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Vishay General Semiconductor - Diodes Division P6SMB56CAHM3_A/H
- Part No.:
- P6SMB56CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB56CAHM3_A/H.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,069
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Product details
Overview
P6SMB56CAHM3_A/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 56 V breakdown voltage (VBR min/max = 53.2–58.8 V), 600 W peak pulse power (10/1000 µs), and clamps to ≤77.0 V at 7.8 A peak pulse current - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the P6SMB56CAHM3_A/H datasheet, P6SMB56CAHM3_A/H pinout, P6SMB56CAHM3_A/H application, or P6SMB56CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, SMB (DO-214AA) package compatibility, and compliance with IEC 61000-4-2/4-4/4-5 surge immunity requirements.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable leakage performance (<1.0 µA at 47.8 V) and fast response time (<1.0 ns), critical for suppressing ESD and lightning-induced surges before downstream IC damage occurs.
The device is rated for 150 °C maximum junction temperature and exhibits low incremental surge resistance, delivering consistent clamping behavior across repetitive 10/1000 µs transients at 0.01% duty cycle. Thermal resistance (RθJA = 100 °C/W) reflects standard SMB mounting on 5.0 mm × 5.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 53.2 V / 58.8 V at 1.0 mA test current - defines reliable conduction onset under transient stress |
| VWM | 47.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 77.0 V at 7.8 A - clamping voltage limiting stress on protected circuitry during 600 W surge |
| PPPM | 600 W - peak pulse power handling per 10/1000 µs waveform, validated for repetitive surge events |
| IPPM | 7.8 A - maximum non-repetitive peak pulse current supported with defined clamping performance |
| TJ max | 150 °C - enables operation in under-hood automotive and industrial environments without derating |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with automated assembly and IPC-7351B land patterns |
Pinout & Package
Two-terminal SMB (DO-214AA) package with no polarity marking for bidirectional operation; terminals are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (bidirectional) | Accepts surge current from either direction; connects to line being protected |
| Cathode | Transient current exit point (bidirectional) | Completes surge path to ground or return rail; symmetrical with anode in CA devices |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD47 |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC JS709E material restrictions for green manufacturing |
| MSL Level 1 | Unlimited floor life at ≤30 °C/60% RH - no bake required prior to reflow soldering |
| 600 W surge rating | Withstands IEC 61000-4-5 Level 4 (4 kV line-to-line, 2 kV line-to-ground) without degradation |
| Low clamping ratio (VC/VBR) | 1.45 typical - minimizes overvoltage exposure to protected ICs such as CAN transceivers or ADC inputs |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting LIN/CAN bus nodes and temperature/pressure sensor outputs against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional transient clamp placed between sensor output and microcontroller ADC input or transceiver line. Use Value: Limits induced transients to ≤77.0 V, preserving signal integrity and preventing latch-up in 3.3 V or 5 V interface ICs. |
Use Scenario: Shielding 4–20 mA current loop inputs in programmable logic controllers from field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage protection element across input terminals, upstream of precision op-amp conditioning stages. Use Value: Absorbs up to 600 W of surge energy while maintaining <1.0 µA leakage at 47.8 V, avoiding DC offset errors. |
| Telecom Line Card Protection | Consumer USB Port ESD Guard |
Use Scenario: Safeguarding Ethernet PHY interfaces and PoE-powered equipment from lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Common-mode TVS pair on differential pairs (e.g., TX+/TX−), referenced to chassis ground. Use Value: Symmetrical clamping ensures balanced suppression without skewing differential signaling integrity. |
Use Scenario: Adding secondary-level ESD protection to USB 2.0 data lines (D+/D−) in portable electronics. IC Role / Device Role / Timing Role: Fast-response shunt device placed adjacent to connector, diverting >8 kV HBM ESD strikes. Use Value: Sub-1 ns response time prevents ESD propagation into USB controller, meeting IEC 61000-4-2 Level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58CA | Same SMB package, 58 V VBR, lower 400 W PPPM, not AEC-Q101 qualified | Limited to commercial-grade industrial or consumer use; unsuitable for automotive under-hood deployment | Select when cost sensitivity outweighs automotive qualification and 600 W surge margin is not required |
| 1.5KE56CA | Through-hole DO-201 package, identical 56 V VBR and 600 W rating, higher RθJA (75 °C/W) | Requires PCB real estate for axial leads; less suitable for high-density SMT layouts | Choose only if legacy through-hole assembly is mandated or thermal management via heatsinking is feasible |
Compared with SMAJ58CA and 1.5KE56CA, P6SMB56CAHM3_A/H uniquely combines AEC-Q101 qualification, 600 W surge capacity, and SMB surface-mount compatibility - making it the preferred choice for new automotive and space-constrained industrial designs requiring production-grade reliability.
