My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SA15AHE3/54
- Part No.:
- SA15AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA15AHE3/54.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,923
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SA15AHE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for circuit protection against ESD and surge transients. It features 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR) at 1 mA, 500 W peak pulse power (10/1000 µs), 24.4 V clamping voltage at 20.5 A, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SA15AHE3/54 datasheet, SA15AHE3/54 pinout, SA15AHE3/54 application, or SA15AHE3/54 equivalent, key selection criteria include unidirectional polarity, DO-15 mechanical compatibility, 175 °C max junction temperature, low 1.0 µA reverse leakage at VWM, and suitability for 12 V rail protection in automotive ECUs and industrial sensor interfaces.
Technical Context
The SA15AHE3/54 operates as a silicon avalanche diode with glass-passivated junction, enabling fast response (<1 ns) to transient overvoltages. Its unidirectional configuration provides cathode-anode conduction only, with polarity marked by a band on the DO-15 body. Clamping begins near VBR and stabilizes at VC = 24.4 V under 20.5 A IPPM, delivering predictable protection without latch-up.
Thermal performance is defined by 3.0 W steady-state power dissipation on infinite heatsink at TL = 75 °C and 175 °C maximum junction temperature. The device meets JESD 201 Class 2 whisker resistance and is RoHS-compliant with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before clamping initiates; sets protection threshold for 12 V nominal systems. |
| VBR (min/max) | 16.7 V / 18.5 V at 1 mA - Confirmed breakdown range ensures reliable turn-on margin above VWM with minimal dispersion. |
| VC @ IPPM | 24.4 V at 20.5 A - Clamping voltage limits downstream IC stress during 500 W transient events (10/1000 µs waveform). |
| IPPM | 20.5 A - Peak pulse current capability defines surge handling capacity for ISO 7637-2 Pulse 1/2a/5a compliance testing. |
| PPPM | 500 W - Peak pulse power rating determines survivability of high-energy transients without degradation. |
| TJ max | 175 °C - Enables operation in under-hood automotive environments and high-ambient industrial enclosures. |
| Leakage @ VWM | 1.0 µA - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in always-on circuits. |
Pinout & Package
Package: DO-15 (DO-204AC), axial leaded, epoxy-molded case with UL 94 V-0 flammability rating. Cathode identified by color band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return plane; completes clamping loop during transient events. |
| Cathode | Protected line connection / Surge sink node | Connected to protected line (e.g., 12 V supply rail); conducts avalanche current when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable avalanche characteristics and long-term reliability under repetitive surge stress. |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
| 500 W peak pulse power (10/1000 µs) | Supports robust immunity to load dump and inductive switching transients per ISO 7637-2 and SAE J1113-11. |
| Low incremental surge resistance | Minimizes VC overshoot and ensures tight clamping window across full IPPM range. |
| Matte tin-plated leads | Ensures solderability and intermetallic bond integrity in automated assembly processes per J-STD-002. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply lines in engine control modules against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between power rail and chassis ground to clamp surges above 15 V. Use Value: Limits voltage excursion to ≤24.4 V during 20.5 A transients, preventing damage to MCU, CAN transceivers, and voltage regulators. | Use Scenario: Safeguarding analog input pins of industrial temperature/pressure sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Point-of-entry protection on sensor signal lines exposed to field wiring inductive coupling. Use Value: Suppresses ±1 kV ESD (IEC 61000-4-2) and 40 A surge (IEC 61000-4-5) while adding <0.5 pF parasitic capacitance. |
| Consumer Power Adapter Input Protection | Telecom DC Power Feed Protection |
Use Scenario: Input-stage surge suppression in wall-mounted AC/DC adapters for smart home devices. IC Role / Device Role / Timing Role: Primary-side TVS on rectified DC bus to absorb switching noise and lightning-induced surges. Use Value: Withstands 500 W pulses without derating at TA ≤ 85 °C, extending adapter lifetime in high-surge environments. | Use Scenario: DC feed line protection in PoE-powered telecom equipment (e.g., remote radio units, DSLAMs). IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable; SA15AHE3/54 used on non-signal-return paths requiring unidirectional clamping. Use Value: Provides 175 °C thermal margin for operation inside sealed outdoor cabinets with limited airflow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A-E3/52 (Vishay) | Same VWM/VBR/VC specs but in smaller SMA (DO-214AC) package; 1.0 W lower PD (2.0 W vs. 3.0 W). | Preferred where board space is constrained and thermal mass is sufficient; unsuitable for high-ambient or high-duty-cycle surge environments. | Select SMAJ15A-E3/52 only if footprint reduction outweighs thermal derating risk in final layout. |
