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Vishay General Semiconductor - Diodes Division P4SMA39CAHE3/61
- Part No.:
- P4SMA39CAHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA39CAHE3/61.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA39CAHE3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P4SMA series, designed for clamping voltage transients on signal or power lines. It features a 33.3 V standoff voltage (VWM), 37.1–41.0 V breakdown voltage (VBR) at 1 mA, 53.9 V maximum clamping voltage (VC) at 7.4 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 systems.
For engineers reviewing the P4SMA39CAHE3/61 datasheet, P4SMA39CAHE3/61 pinout, P4SMA39CAHE3/61 application, or P4SMA39CAHE3/61 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMA (DO-214AC) package compatibility, and thermal resistance (RθJA = 120 °C/W) for board-level transient suppression in space-constrained designs.
Technical Context
The P4SMA39CAHE3/61 operates as a bidirectional avalanche diode, conducting symmetrically in both polarities above its breakdown threshold to clamp transient overvoltages. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM), while the 10/1000 µs surge rating reflects standardized lightning and inductive-switching immunity testing.
Designed for surface-mount assembly on 5.0 mm × 5.0 mm copper pads per terminal, it delivers 400 W peak pulse power up to 91 V and derates to 300 W above that threshold. The device meets MSL Level 1 per J-STD-020 and supports reflow soldering at 260 °C peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 33.3 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 37.1–41.0 V at 1 mA - Verified avalanche onset range; ensures predictable turn-on during transients without premature conduction. |
| VC (Clamping Voltage) | 53.9 V at 7.4 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; critical for downstream component voltage tolerance. |
| PPPM (Peak Pulse Power) | 400 W - Sustained transient energy absorption capacity under standard 10/1000 µs waveform; enables robust protection against IEC 61000-4-5 surges. |
| RθJA (Junction-to-Ambient) | 120 °C/W - Thermal resistance defining temperature rise per watt dissipated; informs layout requirements for thermal management. |
| TJmax | 150 °C - Maximum allowable junction temperature; sets upper limit for ambient + self-heating in continuous operation. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; required for under-hood and ADAS applications. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking - symmetrical anode/cathode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (bidirectional) | Transient conduction path | Identical electrical behavior in both directions; connects across protected line and ground (or between differential lines) without orientation dependency. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns - reduces BOM count vs. dual unidirectional TVS. |
| 400 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity in compact SMA footprint - suitable for CAN, LIN, and sensor interface protection. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive environments including temperature cycling (-40 °C to +125 °C), humidity, and mechanical shock - approved for safety-critical ECUs. |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<1 µA at VWM) over lifetime - improves long-term reliability in harsh industrial settings. |
| MSL Level 1, 260 °C reflow compatible | Eliminates moisture sensitivity handling requirements and supports standard lead-free reflow profiles - simplifies manufacturing and reduces yield risk. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting analog voltage outputs (e.g., 0–5 V throttle position sensors) from load dump and inductive kickback in engine control modules. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between sensor output and ground, limiting transient excursions to ≤53.9 V. Use Value: Prevents latch-up or permanent damage to 5 V rail-tolerant ADC inputs while maintaining signal integrity during 100 V/500 ms load dump events. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Parallel-connected TVS across input terminal and common rail, clamping transients within 1 ns response time. Use Value: Enables reliable operation under IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) compliance without external series impedance. |
| Telecom Line Interface | Consumer Appliance Motor Control |
|
Use Scenario: Shielding RS-485 transceiver pins in base station backhaul equipment from lightning-induced common-mode surges on twisted-pair lines. IC Role / Device Role / Timing Role: Differential-mode TVS pair (one per line) referenced to local ground, leveraging bidirectional symmetry for polarity-agnostic protection. Use Value: Maintains signal eye diagram integrity during 400 W transient events while adding <1 pF junction capacitance - negligible impact on 10 Mbps data rates. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: Mounted across motor terminals to absorb inductive energy during PWM switching transitions. Use Value: Extends MOSFET lifespan by limiting drain-source voltage overshoot to 53.9 V, avoiding avalanche stress beyond rated 60 V devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA | Higher VWM (33 V vs. 33.3 V), same VC (53.3 V), larger SMB (DO-214AA) package (4.58 mm × 3.94 mm vs. 4.93 mm × 3.99 mm). | Lower power density (600 W vs. 400 W) but higher surge current rating (11.8 A); better suited for high-energy, lower-frequency transients. | Select when PCB layout allows larger footprint and higher IPPM is prioritized over space constraints. |
| 1.5KE39CA | Through-hole DO-201 package, 1500 W peak power, VC = 60.2 V at 25 A - significantly higher clamping voltage and physical size. | Designed for primary-side AC line protection; not suitable for signal-line or dense SMT layouts. | Choose only for legacy through-hole designs requiring higher energy handling where board real estate is not constrained. |
Compared with SMBJ33CA and 1.5KE39CA, the P4SMA39CAHE3/61 offers optimal balance of AEC-Q101 qualification, compact SMA footprint, and precise 33.3 V standoff for modern automotive and industrial SMT systems - enabling direct integration into sensor nodes and controller boards without redesign.
