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Taiwan Semiconductor Corporation P6SMB27CAH
- Part No.:
- P6SMB27CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB27CAH.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,437
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Product details
Overview
P6SMB27CAH from Taiwan Semiconductor is a bidirectional 600W surface-mount Transient Voltage Suppressor (TVS) diode designed for automotive-grade ESD and surge protection in power rails and signal lines. It features a standoff voltage of 23.1 V, breakdown voltage range of 25.7–28.4 V at 1 mA, clamping voltage of 37.5 V at 16.8 A peak pulse current, and AEC-Q101 qualification for under-hood electronics.
For engineers reviewing the P6SMB27CAH datasheet, P6SMB27CAH pinout, P6SMB27CAH application, or P6SMB27CAH equivalent, key selection criteria include bidirectional clamping performance, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, DO-214AA (SMB) package compatibility, and low leakage (<1 µA @ 23.1 V) in harsh ambient environments.
Technical Context
The P6SMB27CAH uses a glass-passivated silicon junction to achieve fast transient response (<1.0 ps rise time from 0 V to VBR min) and stable clamping under repetitive surge stress. Its bidirectional configuration enables symmetrical protection without polarity sensitivity, supporting both positive and negative transients across the same device terminals.
Thermally, it delivers RθJC = 10 °C/W and RθJA = 55 °C/W, enabling reliable operation up to TJ = +150 °C. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, ensuring robustness in automated SMT assembly and high-reliability automotive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 23.1 V - Maximum continuous reverse operating voltage before significant leakage begins; defines safe DC/AC rail margin. |
| VBR (min/max) | 25.7 V / 28.4 V @ 1 mA - Verified breakdown threshold ensures predictable turn-on during transients. |
| VC @ IPPM | 37.5 V @ 16.8 A - Clamped voltage limits downstream IC stress during 10/1000 µs surges. |
| PPPSM | 600 W - Peak pulse power rating per standard 10/1000 µs waveform; supports ISO 7637-2 compliance. |
| IR @ VWM | <1 µA - Ultra-low reverse leakage preserves battery life and signal integrity in always-on circuits. |
| TJ max | +150 °C - Junction temperature limit enables deployment near hot engine compartments or power converters. |
| Package | DO-214AA (SMB) - Industry-standard surface-mount outline with 0.090 g mass and UL 94V-0 molding compound. |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with cathode band marking; matte tin-plated leads compliant with J-STD-002 solderability; polarity indicated by molded cathode band (bidirectional operation renders band non-functional but retained for mechanical consistency).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (Bidirectional) | Transient conduction path | Both terminals serve as symmetrical clamping nodes; no functional polarity-device conducts equally in either direction above VBR. |
| Cathode Band (Marking) | Manufacturing reference | Physical marking only; does not indicate electrical polarity in CAH-series bidirectional TVS devices. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock per stress test requirements. |
| Glass-passivated junction | Enhances long-term reliability and stability of VBR under thermal aging and humidity exposure. |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance stabilization network events). |
| Low-profile SMB package | Enables high-density PCB layouts and compatibility with standard pick-and-place equipment for automated manufacturing. |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally constrained supply chains. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V CAN/LIN bus power inputs against load dump and alternator ripple in body control modules. IC Role / Device Role: Bidirectional clamping element placed between VBAT and GND to shunt energy from ISO 7637-2 Pulse 1 (−100 V, 50 ms) and Pulse 2b (−100 V, 200 ms). Use Value: Limits voltage seen by downstream LDOs and CAN transceivers to ≤37.5 V, preventing latch-up or permanent damage. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to microcontrollers in factory automation PLCs. IC Role / Device Role: Low-capacitance TVS placed across differential or single-ended signal lines to suppress EFT bursts (IEC 61000-4-4) and contact ESD (IEC 61000-4-2). Use Value: Maintains signal fidelity with <1 µA leakage at 23.1 V while clamping ±30 kV ESD events to sub-40 V levels. |
| LED Lighting Driver Protection | DC-DC Converter Input Stage |
Use Scenario: Shielding constant-current LED drivers from inductive switching spikes generated by relay or MOSFET control circuits. IC Role / Device Role: Parallel-connected TVS on input side of buck driver IC to absorb 600 W transients from coil de-energization. Use Value: Prevents overvoltage failure of internal FETs and gate drivers by clamping spikes within 1 ps response time. | Use Scenario: Guarding isolated flyback or forward converter primary-side controllers against reflected surge from secondary-side faults. IC Role / Device Role: High-energy TVS mounted across bulk capacitor input to clamp line-to-ground surges before reaching PWM controller and optocoupler feedback path. Use Value: Ensures uninterrupted operation under repeated 10/1000 µs surges up to 16.8 A without parameter drift or degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ27CA | Same DO-214AA package and 27 V nominal breakdown, but rated at 600 W with VC = 43.0 V @ 13.9 A (higher clamping voltage). | Less effective voltage limiting in space-constrained designs where <40 V clamping is mandatory. | Select P6SMB27CAH when lower clamping voltage (37.5 V) is required to protect 3.3 V or 5 V logic interfaces downstream. |
| 1.5KE27CA | Through-hole DO-201 package; higher 1500 W rating but larger footprint and slower thermal response (RθJA ≈ 100 °C/W). | Not suitable for high-density SMT layouts or automotive vibration environments requiring surface-mount reliability. | Choose P6SMB27CAH for automated assembly, AEC-Q101 compliance, and board space savings over legacy through-hole alternatives. |
Compared with SMBJ27CA and 1.5KE27CA, the P6SMB27CAH offers superior clamping performance in a compact, automotive-qualified SMT package-enabling tighter voltage margins, faster surge response, and seamless integration into modern ECUs and industrial controllers without layout redesign.
