My Inquiry
My Account
Broadcom Limited ASSR-302C-502E
- Part No.:
- ASSR-302C-502E
- Manufacturer:
- Broadcom Limited
- Category:
- Solid State Relays (SSR)
- Package:
- 8-SMD (0.300", 7.62mm)
- Datasheet:
-
ASSR-302C-502E.pdf
- Description:
- SSR RELAY SPST-NO 50MA 0-250V
- Quantity:
- Payment:
- Shipping:
Inventory:2,817
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ASSR-302C-502E from Broadcom (formerly Avago) is a dual-channel, normally-off, solid-state SPST relay in an 8-pin gull-wing surface-mount package. It delivers 250V output withstand voltage, 0.05A current rating, 34Ω typical on-resistance, 0.07ms turn-on/turn-off time, and 0.3nA typical off-state leakage - enabling high-speed, low-error switching in automated test equipment signal paths.
For engineers reviewing the ASSR-302C-502E datasheet, pinout, applications, or equivalent options, key selection criteria include input LED drive compatibility (1mA min), bidirectional signal handling capability, 3750 Vrms input-output isolation, and dual-channel Form A relay equivalence for EMR replacement in space-constrained PCB layouts.
Technical Context
The ASSR-302C-502E integrates two independent optically isolated channels, each combining an AlGaAs infrared LED input stage with a photovoltaic diode array and MOSFET driver circuit to control two discrete high-voltage MOSFETs. Its dual-channel architecture functions as two independent SPST relays without shared internal nodes.
It operates across –40°C to +85°C, requires ≤0.8V input voltage to guarantee turn-off, and achieves <15pF output off-capacitance with 340pF·Ω typical C×R product - critical for minimizing signal distortion in multiplexer and data acquisition front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Withstand Voltage | 250 V - supports safe switching of signals up to ±250V in test instrumentation and industrial I/O. |
| On-Resistance (RON) | 34 Ω typical - ensures minimal voltage drop and power loss at 50mA load current. |
| Turn-On / Turn-Off Time | 0.07 ms typical - enables sub-100µs channel switching for high-throughput ATE scan sequences. |
| Input Trigger Current | 1 mA minimum - compatible with standard logic-level GPIO or DAC-driven current sources without external amplification. |
| Off-State Leakage | 0.3 nA typical - preserves signal integrity in high-impedance measurement circuits (e.g., picoammeter inputs). |
| Input–Output Isolation | 3750 Vrms - meets UL1577 and CSA Component Acceptance for reinforced insulation in safety-critical systems. |
| C × R Product | 340 pF·Ω typical - minimizes transient coupling and settling error in precision analog multiplexing. |
Pinout & Package
ASSR-302C-502E uses an 8-pin gull-wing surface-mount package (300-mil DIP footprint with bent leads). Pin assignments are identical to the DIP-8 variant, with pins 1–4 forming Channel 1 input/output and pins 5–8 forming Channel 2 input/output.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | Channel 1 LED Anode / Cathode | Optically couples to Channel 1 output; 1mA min forward current required for reliable turn-on. |
| 3, 4 | Channel 1 Output Source / Drain | Bidirectional 250V/0.05A switch node; no polarity sensitivity; 34Ω RON path. |
| 5, 6 | Channel 2 LED Anode / Cathode | Independent optical input for second relay channel; electrically isolated from Channel 1. |
| 7, 8 | Channel 2 Output Source / Drain | Second independent 250V/0.05A switch; usable for differential or dual-rail signal routing. |
Key Features
| Feature | Design Value |
|---|---|
| Dual SPST Form A Relay Function | Two fully isolated, independently controllable switches replace two electromechanical relays - eliminating bounce, wear, and EMI from coil actuation. |
| Low C×R (340 pF·Ω) | Enables fast settling and minimal crosstalk in high-frequency analog multiplexers and RF switch matrices. |
| 0.3 nA Off-Leakage | Preserves accuracy in femtoampere-level current measurements and high-Z sensor interfaces. |
| 3750 Vrms Input–Output Isolation | Supports safe galvanic separation between controller logic and hazardous or floating measurement domains. |
