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Vishay General Semiconductor - Diodes Division P4SMA91CAHE3/61
- Part No.:
- P4SMA91CAHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA91CAHE3/61.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,954
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Product details
Overview
P4SMA91CAHE3/61 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 and power lines. It features a 91 V breakdown voltage (VBR = 86.5–95.5 V at IT = 1.0 mA), 125 V maximum clamping voltage (VC) at 3.2 A peak pulse current (IPPM), and 400 W peak pulse power rating with 10/1000 µs waveform - rated at 300 W above 91 V per datasheet note (1). It is AEC-Q101 qualified and used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial electronics.
For engineers reviewing the P4SMA91CAHE3/61 datasheet, P4SMA91CAHE3/61 pinout, P4SMA91CAHE3/61 application, or P4SMA91CAHE3/61 equivalent, key selection criteria include bidirectional clamping capability, SMA (DO-214AC) package compatibility, 150 °C max junction temperature, low incremental surge resistance, and compliance with UL 497B and JESD201 Class 2 whisker testing.
Technical Context
The P4SMA91CAHE3/61 operates as a bidirectional avalanche diode, providing symmetrical clamping in both polarities without polarity marking. Its glass-passivated junction enables fast response time (<1 ns) and stable breakdown characteristics over temperature, with a VBR temperature coefficient of +0.106 %/°C.
It is rated for 3.3 W steady-state power dissipation on infinite heatsink at TA = 50 °C, with thermal resistance RθJA = 120 °C/W and RθJL = 30 °C/W. The device meets MSL Level 1 per J-STD-020 and supports reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 86.5 V / 95.5 V at IT = 1.0 mA - defines precise clamping onset threshold under standardized test conditions |
| VWM | 77.8 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 125 V at IPPM = 3.2 A (10/1000 µs) - peak clamped voltage seen by protected circuit during surge |
| PPPM | 400 W (300 W above 91 V) - transient energy absorption capacity under standard surge waveform |
| IPPM | 3.2 A - maximum non-repetitive surge current the device safely conducts without degradation |
| TJ max | +150 °C - maximum allowable junction temperature for reliable long-term operation |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 5.0 mm × 5.0 mm copper pad thermal requirement |
Pinout & Package
Package: SMA (DO-214AC), molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated leads solderable per J-STD-002 and JESD22-B102; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; symmetrical with cathode in bidirectional operation | One end of the avalanche junction - electrically interchangeable with cathode for AC transient suppression |
| Cathode | Current exit terminal in forward bias; symmetrical with anode in bidirectional operation | Other end of the avalanche junction - no band marking; terminals are functionally identical in bidirectional mode |
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) | Supports robust surge immunity per IEC 61000-4-5 Level 4 when mounted per recommended 5.0 mm × 5.0 mm copper pads |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD performance |
| Low incremental surge resistance | Minimizes VC – VBR overshoot during fast transients, improving protection margin for sensitive downstream ICs |
| MSL Level 1, 260 °C peak reflow | Enables compatibility with standard lead-free SMT assembly processes without preconditioning |
Applications
| Automotive Sensor Signal Protection | Industrial CAN Bus Line Protection |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential sensor outputs to clamp ±100 V transients within <1 ns. Use Value: Prevents latch-up or gate oxide damage in downstream op-amps and ADC inputs while maintaining signal integrity below 77.8 V normal operation. |
Use Scenario: Safeguarding CAN_H/CAN_L lines in factory automation PLCs against ESD and inductive switching noise from solenoid drivers. IC Role / Device Role / Timing Role: Paired P4SMA91CAHE3/61 devices (one per line) suppress common-mode surges up to ±300 V without affecting 1 Mbps CAN signaling. Use Value: Maintains bus uptime by limiting clamped voltage to 125 V during 3.2 A transients, well below CAN transceiver absolute max ratings. |
| Telecom Power Rail Clamp | Consumer USB Port ESD Suppression |
|
Use Scenario: Secondary-side transient suppression on 48 V DC telecom power distribution boards subject to lightning-induced surges. IC Role / Device Role / Timing Role: Parallel-mounted TVS on +48 V rail to shunt 400 W surges away from DC-DC converters and PMICs. Use Value: Limits rail collapse to ≤125 V during 10/1000 µs events, preserving hold-up time and preventing brownout resets. |
Use Scenario: Board-level ESD protection for USB 2.0 data lines (D+/D−) in smart home hubs subjected to IEC 61000-4-2 ±8 kV contact discharge. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp (CJ ≈ 50 pF typical at VWM) placed directly at connector. Use Value: Clamps ESD pulses to <125 V within nanoseconds while adding <0.5 pF parasitic capacitance per line - no signal integrity impact at 480 Mbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90CA | Higher VBR (85.5–94.5 V), same VC (125 V), but SMB package (DO-214AA) - 20 % larger footprint, 10 % higher RθJA | Preferred where board space allows larger pad layout and higher thermal mass is needed for repetitive surges | Select SMBJ90CA only if existing layout accommodates SMB outline and thermal derating margins require lower junction rise |
| 1.5KE91CA | Through-hole TO-218 package, 1500 W PPPM, but slower response (>5 ns) and no AEC-Q101 qualification | Suitable for non-automotive, high-energy industrial mains protection where SMT is not required | Choose 1.5KE91CA only for legacy through-hole designs or where >1 kW surge handling outweighs SMT assembly benefits |
Compared with SMBJ90CA and 1.5KE91CA, the P4SMA91CAHE3/61 delivers AEC-Q101 reliability in the smallest surface-mount form factor (SMA), enabling compact automotive and portable designs while maintaining identical clamping performance at 125 V - critical for protecting modern low-voltage ICs without sacrificing surge margin.
