My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SA15HE3/54
- Part No.:
- SA15HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA15HE3/54.pdf
- Description:
- TVS DIODE 15VWM 26.9VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,973
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SA15HE3/54 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, rated for 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR), 500 W peak pulse power (10/1000 μs), and AEC-Q101 qualified for automotive use. It protects MOSFETs and ICs against inductive switching transients in engine control units and power supply rails.
For engineers reviewing the SA15HE3/54 datasheet, SA15HE3/54 pinout, SA15HE3/54 application, or SA15HE3/54 equivalent, this page delivers verified electrical parameters, clamping behavior at 20.5 A IPPM, thermal derating curves, RoHS-compliant lead finish, and AEC-Q101 qualification status - all critical for automotive-grade surge protection design validation.
Technical Context
The SA15HE3/54 operates as a uni-directional avalanche diode with glass-passivated junction, delivering fast response (<1 ns) to transient overvoltages. Its 15 V stand-off supports 12 V automotive systems, and it clamps to ≤24.4 V at 20.5 A peak pulse current (10/1000 μs waveform), limiting energy dissipation in protected downstream circuitry.
Designed for repetitive surge immunity, it sustains 3.0 W steady-state power on infinite heatsink at TL = 75 °C and handles 70 A non-repetitive forward surge (10 ms half-sine). The device features low incremental surge resistance and meets JESD 22-B102 solderability standards with matte tin-plated leads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before conduction; sets system-level overvoltage trip threshold for 12 V nominal rails. |
| VBR (min/max) | 16.7 V / 18.5 V at 1.0 mA - Confirmed avalanche onset range; ensures reliable triggering above normal operating transients. |
| VC @ IPPM | 24.4 V at 20.5 A - Clamped voltage during 500 W transient; defines worst-case stress on protected IC's absolute maximum rating. |
| PPPM | 500 W (10/1000 μs) - Peak surge energy handling capacity; validates compliance with ISO 7637-2 Pulse 1 & 2a requirements. |
| IFSM | 70 A (10 ms half-sine) - Forward surge capability; enables robustness against load dump events in automotive power networks. |
| TJ max | 175 °C - Maximum junction temperature; supports under-hood deployment without thermal derating penalties up to ambient 125 °C. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD; enables direct use in ASIL-B systems. |
Pinout & Package
Package: DO-204AC (DO-15), molded epoxy case with UL 94 V-0 flammability rating; matte tin-plated leads, polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-side reference; completes clamping loop during positive transients. |
| Cathode (banded end) | Reverse-biased terminal / clamping node | Connected to protected line (e.g., 12 V rail); conducts avalanche current when VLINE exceeds VWM. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable, repeatable avalanche characteristics over 1000+ surge cycles without parameter drift. |
| 500 W peak pulse power (10/1000 μs) | Meets ISO 7637-2 Level III surge immunity for 12 V vehicle networks without external heat sinking. |
| AEC-Q101 qualification | Validates reliability for automotive powertrain and body electronics applications requiring zero field failure risk. |
| Matte tin-plated leads (J-STD-002 compliant) | Ensures consistent solder wetting and intermetallic formation in reflow and wave soldering processes. |
| Low incremental clamping resistance | Minimizes voltage overshoot during fast-rising transients (e.g., inductive kick from solenoid drivers). |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Digital Input Module |
|---|---|
Use Scenario: Protection of microcontroller GPIO and CAN transceiver power rails against alternator load dump and relay coil flyback. IC Role / Device Role / Timing Role: Uni-directional TVS clamp placed between 12 V supply and ground, triggered within <1 ns to limit voltage to ≤24.4 V. Use Value: Prevents latch-up and gate oxide damage in 3.3 V/5 V logic devices powered from switched 12 V rails. | Use Scenario: Safeguarding 24 V DC digital input circuits from field-wiring induced surges and electrostatic discharge. IC Role / Device Role / Timing Role: Standoff-rated transient suppressor mounted at connector entry point, shunting >500 W spikes to chassis ground. Use Value: Eliminates need for redundant input filtering stages while maintaining IEC 61000-4-5 Level 3 compliance. |
| Telecom Power Supply Front-End | Consumer Appliance Motor Driver Board |
Use Scenario: Secondary-side overvoltage suppression on +12 V bias rail feeding Ethernet PHY and PoE controller ICs. IC Role / Device Role / Timing Role: Fast-acting clamping diode parallel to bulk capacitor, activated before downstream LDOs reach overvoltage shutdown thresholds. Use Value: Maintains uninterrupted data link operation during AC line transients coupled through SMPS transformer leakage. | Use Scenario: Protection of H-bridge gate drivers and current sense amplifiers from back-EMF generated by brushed DC motors. IC Role / Device Role / Timing Role: Localized TVS at motor driver IC supply pins, clamping inductive kick to <25 V during PWM turn-off. Use Value: Extends gate driver lifetime by preventing repeated VDS overstress and reducing thermal cycling fatigue. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A-E3/54 | Same DO-214AC package; identical VWM (15 V), but lower PPPM (400 W) and higher VC (24.4 V → 26.5 V at 17.1 A). | Not AEC-Q101 qualified; suitable for commercial-grade industrial equipment only. | Select SMAJ15A-E3/54 only if automotive qualification is not required and board space allows larger SMA footprint. |
| 1.5KE15A | DO-201AD package; same VWM/VBR, but higher PPPM (1500 W) and slower response due to larger junction capacitance. | Higher surge margin but unsuitable for high-speed signal lines; requires PCB layout revision for axial-leaded mounting. | Choose 1.5KE15A only when legacy through-hole assembly is mandated and 1500 W headroom justifies added board area. |
Compared with SMAJ15A-E3/54 and 1.5KE15A, SA15HE3/54 uniquely combines AEC-Q101 qualification, DO-15 compactness, and precise 500 W/24.4 V clamping-making it the optimal choice for new automotive designs where qualification, size, and predictable clamping are jointly constrained.
