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Vishay General Semiconductor - Diodes Division SA90AHE3/54
- Part No.:
- SA90AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA90AHE3/54.pdf
- Description:
- TVS DIODE 90VWM 146VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,615
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Product details
Overview
SA90AHE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for clamping voltage transients on power and signal lines. It features 90 V stand-off voltage (VWM), 100–111 V breakdown voltage (VBR) at 1 mA, 146 V maximum clamping voltage (VC) at 3.4 A peak pulse current (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 μs waveform - used in automotive ECU protection and industrial sensor interface circuits.
For engineers reviewing the SA90AHE3/54 datasheet, SA90AHE3/54 pinout, SA90AHE3/54 application, or SA90AHE3/54 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, DO-15 mechanical compatibility, 175 °C max junction temperature, and 3.0 W steady-state power dissipation under heatsink conditions.
Technical Context
This TVS diode operates as a voltage-clamping protection device that remains high-impedance below VWM (90 V) and rapidly avalanches above VBR (100–111 V) to limit transient energy. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM).
The device supports repetitive surge events at 0.01 % duty cycle and withstands 70 A non-repetitive forward surge (IFSM) per 10 ms half-sine wave. Thermal derating follows a defined curve from 3.0 W at TL = 75 °C down to zero at 175 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 100 V / 111 V at 1 mA - guaranteed avalanche initiation range for reliable overvoltage detection |
| VC @ IPPM | 146 V at 3.4 A - clamped voltage during 10/1000 μs transient, defining protected circuit stress level |
| PPPM | 500 W - peak transient energy absorption capability under standard IEC 61000-4-5 waveform |
| ID @ VWM | <1.0 μA - minimal leakage current preserves signal integrity in high-impedance circuits |
| TJ max. | 175 °C - enables operation in under-hood automotive and high-temperature industrial environments |
| AEC-Q101 | Qualified - validated for automotive electronics reliability including temperature cycling and HTRB |
Pinout & Package
DO-15 (DO-204AC) molded epoxy package with matte tin-plated leads; cathode indicated by color band on one end. Leads are solderable per J-STD-002 and JESD 22-B102; compliant with UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts during positive transients when used in reverse-biased configuration |
| Cathode | Clamping reference terminal | Marked end; connected to higher-potential rail (e.g., VCC or signal line); defines clamping threshold relative to this node |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| 500 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV) on 50 Ω source impedance without failure |
| AEC-Q101 qualification | Validated for automotive use including HTSL, TC, and UHAST - suitable for engine control and ADAS modules |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a) |
| DO-15 footprint | Enables drop-in replacement for legacy TVS diodes and compatibility with standard through-hole assembly processes |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Digital Input Module |
|---|---|
Use Scenario: Protection of 12 V supply rail against load dump and alternator ripple in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and regulator input to clamp transients up to 120 V. Use Value: Limits voltage seen by downstream LDOs and microcontrollers to ≤146 V, preventing latch-up or gate oxide damage. | Use Scenario: Safeguarding 24 V digital input channels from field-wiring induced surges in factory automation systems. IC Role / Device Role / Timing Role: Standoff protection element across optocoupler input terminals to suppress inductive kickback from solenoid drivers. Use Value: Maintains <1.0 μA leakage at 24 V nominal, preserving input threshold accuracy while surviving 500 W surge events. |
| Telecom Base Station Power Interface | Consumer Appliance Motor Drive Board |
Use Scenario: Secondary-level surge suppression on -48 V DC power feed entering remote radio units. IC Role / Device Role / Timing Role: Reverse-biased clamping device on telecom power bus to absorb lightning-induced common-mode transients. Use Value: Withstands repeated 10/1000 μs pulses up to 500 W without parameter shift, ensuring multi-year field reliability. | Use Scenario: Protection of MCU GPIO pins driving relay coils and small BLDC fans in smart home appliances. IC Role / Device Role / Timing Role: Localized TVS on each coil driver output to suppress back-EMF spikes during switching. Use Value: Fast response time and low clamping voltage (146 V) prevent MCU reset or I/O latch-up during frequent motor commutation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ90A-E3/52 | Same VWM/VBR/VC specs but in SMA (DO-214AC) surface-mount package; 1.5 W lower PPPM (400 W) | Requires PCB redesign for SMT placement; better suited for space-constrained consumer designs | Select when board area is limited and thermal management allows lower peak power handling |
| P6SMB90AHE3/A | Identical DO-15 package and AEC-Q101 qualification; same 90 V VWM but slightly higher VC (147 V vs. 146 V) and 1.0 μA ID | No layout change needed; identical mounting and soldering process | Preferred for direct second-source procurement where full parametric match and qualification alignment are required |
Compared with SMAJ90A-E3/52 and P6SMB90AHE3/A, SA90AHE3/54 offers the highest PPPM (500 W) in DO-15 form factor and lowest clamping voltage among AEC-Q101-qualified 90 V unidirectional TVS diodes - making it optimal for high-energy automotive and industrial surge environments where through-hole robustness is prioritized.