Availability
P4SMA39CAHE3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer appliance motor drives requiring stable component supply with full traceability and lifecycle continuity.
Supply support for P4SMA39CAHE3/61 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, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The P4SMA series was developed to deliver high-power transient suppression in ultra-compact surface-mount packages for automotive, industrial, and communications systems where space, thermal performance, and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of the P4SMA39CAHE3/61 under a 10/1000 µs surge?
The P4SMA39CAHE3/61 has a maximum clamping voltage (VC) of 53.9 V at 7.4 A peak pulse current with a 10/1000 µs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuits during transient events - critical for ensuring downstream components remain within their absolute maximum ratings. The P4SMA39CAHE3/61 maintains this clamping performance across its specified operating temperature range.
Is the P4SMA39CAHE3/61 suitable for automotive applications?
Yes, the P4SMA39CAHE3/61 is AEC-Q101 qualified (indicated by the HE3 suffix) and specifically validated for automotive use, including engine control units, body electronics, and ADAS sensor interfaces. It meets stringent requirements for temperature cycling, humidity resistance, and mechanical shock. The P4SMA39CAHE3/61 also complies with MSL Level 1 and supports lead-free reflow at 260 °C - essential for modern automotive manufacturing.
How does the bidirectional design of the P4SMA39CAHE3/61 affect its placement on the PCB?
The P4SMA39CAHE3/61 has no polarity marking and functions identically in both directions, so it can be placed across any two nodes requiring symmetrical overvoltage protection - such as differential signal pairs or AC-coupled lines - without orientation constraints. This eliminates assembly errors and simplifies layout compared to unidirectional TVS diodes. The P4SMA39CAHE3/61 uses the SMA (DO-214AC) package with 5.0 mm × 5.0 mm recommended copper pads per terminal for thermal performance.
What is the maximum steady-state power dissipation of the P4SMA39CAHE3/61?
The P4SMA39CAHE3/61 has a maximum steady-state power dissipation (PD) of 3.3 W at TA = 50 °C on an infinite heatsink. In typical PCB applications with 5.0 mm × 5.0 mm copper pads per terminal, derating applies above 25 °C ambient - e.g., ~2.5 W at 70 °C. This rating governs continuous leakage-based heating and must be considered alongside transient duty cycle to avoid thermal runaway. The P4SMA39CAHE3/61's RθJA of 120 °C/W directly informs thermal design margins.
Does the P4SMA39CAHE3/61 meet RoHS and halogen-free requirements?
Yes, the P4SMA39CAHE3/61 is RoHS-compliant and halogen-free, as confirmed by the HE3 suffix designation per Vishay's ordering nomenclature. It meets JEDEC J-STD-020 MSL Level 1 and passes JESD 201 Class 2 whisker testing. The molding compound is UL 94 V-0 rated, and all materials comply with Vishay's material categorization standard (Doc. #99912). The P4SMA39CAHE3/61 is certified for commercial and automotive-grade use without restriction.
P4SMA39CAHE3/61 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):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 7.4A
- 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)
P4SMA39CAHE3/61 FAQ
1.How can I place an order for P4SMA39CAHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA39CAHE3/61 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 P4SMA39CAHE3/61 reliable?
The price and inventory of P4SMA39CAHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA39CAHE3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA39CAHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA39CAHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA39CAHE3/61?
P4SMA39CAHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA39CAHE3/61 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 P4SMA39CAHE3/61?
For technical support, including P4SMA39CAHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA39CAHE3/61 requirements.
6.How does Aetrix verify that P4SMA39CAHE3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA39CAHE3/61 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 P4SMA39CAHE3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA39CAHE3/61?
All P4SMA39CAHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA39CAHE3/61, 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 P4SMA39CAHE3/61 part is unused and in its original packaging.
Return procedure for P4SMA39CAHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA39CAHE3/61 Tags
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