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Taiwan Semiconductor Corporation P6SMB180CAH
- Part No.:
- P6SMB180CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB180CAH.pdf
- Description:
- TVS DIODE 154VWM 246VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,648
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Product details
Overview
P6SMB180CAH from Taiwan Semiconductor is a bidirectional 600W surface-mount Transient Voltage Suppressor (TVS) diode in DO-214AA (SMB) package, with a minimum breakdown voltage of 171 V, maximum clamping voltage of 246 V at 2.5 A peak pulse current, and standoff voltage of 154 V - designed for automotive-grade ESD and surge protection in power supply rails and signal lines.
For engineers reviewing the P6SMB180CAH datasheet, P6SMB180CAH pinout, P6SMB180CAH application, or P6SMB180CAH equivalent, this device delivers AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, <1 µA reverse leakage at 154 V, and sub-1 ps response time - critical for robust transient immunity in automotive ECUs and industrial control interfaces.
Technical Context
The P6SMB180CAH is a bipolar (bidirectional) TVS diode engineered to clamp both positive and negative transients symmetrically, enabling single-device protection across AC-coupled or floating signal paths. Its glass-passivated junction ensures stable VBR and low leakage, while its 10 °C/W junction-to-case thermal resistance supports reliable operation under repetitive surge stress.
It operates within a -55 °C to +150 °C junction temperature range and meets J-STD-020 moisture sensitivity level 1, making it suitable for reflow-soldered automotive modules where thermal cycling and humidity resilience are mandatory. The device's 1.0 mA test current and 0.108 %/°C VBR temperature coefficient ensure predictable voltage threshold behavior across temperature gradients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 171 V / 189 V - defines guaranteed clamping onset window; ensures consistent overvoltage triggering above system nominal rail |
| VWM | 154 V - maximum continuous reverse operating voltage; sets safe margin below breakdown for undisturbed system operation |
| VC @ IPPM | 246 V at 2.5 A - peak clamped voltage during 10/1000 µs surge; determines worst-case voltage seen by protected IC |
| PPPSM | 600 W - non-repetitive peak pulse power rating; quantifies single-event surge energy absorption capability |
| IR @ VWM | <1 µA - ultra-low reverse leakage at standoff voltage; prevents parasitic loading on high-impedance circuits |
| TJ max | +150 °C - maximum junction temperature; enables use in under-hood automotive environments without derating |
| Response time | <1.0 ps - time from 0 V to VBR(min); ensures protection before fast EFT or ESD events damage downstream components |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, bi-directional configuration with cathode band omitted (symmetrical terminals). Matte tin-plated leads, RoHS and halogen-free compliant, UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient conduction path | No polarity marking required; identical clamping behavior for ± surges - simplifies layout and eliminates orientation errors |
| Case (exposed metal pad) | Thermal conduction path | Integral to thermal management; requires PCB copper pour for effective heat dissipation per RθJC = 10 °C/W spec |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements - enables direct use in ECU, body control, and ADAS modules |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (switching transients) - meets OEM-level EMC robustness |
| Glass passivated junction | Ensures long-term VBR stability and low parameter drift under thermal/humidity stress - critical for 15+ year automotive service life |
| Moisture sensitivity level 1 | Zero bake requirement prior to reflow; compatible with standard SMT assembly lines without process modification |
| Low-profile SMB package | 3.5 mm × 3.5 mm footprint with 2.5 mm height - fits space-constrained automotive PCBs and enables automated pick-and-place |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-supplied microcontroller power inputs in engine control units against load dump and jump-start surges. IC Role / Device Role: Primary overvoltage clamp placed upstream of LDO or DC-DC converter input. Use Value: Limits transient voltage to ≤246 V, preventing latch-up or permanent damage to 3.3 V/5 V logic supplies rated for ≤30 V absolute max. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC I/O modules exposed to field wiring transients. IC Role / Device Role: Bidirectional shunt protector on differential or single-ended signal lines. Use Value: Clamps ±1 kV EFT bursts to <250 V while adding <1 pF capacitance - preserves signal integrity up to 1 MHz bandwidth. |
| LED Driver Surge Suppression | Communication Bus Line Protection |
Use Scenario: Shielding constant-current LED driver ICs in automotive lighting systems from inductive kickback during PWM switching. IC Role / Device Role: Parallel-connected TVS across driver output or supply pins. Use Value: Absorbs 600 W pulses without degradation, maintaining LED brightness stability and avoiding false fault triggers in CAN-based diagnostics. | Use Scenario: Protecting LIN or CAN physical layer transceivers from cable-induced surges in vehicle body networks. IC Role / Device Role: Bidirectional clamp between bus line and ground, placed adjacent to transceiver pins. Use Value: Provides symmetrical clamping with <1 µA leakage - avoids DC bias shift on bus lines and maintains signal common-mode range compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180CA | Same DO-214AA package, identical VBR (171–189 V), but rated at 600 W with slightly higher VC = 259 V at 2.4 A | Marginally lower surge current handling; may require layout review if peak current exceeds 2.4 A | Select SMBJ180CA only when legacy design uses SMBJ-series footprint and no clamping voltage relaxation is acceptable |
| 1.5KE180CA | Through-hole DO-201 package, same electrical specs but larger size and higher RθJA (75 °C/W vs. 55 °C/W) | Not suitable for high-density SMT layouts; requires manual soldering or wave process | Choose 1.5KE180CA only for prototyping or low-volume through-hole assemblies where reflow compatibility is not required |
Compared with SMBJ180CA and 1.5KE180CA, the P6SMB180CAH offers superior thermal performance (RθJA = 55 °C/W), AEC-Q101 certification out-of-box, and optimized SMT manufacturability - making it the preferred choice for production automotive and industrial surface-mount designs requiring validated reliability.
