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Vishay General Semiconductor - Diodes Division P4SMA30CAHE3/5A
- Part No.:
- P4SMA30CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA30CAHE3/5A.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,249
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Product details
Overview
P4SMA30CAHE3/5A 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 30 V standoff voltage (VWM), 33.3 V minimum breakdown voltage (VBR), 41.4 V maximum clamping voltage (VC) at 9.7 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) capability with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial systems.
For engineers reviewing the P4SMA30CAHE3/5A datasheet, P4SMA30CAHE3/5A pinout, P4SMA30CAHE3/5A application, or P4SMA30CAHE3/5A equivalent, key selection criteria include bidirectional clamping performance, AEC-Q101 qualification, thermal resistance (RθJA = 120 °C/W), and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamped surge protector with symmetrical bidirectional conduction - no polarity marking required. Its glass-passivated junction ensures stable avalanche behavior under repetitive 10/1000 µs transients up to 400 W, derated linearly above 25 °C ambient per Fig. 2.
Designed for low-inductance PCB mounting on 5.0 mm × 5.0 mm copper pads, it delivers fast response time (<1 ns), low incremental surge resistance, and meets MSL Level 1 (260 °C reflow peak). The HE3 suffix confirms RoHS compliance and AEC-Q101 qualification for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 30 V - maximum continuous reverse working voltage before clamping initiates |
| VBR (Breakdown Voltage) | 33.3 V min at 1 mA - guaranteed avalanche onset threshold under DC test conditions |
| VC (Clamping Voltage) | 41.4 V max at IPPM = 9.7 A - peak line voltage seen by protected circuit during worst-case transient |
| PPPM (Peak Pulse Power) | 400 W (10/1000 µs) - surge energy handling capacity with 0.01% duty cycle; 300 W above 91 V rating does not apply here |
| RθJA | 120 °C/W - thermal resistance from junction to ambient air on standard 5.0 mm × 5.0 mm pads; dictates derating above 25 °C |
| TJ max | 150 °C - maximum allowable junction temperature; limits sustained power dissipation and transient repetition rate |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional - no cathode/anode marking; symmetrical terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; clamps voltage in either polarity when V > |VBR| |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualification (HE3 suffix) | Validated for automotive under-hood and infotainment applications requiring extended temperature cycling and humidity robustness |
| Low-profile SMA package | 0.208" × 0.157" footprint with 0.090" height - compatible with high-density PCB layouts and automated pick-and-place |
| Glass passivated junction | Ensures stable, repeatable avalanche characteristics over lifetime and across temperature extremes |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard 260 °C reflow without baking preconditioning |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Line Protection |
|---|---|
|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) from load-dump and inductive switching transients in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential or single-ended sensor lines to clamp transients before they reach ADC inputs or signal conditioning amplifiers. Use Value: Prevents latch-up or permanent damage to precision front-end ICs while maintaining signal integrity below 30 V operating range. |
Use Scenario: Safeguarding CANH/CANL lines against ESD and ISO 7637-2 pulse 1/2/5a surges in factory automation controllers. IC Role / Device Role / Timing Role: Low-capacitance bidirectional suppressor mounted directly at connector entry point to shunt transient energy before transceiver input stage. Use Value: Maintains CAN bus signal fidelity with <10 pF junction capacitance (typ.) and clamps to ≤41.4 V, preserving data integrity during 400 W surges. |
| Consumer Power Adapter Input Protection | Telecom DSL Line Surge Suppression |
|
Use Scenario: Guarding AC-DC adapter primary-side rectifier and controller ICs against lightning-induced surges on mains input lines. IC Role / Device Role / Timing Role: Secondary-level TVS placed after fuse and MOV, providing precise clamping where fast response and low VC are critical. Use Value: Limits voltage overshoot to 41.4 V during 10/1000 µs events, reducing stress on 65 V-rated MOSFETs and enabling smaller snubber designs. |
