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Vishay General Semiconductor - Diodes Division P6KE91-E3/73
- Part No.:
- P6KE91-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE91-E3/73.pdf
- Description:
- TVS DIODE 73.7VWM 131VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,786
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Product details
Overview
P6KE91-E3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for primary overvoltage protection of DC power rails and signal lines. It features 600 W peak pulse power (10/1000 μs), 86.5 V minimum breakdown voltage, 95.5 V maximum breakdown voltage at 1 mA, 77.8 V standoff voltage, and clamps to ≤125 V at 4.8 A peak pulse current. It is widely used in automotive body electronics, industrial PLC I/O modules, and telecom power supply front-ends.
For engineers reviewing the P6KE91-E3/73 datasheet, P6KE91-E3/73 pinout, P6KE91-E3/73 application, or P6KE91-E3/73 equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under surge conditions, RoHS-compliant packaging details, and AEC-Q101 qualification status - all critical for ESD/surge protection circuit design and BOM validation.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: it remains high-impedance below 77.8 V (VWM) and rapidly avalanches above its 86.5–95.5 V (VBR) breakdown range to limit transient energy. Its 20 °C/W junction-to-lead thermal resistance enables effective heat dissipation during repetitive surges when mounted on PCB copper pours.
The device complies with AEC-Q101 stress testing for automotive use and meets UL 497B recognition (QVGQ2). Its glass-passivated junction ensures stable leakage (<1 μA at VWM) and low incremental surge resistance - key for consistent clamping across temperature and lifetime.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM Standoff Voltage | 77.8 V - Maximum continuous DC or RMS voltage the device blocks without conduction; sets upper limit for protected line operating voltage. |
| VBR Breakdown Voltage | 86.5 V min / 95.5 V max at 1 mA - Confirmed avalanche initiation range; defines onset of clamping action under transient stress. |
| VC Clamping Voltage | ≤125 V at 4.8 A (10/1000 μs) - Maximum voltage seen by downstream circuitry during worst-case surge; determines required IC withstand margin. |
| PPPM Peak Pulse Power | 600 W - Sustained surge energy handling capability per single 10/1000 μs waveform; validates suitability for IEC 61000-4-5 Level 3/4 threats. |
| IPPM Peak Pulse Current | 4.8 A - Corresponding surge current at VC; used with PCB trace impedance to estimate actual clamping level under system layout. |
| TJ Max Operating Temperature | +175 °C - Enables reliable operation in under-hood automotive or high-ambient industrial environments without thermal shutdown. |
| Leakage Current ID | ≤1.0 μA at VWM - Ensures negligible standby power loss and no interference with high-impedance sensor or bias networks. |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102. Cathode indicated by color band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest-potential node in unidirectional configuration; completes clamping path during positive transients. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., +12 V rail); avalanche conduction occurs from cathode to anode when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage over 10+ year field life, even under thermal cycling and humidity exposure. |
| 600 W peak pulse rating (10/1000 μs) | Validates robustness against IEC 61000-4-5 combination wave surges up to 2 kV open-circuit / 1 kA short-circuit. |
| AEC-Q101 qualified (HE3 variant) | Confirms reliability for automotive applications including engine control units, infotainment power supplies, and ADAS sensor interfaces. |
| UL 497B recognized (QVGQ2) | Supports safety-certified designs in telecom power systems and industrial Ethernet equipment requiring third-party surge protection validation. |
| RoHS-compliant, JESD201 Class 1A whisker tested (E3) | Enables lead-free reflow assembly and long-term interconnect reliability in consumer and computing power management circuits. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Module |
|---|---|
|
Use Scenario: Protecting 12 V supply rail from load-dump transients (ISO 7637-2 Pulse 5a) and alternator ripple-induced spikes. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between VIN and GND upstream of DC/DC converter input. Use Value: Limits rail voltage to ≤125 V during 120 V/350 ms load dump, preventing damage to LDOs and microcontrollers rated for 40 V absolute max. |
Use Scenario: Safeguarding 24 V digital input channels against induced surges from relay coil switching and nearby motor drives. IC Role / Device Role / Timing Role: Primary protection element before optocoupler input, absorbing fast-rising transients (tr < 1 ns). Use Value: Clamps 4 kV EFT bursts (IEC 61000-4-4) to <130 V within 1 ns, preserving optocoupler CMTI and enabling >100 kV/μs common-mode rejection. |
| Telecom Power Supply Front-End | Consumer Appliance Motor Drive Board |
|
Use Scenario: Secondary-side overvoltage suppression on +48 V telecom rectifier output feeding PoE injectors and baseband processors. IC Role / Device Role / Timing Role: Standoff-rated TVS parallel to bulk capacitor, triggered only during lightning-induced surges exceeding 77.8 V. Use Value: Absorbs 600 W surge energy without degradation, maintaining output regulation and avoiding false OVP shutdowns during transient events. |
Use Scenario: DC bus protection in BLDC motor controllers exposed to back-EMF spikes during commutation and brake regeneration. IC Role / Device Role / Timing Role: Clamp connected across H-bridge high-side FET source and rail, diverting inductive kickback away from gate drivers. Use Value: Limits VDS overshoot to ≤125 V, eliminating need for snubbers and reducing MOSFET SOA stress during 100 A peak currents. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90A | Same VWM (77.3 V), lower PPPM (600 W same), but SMC package (higher thermal mass, 1.5× footprint) | Better thermal performance in high-duty-cycle surge environments; less suitable for space-constrained PCB layouts. | Select SMBJ90A when board-level thermal management allows larger SMC footprint and higher sustained surge repetition is required. |
| 1.5KE91A | Identical VBR, VWM, and VC, but higher IFSM (200 A vs. 100 A) and DO-201AD package (longer leads, higher inductance) | Higher single-pulse surge margin; longer lead inductance degrades sub-ns response, limiting effectiveness against ESD/EFT. | Choose 1.5KE91A only for legacy designs where DO-201AD mechanical fit is mandatory and ESD immunity is not critical. |
Compared with SMBJ90A and 1.5KE91A, P6KE91-E3/73 offers optimal balance of compact DO-15 form factor, AEC-Q101 qualification, and validated 10/1000 μs clamping performance - making it preferred for new automotive and industrial designs where size, reliability, and standardized surge compliance are jointly prioritized.
