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Taiwan Semiconductor Corporation P6SMB56AH
- Part No.:
- P6SMB56AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB56AH.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,477
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Product details
Overview
P6SMB56AH from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode with a breakdown voltage range of 53.2–58.8 V, clamping voltage of 77.0 V at 8.1 A peak pulse current, and DO-214AA (SMB) package. It protects automotive power rails and industrial control inputs against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the P6SMB56AH datasheet, P6SMB56AH pinout, P6SMB56AH application, or P6SMB56AH equivalent, key selection criteria include standoff voltage (47.8 V), low leakage (<1 µA @ VWM), fast response (<1.0 ps), AEC-Q101 qualification, and thermal resistance (RθJA = 55 °C/W).
Technical Context
The P6SMB56AH employs a glass-passivated silicon junction optimized for high-energy transient suppression in 12 V/24 V automotive and industrial systems. Its unidirectional configuration provides reverse-biased clamping only, with forward voltage drop of 3.5 V at 50 A surge current - consistent with P6SMB6.8H–P6SMB91H device group.
Designed to meet ISO 7637-2 immunity requirements, it delivers stable clamping performance across -55 °C to +150 °C junction temperature, supported by RθJC = 10 °C/W and moisture sensitivity level 1 per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 53.2 V / 58.8 V - ensures reliable triggering above system operating voltage while avoiding false clamping during normal operation |
| VWM | 47.8 V - maximum continuous reverse working voltage compatible with 48 V nominal industrial bus systems |
| VC @ IPPM | 77.0 V at 8.1 A - limits transient overvoltage to safe levels for downstream 80 V-rated MOSFETs or controllers |
| PPPSM | 600 W - handles standard 10/1000 µs surge pulses without degradation under automotive load-dump conditions |
| IR @ VWM | <1 µA - negligible standby power loss and no interference with high-impedance sensor bias networks |
| TJ max | +150 °C - supports under-hood placement in engine control units and power distribution modules |
| RθJA | 55 °C/W - enables thermal design margin on 1 oz copper PCBs without forced airflow or heatsinking |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode band marking; matte tin-plated leads compliant with J-STD-002 solderability; weight ≈ 0.090 g; UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to system ground or low-side return in unidirectional TVS configurations |
| Cathode | Reverse-biased clamping node | Connected to protected line (e.g., CAN_H, LIN, 24 V supply rail) to shunt transients to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Glass-passivated junction | Enhances long-term stability and reduces parameter drift under humidity and thermal stress |
| Fast response time | <1.0 ps rise time ensures clamping activation before sensitive ICs experience overstress |
| Low profile SMB package | Enables automated pick-and-place assembly and fits high-density layouts in space-constrained ECUs |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (ESD-coupled noise) immunity requirements |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump transients on 12 V/24 V battery-fed circuits in engine control modules and body controllers. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between power input and ground to clamp surges exceeding 47.8 V. Use Value: Prevents latch-up or destruction of 5 V/3.3 V LDOs and microcontrollers during ISO 7637-2 Pulse 5a events up to 600 W. | Use Scenario: Protecting analog front-end inputs of current/voltage sensors connected to motor drives or PLC analog I/O modules. IC Role / Device Role / Timing Role: Standoff protection element limiting transient voltage to ≤77.0 V during EFT bursts per IEC 61000-4-4. Use Value: Maintains signal integrity and avoids ADC saturation or op-amp damage during 5 kHz burst coupling onto 4–20 mA loops. |
| LED Driver Supply Protection | Communication Bus Line Protection |
Use Scenario: Safeguarding constant-current LED drivers in automotive lighting against reverse-polarity connection and inductive kickback. IC Role / Device Role / Timing Role: Reverse-biased clamping device absorbing energy from relay coil flyback or accidental battery reversal. Use Value: Enables robust 48 V LED headlamp designs with <1 µA leakage preserving driver efficiency and thermal budget. | Use Scenario: Shielding LIN or CAN physical layer transceivers from ESD and coupled transients in vehicle network gateways. IC Role / Device Role / Timing Role: Bidirectional-capable variant support (via CAH suffix) allows shared protection architecture across bus lines. Use Value: Clamps LIN bus voltage to ≤77.0 V during ±8 kV contact ESD (IEC 61000-4-2), preventing transceiver latch-up or data corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ56A | Same DO-214AA package, identical VBR (53.2–58.8 V), but higher VC = 93.6 V at 6.4 A; lower PPPSM = 600 W same rating | Higher clamping voltage reduces margin for 80 V-rated components; suitable where layout allows slightly higher overshoot | Select SMBJ56A if sourcing flexibility is prioritized and clamping voltage margin permits |
| 1.5SMC56A | DO-214AB (SMC) package - larger footprint and higher thermal mass; VBR 53.2–58.8 V, VC = 93.6 V at 6.4 A | Requires PCB redesign due to larger SMC outline; better thermal dissipation for sustained surge duty cycles | Choose 1.5SMC56A when board space allows and junction temperature management under repeated surges is critical |
Compared with SMBJ56A and 1.5SMC56A, the P6SMB56AH offers lower clamping voltage (77.0 V vs. 93.6 V) and tighter VBR tolerance (±5% vs. ±5% for SMBJ56A, but wider for 1.5SMC56A), enabling superior protection for voltage-sensitive loads without requiring layout changes.
