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Taiwan Semiconductor Corporation P6SMB56H
- Part No.:
- P6SMB56H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB56H.pdf
- Description:
- 600W, 56V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:3,522
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Product details
Overview
P6SMB56H from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode with a nominal breakdown voltage of 56 V, clamping voltage of 80.5 V at 7.8 A peak pulse current, and stand-off voltage of 45.4 V. It features glass-passivated junction, AEC-Q101 qualification, and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive load-dump and EFT immunity in power-line protection circuits.
For engineers reviewing the P6SMB56H datasheet, P6SMB56H pinout, P6SMB56H application, or P6SMB56H equivalent, this device is selected for high-reliability DC power rail protection in automotive ECUs, industrial PLC I/O modules, and LED driver input stages where fast clamping (<1 ps response), low leakage (<1 µA @ 45.4 V), and robust 600W surge handling are required.
Technical Context
The P6SMB56H operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 50.4–61.6 V breakdown range (tested at 1 mA). Its clamping action limits transients to ≤80.5 V under 10/1000 µs waveform, enabling protection of downstream 50 V-rated ICs such as CAN transceivers or microcontroller power supplies.
Thermal performance is defined by RθJC = 10 °C/W and RθJA = 55 °C/W, supporting continuous operation up to TJ = 150 °C. The DO-214AA (SMB) package provides mechanical robustness and solderability per J-STD-002, with polarity marked by cathode band.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 50.4 V / 61.6 V - Ensures reliable turn-on above system nominal 48 V DC rails while avoiding false triggering during normal ripple. |
| VWM | 45.4 V - Maximum continuous reverse operating voltage; sets safe margin below VBR min for stable standby operation. |
| VC @ IPPM | 80.5 V at 7.8 A - Clamped voltage during 600 W 10/1000 µs surge; determines maximum stress on protected IC's absolute maximum rating. |
| IPPM | 7.8 A - Peak pulse current capability under standard test waveform; defines minimum trace width and fuse coordination requirements. |
| PPPSM | 600 W - Non-repetitive surge power rating; validates suitability for ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 2b (battery dump). |
| IR @ VWM | <1 µA - Ultra-low reverse leakage ensures negligible standby current draw in always-on automotive modules. |
| TJ max | 150 °C - Junction temperature limit compatible with under-hood automotive environments and industrial enclosures without forced cooling. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, single-diode configuration with cathode band marking. Dimensions comply with JEDEC DO-214AA outline; weight ≈ 0.090 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or low-side return path; carries full surge current during clamping. |
| Cathode | Reverse-biased avalanche terminal | Connected to protected line (e.g., 48 V rail); initiates clamping when voltage exceeds VBR. |
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 moisture resistance vs. epoxy-passivated alternatives, critical for under-hood applications. |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load disconnect), Pulse 2a (supply interruption), Pulse 2b (battery dump), and Pulse 3a/b (EFT) waveforms. |
| Low profile SMB package | Enables automated SMT placement and fits tight board spaces typical in ECU and ADAS module designs. |
| Moisture sensitivity level 1 | Eliminates bake requirement prior to reflow, reducing manufacturing cost and process complexity. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Module |
|---|---|
Use Scenario: Protecting LIN bus transceiver power supply against load-dump transients during battery disconnection. IC Role / Device Role: Unidirectional TVS placed between 12 V rail and ground, clamping surges before they reach the transceiver's VCC pin. Use Value: Limits voltage to ≤80.5 V during 600 W pulses, preserving transceiver functionality and preventing latch-up in 50 V-rated devices. |
Use Scenario: Safeguarding 24 V digital input circuitry from field-wiring induced EFT bursts and inductive kickback. IC Role / Device Role: Primary overvoltage clamp on the input front-end, upstream of optocoupler or Schmitt trigger interface. Use Value: Sub-1 ps response time ensures clamping before EFT edges propagate into logic circuitry, maintaining signal integrity. |
| LED Streetlight Driver Input Stage | 48 V Telecom Power Shelf Protection |
Use Scenario: Absorbing lightning-induced surges on AC/DC converter input after rectification but before bulk capacitor. IC Role / Device Role: Secondary-level TVS on DC bus, complementing MOV-based primary protection. Use Value: 600 W rating handles repetitive 10/1000 µs surges common in outdoor lighting installations without degradation. |
