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Vishay General Semiconductor - Diodes Division P4SMA36CAHE3/5A
- Part No.:
- P4SMA36CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA36CAHE3/5A.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,558
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Product details
Overview
P4SMA36CAHE3/5A 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 or power lines. It features a 36 V standoff voltage (VWM), 40.9–45.2 V breakdown voltage (VBR) at 1 mA, 49.9 V maximum clamping voltage (VC) at 8.0 A peak pulse current (IPPM), and 400 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the P4SMA36CAHE3/5A datasheet, P4SMA36CAHE3/5A pinout, P4SMA36CAHE3/5A application, or P4SMA36CAHE3/5A equivalent, this device is selected for robust ESD and surge protection in automotive-grade sensor interfaces, industrial I/O lines, and telecom data lines where AEC-Q101 qualification, low clamping ratio, and bidirectional symmetry are required.
Technical Context
The P4SMA36CAHE3/5A operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while its MSL Level 1 rating supports lead-free reflow up to 260 °C.
It delivers 400 W peak pulse power (derated to 300 W above 91 V) under 10/1000 µs waveform, with thermal resistance of 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead), enabling reliable operation in compact PCB layouts with minimal copper pad area (0.2" × 0.2").
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 30.8 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 34.2–37.8 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 49.9 V at 8.0 A IPPM - Peak voltage seen by protected circuit during 10/1000 µs surge; determines downstream component stress. |
| PPPM (Peak Pulse Power) | 400 W - Sustains single high-energy surges per IEC 61000-4-5; derates linearly above 25 °C ambient. |
| IR (Reverse Leakage) | <1.0 µA at VWM - Minimal standby power loss and signal integrity impact in high-impedance circuits. |
| TJ max | 150 °C - Maximum junction temperature; enables use in under-hood automotive and industrial environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD HBM/MM. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H), matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | One terminal of symmetrical PN junction; conducts during negative-going surges. |
| Cathode | Transient current entry (positive polarity) | Other terminal of symmetrical PN junction; conducts during positive-going surges. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 400 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial and automotive ports. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control modules, ADAS sensors, and body electronics. |
| Low clamping ratio (VC/VBR ≈ 1.32) | Minimizes overvoltage stress on downstream ICs compared to higher-ratio TVS devices. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture sensitivity handling. |
Applications
| Automotive Sensor Interface | Industrial RS-485 Bus Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential pair or supply rail to limit transient excursions. Use Value: Prevents latch-up or damage to 3.3 V/5 V microcontrollers and analog front-ends during 12 V/24 V system transients. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs against EFT bursts and lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Parallel-connected TVS on A/B lines and common-mode rail to shunt energy before transceiver input stages. Use Value: Maintains communication integrity under IEC 61000-4-4 (4 kV EFT) and IEC 61000-4-5 (2 kV surge) without signal distortion. |
| Telecom Data Line Protection | Consumer USB Port ESD Suppression |
Use Scenario: Shielding Ethernet PHYs, DSL line drivers, and PoE injectors from induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp across differential pairs to suppress common- and differential-mode transients. Use Value: Limits clamped voltage to <50 V, preserving PHY tolerance margins while meeting GR-1089-CORE surge compliance. |
Use Scenario: Adding secondary-level surge protection to USB 2.0 data lines and VBUS in set-top boxes and smart displays. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after primary ESD array to handle higher-energy events beyond HBM/CDM limits. Use Value: Extends system-level robustness to 8 kV contact / 15 kV air discharge per IEC 61000-4-2 without degrading 480 Mbps signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA | Higher 600 W PPPM rating; larger SMB (DO-214AA) package; 52.0 V VC at 10.3 A IPPM. | Better suited for higher-energy surges but requires more board space and has higher thermal mass. | Select when surge energy exceeds 400 W or when legacy SMB footprint is standardized. |
| 1.5KE36CA | Through-hole TO-218 package; 1500 W PPPM; 58.1 V VC at 25.8 A IPPM; higher capacitance. | Designed for mains-side or high-power DC rail protection, not signal-line use. | Choose only for non-SMT designs requiring extreme energy handling, not for space-constrained PCBs. |
Compared with SMBJ36CA and 1.5KE36CA, the P4SMA36CAHE3/5A offers optimal balance of AEC-Q101 qualification, SMA footprint compatibility, and precise 49.9 V clamping-making it preferred for automotive and industrial surface-mount signal-line protection where board area and reliability are critical.
