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Vishay General Semiconductor - Diodes Division P4SMA27CAHE3/5A
- Part No.:
- P4SMA27CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA27CAHE3/5A.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,468
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Product details
Overview
P4SMA27CAHE3/5A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in the P4SMA series, designed for clamping voltage transients on signal and power lines. It features a 27 V breakdown voltage (VBR = 25.7–28.4 V at IT = 1.0 mA), 37.5 V maximum clamping voltage (VC) at 10.7 A peak pulse current, 400 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive use - deployed in sensor interface protection and MOSFET gate drive circuits.
For engineers reviewing the P4SMA27CAHE3/5A datasheet, P4SMA27CAHE3/5A pinout, P4SMA27CAHE3/5A application, or P4SMA27CAHE3/5A equivalent, key selection criteria include bidirectional clamping capability, low incremental surge resistance, MSL Level 1 moisture sensitivity, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
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 breakdown characteristics and fast response time (<1 ns), while the SMA (DO-214AC) package supports high thermal dissipation under repetitive surge conditions.
The device delivers 400 W peak pulse power at TA = 25 °C (derated above 25 °C per Fig. 2), with a maximum clamping voltage of 37.5 V at IPPM = 10.7 A and a stand-off voltage of 23.1 V (VWM). It meets UL 94 V-0 flammability rating and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at 1.0 mA test current - defines reliable conduction onset under transient stress |
| VWM | 23.1 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 37.5 V at 10.7 A - clamped voltage seen by protected circuit during 10/1000 µs surge |
| PPPM | 400 W (10/1000 µs waveform) - peak transient energy absorption capacity |
| IPPM | 10.7 A - maximum non-repetitive surge current the device sustains without failure |
| TJ max. | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| Package | SMA (DO-214AC) - standardized surface-mount outline with 5.0 mm × 5.0 mm thermal pad footprint |
Pinout & Package
SMA (DO-214AC) package: molded plastic case with two terminals, no polarity marking for bidirectional types; terminals are matte tin plated and solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Provides symmetrical conduction path for positive and negative surges relative to cathode |
| Cathode | Transient return path (bidirectional) | Functions identically to anode in CA devices - no polarity distinction; forms low-impedance clamp loop |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC, differential, or floating signal lines without orientation constraints |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock |
| 400 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-to-line) when properly mounted on 5.0 mm × 5.0 mm copper pads |
| MSL Level 1 | Unlimited floor life at ≤30 °C/85 % RH - compatible with standard SMT reflow without baking |
| Glass passivated junction | Ensures stable VBR tolerance (±5 %) and low leakage (<1.0 µA at VWM) over lifetime |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Line Protection |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control units against load dump and inductive switching transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed across sensor output and ground to clamp ±30 V transients before they reach ADC input or signal conditioning amplifier. Use Value: Prevents sensor signal corruption and ADC saturation during 100 V/µs transients, maintaining measurement integrity per ISO 16750-2 Pulse 5a. |
Use Scenario: Safeguarding CAN_H and CAN_L lines in vehicle body control modules against ESD and coupled noise from nearby solenoid drivers. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS connected between CAN_H/CAN_L and chassis ground to suppress common-mode surges up to ±30 kV contact ESD. Use Value: Maintains CAN bit timing integrity by limiting clamping voltage to 37.5 V, preventing recessive-to-dominant state errors during transients. |
| Consumer Power Adapter Input Protection | Telecom DSL Line Surge Suppression |
|
Use Scenario: Shielding primary-side rectifier outputs in wall adapters from lightning-induced surges entering via AC mains. IC Role / Device Role / Timing Role: Bidirectional TVS placed across DC bus after bridge rectifier to absorb 400 W surges before they overstress bulk capacitor or controller IC. Use Value: Extends adapter lifetime by limiting peak voltage to 37.5 V during 10/1000 µs surges, avoiding electrolytic capacitor venting or controller latch-up. |
Use Scenario: Protecting ADSL/VDSL line interface ICs from induced surges on twisted-pair telephone lines exposed to outdoor wiring. IC Role / Device Role / Timing Role: TVS array configured as back-to-back diodes across tip/ring to shunt longitudinal mode surges exceeding 23.1 V standoff. Use Value: Preserves DSL sync stability by clamping surges within 1 ns, preventing PHY layer reset events during ITU-T K.21 severe surge tests. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ27CA | Higher package thermal mass (SMB/DO-214AA); 300 W PPPM (vs. 400 W); identical VBR/VC specs | Preferred where board space allows larger footprint and lower surge repetition rate suffices | Select SMBJ27CA if layout permits DO-214AA and thermal derating margin is acceptable |
| 1.5KE27CA | Through-hole TO-218 package; 1500 W PPPM; higher VC = 43 V at 35 A; not AEC-Q101 qualified | Suitable for high-energy industrial AC mains protection but incompatible with SMT automation | Choose 1.5KE27CA only for legacy through-hole designs requiring >400 W surge handling |
Compared with P4SMA27CAHE3/5A, SMBJ27CA offers reduced board density and lower peak power handling, while 1.5KE27CA provides higher surge capacity but eliminates SMT compatibility and automotive qualification - making P4SMA27CAHE3/5A optimal for space-constrained, AEC-Q101–compliant automotive and industrial SMT designs.
