voltage (VBR = 53.2–58.8 V at IT = 1.0 mA), 77.0 V maximum clamping voltage (VC) at 7.8 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and DC power rail protection.
For engineers reviewing the P6SMB56A-E3/5B datasheet, P6SMB56A-E3/5B pinout, P6SMB56A-E3/5B application, or P6SMB56A-E3/5B equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, 47.8 V stand-off voltage (VWM), <1 µA reverse leakage at VWM, and AEC-Q101 qualification eligibility via HE3/HM3 variants.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below VWM = 47.8 V and rapidly transitions to low-impedance conduction above VBR = 53.2–58.8 V to limit transient energy. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance (<1 Ω typical).
Designed for automated SMT assembly, it meets J-STD-020 MSL Level 1 (peak reflow ≤260 °C), supports 100 A non-repetitive forward surge (IFSM), and maintains operation across -65 °C to +150 °C junction temperature range with thermal resistance RθJA = 100 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 53.2–58.8 V at 1.0 mA test current - defines precise clamping initiation threshold under controlled DC conditions |
| Stand-off Voltage VWM | 47.8 V - maximum continuous reverse operating voltage before significant leakage begins |
| Clamping Voltage VC | 77.0 V at 7.8 A (10/1000 µs) - actual voltage seen by protected circuit during worst-case surge |
| Peak Pulse Power PPPM | 600 W - maximum transient energy absorption capability without failure under standardized waveform |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.220" × 0.130" footprint and matte tin-plated leads |
| Operating Temperature | -65 °C to +150 °C - enables deployment in under-hood automotive, industrial control, and outdoor telecom environments |
| AEC-Q101 Eligibility | Qualified via HE3/HM3 suffix variants - confirms reliability for automotive electronics per stress-test requirements |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity indicated by cathode band. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); mounting pad layout requires 5.0 mm × 5.0 mm copper area per terminal per Vishay recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected line's lower-potential side | Accepts surge current during clamping; must be routed with low-inductance path to ground reference |
| Cathode | Current exit point in forward bias; marked with band; connected to system ground or return path | Provides low-impedance discharge path during transients; ties directly to PCB ground plane for minimal loop inductance |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-ground) without derating in standard layouts |
| Glass passivated junction | Ensures stable VBR tolerance (±5 %) and long-term reliability under thermal cycling and humidity exposure |
| MSL Level 1 moisture sensitivity | Allows direct placement into reflow ovens without dry-packaging or baking - reduces manufacturing overhead |
| Low clamping ratio (VC/VBR ≈ 1.33) | Minimizes overvoltage stress on downstream ICs such as CAN transceivers or microcontroller I/O pins |
| RoHS-compliant, halogen-free options | E3 suffix denotes commercial-grade RoHS compliance; M3 adds halogen-free certification for green supply chain requirements |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply rails and analog sensor outputs (e.g., pressure, temperature) in engine control units against load-dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor VCC and chassis ground to clamp positive-going spikes up to 600 W. Use Value: Prevents latch-up or permanent damage to precision op-amps and ADC front-ends while maintaining <1 µA leakage at 47.8 V nominal rail. |
Use Scenario: Safeguarding digital input channels of programmable logic controllers exposed to field-wiring induced surges in factory automation systems. IC Role / Device Role / Timing Role: TVS mounted at connector interface to shunt fast-rising transients (e.g., EFT bursts) before reaching optocoupler or level-shifter inputs. Use Value: Clamps 7.8 A pulses to ≤77.0 V within <1 ns response time, preserving signal integrity and enabling >100 kV/µs immunity per IEC 61000-4-4. |
| DC Power Rail Protection | Telecom Line Interface |
|
Use Scenario: Secondary overvoltage protection on 48 V telecom power distribution boards downstream of primary DC-DC converters. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing residual switching spikes and hot-swap transients on intermediate bus rails. Use Value: Withstands repetitive 600 W pulses at 0.01 % duty cycle and maintains VWM margin over full temperature range (-65 °C to +150 °C). |
Use Scenario: Surge suppression on RS-485/RS-422 differential data lines in base station remote radio units subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Discrete unidirectional TVS on each line (A/B) referenced to local ground, coordinated with common-mode chokes. Use Value: Limits differential-mode transients to <77.0 V while contributing <1.5 pF typical junction capacitance - no signal integrity degradation at 10 Mbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58A | Higher VBR (55.1–60.7 V), same SMB package, 400 W PPPM rating | Limited to lower-energy transients; not rated for AEC-Q101 even in HE3 variant | Select when cost sensitivity outweighs 600 W requirement and automotive qualification is unnecessary |
| 1.5SMC56A | Same VBR/VC specs but in larger SMC (DO-214AB) package; 1.5 kW PPPM | Requires larger PCB area; better suited for high-reliability industrial power supplies | Choose when higher surge margin is needed and board space allows SMC footprint |
Compared with SMAJ58A and 1.5SMC56A, P6SMB56A-E3/5B delivers optimal balance of 600 W surge handling, SMB footprint efficiency, and AEC-Q101-ready qualification - making it preferred for space-constrained automotive and industrial edge nodes where both performance and manufacturability matter.