Availability
P4SMA36CAHE3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, telecom data lines, and consumer USB port protection requiring stable component supply and AEC-Q101 traceability.
Supply support for P4SMA36CAHE3/5A 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 supplier of discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability and automotive qualification.
The P4SMA Series targets cost-effective, high-volume transient suppression in automotive, industrial, and telecom applications-designed for automated placement, low-profile mounting, and consistent clamping performance across temperature.
FAQ
What is the clamping voltage of P4SMA36CAHE3/5A at its rated peak pulse current?
The P4SMA36CAHE3/5A has a maximum clamping voltage (VC) of 49.9 V at 8.0 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88367 and defines the upper voltage limit imposed on protected circuitry during surge events. The P4SMA36CAHE3/5A maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C).
Is P4SMA36CAHE3/5A suitable for automotive applications?
Yes, P4SMA36CAHE3/5A is AEC-Q101 qualified (indicated by the HE3 suffix) and tested for automotive reliability including high-temperature operating life, temperature cycling, and ESD. It is specified for use in engine control units, ADAS sensors, and body electronics where bidirectional transient suppression and extended temperature operation are required. The P4SMA36CAHE3/5A meets all stress test criteria defined in the AEC-Q101 standard.
What does the "CA" suffix mean in P4SMA36CAHE3/5A?
The "CA" suffix in P4SMA36CAHE3/5A denotes a bidirectional configuration-meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P4SMA36A), the CA version has no cathode band marking and functions identically in either polarity. This makes the P4SMA36CAHE3/5A ideal for protecting AC-coupled lines, differential buses, or floating references.
What is the standoff voltage (VWM) of P4SMA36CAHE3/5A, and why is it important?
The standoff voltage (VWM) of P4SMA36CAHE3/5A is 30.8 V-this is the maximum continuous reverse voltage the device can withstand without entering breakdown. It ensures normal circuit operation remains undisturbed while providing sufficient margin below the 34.2–37.8 V breakdown range. Selecting a VWM ≥10–20% above the system's maximum steady-state voltage prevents false triggering and leakage-related power loss in the P4SMA36CAHE3/5A.
How does the P4SMA36CAHE3/5A differ from the P4SMA36A variant?
The P4SMA36CAHE3/5A is bidirectional with symmetrical clamping in both polarities and no polarity marking, whereas the P4SMA36A is unidirectional with a cathode band and only clamps positive transients. Both share identical VWM (30.8 V), VBR (34.2–37.8 V), and VC (49.9 V), but the P4SMA36CAHE3/5A supports AC or floating signal protection, while the P4SMA36A is used on DC rails or grounded references. The HE3 suffix confirms AEC-Q101 qualification for both.
P4SMA36CAHE3/5A 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):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 8A
- 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)
P4SMA36CAHE3/5A FAQ
1.How can I place an order for P4SMA36CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA36CAHE3/5A 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 P4SMA36CAHE3/5A reliable?
The price and inventory of P4SMA36CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA36CAHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA36CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA36CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA36CAHE3/5A?
P4SMA36CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA36CAHE3/5A 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 P4SMA36CAHE3/5A?
For technical support, including P4SMA36CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA36CAHE3/5A requirements.
6.How does Aetrix verify that P4SMA36CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA36CAHE3/5A 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 P4SMA36CAHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA36CAHE3/5A?
All P4SMA36CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA36CAHE3/5A, 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 P4SMA36CAHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA36CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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