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Vishay General Semiconductor - Diodes Division P6KE9.1HE3/73
- Part No.:
- P6KE9.1HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE9.1HE3/73.pdf
- Description:
- TVS DIODE 7.37VWM 13.8VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,848
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Product details
Overview
P6KE9.1HE3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection on DC power rails and signal lines. It features a 9.1 V nominal breakdown voltage (VBR = 8.65–9.55 V at IT = 1.0 mA), 13.4 V maximum clamping voltage at 44.8 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive body control modules, industrial sensor interfaces, and USB power input stages.
For engineers reviewing the P6KE9.1HE3/73 datasheet, P6KE9.1HE3/73 pinout, P6KE9.1HE3/73 application, or P6KE9.1HE3/73 equivalent, key selection criteria include its AEC-Q101 qualification, DO-204AC (DO-15) package compatibility, 7.78 V stand-off voltage (VWM), 50 μA max reverse leakage at VWM, and thermal resistance of 20 °C/W junction-to-lead - critical for surge robustness in space-constrained 12 V automotive subsystems.
Technical Context
The P6KE9.1HE3/73 operates as a unidirectional avalanche-clamping device with glass-passivated junction, enabling sub-nanosecond response to ESD and lightning-induced transients. Its 10/1000 μs waveform rating reflects standardized surge immunity testing per IEC 61000-4-5, and it exhibits 0.068 %/°C temperature coefficient of VBR, ensuring stable clamping across –55 °C to +175 °C operating range.
Designed for single-pulse transient suppression rather than continuous power dissipation, it delivers 5.0 W steady-state power dissipation on infinite heatsink at TL = 75 °C and withstands 100 A non-repetitive forward surge (8.3 ms half-sine). Its 20 °C/W RθJL supports direct PCB trace heat sinking without auxiliary copper pours in low-power applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 8.65 V / 9.55 V at IT = 1.0 mA - defines reliable avalanche initiation threshold under controlled test conditions |
| VWM | 7.78 V - maximum continuous reverse working voltage before leakage exceeds 50 μA |
| VC @ IPPM | 13.4 V at 44.8 A - clamped voltage during 600 W transient, limiting downstream IC stress |
| IPPM | 44.8 A - peak pulse current capability with 10/1000 μs waveform, derated above 25 °C |
| RθJL | 20 °C/W - enables thermal design using lead-to-PCB conduction path, not ambient convection |
| TJ max. | +175 °C - supports under-hood automotive placement without derating in most mechanical layouts |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, molded epoxy case meeting UL 94 V-0. Cathode indicated by color band; matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to protected circuit ground or low-side reference; carries full surge current during clamping |
| Cathode | Avalanche breakdown node / high-voltage terminal | Connected to line being protected (e.g., 12 V rail); voltage clamps to ≤13.4 V when transients exceed VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress |
| 600 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) in properly filtered circuits |
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, high-temp reverse bias, and mechanical shock |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage margin required for protected ICs - e.g., allows 16 V-rated LDOs on 12 V rail |
| DO-204AC package with 20 °C/W RθJL | Permits direct thermal coupling to PCB copper via leads - no thermal pad or vias needed for <5 W average dissipation |
Applications
| Automotive Body Control Module (BCM) | Industrial RS-485 Interface Protection |
|---|---|
Use Scenario: 12 V supply rail exposed to load-dump transients up to 35 V and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary clamping device placed upstream of DC-DC converter input. Use Value: Limits rail voltage to ≤13.4 V during 44.8 A surge, preventing MOSFET gate oxide rupture and regulator latch-up. |
Use Scenario: RS-485 transceiver bus lines subjected to ESD ±15 kV contact discharge and cable-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS on VCC line and bidirectional pair on differential data lines (using CA variant). Use Value: Clamps VCC to safe level before transceiver internal LDO fails, preserving communication integrity during factory ESD events. |
| USB Type-A Power Input Stage | Consumer Appliance Motor Driver Supply |
Use Scenario: 5 V USB power input connected to wall adapter with poor transient suppression. IC Role / Device Role / Timing Role: Standoff protection on VBUS line ahead of USB controller and charging IC. Use Value: Blocks >7.78 V transients while maintaining <50 μA leakage at 5 V - avoids false overvoltage shutdowns. |
Use Scenario: 24 V DC supply feeding brushed motor driver ICs in washing machine control board. IC Role / Device Role / Timing Role: Rail clamp on motor driver VDD input to absorb inductive kickback from relay switching. Use Value: Absorbs 600 W energy within 1 ms, preventing driver IC destruction without requiring active crowbar circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A-E3/52 | Lower 600 W rating but SMB package (smaller footprint); VBR = 10.0–11.1 V; VC = 14.4 V @ 41.7 A | Preferred where board area is constrained and 14.4 V clamping is acceptable for protected ICs | Select SMBJ9.0A-E3/52 for surface-mount designs needing reduced height and automated assembly compatibility |
| 1.5KE9.1A | Same DO-15 package but higher 1500 W rating; VBR = 8.65–9.55 V; VC = 14.4 V @ 104 A; larger junction capacitance | Suitable for higher-energy surges (e.g., 10/1000 μs 1.5 kW tests) where layout permits larger thermal mass | Choose 1.5KE9.1A when system-level surge testing requires >600 W headroom and PCB thermal design supports higher IPPM |
Compared with SMBJ9.0A-E3/52, P6KE9.1HE3/73 offers lower profile axial mounting and superior thermal conduction via leads; versus 1.5KE9.1A, it provides tighter clamping (13.4 V vs. 14.4 V) at lower surge energy - optimizing protection for cost-sensitive automotive and industrial 12 V systems.
