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Vishay General Semiconductor - Diodes Division P4SMA27CAHE3/61
- Part No.:
- P4SMA27CAHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA27CAHE3/61.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA27CAHE3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 23.1 V standoff voltage (VWM), 25.7–28.4 V breakdown voltage (VBR) at 1 mA, 37.5 V maximum clamping voltage (VC) at 10.7 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial electronics.
For engineers reviewing the P4SMA27CAHE3/61 datasheet, P4SMA27CAHE3/61 pinout, P4SMA27CAHE3/61 application, or P4SMA27CAHE3/61 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low incremental surge resistance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped transient protector with symmetrical avalanche behavior in both directions, enabling robust protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while the low Rsurge minimizes voltage overshoot during high-current transients.
The P4SMA27CAHE3/61 is rated for 150 °C maximum junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its thermal resistance (RθJA = 120 °C/W) reflects standard SMA package performance on minimal pad layout, and it delivers 400 W pulse power only when mounted on specified 0.2" × 0.2" copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 23.1 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (Breakdown) | 25.7–28.4 V at 1 mA - Avalanche onset range; ensures reliable conduction onset within defined tolerance band |
| VC (Clamping) | 37.5 V at 10.7 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case transient; limits stress on downstream components |
| PPPM | 400 W - Peak pulse power handling capacity under standardized 10/1000 µs waveform; validates surge immunity per IEC 61000-4-5 |
| IPPM | 10.7 A - Corresponding peak pulse current at VC; determines minimum trace width and PCB layout robustness |
| TJ max | 150 °C - Maximum junction temperature; sets thermal derating envelope for sustained operation in high-ambient environments |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking. Case conforms to UL 94 V-0 flammability rating; matte tin-plated leads meet J-STD-002 solderability and JESD 22-B102 whisker resistance Class 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | One terminal of symmetrical PN junction; conducts surge current equally in either direction during overvoltage events |
| Cathode | Transient current exit (bidirectional) | Second terminal of symmetrical PN junction; completes low-impedance path to ground or rail during clamping |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC, differential, or floating signal lines without polarity constraints or external circuitry |
| 400 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial and automotive interfaces |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| Low profile SMA package | 0.208" × 0.157" footprint supports high-density PCB layouts and compatibility with standard SMT pick-and-place equipment |
| Glass passivated junction | Ensures long-term stability of breakdown voltage and leakage current across temperature and lifetime stress conditions |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching transients in 12 V/24 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed across signal pair or supply rail to clamp transients before they reach sensitive analog front-end or communication ICs. Use Value: Prevents latch-up or permanent damage to AEC-Q100 qualified microcontrollers and signal conditioners during ISO 7637-2 pulse 1, 2a, and 5a events. |
Use Scenario: Safeguarding digital input/output channels of programmable logic controllers against ESD and surge events from field wiring in factory automation environments. IC Role / Device Role / Timing Role: Parallel-connected TVS on each I/O line to shunt transient energy to common ground, maintaining signal integrity during 4 kV contact ESD (IEC 61000-4-2) and 2 kV surge (IEC 61000-4-5). Use Value: Eliminates need for external series impedance or filtering, preserving signal rise/fall times while meeting EN 61000-6-2 immunity requirements. |
| Consumer Power Adapter Protection | Telecom Line Interface Protection |
Use Scenario: Clamping induced surges on secondary-side DC outputs of wall adapters and USB PD chargers exposed to lightning-induced coupling or hot-plug events. IC Role / Device Role / Timing Role: Low-capacitance TVS placed between VOUT and GND to suppress fast-rising transients without affecting regulation loop stability. Use Value: Maintains <100 pF junction capacitance (typ.) to avoid degrading feedback response, while providing 37.5 V clamping to protect downstream USB-C controller ICs. |
Use Scenario: Protecting Ethernet PHYs, DSL line drivers, and VoIP interface circuits from longitudinal surges entering via unshielded twisted-pair cabling. IC Role / Device Role / Timing Role: Bidirectional TVS deployed across differential pairs (e.g., TX+/TX−) to equalize clamping voltage and prevent common-mode imbalance. Use Value: Symmetrical VC ensures balanced suppression, preserving signal integrity and minimizing bit error rate during GR-1089-CORE Level 3 surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24CA | Higher VWM (24 V), lower VC (38.9 V at 10.3 A), SMB package (larger footprint, higher thermal mass) | Better suited for 24 V systems with tighter clamping margin; requires larger PCB area and different reflow profile | Select when board space allows larger SMB package and system nominal voltage is ≥24 V |
| 1.5KE27CA | Through-hole DO-201 package, same VWM/VBR range, 1500 W peak power but slower response due to higher parasitic inductance | Designed for legacy through-hole assembly or high-energy surge scenarios where PCB layout cannot accommodate SMT constraints | Choose only for prototyping, repair, or non-automated production where SMT is unavailable |
Compared with P4SMA27CAHE3/61, SMBJ24CA offers tighter clamping in 24 V systems but demands more board area, while 1.5KE27CA provides higher energy handling at the cost of slower response and incompatible mounting - making P4SMA27CAHE3/61 optimal for space-constrained, AEC-Q101-compliant SMT designs.