Availability
P4SMA27CAHE3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, consumer power adapter inputs, and telecom DSL line protection requiring stable component supply, AEC-Q101 compliance, and consistent 400 W surge performance.
Supply support for P4SMA27CAHE3/5A 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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA series was developed for high-reliability transient suppression in automotive, industrial, and telecom systems - delivering standardized SMA-packaged TVS performance with AEC-Q101 qualification and MSL Level 1 process compatibility.
FAQ
What is the breakdown voltage tolerance for P4SMA27CAHE3/5A?
The P4SMA27CAHE3/5A has a breakdown voltage range of 25.7 V to 28.4 V at 1.0 mA test current, corresponding to a ±5 % tolerance around the nominal 27 V rating. This tight VBR spread ensures predictable clamping onset across production lots and supports robust design margins in automotive and industrial applications where precise voltage thresholds are critical.
Is P4SMA27CAHE3/5A suitable for automotive applications?
Yes, P4SMA27CAHE3/5A is AEC-Q101 qualified and carries the HE3 suffix denoting RoHS-compliant, automotive-grade construction. It undergoes rigorous stress testing including temperature cycling, high-temperature operating life, and ESD immunity - making it suitable for under-hood and cabin-mounted ECUs, sensor modules, and infotainment power rails per ISO 16750-2 requirements.
What is the maximum clamping voltage of P4SMA27CAHE3/5A under surge conditions?
The P4SMA27CAHE3/5A exhibits a maximum clamping voltage (VC) of 37.5 V at 10.7 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value represents the worst-case voltage imposed on the protected circuit during transient events and is verified per JEDEC standards with mounting on 5.0 mm × 5.0 mm copper pads.
Does P4SMA27CAHE3/5A require special PCB layout considerations?
Yes, P4SMA27CAHE3/5A must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 400 W peak pulse power. Short, low-inductance traces to protected nodes and direct grounding to solid planes are essential to minimize voltage overshoot during fast transients - layout deviations reduce effective surge handling below datasheet specifications.
How does the CA suffix affect the functionality of P4SMA27CAHE3/5A?
The CA suffix in P4SMA27CAHE3/5A explicitly denotes bidirectional configuration, meaning the device provides symmetrical clamping for both positive and negative voltage transients. Unlike unidirectional variants (e.g., P4SMA27A), it has no cathode band marking and functions identically in either orientation - ideal for protecting AC-coupled, differential, or floating signal paths without polarity concerns.
P4SMA27CAHE3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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):
- 10.7A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA27CAHE3/5A FAQ
1.How can I place an order for P4SMA27CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA27CAHE3/5A 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 P4SMA27CAHE3/5A reliable?
The price and inventory of P4SMA27CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA27CAHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA27CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA27CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA27CAHE3/5A?
P4SMA27CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA27CAHE3/5A 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 P4SMA27CAHE3/5A?
For technical support, including P4SMA27CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA27CAHE3/5A requirements.
6.How does Aetrix verify that P4SMA27CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA27CAHE3/5A 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 P4SMA27CAHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA27CAHE3/5A?
All P4SMA27CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA27CAHE3/5A, 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 P4SMA27CAHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA27CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA27CAHE3/5A Tags
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