Availability
P6SMB56AH is available at Aetrix Electronics and suitable for automotive electronics, industrial power supplies, and communication interface protection requiring stable component supply and AEC-Q101-compliant transient suppression.
Supply support for P6SMB56AH 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive and industrial markets.
The P6SMB56AH belongs to TSC's AEC-Q101-qualified P6SMBx(A)H series, engineered specifically for high-reliability transient suppression in harsh-environment 12 V/24 V/48 V systems with stringent ISO 7637-2 compliance requirements.
FAQ
What is the breakdown voltage range of the P6SMB56AH?
The P6SMB56AH has a specified breakdown voltage (VBR) range of 53.2 V to 58.8 V at 1.0 mA test current, measured per ANSI/IEEE C62.35. This tight ±5% tolerance ensures predictable clamping onset across production lots and temperature extremes, making the P6SMB56AH suitable for precision overvoltage protection in 48 V industrial power rails and automotive subsystems.
Is the P6SMB56AH AEC-Q101 qualified?
Yes, the P6SMB56AH is explicitly AEC-Q101 qualified per the manufacturer's documentation. This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD robustness, confirming its suitability for automotive applications such as body control modules, lighting drivers, and infotainment power supplies where reliability under thermal and electrical stress is mandatory.
What is the maximum clamping voltage of the P6SMB56AH and under what conditions?
The P6SMB56AH has a maximum clamping voltage (VC) of 77.0 V at 8.1 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is guaranteed across the full operating temperature range (-55 °C to +150 °C) and defines the upper voltage limit imposed on protected circuitry during standardized surge events, directly supporting compatibility with 80 V-rated power semiconductors and interface ICs.
Does the P6SMB56AH support bidirectional transient suppression?
No, the P6SMB56AH is a unidirectional TVS diode intended for reverse-biased clamping only. For bidirectional protection, Taiwan Semiconductor offers the P6SMB56CAH variant (with CAH suffix), which provides symmetrical clamping in both polarities and shares identical VBR, VC, and PPPSM ratings - essential for AC-coupled lines like LIN or differential buses where polarity reversal may occur.
What package type does the P6SMB56AH use and what are its mounting characteristics?
The P6SMB56AH uses the DO-214AA (SMB) surface-mount package: low-profile, tape-and-reel compatible (3,000 pcs/reel), with matte tin-plated leads meeting J-STD-002 solderability and JESD 201 Class 2 whisker resistance. Its compact 4.57 mm × 3.94 mm footprint supports automated placement and reflow soldering, and the cathode band marking ensures correct orientation during assembly - critical for unidirectional functionality in the P6SMB56AH.
P6SMB56AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB
- 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):
- 8.1A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB56AH FAQ
1.How can I place an order for P6SMB56AH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB56AH 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 P6SMB56AH reliable?
The price and inventory of P6SMB56AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB56AH is usually 5 days.
3.What payment methods are accepted for P6SMB56AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB56AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB56AH?
P6SMB56AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB56AH 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 P6SMB56AH?
For technical support, including P6SMB56AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB56AH requirements.
6.How does Aetrix verify that P6SMB56AH is sourced from the original manufacturer or authorized distributors?
All P6SMB56AH 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 P6SMB56AH meets industry standards.
7.What is the process for return or replacement of P6SMB56AH?
All P6SMB56AH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB56AH, 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 P6SMB56AH part is unused and in its original packaging.
Return procedure for P6SMB56AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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