| Gull-Wing SMT Package | Enables automated assembly and board-level reliability matching DIP-8 footprints while reducing profile height vs. through-hole. |
Applications
| Automatic Test Equipment (ATE) | Data Acquisition Systems |
|---|---|
|
Use Scenario: High-speed signal routing between DUT and measurement instruments in semiconductor wafer probers. IC Role / Device Role / Timing Role: Dual-channel SPST solid-state relay providing isolated, bounce-free path selection with <100µs switching. Use Value: Enables 10k+ test points/hour throughput by eliminating mechanical relay settling delays and contact degradation. |
Use Scenario: Multiplexing thermocouple, RTD, and strain gauge inputs into a single ADC channel. IC Role / Device Role / Timing Role: Bidirectional analog switch with ultra-low leakage and 250V withstand for sensor front-end protection. Use Value: Maintains µV-level measurement accuracy across 16+ channels without guard trace complexity or active guarding. |
| Multiplexer Signal Routing | EMR / Reed Relay Replacement |
|
Use Scenario: Configurable analog matrix in modular instrumentation platforms requiring >1M cycle lifetime. IC Role / Device Role / Timing Role: Two independent, optically isolated SPST switches supporting AC/DC signal pass-through up to 250V. Use Value: Eliminates contact welding and timing jitter seen in electromechanical relays during hot-switching of reactive loads. |
Use Scenario: Upgrading legacy test fixtures using 300-mil DIP reed relays to reduce maintenance and improve repeatability. IC Role / Device Role / Timing Role: Pin-compatible dual-channel solid-state replacement with same footprint and drive requirements. Use Value: Extends system service life from 100k cycles to >100M cycles while cutting actuation energy by >95%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar solid-state relay applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLP3558A | Single-channel, 400V withstand, 0.12A rating, SO-6 package; higher current but no dual-channel integration. | Requires two devices and additional PCB area to match ASSR-302C-502E's dual functionality. | Select when higher output current or voltage rating is prioritized over channel density and footprint efficiency. |
| PS7141-AL | Dual-channel, 400V withstand, 0.1A rating, SSOP-8 package; higher RON (100Ω typ) and slower switching (0.2ms typ). | Acceptable for lower-speed, higher-voltage industrial I/O but unsuitable for <100µs ATE sequencing. | Select when cost sensitivity outweighs speed and leakage performance, and 400V isolation is mandatory. |
Compared with TLP3558A and PS7141-AL, the ASSR-302C-502E uniquely balances dual-channel integration, 0.07ms speed, 0.3nA leakage, and gull-wing manufacturability - making it optimal for compact, high-throughput test instrumentation where channel count and settling time are co-constrained.
Availability
ASSR-302C-502E is available at Aetrix Electronics and suitable for automatic test equipment, data acquisition systems, and multiplexer signal routing requiring stable component supply, RoHS-compliant lead-free packaging, and long-term production continuity.
Supply support for ASSR-302C-502E 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
Broadcom Inc. (formerly Avago Technologies) is a global semiconductor leader specializing in infrastructure software, networking, and optoelectronic components for communications, industrial, and test systems.
The ASSR-302C-502E belongs to Broadcom's ASSR-30xC series of solid-state relays, engineered specifically for high-speed, low-leakage signal switching in automated test and precision measurement applications.
FAQ
What is the maximum continuous output voltage rating for the ASSR-302C-502E?
The ASSR-302C-502E has a rated output withstand voltage of 250 V, verified per test conditions in the datasheet (VF = 0.8 V, IO = 250 µA, TA = 25°C). This is not a continuous operating voltage rating - sustained DC or AC RMS voltages must remain within system-level safety margins defined by IEC/EN 60747-5-2 and end-equipment insulation requirements. The ASSR-302C-502E is designed for intermittent switching, not continuous high-voltage hold.
Can the ASSR-302C-502E switch AC signals bidirectionally?