Availability
SA90AHE3/54 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC input conditioning, and telecom power interface applications requiring stable component supply and long-term lifecycle support.
Supply support for SA90AHE3/54 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 and automotive-grade qualification.
The SAxxA series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh environments including automotive, industrial controls, and telecommunications infrastructure.
FAQ
What is the maximum clamping voltage of SA90AHE3/54 under standard test conditions?
The SA90AHE3/54 exhibits a maximum clamping voltage (VC) of 146 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 3.4 A. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during transient events. The SA90AHE3/54 maintains this clamping performance across its qualified temperature range and after AEC-Q101 stress testing.
Is SA90AHE3/54 suitable for automotive applications?
Yes, SA90AHE3/54 is AEC-Q101 qualified and explicitly rated for automotive use. Its construction includes glass-passivated junction, matte tin-plated leads meeting JESD 22-B102, and qualification across temperature cycling, high-temperature reverse bias, and unbiased highly accelerated stress testing. The SA90AHE3/54 is deployed in engine control units, body control modules, and ADAS power supplies where robust transient immunity is mandatory.
What does the "HE3" suffix indicate in SA90AHE3/54?
The "HE3" suffix in SA90AHE3/54 denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. It distinguishes this variant from commercial-grade "E3" versions and confirms compliance with automotive reliability requirements, including extended temperature operation (-55 °C to +175 °C) and enhanced metallurgical stability under thermal stress.
Can SA90AHE3/54 be used in bidirectional configurations?
No, SA90AHE3/54 is a unidirectional TVS diode and must be connected with cathode toward the protected line's higher potential. For bidirectional protection, Vishay specifies variants with "CA" suffix (e.g., SA90CA). Using SA90AHE3/54 in reverse-biased orientation outside its specified unidirectional configuration risks premature failure or undefined clamping behavior.
What is the steady-state power dissipation rating for SA90AHE3/54?
The SA90AHE3/54 has a steady-state power dissipation (PD) rating of 3.0 W when mounted on an infinite heatsink at lead temperature (TL) of 75 °C. This rating decreases linearly with increasing TL per the derating curve in Figure 5 of the datasheet, reaching zero at 175 °C junction temperature. The SA90AHE3/54 is not intended for continuous power dissipation but for transient energy absorption.
SA90AHE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 90V
- Voltage - Breakdown (Min):
- 100V
- Voltage - Clamping (Max) @ Ipp:
- 146V
- Current - Peak Pulse (10/1000µs):
- 3.4A
- Power - Peak Pulse:
- 500W
- 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)
SA90AHE3/54 FAQ
1.How can I place an order for SA90AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA90AHE3/54 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 SA90AHE3/54 reliable?
The price and inventory of SA90AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA90AHE3/54 is usually 5 days.
3.What payment methods are accepted for SA90AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA90AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA90AHE3/54?
SA90AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA90AHE3/54 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 SA90AHE3/54?
For technical support, including SA90AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA90AHE3/54 requirements.
6.How does Aetrix verify that SA90AHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA90AHE3/54 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 SA90AHE3/54 meets industry standards.
7.What is the process for return or replacement of SA90AHE3/54?
All SA90AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA90AHE3/54, 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 SA90AHE3/54 part is unused and in its original packaging.
Return procedure for SA90AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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