| 1.5KE15A (ON Semiconductor) | Same DO-15 package and electrical ratings, but rated for 1.5 kW peak pulse power (10/1000 µs) and lacks AEC-Q101 qualification. | Applicable in industrial/commercial designs where automotive qualification is unnecessary and higher single-pulse energy margin is required. | Choose 1.5KE15A when surge test levels exceed 500 W or AEC-Q101 is not mandated. |
Compared with SA15AHE3/54, SMAJ15A-E3/52 trades thermal robustness for compactness, while 1.5KE15A offers higher single-event energy tolerance at the cost of automotive qualification-making SA15AHE3/54 optimal for thermally demanding, automotive-grade 12 V rail protection.
Availability
SA15AHE3/54 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interface modules, and consumer power adapter designs requiring stable component supply and AEC-Q101 assurance.
Supply support for SA15AHE3/54 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade validation.
The SAxxA series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-reliability transient suppression in automotive, industrial, and telecom power rails where precise clamping and AEC-Q101 compliance are mandatory.
FAQ
What is the polarity configuration of the SA15AHE3/54?
The SA15AHE3/54 is a unidirectional TVS diode: it conducts only when the cathode is positive relative to the anode. Polarity is marked by a color band on the DO-15 body indicating the cathode end. This configuration enables targeted clamping on positive-going transients in DC power lines, unlike bidirectional variants which suppress both polarities.
Does the SA15AHE3/54 meet automotive qualification standards?
Yes, the SA15AHE3/54 is AEC-Q101 qualified, as confirmed in the Vishay datasheet revision 27-Sep-2021 (Document Number: 88378). This qualification validates its reliability for automotive applications including engine control, body electronics, and ADAS subsystems under extended temperature cycling, humidity, and mechanical stress conditions.
What is the maximum clamping voltage of the SA15AHE3/54 under surge conditions?
The SA15AHE3/54 has a maximum clamping voltage (VC) of 24.4 V at 20.5 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during a 500 W transient event.
Can the SA15AHE3/54 be used in bidirectional protection circuits?
No, the SA15AHE3/54 is strictly unidirectional and must not be used for bidirectional surge suppression. For symmetrical transient protection (e.g., data lines or AC-coupled signals), Vishay specifies CA-suffix parts like SA15CA. Using SA15AHE3/54 in bidirectional roles risks failure during negative transients due to lack of reverse avalanche capability.
What is the lead finish and solderability specification for the SA15AHE3/54?
The SA15AHE3/54 features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. It supports solder dip at 275 °C for up to 10 seconds (per JESD 22-B106) and passes JESD 201 Class 2 whisker testing, ensuring long-term interconnect reliability in automated PCB assembly.
SA15AHE3/54 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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 20.5A
- 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)
SA15AHE3/54 FAQ
1.How can I place an order for SA15AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA15AHE3/54 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 SA15AHE3/54 reliable?
The price and inventory of SA15AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA15AHE3/54 is usually 5 days.
3.What payment methods are accepted for SA15AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA15AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA15AHE3/54?
SA15AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA15AHE3/54 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 SA15AHE3/54?
For technical support, including SA15AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA15AHE3/54 requirements.
6.How does Aetrix verify that SA15AHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA15AHE3/54 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 SA15AHE3/54 meets industry standards.
7.What is the process for return or replacement of SA15AHE3/54?
All SA15AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA15AHE3/54, 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 SA15AHE3/54 part is unused and in its original packaging.
Return procedure for SA15AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA15AHE3/54 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 …