Availability
P6SMB27CAH is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and LED lighting applications requiring stable component supply, AEC-Q101 validation, and ISO 7637-2 immunity assurance.
Supply support for P6SMB27CAH 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 with global distribution and AEC-Q101 certification capability.
The P6SMB series was developed specifically for automotive and industrial transient suppression, emphasizing rugged packaging, low leakage, and precise bidirectional clamping to meet stringent EMC and reliability standards.
FAQ
What is the clamping voltage of the P6SMB27CAH under a 10/1000 µs surge?
The P6SMB27CAH has a maximum clamping voltage (VC) of 37.5 V at 16.8 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per Figure 3 in the official datasheet and ensures downstream components remain within safe operating voltage limits during surge events. The P6SMB27CAH maintains this clamping performance across its full operating temperature range.
Is the P6SMB27CAH suitable for automotive applications?
Yes, the P6SMB27CAH is AEC-Q101 qualified and explicitly designed for automotive use. It meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements and operates reliably from −55 °C to +150 °C. Its DO-214AA (SMB) package supports automated SMT assembly, and its halogen-free, RoHS-compliant construction satisfies Tier 1 supplier environmental mandates. The P6SMB27CAH is commonly deployed in body control modules, lighting systems, and infotainment power supplies.
How does the P6SMB27CAH differ from unidirectional variants like P6SMB27H?
The P6SMB27CAH is bidirectional, meaning it provides symmetrical clamping for both positive and negative transients across its two terminals, whereas P6SMB27H is unidirectional and requires correct polarity orientation. The P6SMB27CAH has identical VBR, VWM, and PPPSM ratings but eliminates polarity-dependent layout constraints. Its marking code (LPJ) and CAH suffix distinguish it from unidirectional versions, and its cathode band serves only as a mechanical reference-not an electrical indicator-in the P6SMB27CAH.
What is the maximum reverse leakage current for the P6SMB27CAH at its standoff voltage?
The P6SMB27CAH exhibits a maximum reverse leakage current (IR) of less than 1 µA at its standoff voltage (VWM) of 23.1 V, measured at 25 °C. This ultra-low leakage preserves battery runtime in always-on automotive modules and prevents signal distortion in precision analog paths. The P6SMB27CAH maintains leakage below 5 µA even at +125 °C, supporting extended thermal operation without compromising system efficiency.
Does the P6SMB27CAH require derating at elevated ambient temperatures?
Yes, the P6SMB27CAH must be derated above 25 °C ambient per the pulse derating curve (Figure 2 in the datasheet). At 85 °C, its 600 W peak pulse power rating reduces to approximately 420 W; at 125 °C, it drops to ~240 W. This derating ensures junction temperature remains within the 150 °C absolute maximum. Designers using the P6SMB27CAH in high-temperature zones-such as near power converters or under-hood ECUs-must apply appropriate thermal relief or reduce expected surge repetition rates accordingly.
P6SMB27CAH 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 23.1V
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 37.5V
- Current - Peak Pulse (10/1000µs):
- 16.8A
- 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)
P6SMB27CAH FAQ
1.How can I place an order for P6SMB27CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB27CAH 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 P6SMB27CAH reliable?
The price and inventory of P6SMB27CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB27CAH is usually 5 days.
3.What payment methods are accepted for P6SMB27CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB27CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB27CAH?
P6SMB27CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB27CAH 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 P6SMB27CAH?
For technical support, including P6SMB27CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB27CAH requirements.
6.How does Aetrix verify that P6SMB27CAH is sourced from the original manufacturer or authorized distributors?
All P6SMB27CAH 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 P6SMB27CAH meets industry standards.
7.What is the process for return or replacement of P6SMB27CAH?
All P6SMB27CAH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB27CAH, 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 P6SMB27CAH part is unused and in its original packaging.
Return procedure for P6SMB27CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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