Availability
P6KE91-E3/73 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O protection, telecom power supply front-ends, and consumer appliance motor drive boards requiring stable component supply and full traceability.
Supply support for P6KE91-E3/73 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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The P6KE series targets cost-sensitive yet robust overvoltage protection in commercial and automotive applications, delivering high-surge capability in minimal DO-15 footprint without compromising AEC-Q101 compliance or UL recognition.
FAQ
What is the maximum clamping voltage of the P6KE91-E3/73 under standard test conditions?
The P6KE91-E3/73 clamps to a maximum of 125 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 4.8 A. This value is measured per JEDEC standards and reflects worst-case voltage seen by downstream circuitry during surge events. The clamping voltage is guaranteed across the full operating temperature range (−55 °C to +175 °C), and the P6KE91-E3/73 maintains this performance without parameter drift due to its glass-passivated junction structure.
Is the P6KE91-E3/73 suitable for automotive applications?
Yes, the P6KE91-E3/73 is RoHS-compliant and manufactured to meet AEC-Q101 stress test requirements when ordered with the HE3 suffix. While the E3/73 variant is commercial-grade, its construction - including glass-passivated junction, UL 497B recognition, and 175 °C junction rating - supports deployment in non-safety-critical automotive subsystems such as body control modules, lighting drivers, and infotainment power rails. For full AEC-Q101 compliance, specify P6KE91HE3/73.
How does the P6KE91-E3/73 differ from bi-directional TVS diodes like P6KE91CA?
The P6KE91-E3/73 is unidirectional and functions only during positive transients relative to ground, with a cathode marking indicating polarity. In contrast, P6KE91CA is bi-directional and protects against both polarities without polarity marking. The unidirectional P6KE91-E3/73 offers lower leakage (<1 μA) and tighter VBR tolerance than its bi-directional counterpart, making it preferable for DC rail protection where reverse conduction must be avoided. Its forward voltage drop (VF = 3.5 V at 50 A) also enables use in crowbar-like fault detection schemes.
What is the thermal resistance profile of the P6KE91-E3/73, and how does it affect PCB layout?
The P6KE91-E3/73 has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W and junction-to-ambient (RθJA) of 75 °C/W. To maintain safe operation during repetitive surges, PCB layout must maximize copper area connected to both leads - especially the cathode - to emulate an infinite heatsink condition. Derating begins above 25 °C ambient, with 5.0 W power dissipation fully supported only at lead temperature ≤75 °C (per Fig. 5). Use ≥25 mm² of 2-oz copper per lead for optimal thermal performance.
Can the P6KE91-E3/73 replace older 1N6277A-type suppressors in existing designs?
Yes, the P6KE91-E3/73 is a direct functional and mechanical replacement for 1N6277A, sharing identical DO-204AC (DO-15) package, VWM (77.8 V), VBR (86.5–95.5 V), and VC (≤125 V) specifications. It improves upon legacy parts with tighter parameter distribution, AEC-Q101 qualification path, RoHS compliance, and enhanced surge lifetime due to glass passivation. No PCB changes are required, and solder process compatibility is maintained per J-STD-002.
P6KE91-E3/73 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):
- 73.7V
- Voltage - Breakdown (Min):
- 81.9V
- Voltage - Clamping (Max) @ Ipp:
- 131V
- Current - Peak Pulse (10/1000µs):
- 4.6A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
P6KE91-E3/73 FAQ
1.How can I place an order for P6KE91-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE91-E3/73 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 P6KE91-E3/73 reliable?
The price and inventory of P6KE91-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE91-E3/73 is usually 5 days.
3.What payment methods are accepted for P6KE91-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE91-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE91-E3/73?
P6KE91-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE91-E3/73 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 P6KE91-E3/73?
For technical support, including P6KE91-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE91-E3/73 requirements.
6.How does Aetrix verify that P6KE91-E3/73 is sourced from the original manufacturer or authorized distributors?
All P6KE91-E3/73 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 P6KE91-E3/73 meets industry standards.
7.What is the process for return or replacement of P6KE91-E3/73?
All P6KE91-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P6KE91-E3/73, 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 P6KE91-E3/73 part is unused and in its original packaging.
Return procedure for P6KE91-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE91-E3/73 Tags
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