Yes, the ASSR-302C-502E supports true bidirectional analog signal switching due to its MOSFET-based output stage with no inherent polarity. Each channel (pins 3–4 and 7–8) passes AC, DC, or RF signals symmetrically up to ±250 V peak, provided voltage and current limits are observed. This makes the ASSR-302C-502E suitable for multiplexing audio, sensor, and test signals without rectification or level-shifting.
What is the minimum input current required to reliably turn on the ASSR-302C-502E?
The ASSR-302C-502E guarantees turn-on with a minimum forward input current of 1 mA through either LED channel (pins 1–2 or 5–6), per the recommended operating conditions table. For robust operation across temperature and device variation, Broadcom recommends 5 mA - which also ensures faster turn-on time (0.07 ms typ) and stable RON. Driving below 1 mA may result in incomplete or delayed conduction.
Is the ASSR-302C-502E pin-compatible with through-hole DIP-8 versions?
Yes, the ASSR-302C-502E uses a gull-wing surface-mount variant of the 300-mil DIP-8 outline, maintaining identical pin numbering, spacing (2.54 mm pitch), and functional pin mapping as the ASSR-302C-002E DIP-8 version. PCB land patterns can be shared, though solder paste stencil design and reflow profile must follow the gull-wing-specific recommendations in the datasheet.
Does the ASSR-302C-502E require external snubbers or flyback protection?
No, the ASSR-302C-502E does not require external snubbers or flyback diodes because its MOSFET output stage inherently handles inductive load turn-off transients without voltage overshoot - unlike electromechanical or bipolar transistor relays. However, for highly inductive loads exceeding 10 mH or fast dI/dt (>1 A/µs), layout best practices (short traces, local decoupling) are advised to maintain the specified 7 kV/µs transient rejection.
ASSR-302C-502E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Broadcom Limited
- Series:
- ASSR
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Mounting Type:
- Surface Mount
- Circuit:
- SPST-NO (1 Form A) x 2
- Output Type:
- AC, DC
- Voltage - Input:
- 1.3VDC
- Voltage - Load:
- 0 V ~ 250 V
- Load Current:
- 50 mA
- On-State Resistance (Max):
- 50 Ohms
- Termination Style:
- Gull Wing
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-DIP Gull Wing
- Approval Agency:
- CSA, UL
- Grade:
- -
- Qualification:
- -
ASSR-302C-502E FAQ
1.How can I place an order for ASSR-302C-502E through Aetrix?
Please submit a Request for Quotation (RFQ) for ASSR-302C-502E 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 ASSR-302C-502E reliable?
The price and inventory of ASSR-302C-502E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ASSR-302C-502E is usually 5 days.
3.What payment methods are accepted for ASSR-302C-502E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ASSR-302C-502E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ASSR-302C-502E?
ASSR-302C-502E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ASSR-302C-502E 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 ASSR-302C-502E?
For technical support, including ASSR-302C-502E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ASSR-302C-502E requirements.
6.How does Aetrix verify that ASSR-302C-502E is sourced from the original manufacturer or authorized distributors?
All ASSR-302C-502E 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 ASSR-302C-502E meets industry standards.
7.What is the process for return or replacement of ASSR-302C-502E?
All ASSR-302C-502E units undergo pre-shipment inspection (PSI). If there is an issue with ASSR-302C-502E, 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 ASSR-302C-502E part is unused and in its original packaging.
Return procedure for ASSR-302C-502E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ASSR-302C-502E Tags
.jpg)
-
G3VM-21UR11(TR05)
Omron Electronics Inc-EMC Div
-
G3VM-61VY3(TR05)
Omron Electronics Inc-EMC Div
-
CPC1017NTR
Littelfuse Inc.
-
CPC1017N
Littelfuse Inc.
-
CPC1006N
Littelfuse Inc.
-
VO1400AEFTR
Vishay Semiconductor Opto Division
-
CPC1006NTR
Littelfuse Inc.
-
TLP175A(TPL,E
Toshiba Semiconductor and Storage
-
CPC1002NTR
Littelfuse Inc.
-
AQY280S
Panasonic Electric Works
-
CPC1117NTR
Littelfuse Inc.
-
CPC1106NTR
Littelfuse Inc.
Tech Hub
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