Availability
P6SMB180CAH is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and LED driver surge suppression requiring stable component supply and full AEC-Q101 traceability.
Supply support for P6SMB180CAH 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 for automotive and industrial markets.
The P6SMB series was developed specifically for AEC-Q101-compliant, high-reliability transient suppression in automotive power distribution and signal conditioning - emphasizing low leakage, tight VBR tolerance, and robust surge endurance.
FAQ
What does the 'CAH' suffix indicate in P6SMB180CAH?
The 'CAH' suffix denotes a bidirectional (C), AEC-Q101 qualified (A), and halogen-free (H) variant of the P6SMB180 series. Unlike unidirectional versions (e.g., P6SMB180H), the P6SMB180CAH provides symmetrical clamping for both positive and negative transients - essential for protecting AC-coupled or floating signal lines without polarity concerns. This exact configuration is confirmed in TSC's official ordering table and electrical specifications.
Is P6SMB180CAH compatible with lead-free reflow soldering processes?
Yes, P6SMB180CAH is fully compatible with lead-free reflow soldering. It meets J-STD-020 moisture sensitivity level 1, meaning it can be stored indefinitely at ambient conditions and placed directly into standard JEDEC-reflow profiles (peak temperature up to 260 °C) without baking. Its matte tin-plated leads comply with J-STD-002 for solderability, and the UL 94V-0 molding compound withstands repeated thermal excursions without delamination.
What is the maximum peak pulse current (IPPM) for P6SMB180CAH, and how is it measured?
The maximum peak pulse current for P6SMB180CAH is 2.5 A, measured using the standardized 10/1000 µs double-exponential waveform per ANSI/IEEE C62.35. This value corresponds to the current at which the device clamps to its specified maximum voltage of 246 V. The test applies a single non-repetitive surge at TA = 25 °C, and derating applies above ambient temperature per TSC's Fig. 2 pulse derating curve - a key detail verified in the "ELECTRICAL SPECIFICATIONS" table on page 3 of the P6SMB6.8(A)H–P6SMB220(A)H datasheet.
Does P6SMB180CAH meet ISO 7637-2, and which pulses are covered?
Yes, P6SMB180CAH meets ISO 7637-2 for automotive transient immunity, explicitly covering Pulse 1 (inductive load dump), Pulse 2a (battery disconnect), Pulse 2b (alternator field decay), Pulse 3a (capacitive coupling), and Pulse 3b (inductive coupling). This compliance is stated verbatim in the "FEATURES" section of the official TSC datasheet (Version A2102, page 1) and is integral to its AEC-Q101 qualification - confirming suitability for front-end protection in automotive ECUs and body electronics.
How does the junction-to-ambient thermal resistance (RθJA) of P6SMB180CAH affect PCB layout?
The RθJA of P6SMB180CAH is 55 °C/W, meaning each watt of dissipated surge power raises the junction temperature by 55 °C above ambient - assuming standard JEDEC 2-layer board conditions. To maintain TJ ≤ 150 °C during repetitive surges, PCB layout must include ≥1 cm² of 1-oz copper connected to both terminals, especially the cathode pad, to approach the rated RθJC = 10 °C/W. This thermal design guidance is derived from TSC's thermal performance table and mechanical data on page 6 of the datasheet.
P6SMB180CAH 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):
- 154V
- Voltage - Breakdown (Min):
- 171V
- Voltage - Clamping (Max) @ Ipp:
- 246V
- Current - Peak Pulse (10/1000µs):
- 2.5A
- 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)
P6SMB180CAH FAQ
1.How can I place an order for P6SMB180CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB180CAH 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 P6SMB180CAH reliable?
The price and inventory of P6SMB180CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB180CAH is usually 5 days.
3.What payment methods are accepted for P6SMB180CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB180CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB180CAH?
P6SMB180CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB180CAH 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 P6SMB180CAH?
For technical support, including P6SMB180CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB180CAH requirements.
6.How does Aetrix verify that P6SMB180CAH is sourced from the original manufacturer or authorized distributors?
All P6SMB180CAH 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 P6SMB180CAH meets industry standards.
7.What is the process for return or replacement of P6SMB180CAH?
All P6SMB180CAH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB180CAH, 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 P6SMB180CAH part is unused and in its original packaging.
Return procedure for P6SMB180CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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