Availability
SA15HE3/54 is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, telecom power supplies, and consumer appliance motor controllers requiring stable component supply across multi-year production cycles.
Supply support for SA15HE3/54 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, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The SAxxA series is designed specifically for robust transient suppression in harsh environments-targeting automotive, industrial, and telecom applications where repeatable clamping, thermal stability, and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of SA15HE3/54 at its rated peak pulse current?
The SA15HE3/54 clamps to a maximum of 24.4 V at its rated peak pulse current of 20.5 A (10/1000 μs waveform), as specified in the Vishay datasheet Document Number 88378. This value defines the upper voltage limit imposed on protected circuitry during surge events and is critical for ensuring compatibility with downstream ICs' absolute maximum ratings. The SA15HE3/54 maintains this clamping performance across its full operating temperature range.
Is SA15HE3/54 qualified for automotive applications?
Yes, SA15HE3/54 is AEC-Q101 qualified, as confirmed in the Vishay datasheet revision 18-Sep-12. The HE3 suffix explicitly denotes AEC-Q101 qualification, and the device undergoes stress testing including high-temperature operating life (HTOL), temperature cycling (TCT), and ESD per JESD22-A114. This makes SA15HE3/54 suitable for use in engine control units, body electronics, and other automotive systems requiring zero-defect reliability.
What does the "HE3/54" suffix mean in SA15HE3/54?
The "HE3" suffix in SA15HE3/54 indicates RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance; "54" denotes the preferred package code for 13-inch paper tape and reel packaging with 4000 units per reel. This ordering code ensures traceable, automotive-grade material with validated plating integrity and standardized logistics handling-distinct from the commercial-grade "E3" variant.
How does SA15HE3/54 differ from bi-directional SA15CA variants?
SA15HE3/54 is uni-directional, featuring a cathode band and conducting only in reverse avalanche mode, whereas SA15CA is bi-directional with no polarity marking and symmetric clamping in both directions. SA15HE3/54 has a forward voltage drop (~3.5 V at 100 A) and supports 70 A IFSM, while SA15CA lacks forward conduction capability. Use SA15HE3/54 for DC rail protection; choose SA15CA only for AC-coupled or floating signal line protection.
What is the maximum operating temperature for SA15HE3/54?
The SA15HE3/54 has a maximum junction temperature (TJ) of 175 °C and an operating junction/storage temperature range of –55 °C to +175 °C. This wide range enables deployment in under-hood automotive locations and industrial enclosures without derating, provided PCB copper area and airflow meet Vishay's recommended thermal design guidelines for DO-204AC packages.
SA15HE3/54 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 26.9V
- Current - Peak Pulse (10/1000µs):
- 18.6A
- 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)
SA15HE3/54 FAQ
1.How can I place an order for SA15HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA15HE3/54 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 SA15HE3/54 reliable?
The price and inventory of SA15HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA15HE3/54 is usually 5 days.
3.What payment methods are accepted for SA15HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA15HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA15HE3/54?
SA15HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA15HE3/54 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 SA15HE3/54?
For technical support, including SA15HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA15HE3/54 requirements.
6.How does Aetrix verify that SA15HE3/54 is sourced from the original manufacturer or authorized distributors?
All SA15HE3/54 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 SA15HE3/54 meets industry standards.
7.What is the process for return or replacement of SA15HE3/54?
All SA15HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA15HE3/54, 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 SA15HE3/54 part is unused and in its original packaging.
Return procedure for SA15HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA15HE3/54 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
