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Vishay General Semiconductor - Diodes Division P4SMA36CAHE3_A/H
- Part No.:
- P4SMA36CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA36CAHE3_A/H.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,170
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Product details
Overview
P4SMA36CAHE3_A/H 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 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, and 400 W peak pulse power capability with a 10/1000 µs waveform - used in automotive sensor interfaces, industrial I/O protection, and telecom line surge suppression.
For engineers reviewing the P4SMA36CAHE3_A/H datasheet, P4SMA36CAHE3_A/H pinout, P4SMA36CAHE3_A/H application, or P4SMA36CAHE3_A/H equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification, SMA (DO-214AC) package thermal performance, and compliance with UL 497B for telecom protector classification.
Technical Context
The P4SMA36CAHE3_A/H operates as a bidirectional avalanche diode, delivering symmetrical clamping in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance under repetitive 10/1000 µs transients.
Rated for -65 °C to +150 °C operating junction temperature, it achieves 3.3 W steady-state power dissipation on infinite heatsink at 50 °C ambient and exhibits 120 °C/W typical junction-to-ambient thermal resistance when mounted on standard 0.2" × 0.2" copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 30.8 V - maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 34.2–37.8 V at 1 mA - guaranteed avalanche initiation range; ensures predictable turn-on during overvoltage events |
| VC (Clamping Voltage) | 49.9 V at 8.0 A IPPM - peak voltage seen by protected circuit during 10/1000 µs surge; critical for downstream IC survivability |
| PPPM (Peak Pulse Power) | 400 W - energy-handling capacity for standardized 10/1000 µs waveform; supports robust transient immunity per IEC 61000-4-5 |
| ID (Reverse Leakage) | 1.0 µA max at VWM - ultra-low standby current preserves signal integrity and minimizes power loss in high-impedance circuits |
| TJ max | +150 °C - enables operation in under-hood automotive and industrial environments without derating at full power |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; required for ASIL-B sensor subsystems |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating and MSL level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node in bidirectional configuration | No functional polarity distinction - terminals are electrically symmetric; no cathode band marking |
| Cathode | Current exit terminal in forward bias; common node in bidirectional configuration | Identical to Anode in bidirectional operation; device functions identically regardless of orientation on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | Equal VBR min/max and VC in both directions - eliminates need for orientation-aware layout in differential or AC-coupled lines |
| AEC-Q101 qualification | Validated for automotive electronics - supports deployment in engine control modules, ADAS camera links, and body electronics without additional qualification |
| 400 W peak pulse power (10/1000 µs) | Handles IEC 61000-4-5 Level 4 surges (4 kV line-earth) with margin when properly mounted on 5 mm × 5 mm copper pads |
| Low incremental surge resistance | Enables tight clamping window (VC − VBR ≈ 12.1 V) - reduces stress on downstream MOSFET gates and MCU I/O pins |
| MSL Level 1 moisture sensitivity | Zero bake requirement before reflow - compatible with standard SMT assembly lines without dry pack or floor-life management |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting CAN FD and LIN bus transceivers and Hall-effect sensor outputs from load dump and inductive switching transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential signal pair or supply rail to clamp ±50 V transients within 1 ns. Use Value: Prevents latch-up or gate oxide damage in automotive-grade transceivers while maintaining signal fidelity due to sub-1 pF junction capacitance at VWM. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and 0–10 V analog inputs in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input terminals, coordinated with series current-limiting resistors and filtering capacitors. Use Value: Enables >100,000 surge cycles without parameter drift, verified per AEC-Q101 stress tests - critical for factory automation uptime. |
| Telecom Line Interface Surge Suppression | Consumer Appliance Motor Drive Protection |
Use Scenario: Secondary protection on Ethernet PHY magnetics or DSL line drivers subjected to lightning-induced surges per ITU-T K.20/K.44. IC Role / Device Role / Timing Role: Fast-response shunt device placed after primary gas discharge tube (GDT), absorbing residual energy post-GDT conduction. Use Value: UL 497B recognized (QVGQ2 file E136766) - satisfies regulatory requirements for telecom infrastructure equipment safety certification. |
Use Scenario: Clamping commutation spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: Parallel-mounted across motor terminals or H-bridge outputs to suppress >100 V inductive kickback. Use Value: Withstands 40 A non-repetitive forward surge (IFSM) - survives repeated motor stall events without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA | Same VWM/VBR/VC specs but in larger SMB (DO-214AA) package; 600 W PPPM rating | Higher power handling suits higher-energy surge environments (e.g., outdoor telecom cabinets); requires larger PCB footprint | Select SMBJ36CA when system-level surge testing exceeds IEC 61000-4-5 Level 4 or when thermal mass demands lower RθJA |
| 1.5KE36CA | Through-hole DO-201 package; identical electrical specs but 1500 W PPPM (10/1000 µs); higher IFSM (200 A) | Used in legacy industrial power supplies and mains-connected equipment where automated SMT is not feasible | Choose 1.5KE36CA only for through-hole designs or where board-level repairability and manual replacement are prioritized over density |
Compared with SMBJ36CA and 1.5KE36CA, the P4SMA36CAHE3_A/H delivers optimal balance of AEC-Q101 compliance, compact SMA footprint, and 400 W surge capability - making it the preferred choice for space-constrained automotive and industrial SMT assemblies requiring certified reliability.