Availability
P6SMB56CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, telecom line cards, and consumer USB port protection requiring stable component supply and full traceability.
Supply support for P6SMB56CAHM3_A/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 application-specific performance.
The P6SMB Series delivers standardized, high-power TVS protection in compact SMB packages, engineered specifically for automotive, industrial, and telecom systems demanding robust ESD and surge immunity without design compromise.
FAQ
What is the breakdown voltage tolerance for P6SMB56CAHM3_A/H?
The P6SMB56CAHM3_A/H has a specified breakdown voltage range of 53.2 V to 58.8 V at 1.0 mA test current, corresponding to ±10% tolerance around the nominal 56 V rating. This tight VBR window ensures predictable clamping onset across production lots and temperature extremes, critical for protecting 48 V automotive subsystems and 5 V/3.3 V logic interfaces. The device meets this specification per Vishay Document Number 88370, Revision 09-Jan-2024.
Is P6SMB56CAHM3_A/H suitable for automotive applications?
Yes, P6SMB56CAHM3_A/H is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials under Vishay's HM3 automotive-grade process. Its 150 °C maximum junction temperature, MSL Level 1 rating, and validation across temperature cycling, HTRB, and ESD stress make it suitable for engine control units, ADAS sensor modules, and infotainment power rails. The "HM3" suffix in P6SMB56CAHM3_A/H explicitly denotes this automotive qualification.
What is the maximum clamping voltage of P6SMB56CAHM3_A/H at rated surge current?
The maximum clamping voltage (VC) of P6SMB56CAHM3_A/H is 77.0 V at 7.8 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value represents worst-case clamping performance across temperature and lot variation, ensuring protected circuits experience no more than 77.0 V during surge events. It is measured per Figure 1 and Table 1 in Vishay's P6SMB datasheet (Document Number 88370).
Does P6SMB56CAHM3_A/H have polarity markings on the package?
No, P6SMB56CAHM3_A/H does not have polarity markings because it is a bidirectional TVS diode - the "CA" suffix indicates symmetrical conduction in both directions. Unlike unidirectional variants (e.g., P6SMB56A), which feature a cathode band, the P6SMB56CAHM3_A/H SMB package is unmarked, simplifying board layout and eliminating orientation errors during automated placement.
What is the thermal resistance of P6SMB56CAHM3_A/H in standard mounting conditions?
The typical junction-to-ambient thermal resistance (RθJA) of P6SMB56CAHM3_A/H is 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, per Vishay's test condition in Document Number 88370. This value assumes no additional heatsinking and guides thermal design for sustained power dissipation up to 5.0 W at 50 °C ambient. Derating curves in Figure 2 define safe operating limits above 25 °C ambient.
P6SMB56CAHM3_A/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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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:
- 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)
P6SMB56CAHM3_A/H FAQ
1.How can I place an order for P6SMB56CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB56CAHM3_A/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 P6SMB56CAHM3_A/H reliable?
The price and inventory of P6SMB56CAHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB56CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB56CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB56CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB56CAHM3_A/H?
P6SMB56CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB56CAHM3_A/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 P6SMB56CAHM3_A/H?
For technical support, including P6SMB56CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB56CAHM3_A/H requirements.
6.How does Aetrix verify that P6SMB56CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB56CAHM3_A/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 P6SMB56CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB56CAHM3_A/H?
All P6SMB56CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB56CAHM3_A/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 P6SMB56CAHM3_A/H part is unused and in its original packaging.
Return procedure for P6SMB56CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB56CAHM3_A/H Tags
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