Availability
P4SMA27CAHE3/61 is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC I/O modules, and telecom line interface circuits requiring stable component supply, AEC-Q101 compliance, and repeatable SMT assembly performance.
Supply support for P4SMA27CAHE3/61 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 targets cost-effective, high-volume transient protection for automotive, industrial, and consumer electronics - engineered for automated assembly, AEC-Q101 qualification, and consistent clamping performance across temperature and life cycle.
FAQ
What is the polarity configuration of P4SMA27CAHE3/61?
P4SMA27CAHE3/61 is a bidirectional TVS diode with symmetrical avalanche characteristics in both directions. It has no cathode band or polarity marking, enabling use across AC-coupled signals, differential buses, or floating rails without orientation constraints. This design eliminates risk of incorrect placement during automated assembly and simplifies schematic symbol usage compared to unidirectional variants like P4SMA27AHE3/61.
Does P4SMA27CAHE3/61 meet automotive qualification standards?
Yes, P4SMA27CAHE3/61 carries AEC-Q101 qualification, verified per the HE3 suffix designation in its ordering code. It undergoes stress testing including high-temperature reverse bias (HTRB), temperature cycling, and ESD per AEC-Q101 Rev D, confirming suitability for under-hood and cabin electronics such as body control modules and ADAS sensor interfaces where reliability under thermal and electrical stress is critical.
What is the maximum clamping voltage of P4SMA27CAHE3/61 under surge conditions?
The maximum clamping voltage (VC) of P4SMA27CAHE3/61 is 37.5 V at 10.7 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized test conditions on 0.2" × 0.2" copper pads and represents the highest voltage imposed on protected circuitry during worst-case transient events - essential for verifying margin against IC absolute maximum ratings.
How does the SMA package of P4SMA27CAHE3/61 affect thermal performance?
The SMA (DO-214AC) package of P4SMA27CAHE3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on minimum recommended pad layout. Performance improves significantly with larger copper areas: using 0.2" × 0.2" pads reduces effective RθJA, enabling full 400 W pulse power rating. Layout must follow Vishay's recommended pad dimensions to avoid thermal derating and ensure reliable surge handling.
Can P4SMA27CAHE3/61 replace unidirectional TVS diodes in existing designs?
No - P4SMA27CAHE3/61 is not a drop-in replacement for unidirectional TVS diodes such as P4SMA27AHE3/61. While both share identical VWM, VBR, and VC values, the bidirectional variant lacks polarity marking and exhibits symmetrical conduction. Substitution requires verification that the protected circuit does not rely on forward conduction behavior or DC bias paths, and that layout accommodates absence of cathode identification.
P4SMA27CAHE3/61 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)
P4SMA27CAHE3/61 FAQ
1.How can I place an order for P4SMA27CAHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA27CAHE3/61 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 P4SMA27CAHE3/61 reliable?
The price and inventory of P4SMA27CAHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA27CAHE3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA27CAHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA27CAHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA27CAHE3/61?
P4SMA27CAHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA27CAHE3/61 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 P4SMA27CAHE3/61?
For technical support, including P4SMA27CAHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA27CAHE3/61 requirements.
6.How does Aetrix verify that P4SMA27CAHE3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA27CAHE3/61 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 P4SMA27CAHE3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA27CAHE3/61?
All P4SMA27CAHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA27CAHE3/61, 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 P4SMA27CAHE3/61 part is unused and in its original packaging.
Return procedure for P4SMA27CAHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA27CAHE3/61 Tags
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