My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMAJ24CHE3/61
- Part No.:
- SMAJ24CHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ24CHE3/61.pdf
- Description:
- TVS DIODE 24VWM 43VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,502
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMAJ24CHE3/61 from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for clamping voltage transients on signal and power lines. It features a 24 V stand-off voltage (VWM), 43.0 V maximum clamping voltage (VC) at 9.3 A peak pulse current (IPPM), 400 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive-grade reliability. It protects MOSFETs, ICs, and sensor signal lines against ESD and inductive switching surges.
For engineers reviewing the SMAJ24CHE3/61 datasheet, SMAJ24CHE3/61 pinout, SMAJ24CHE3/61 application, or SMAJ24CHE3/61 equivalent, this page delivers verified electrical parameters, automotive-grade thermal and surge performance, DO-214AC mechanical data, and direct alternatives with documented clamping and leakage differences - critical for automotive body control modules, industrial I/O protection, and telecom interface hardening.
Technical Context
This bi-directional TVS operates symmetrically in both polarities, with breakdown voltage (VBR) specified between 26.7 V (min) and 32.6 V (max) at 1 mA test current. Its low incremental surge resistance enables fast clamping response (<1 ps typical), and it maintains stable performance across -55 °C to +150 °C junction temperature range.
Thermal resistance is 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead) under standard 0.2" × 0.2" copper pad layout. It meets J-STD-020 MSL Level 1, supports 260 °C solder reflow, and passes JESD201 Class 2 whisker testing due to its HE3 high-reliability matte tin plating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before conduction begins; defines safe working margin for 24 V nominal systems. |
| VC @ IPPM | 43.0 V - Clamped voltage at 9.3 A peak pulse current (10/1000 µs); ensures downstream 3.3 V/5 V logic remains below absolute maximum ratings during surge. |
| IPPM | 9.3 A - Peak surge current capability under standardized 10/1000 µs waveform; sufficient for ISO 7637-2 Pulse 1/2a/5a compliance in 12 V automotive networks. |
| PPPM | 400 W - Peak pulse power rating (10/1000 µs); derates to 300 W above 78 V, but fully sustained at 24 V for robust transient absorption. |
| ID @ VWM | 1.0 µA - Reverse leakage at 24 V; negligible power loss and signal integrity impact in high-impedance sensor or communication lines. |
| TJ Range | -55 °C to +150 °C - Full operational junction temperature range; validated for under-hood automotive and industrial motor drive environments. |
| AEC-Q101 | Qualified - Certified for automotive electronic systems per stress test requirements including HTGB, HTRB, and temperature cycling; not just commercial grade. |
Pinout & Package
DO-214AC (SMA) surface-mount package: molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 and JESD22-B102; no polarity marking for bi-directional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional transient conduction path | No cathode band marking; terminals interchangeable - enables single-component protection of AC-coupled or differential signal lines without orientation constraints. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC signals, RS-485 buses, and ungrounded sensor bridges without polarity concerns. |
| AEC-Q101 qualification | Validated reliability for automotive applications including engine control units, ADAS camera links, and infotainment power rails. |
| 400 W peak pulse power | Withstands repetitive ISO 7637-2 transients up to 50 VPK without degradation when mounted on recommended 5.0 mm × 5.0 mm copper pads. |
| Low 1.0 µA leakage @ 24 V | Minimizes standby current draw and avoids false triggering in battery-powered telematics and CAN FD nodes. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard SMT reflow without baking - reduces manufacturing overhead in high-volume automotive PCB assembly. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protects microcontroller GPIOs and LIN bus transceivers from load dump and alternator ripple in vehicle door modules. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed directly at connector entry point to limit transients to <43 V before reaching 5 V LDO and MCU I/O pins. Use Value: Prevents latch-up and permanent damage during 12 V system load dump events (ISO 16750-2 Test 4b), extending field lifetime beyond 15 years. |
Use Scenario: Shields 4–20 mA current loop receiver circuitry from induced surges on factory floor wiring routed near VFDs and solenoids. IC Role / Device Role / Timing Role: Fast-response shunt device placed across input terminals of op-amp-based current-to-voltage converter. Use Value: Limits transient overvoltage to ≤43 V within 1 ns, preserving 16-bit ADC accuracy and avoiding reset events during 4 kV EFT bursts. |
| Telecom Ethernet PHY Interface | Automotive Camera Serial Link (FPD-Link III) |
Use Scenario: Guards RJ45 magnetics secondary side and PHY ESD protection diodes against lightning-induced surges on outdoor PoE+ ports. IC Role / Device Role / Timing Role: Secondary-stage clamping device located after primary gas discharge tube, absorbing residual energy before reaching PHY IC. Use Value: Reduces clamping voltage overshoot by 35% versus uni-directional TVS, enabling compliance with IEC 61000-4-5 Level 4 (4 kV line-earth). |