Use Scenario: Protecting ADSL/VDSL line drivers and receivers from induced surges on twisted-pair telephone lines exposed to outdoor environments. IC Role / Device Role / Timing Role: Bidirectional suppressor bridging tip/ring lines to ground, rated for repeated telecom-grade transients per ITU-T K.20/K.21. Use Value: Withstands 400 W pulses without degradation and maintains low leakage (<1 µA at 30 V), preventing baseline drift in sensitive line receivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30CA | Higher package thermal mass (SMB/DO-214AA); RθJA ≈ 80 °C/W; same VWM/VC specs but higher IPPM (18.3 A) | Better suited for higher average power dissipation; requires larger PCB pad area (≥7.0 mm × 6.2 mm) | Select when board layout allows larger footprint and thermal management demands lower junction temperature rise |
| 1.5KE30CA | Through-hole (DO-201AE); 1500 W PPPM rating; higher VC (49.9 V); slower response due to lead inductance | Used in legacy power supply designs where through-hole assembly remains standard; less suitable for high-speed signal lines | Choose only for cost-sensitive, non-SMT legacy systems where 49.9 V clamping is acceptable and board space permits axial leads |
Compared with SMBJ30CA and 1.5KE30CA, P4SMA30CAHE3/5A offers optimal balance of compact SMT form factor, AEC-Q101 qualification, and precise 41.4 V clamping - making it preferred for new automotive and space-constrained industrial designs requiring verified reliability and automated manufacturing compatibility.
Availability
P4SMA30CAHE3/5A is available at Aetrix Electronics and suitable for automotive sensor modules, industrial CAN networks, and telecom line interface circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P4SMA30CAHE3/5A 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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for consistent clamping performance, AEC-Q101 compliance, and seamless integration into automated SMT production lines.
FAQ
What is the clamping voltage of P4SMA30CAHE3/5A at its rated peak pulse current?
The P4SMA30CAHE3/5A has a maximum clamping voltage (VC) of 41.4 V at 9.7 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is P4SMA30CAHE3/5A suitable for automotive applications?
Yes, P4SMA30CAHE3/5A is AEC-Q101 qualified (confirmed by HE3 suffix), tested for high-temperature operation up to 150 °C junction temperature, and validated for mechanical shock, temperature cycling, and humidity exposure per automotive reliability standards - making it appropriate for engine control units, body electronics, and ADAS sensor interfaces.
Does P4SMA30CAHE3/5A have polarity markings?
No, P4SMA30CAHE3/5A is a bidirectional TVS diode and carries no polarity marking on the SMA (DO-214AC) package. Its symmetrical construction allows installation in either orientation across protected lines - simplifying layout and eliminating risk of reverse installation errors in production.
What is the thermal resistance of P4SMA30CAHE3/5A, and how does it affect design?
P4SMA30CAHE3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 5.0 mm × 5.0 mm copper pads. This value determines safe power derating above 25 °C ambient; for example, at 85 °C ambient, maximum continuous power must be reduced to ~1.7 W to maintain TJ ≤ 150 °C - essential for sustained surge duty cycles.
How does the P4SMA30CAHE3/5A differ from unidirectional P4SMA30A variants?
Unlike unidirectional P4SMA30A (which has a cathode band and conducts only in reverse bias), P4SMA30CAHE3/5A provides symmetrical clamping in both directions - ideal for AC signals, differential buses, or floating nodes. It also omits the cathode marking and exhibits identical VBR, VC, and PPPM specs in either polarity, whereas P4SMA30A cannot clamp forward surges.
P4SMA30CAHE3/5A 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):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 9.7A
- 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)
P4SMA30CAHE3/5A FAQ
1.How can I place an order for P4SMA30CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA30CAHE3/5A 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 P4SMA30CAHE3/5A reliable?
The price and inventory of P4SMA30CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA30CAHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA30CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA30CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA30CAHE3/5A?
P4SMA30CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA30CAHE3/5A 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 P4SMA30CAHE3/5A?
For technical support, including P4SMA30CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA30CAHE3/5A requirements.
6.How does Aetrix verify that P4SMA30CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA30CAHE3/5A 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 P4SMA30CAHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA30CAHE3/5A?
All P4SMA30CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA30CAHE3/5A, 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 P4SMA30CAHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA30CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA30CAHE3/5A Tags
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