Availability
P4SMA36CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, and telecom line interface protection requiring stable component supply, long-term lifecycle support, and traceable AEC-Q101 qualified lots.
Supply support for P4SMA36CAHE3_A/H 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 validation.
The P4SMA series was engineered for high-volume, high-reliability transient suppression in automotive, industrial, and telecom applications - combining AEC-Q101 qualification, UL recognition, and optimized SMT manufacturability in the SMA package.
FAQ
What is the clamping voltage of the P4SMA36CAHE3_A/H at its rated peak pulse current?
The P4SMA36CAHE3_A/H 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 the Vishay datasheet 88367 and defines the upper voltage limit imposed on protected circuitry during surge events. The P4SMA36CAHE3_A/H maintains this clamping performance across its full operating temperature range of -65 °C to +150 °C.
Is the P4SMA36CAHE3_A/H suitable for automotive applications?
Yes, the P4SMA36CAHE3_A/H is AEC-Q101 qualified and carries the HE3 suffix denoting automotive-grade qualification. It undergoes stress testing including temperature cycling, highly accelerated life testing (HALT), and ESD per AEC-Q101 Rev D. The P4SMA36CAHE3_A/H is approved for use in engine control units, ADAS sensor modules, and body electronics where transient immunity and long-term reliability are mandatory.
Does the P4SMA36CAHE3_A/H have polarity markings on the package?
No, the P4SMA36CAHE3_A/H is a bidirectional TVS and carries no cathode band or polarity marking on the SMA (DO-214AC) case. Its symmetrical construction means either terminal may serve as anode or cathode depending on transient polarity - enabling orientation-agnostic placement on PCBs and simplifying layout for differential or AC-coupled signal paths.
What is the maximum steady-state power dissipation for the P4SMA36CAHE3_A/H?
The P4SMA36CAHE3_A/H has a maximum steady-state power dissipation (PD) of 3.3 W when mounted on an infinite heatsink at 50 °C ambient temperature. This rating assumes ideal thermal conditions; actual usable power in real-world layouts depends on copper pad area, layer count, and airflow. For typical 0.2" × 0.2" pad designs, derating per Figure 2 in datasheet 88367 is required above 25 °C ambient.
How does the P4SMA36CAHE3_A/H compare to unidirectional variants like P4SMA36AHE3_A/H?
The P4SMA36CAHE3_A/H differs from unidirectional P4SMA36AHE3_A/H solely in bidirectional functionality: it clamps transients of either polarity with matched VBR and VC, whereas the unidirectional version conducts only in reverse bias and requires correct orientation. Both share identical VWM (30.8 V), PPPM (400 W), and AEC-Q101 qualification. The P4SMA36CAHE3_A/H eliminates orientation errors in differential line protection but exhibits slightly higher leakage at zero bias.
P4SMA36CAHE3_A/H 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:
- Active
- 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_A/H FAQ
1.How can I place an order for P4SMA36CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA36CAHE3_A/H 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_A/H reliable?
The price and inventory of P4SMA36CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA36CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA36CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA36CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA36CAHE3_A/H?
P4SMA36CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA36CAHE3_A/H 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_A/H?
For technical support, including P4SMA36CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA36CAHE3_A/H requirements.
6.How does Aetrix verify that P4SMA36CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA36CAHE3_A/H 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_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA36CAHE3_A/H?
All P4SMA36CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA36CAHE3_A/H, 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_A/H part is unused and in its original packaging.
Return procedure for P4SMA36CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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