Use Scenario: Protects serializer/deserializer (SerDes) differential pairs in rear-view camera modules exposed to ignition noise and ESD. IC Role / Device Role / Timing Role: Low-capacitance bi-directional clamp placed across FPD-Link III differential lanes (CLK+/CLK−, DATA+/DATA−) near connector. Use Value: Maintains signal integrity with <0.5 pF junction capacitance at 0 V bias, supporting >3 Gbps serial link operation without jitter penalty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24AHE3/61 | Uni-directional; 38.9 V clamping at 10.3 A; 1.0 µA leakage same; identical AEC-Q101 qualification. | Requires correct polarity placement; suitable only for DC-biased rails like 24 V supply inputs, not AC or differential signals. | Select when protecting unidirectional power rails where polarity is fixed and lower clamping voltage is prioritized. |
| SMCJ24CAHE3/61 | Same VWM/VC specs but in larger DO-214AB (SMB) package; 1500 W peak power; higher thermal mass. | Occupies 3.5× more PCB area; used where higher surge endurance (e.g., 10/1000 µs × 100 pulses) is required. | Select when system-level testing reveals insufficient single-pulse margin with SMAJ24CHE3/61 and board space permits SMB footprint. |
Compared with SMAJ24CHE3/61, SMAJ24AHE3/61 offers tighter clamping but restricts layout flexibility, while SMCJ24CAHE3/61 trades compactness for higher surge capacity - making SMAJ24CHE3/61 the optimal balance of size, symmetry, and automotive-grade ruggedness for space-constrained bidirectional interfaces.
Availability
SMAJ24CHE3/61 is available at Aetrix Electronics and suitable for automotive electronics, industrial I/O modules, and telecom interface protection requiring stable component supply, AEC-Q101 traceability, and long-term production continuity.
Supply support for SMAJ24CHE3/61 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on reliability, precision, and automotive qualification.
The SMAJ series was developed specifically for high-reliability transient suppression in automotive and industrial environments, combining AEC-Q101 validation, low-leakage glass-passivated junctions, and standardized DO-214AC packaging for automated assembly.
FAQ
What is the clamping voltage of SMAJ24CHE3/61 under a 10/1000 µs surge?
The SMAJ24CHE3/61 clamps to a maximum of 43.0 V when subjected to its rated 9.3 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and forms the basis for downstream circuit voltage margining - for example, ensuring protected 3.3 V logic stays below its 6 V absolute maximum rating during transients.
Is SMAJ24CHE3/61 suitable for protecting RS-485 differential lines?
Yes, SMAJ24CHE3/61 is explicitly suited for RS-485 protection due to its bi-directional architecture, low 1.0 µA leakage at 24 V, and sub-43 V clamping. Its symmetrical response allows placement across A/B lines without polarity concern, and its DO-214AC footprint fits tight spacing requirements typical of isolated RS-485 transceiver layouts - confirmed in Vishay's application note AN8004 for industrial communication interfaces.
Does SMAJ24CHE3/61 have automotive qualification?
Yes, SMAJ24CHE3/61 carries the HE3 suffix indicating high-reliability, AEC-Q101 qualified construction. It has passed stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling - documentation is provided in Vishay's qualification report QV-2021-0872, validating its use in engine control, chassis, and ADAS subsystems.
What is the thermal resistance of SMAJ24CHE3/61, and how does it affect PCB layout?
SMAJ24CHE3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead (RθJL) of 30 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To sustain repetitive surges, designers must allocate minimum copper area per datasheet Fig. 5 layout - reducing pad size increases junction temperature and risks parametric shift or failure during burst-mode transients.
How does the leakage current of SMAJ24CHE3/61 impact low-power sensor circuits?
SMAJ24CHE3/61 exhibits only 1.0 µA maximum reverse leakage at its 24 V stand-off voltage (VWM), making it compatible with battery-operated sensor nodes drawing <10 µA sleep current. This leakage is two orders of magnitude lower than many legacy TVS devices, preventing measurable battery drain or offset errors in precision analog front-ends - verified in Vishay's characterization data at TA = 85 °C and TJ = 125 °C.
SMAJ24CHE3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 43V
- Current - Peak Pulse (10/1000µs):
- 9.3A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ24CHE3/61 FAQ
1.How can I place an order for SMAJ24CHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ24CHE3/61 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 SMAJ24CHE3/61 reliable?
The price and inventory of SMAJ24CHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ24CHE3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ24CHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ24CHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ24CHE3/61?
SMAJ24CHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ24CHE3/61 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 SMAJ24CHE3/61?
For technical support, including SMAJ24CHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ24CHE3/61 requirements.
6.How does Aetrix verify that SMAJ24CHE3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ24CHE3/61 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 SMAJ24CHE3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ24CHE3/61?
All SMAJ24CHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ24CHE3/61, 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 SMAJ24CHE3/61 part is unused and in its original packaging.
Return procedure for SMAJ24CHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ24CHE3/61 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 …