Use Scenario: Guarding backplane power distribution against hot-swap transients and cross-coupled noise in modular telecom systems. IC Role / Device Role: Point-of-load clamp on 48 V distribution rail feeding FPGA, PHY, or PMIC subsystems. Use Value: 45.4 V VWM allows stable operation across full 40–57 V telecom range while clamping to 80.5 V during faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ56A | Bidirectional variant; symmetric ±56 V breakdown; higher VC = 93.6 V at same IPPM. | Required where bidirectional surges (e.g., RS-485 lines) or AC-coupled signals need protection. | Select SMBJ56A only if bipolar clamping is needed; P6SMB56H offers lower clamping voltage for unidirectional DC rails. |
| 1.5SMC56A | Higher power (1500 W), larger DO-214AB (SMC) package; VC = 93.6 V at 16.6 A. | Suitable for higher-energy surge environments (e.g., PoE PSE, main AC input) where PCB space permits larger footprint. | Choose 1.5SMC56A when >600 W surge margin is required; P6SMB56H optimizes space and cost for standard automotive/industrial 600 W needs. |
Compared with SMBJ56A and 1.5SMC56A, the P6SMB56H delivers optimal balance of compact SMB footprint, low 80.5 V clamping, and AEC-Q101 qualification-making it preferred for space-constrained, automotive-grade 48–60 V DC rail protection where unidirectional surges dominate.
Availability
P6SMB56H is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and LED driver power supplies requiring stable component supply, AEC-Q101 compliance, and consistent DO-214AA packaging.
Supply support for P6SMB56H 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, MOSFETs, and power management devices.
The P6SMB56H belongs to TSC's AEC-Q101-qualified P6SMBxH series, engineered specifically for automotive and industrial transient suppression where reliability, low leakage, and fast response are critical in harsh electrical environments.
FAQ
What is the breakdown voltage tolerance of the P6SMB56H?
The P6SMB56H has a specified breakdown voltage range of 50.4 V to 61.6 V at 1 mA test current, corresponding to ±10% tolerance around the nominal 56 V rating. This range ensures robust activation above system operating voltage while avoiding premature conduction during normal ripple or transients within specification.
Is the P6SMB56H suitable for bidirectional transient protection?
No, the P6SMB56H is a unidirectional TVS diode intended for DC rail protection with defined anode-to-cathode polarity. For bidirectional applications such as data line or AC signal protection, use the P6SMB56AH variant or SMBJ56A, which provide symmetrical clamping in both directions.
Does the P6SMB56H meet automotive qualification standards?
Yes, the P6SMB56H is AEC-Q101 qualified and tested per the full stress test schedule, including temperature cycling, highly accelerated life testing (HALT), and ESD. It also complies with ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b, making it suitable for automotive power electronics including ECUs and ADAS modules.
What is the maximum clamping voltage of the P6SMB56H under surge conditions?
The P6SMB56H clamps to a maximum of 80.5 V when subjected to its rated 7.8 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is guaranteed across temperature and represents the highest voltage seen by downstream components during a 600 W transient event.
How does the P6SMB56H compare to the P6SMB56AH variant?
The P6SMB56AH has a tighter breakdown voltage range (53.2–58.8 V) and slightly higher stand-off voltage (47.8 V) than the P6SMB56H (50.4–61.6 V, 45.4 V), offering improved margin against false triggering in precision 48 V systems. Both share identical power rating, package, and AEC-Q101 qualification.
P6SMB56H 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):
- 45.4V
- Voltage - Breakdown (Min):
- 50.4V
- Voltage - Clamping (Max) @ Ipp:
- 80.5V
- Current - Peak Pulse (10/1000µs):
- 7.8A
- 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)
P6SMB56H FAQ
1.How can I place an order for P6SMB56H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB56H 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 P6SMB56H reliable?
The price and inventory of P6SMB56H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB56H is usually 5 days.
3.What payment methods are accepted for P6SMB56H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB56H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB56H?
P6SMB56H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB56H 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 P6SMB56H?
For technical support, including P6SMB56H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB56H requirements.
6.How does Aetrix verify that P6SMB56H is sourced from the original manufacturer or authorized distributors?
All P6SMB56H 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 P6SMB56H meets industry standards.
7.What is the process for return or replacement of P6SMB56H?
All P6SMB56H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB56H, 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 P6SMB56H part is unused and in its original packaging.
Return procedure for P6SMB56H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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