Availability
P6KE9.1HE3/73 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, USB power input protection, and appliance motor control systems requiring stable component supply with AEC-Q101 assurance.
Supply support for P6KE9.1HE3/73 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 and application-specific performance.
The P6KE series was engineered for cost-effective, high-surge-capability transient protection in space-constrained DC power and signal lines - targeting automotive, industrial, and consumer applications where AEC-Q101 compliance and DO-15 manufacturability are essential.
FAQ
What is the breakdown voltage tolerance of P6KE9.1HE3/73?
The P6KE9.1HE3/73 has a specified breakdown voltage range of 8.65 V to 9.55 V at test current IT = 1.0 mA, representing ±5.5 % tolerance around the nominal 9.1 V rating. This tolerance is verified per ANSI/IEEE C62.35 and ensures consistent clamping behavior across production lots. The P6KE9.1HE3/73 maintains this specification across its full operating temperature range of –55 °C to +175 °C.
Is P6KE9.1HE3/73 suitable for bi-directional transient suppression?
No, P6KE9.1HE3/73 is a unidirectional TVS diode - its cathode band indicates polarity, and it conducts only in reverse breakdown. For bi-directional protection, Vishay specifies the CA-suffix variant (e.g., P6KE9.1CA). Using P6KE9.1HE3/73 on AC or differential lines without external polarity control risks forward conduction and failure. Always verify polarity alignment in schematic capture for P6KE9.1HE3/73.
What does the 'HE3' suffix indicate in P6KE9.1HE3/73?
The 'HE3' suffix in P6KE9.1HE3/73 denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. It distinguishes this automotive-grade version from commercial 'E3' variants (e.g., P6KE9.1A-E3/73), which lack AEC-Q101 validation. The '73' denotes tape-and-reel packaging per Vishay's ordering code - specifically 750 units per reel in 13" diameter paper tape.
How does P6KE9.1HE3/73 perform under repeated surge stress?
P6KE9.1HE3/73 is rated for repetitive surges at 0.01 % duty cycle (1 pulse per 10,000), meaning it can sustain 600 W peaks only infrequently. Under repeated stress, junction temperature rise must be managed via PCB copper area and airflow. Its 20 °C/W RθJL allows effective heat transfer to traces, but sustained >1 Hz pulsing requires derating per Figure 2 in the datasheet. P6KE9.1HE3/73 is not intended for continuous clamping operation.
Can P6KE9.1HE3/73 replace P6KE9.1A in existing designs?
Yes, P6KE9.1HE3/73 is a direct replacement for P6KE9.1A in terms of electrical parameters, package (DO-204AC), and pinout - with added AEC-Q101 qualification and enhanced whisker resistance. No PCB or schematic changes are required. However, due to its automotive qualification, P6KE9.1HE3/73 may carry different traceability, lot documentation, and screening requirements that must be aligned with your quality management system.
P6KE9.1HE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7.37V
- Voltage - Breakdown (Min):
- 8.19V
- Voltage - Clamping (Max) @ Ipp:
- 13.8V
- Current - Peak Pulse (10/1000µs):
- 43.5A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
P6KE9.1HE3/73 FAQ
1.How can I place an order for P6KE9.1HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE9.1HE3/73 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 P6KE9.1HE3/73 reliable?
The price and inventory of P6KE9.1HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE9.1HE3/73 is usually 5 days.
3.What payment methods are accepted for P6KE9.1HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE9.1HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE9.1HE3/73?
P6KE9.1HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE9.1HE3/73 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 P6KE9.1HE3/73?
For technical support, including P6KE9.1HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE9.1HE3/73 requirements.
6.How does Aetrix verify that P6KE9.1HE3/73 is sourced from the original manufacturer or authorized distributors?
All P6KE9.1HE3/73 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 P6KE9.1HE3/73 meets industry standards.
7.What is the process for return or replacement of P6KE9.1HE3/73?
All P6KE9.1HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P6KE9.1HE3/73, 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 P6KE9.1HE3/73 part is unused and in its original packaging.
Return procedure for P6KE9.1HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE9.1HE3/73 Tags
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