Availability
P6SMB56A-E3/5B is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom power distribution systems requiring stable component supply with consistent RoHS-compliant sourcing and tape-and-reel delivery.
Supply support for P6SMB56A-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 protection devices with emphasis on reliability, precision, and application-specific optimization.
The P6SMB Series targets high-volume, high-reliability transient suppression in automotive, industrial, and telecom infrastructure - engineered for automated assembly, thermal robustness, and repeatable clamping performance across extended temperature ranges.
FAQ
What is the clamping voltage of P6SMB56A-E3/5B at its rated peak pulse current?
The P6SMB56A-E3/5B has a maximum clamping voltage (VC) of 77.0 V at 7.8 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized test conditions and represents the upper voltage limit imposed on the protected circuit during a defined transient event. The P6SMB56A-E3/5B maintains this clamping performance consistently across its qualified operating temperature range.
Is P6SMB56A-E3/5B suitable for automotive applications?
P6SMB56A-E3/5B itself is RoHS-compliant and commercial-grade; however, Vishay offers AEC-Q101-qualified versions under HE3 and HM3 suffixes (e.g., P6SMB56AHE3_B). While P6SMB56A-E3/5B shares identical electrical and mechanical specs, formal automotive qualification requires the HE3/HM3 variant. For non-safety-critical automotive subsystems, P6SMB56A-E3/5B is widely deployed with design margin verification.
What does the "-E3/5B" suffix indicate in P6SMB56A-E3/5B?
The "-E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting J-STD-002 solderability standards. The "/5B" specifies packaging: 13-inch diameter plastic tape-and-reel with 3200 units per reel. This format supports high-speed pick-and-place assembly and aligns with IPC-7351B land pattern recommendations for SMB (DO-214AA) footprints.
How does P6SMB56A-E3/5B compare to bidirectional TVS diodes like P6SMB56CA?
P6SMB56A-E3/5B is unidirectional and protects against positive transients only, with polarity-sensitive anode/cathode orientation. In contrast, P6SMB56CA is bidirectional and suppresses surges of either polarity - useful for AC lines or differential buses. Both share identical VBR, VC, and PPPM ratings, but P6SMB56A-E3/5B offers tighter leakage control (<1 µA at VWM) and is preferred for DC rail protection where polarity is fixed.
What thermal derating applies to P6SMB56A-E3/5B above 25 °C ambient?
P6SMB56A-E3/5B follows Vishay's standard derating curve: peak pulse power decreases linearly above 25 °C ambient, with full 600 W rating only at TA ≤ 25 °C. At 75 °C ambient, PPPM drops to ~400 W; at 125 °C, it falls to ~150 W. Derating is governed by junction-to-ambient thermal resistance (RθJA = 100 °C/W) and must be validated using actual PCB copper area per Vishay's recommended 5.0 mm × 5.0 mm pad layout.
P6SMB56A-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):
- 47.8V
- Voltage - Breakdown (Min):
- 53.2V
- Voltage - Clamping (Max) @ Ipp:
- 77V
- Current - Peak Pulse (10/1000µs):
- 7.8A
- 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)
P6SMB56A-E3/5B FAQ
1.How can I place an order for P6SMB56A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB56A-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 P6SMB56A-E3/5B reliable?
The price and inventory of P6SMB56A-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 P6SMB56A-E3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB56A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB56A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB56A-E3/5B?
P6SMB56A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB56A-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 P6SMB56A-E3/5B?
For technical support, including P6SMB56A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB56A-E3/5B requirements.
6.How does Aetrix verify that P6SMB56A-E3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB56A-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 P6SMB56A-E3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB56A-E3/5B?
All P6SMB56A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB56A-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 P6SMB56A-E3/5B part is unused and in its original packaging.
Return procedure for P6SMB56A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB56A-E3/5B Tags
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