Availability
P4SMA91CAHE3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN networks, telecom power rails, and consumer USB port protection requiring stable component supply and AEC-Q101 traceability.
Supply support for P4SMA91CAHE3/61 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 performance.
The P4SMA series was developed to deliver high-power, low-profile transient suppression for automotive, industrial, and telecom systems where AEC-Q101 compliance, tight VBR tolerance, and consistent clamping are mandatory.
FAQ
What is the breakdown voltage range for P4SMA91CAHE3/61?
The P4SMA91CAHE3/61 has a specified breakdown voltage (VBR) range of 86.5 V to 95.5 V at a test current (IT) of 1.0 mA. This range reflects manufacturing tolerance and ensures predictable clamping behavior across production lots while remaining centered on the nominal 91 V rating. The value is measured under controlled conditions per ANSI/IEEE C62.35 standards.
Is P4SMA91CAHE3/61 suitable for automotive applications?
Yes, P4SMA91CAHE3/61 is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix. It undergoes stress testing including temperature cycling, high-temperature reverse bias, and ESD per AEC requirements, making it appropriate for engine control units, ADAS sensor interfaces, and infotainment power rails where reliability under harsh conditions is essential.
What does the "CA" suffix indicate in P4SMA91CAHE3/61?
The "CA" suffix in P4SMA91CAHE3/61 denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P4SMA91A), it has no cathode marking and functions identically regardless of terminal orientation, simplifying layout for AC or floating signal lines.
What is the maximum clamping voltage of P4SMA91CAHE3/61 under surge conditions?
The maximum clamping voltage (VC) of P4SMA91CAHE3/61 is 125 V when subjected to its rated peak pulse current (IPPM) of 3.2 A using the standard 10/1000 µs waveform. This value represents the highest voltage that will appear across the protected circuit during a worst-case transient, ensuring downstream components remain within safe operating limits.
Does P4SMA91CAHE3/61 require special PCB layout considerations?
Yes - P4SMA91CAHE3/61 must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve its rated 400 W peak pulse power. Smaller pads cause thermal overload and premature failure. Additionally, short, direct traces to protected nodes minimize inductance and preserve sub-nanosecond response; ground paths must be low-impedance to avoid voltage overshoot during surge conduction.
P4SMA91CAHE3/61 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):
- 77.8V
- Voltage - Breakdown (Min):
- 86.5V
- Voltage - Clamping (Max) @ Ipp:
- 125V
- Current - Peak Pulse (10/1000µs):
- 3.2A
- 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)
P4SMA91CAHE3/61 FAQ
1.How can I place an order for P4SMA91CAHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA91CAHE3/61 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 P4SMA91CAHE3/61 reliable?
The price and inventory of P4SMA91CAHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA91CAHE3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA91CAHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA91CAHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA91CAHE3/61?
P4SMA91CAHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA91CAHE3/61 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 P4SMA91CAHE3/61?
For technical support, including P4SMA91CAHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA91CAHE3/61 requirements.
6.How does Aetrix verify that P4SMA91CAHE3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA91CAHE3/61 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 P4SMA91CAHE3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA91CAHE3/61?
All P4SMA91CAHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA91CAHE3/61, 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 P4SMA91CAHE3/61 part is unused and in its original packaging.
Return procedure for P4SMA91CAHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA91CAHE3/61 Tags
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